diff options
| author | Ingo Molnar <mingo@kernel.org> | 2014-04-14 16:44:42 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2014-04-14 16:44:42 +0200 |
| commit | 740c699a8d316c8bf8593f19e2ca47795e690622 (patch) | |
| tree | a78886955770a477945c5d84e06b2e7678733b54 /arch/x86/kernel | |
| parent | e69af4657e7764d03ad555f0b583d9c4217bcefa (diff) | |
| parent | c9eaa447e77efe77b7fa4c953bd62de8297fd6c5 (diff) | |
Merge tag 'v3.15-rc1' into perf/urgent
Pick up the latest fixes.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel')
35 files changed, 430 insertions, 2072 deletions
diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index cb648c84b327..f4d96000d33a 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -26,7 +26,7 @@ obj-$(CONFIG_IRQ_WORK) += irq_work.o obj-y += probe_roms.o obj-$(CONFIG_X86_32) += i386_ksyms_32.o obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o -obj-y += syscall_$(BITS).o +obj-y += syscall_$(BITS).o vsyscall_gtod.o obj-$(CONFIG_X86_64) += vsyscall_64.o obj-$(CONFIG_X86_64) += vsyscall_emu_64.o obj-$(CONFIG_SYSFS) += ksysfs.o diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c index 9f46f2b1cfc2..86281ffb96d6 100644 --- a/arch/x86/kernel/acpi/boot.c +++ b/arch/x86/kernel/acpi/boot.c @@ -53,10 +53,6 @@ EXPORT_SYMBOL(acpi_disabled); # include <asm/proto.h> #endif /* X86 */ -#define BAD_MADT_ENTRY(entry, end) ( \ - (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ - ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) - #define PREFIX "ACPI: " int acpi_noirq; /* skip ACPI IRQ initialization */ @@ -907,10 +903,6 @@ static int __init acpi_parse_madt_lapic_entries(void) #ifdef CONFIG_X86_IO_APIC #define MP_ISA_BUS 0 -#ifdef CONFIG_X86_ES7000 -extern int es7000_plat; -#endif - void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) { int ioapic; @@ -960,14 +952,6 @@ void __init mp_config_acpi_legacy_irqs(void) set_bit(MP_ISA_BUS, mp_bus_not_pci); pr_debug("Bus #%d is ISA\n", MP_ISA_BUS); -#ifdef CONFIG_X86_ES7000 - /* - * Older generations of ES7000 have no legacy identity mappings - */ - if (es7000_plat == 1) - return; -#endif - /* * Use the default configuration for the IRQs 0-15. Unless * overridden by (MADT) interrupt source override entries. diff --git a/arch/x86/kernel/acpi/cstate.c b/arch/x86/kernel/acpi/cstate.c index e69182fd01cf..4b28159e0421 100644 --- a/arch/x86/kernel/acpi/cstate.c +++ b/arch/x86/kernel/acpi/cstate.c @@ -87,7 +87,9 @@ static long acpi_processor_ffh_cstate_probe_cpu(void *_cx) num_cstate_subtype = edx_part & MWAIT_SUBSTATE_MASK; retval = 0; - if (num_cstate_subtype < (cx->address & MWAIT_SUBSTATE_MASK)) { + /* If the HW does not support any sub-states in this C-state */ + if (num_cstate_subtype == 0) { + pr_warn(FW_BUG "ACPI MWAIT C-state 0x%x not supported by HW (0x%x)\n", cx->address, edx_part); retval = -1; goto out; } diff --git a/arch/x86/kernel/amd_nb.c b/arch/x86/kernel/amd_nb.c index dec8de4e1663..f04dbb3069b8 100644 --- a/arch/x86/kernel/amd_nb.c +++ b/arch/x86/kernel/amd_nb.c @@ -22,6 +22,7 @@ const struct pci_device_id amd_nb_misc_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_M10H_F3) }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_M30H_NB_F3) }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_NB_F3) }, + { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_M30H_NB_F3) }, {} }; EXPORT_SYMBOL(amd_nb_misc_ids); @@ -30,6 +31,7 @@ static const struct pci_device_id amd_nb_link_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_NB_F4) }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_15H_M30H_NB_F4) }, { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_NB_F4) }, + { PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_16H_M30H_NB_F4) }, {} }; diff --git a/arch/x86/kernel/apic/Makefile b/arch/x86/kernel/apic/Makefile index 0ae0323b1f9c..dcb5b15401ce 100644 --- a/arch/x86/kernel/apic/Makefile +++ b/arch/x86/kernel/apic/Makefile @@ -18,10 +18,7 @@ obj-y += apic_flat_64.o endif # APIC probe will depend on the listing order here -obj-$(CONFIG_X86_NUMAQ) += numaq_32.o -obj-$(CONFIG_X86_SUMMIT) += summit_32.o obj-$(CONFIG_X86_BIGSMP) += bigsmp_32.o -obj-$(CONFIG_X86_ES7000) += es7000_32.o # For 32bit, probe_32 need to be listed last obj-$(CONFIG_X86_LOCAL_APIC) += probe_$(BITS).o diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 53e20531470e..ad28db7e6bde 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -1996,7 +1996,8 @@ static inline void __smp_error_interrupt(struct pt_regs *regs) }; /* First tickle the hardware, only then report what went on. -- REW */ - apic_write(APIC_ESR, 0); + if (lapic_get_maxlvt() > 3) /* Due to the Pentium erratum 3AP. */ + apic_write(APIC_ESR, 0); v = apic_read(APIC_ESR); ack_APIC_irq(); atomic_inc(&irq_err_count); @@ -2136,7 +2137,6 @@ int generic_processor_info(int apicid, int version) * * - arch/x86/kernel/mpparse.c: MP_processor_info() * - arch/x86/mm/amdtopology.c: amd_numa_init() - * - arch/x86/platform/visws/visws_quirks.c: MP_processor_info() * * This function is executed with the modified * boot_cpu_physical_apicid. So, disabled_cpu_apicid kernel diff --git a/arch/x86/kernel/apic/es7000_32.c b/arch/x86/kernel/apic/es7000_32.c deleted file mode 100644 index 6f8f8b348a39..000000000000 --- a/arch/x86/kernel/apic/es7000_32.c +++ /dev/null @@ -1,738 +0,0 @@ -/* - * Written by: Garry Forsgren, Unisys Corporation - * Natalie Protasevich, Unisys Corporation - * - * This file contains the code to configure and interface - * with Unisys ES7000 series hardware system manager. - * - * Copyright (c) 2003 Unisys Corporation. - * Copyright (C) 2009, Red Hat, Inc., Ingo Molnar - * - * All Rights Reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms of version 2 of the GNU General Public License as - * published by the Free Software Foundation. - * - * This program is distributed in the hope that it would be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write the Free Software Foundation, Inc., 59 - * Temple Place - Suite 330, Boston MA 02111-1307, USA. - * - * Contact information: Unisys Corporation, Township Line & Union Meeting - * Roads-A, Unisys Way, Blue Bell, Pennsylvania, 19424, or: - * - * http://www.unisys.com - */ - -#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt - -#include <linux/notifier.h> -#include <linux/spinlock.h> -#include <linux/cpumask.h> -#include <linux/threads.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/reboot.h> -#include <linux/string.h> -#include <linux/types.h> -#include <linux/errno.h> -#include <linux/acpi.h> -#include <linux/init.h> -#include <linux/gfp.h> -#include <linux/nmi.h> -#include <linux/smp.h> -#include <linux/io.h> - -#include <asm/apicdef.h> -#include <linux/atomic.h> -#include <asm/fixmap.h> -#include <asm/mpspec.h> -#include <asm/setup.h> -#include <asm/apic.h> -#include <asm/ipi.h> - -/* - * ES7000 chipsets - */ - -#define NON_UNISYS 0 -#define ES7000_CLASSIC 1 -#define ES7000_ZORRO 2 - -#define MIP_REG 1 -#define MIP_PSAI_REG 4 - -#define MIP_BUSY 1 -#define MIP_SPIN 0xf0000 -#define MIP_VALID 0x0100000000000000ULL -#define MIP_SW_APIC 0x1020b - -#define MIP_PORT(val) ((val >> 32) & 0xffff) - -#define MIP_RD_LO(val) (val & 0xffffffff) - -struct mip_reg { - unsigned long long off_0x00; - unsigned long long off_0x08; - unsigned long long off_0x10; - unsigned long long off_0x18; - unsigned long long off_0x20; - unsigned long long off_0x28; - unsigned long long off_0x30; - unsigned long long off_0x38; -}; - -struct mip_reg_info { - unsigned long long mip_info; - unsigned long long delivery_info; - unsigned long long host_reg; - unsigned long long mip_reg; -}; - -struct psai { - unsigned long long entry_type; - unsigned long long addr; - unsigned long long bep_addr; -}; - -#ifdef CONFIG_ACPI - -struct es7000_oem_table { - struct acpi_table_header Header; - u32 OEMTableAddr; - u32 OEMTableSize; -}; - -static unsigned long oem_addrX; -static unsigned long oem_size; - -#endif - -/* - * ES7000 Globals - */ - -static volatile unsigned long *psai; -static struct mip_reg *mip_reg; -static struct mip_reg *host_reg; -static int mip_port; -static unsigned long mip_addr; -static unsigned long host_addr; - -int es7000_plat; - -/* - * GSI override for ES7000 platforms. - */ - - -static int wakeup_secondary_cpu_via_mip(int cpu, unsigned long eip) -{ - unsigned long vect = 0, psaival = 0; - - if (psai == NULL) - return -1; - - vect = ((unsigned long)__pa(eip)/0x1000) << 16; - psaival = (0x1000000 | vect | cpu); - - while (*psai & 0x1000000) - ; - - *psai = psaival; - - return 0; -} - -static int es7000_apic_is_cluster(void) -{ - /* MPENTIUMIII */ - if (boot_cpu_data.x86 == 6 && - (boot_cpu_data.x86_model >= 7 && boot_cpu_data.x86_model <= 11)) - return 1; - - return 0; -} - -static void setup_unisys(void) -{ - /* - * Determine the generation of the ES7000 currently running. - * - * es7000_plat = 1 if the machine is a 5xx ES7000 box - * es7000_plat = 2 if the machine is a x86_64 ES7000 box - * - */ - if (!(boot_cpu_data.x86 <= 15 && boot_cpu_data.x86_model <= 2)) - es7000_plat = ES7000_ZORRO; - else - es7000_plat = ES7000_CLASSIC; -} - -/* - * Parse the OEM Table: - */ -static int parse_unisys_oem(char *oemptr) -{ - int i; - int success = 0; - unsigned char type, size; - unsigned long val; - char *tp = NULL; - struct psai *psaip = NULL; - struct mip_reg_info *mi; - struct mip_reg *host, *mip; - - tp = oemptr; - - tp += 8; - - for (i = 0; i <= 6; i++) { - type = *tp++; - size = *tp++; - tp -= 2; - switch (type) { - case MIP_REG: - mi = (struct mip_reg_info *)tp; - val = MIP_RD_LO(mi->host_reg); - host_addr = val; - host = (struct mip_reg *)val; - host_reg = __va(host); - val = MIP_RD_LO(mi->mip_reg); - mip_port = MIP_PORT(mi->mip_info); - mip_addr = val; - mip = (struct mip_reg *)val; - mip_reg = __va(mip); - pr_debug("host_reg = 0x%lx\n", - (unsigned long)host_reg); - pr_debug("mip_reg = 0x%lx\n", - (unsigned long)mip_reg); - success++; - break; - case MIP_PSAI_REG: - psaip = (struct psai *)tp; - if (tp != NULL) { - if (psaip->addr) - psai = __va(psaip->addr); - else - psai = NULL; - success++; - } - break; - default: - break; - } - tp += size; - } - - if (success < 2) - es7000_plat = NON_UNISYS; - else - setup_unisys(); - - return es7000_plat; -} - -#ifdef CONFIG_ACPI -static int __init find_unisys_acpi_oem_table(unsigned long *oem_addr) -{ - struct acpi_table_header *header = NULL; - struct es7000_oem_table *table; - acpi_size tbl_size; - acpi_status ret; - int i = 0; - - for (;;) { - ret = acpi_get_table_with_size("OEM1", i++, &header, &tbl_size); - if (!ACPI_SUCCESS(ret)) - return -1; - - if (!memcmp((char *) &header->oem_id, "UNISYS", 6)) - break; - - early_acpi_os_unmap_memory(header, tbl_size); - } - - table = (void *)header; - - oem_addrX = table->OEMTableAddr; - oem_size = table->OEMTableSize; - - early_acpi_os_unmap_memory(header, tbl_size); - - *oem_addr = (unsigned long)__acpi_map_table(oem_addrX, oem_size); - - return 0; -} - -static void __init unmap_unisys_acpi_oem_table(unsigned long oem_addr) -{ - if (!oem_addr) - return; - - __acpi_unmap_table((char *)oem_addr, oem_size); -} - -static int es7000_check_dsdt(void) -{ - struct acpi_table_header header; - - if (ACPI_SUCCESS(acpi_get_table_header(ACPI_SIG_DSDT, 0, &header)) && - !strncmp(header.oem_id, "UNISYS", 6)) - return 1; - return 0; -} - -static int es7000_acpi_ret; - -/* Hook from generic ACPI tables.c */ -static int __init es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id) -{ - unsigned long oem_addr = 0; - int check_dsdt; - int ret = 0; - - /* check dsdt at first to avoid clear fix_map for oem_addr */ - check_dsdt = es7000_check_dsdt(); - - if (!find_unisys_acpi_oem_table(&oem_addr)) { - if (check_dsdt) { - ret = parse_unisys_oem((char *)oem_addr); - } else { - setup_unisys(); - ret = 1; - } - /* - * we need to unmap it - */ - unmap_unisys_acpi_oem_table(oem_addr); - } - - es7000_acpi_ret = ret; - - return ret && !es7000_apic_is_cluster(); -} - -static int es7000_acpi_madt_oem_check_cluster(char *oem_id, char *oem_table_id) -{ - int ret = es7000_acpi_ret; - - return ret && es7000_apic_is_cluster(); -} - -#else /* !CONFIG_ACPI: */ -static int es7000_acpi_madt_oem_check(char *oem_id, char *oem_table_id) -{ - return 0; -} - -static int es7000_acpi_madt_oem_check_cluster(char *oem_id, char *oem_table_id) -{ - return 0; -} -#endif /* !CONFIG_ACPI */ - -static void es7000_spin(int n) -{ - int i = 0; - - while (i++ < n) - rep_nop(); -} - -static int es7000_mip_write(struct mip_reg *mip_reg) -{ - int status = 0; - int spin; - - spin = MIP_SPIN; - while ((host_reg->off_0x38 & MIP_VALID) != 0) { - if (--spin <= 0) { - WARN(1, "Timeout waiting for Host Valid Flag\n"); - return -1; - } - es7000_spin(MIP_SPIN); - } - - memcpy(host_reg, mip_reg, sizeof(struct mip_reg)); - outb(1, mip_port); - - spin = MIP_SPIN; - - while ((mip_reg->off_0x38 & MIP_VALID) == 0) { - if (--spin <= 0) { - WARN(1, "Timeout waiting for MIP Valid Flag\n"); - return -1; - } - es7000_spin(MIP_SPIN); - } - - status = (mip_reg->off_0x00 & 0xffff0000000000ULL) >> 48; - mip_reg->off_0x38 &= ~MIP_VALID; - - return status; -} - -static void es7000_enable_apic_mode(void) -{ - struct mip_reg es7000_mip_reg; - int mip_status; - - if (!es7000_plat) - return; - - pr_info("Enabling APIC mode.\n"); - memset(&es7000_mip_reg, 0, sizeof(struct mip_reg)); - es7000_mip_reg.off_0x00 = MIP_SW_APIC; - es7000_mip_reg.off_0x38 = MIP_VALID; - - while ((mip_status = es7000_mip_write(&es7000_mip_reg)) != 0) - WARN(1, "Command failed, status = %x\n", mip_status); -} - -static unsigned int es7000_get_apic_id(unsigned long x) -{ - return (x >> 24) & 0xFF; -} - -static void es7000_send_IPI_mask(const struct cpumask *mask, int vector) -{ - default_send_IPI_mask_sequence_phys(mask, vector); -} - -static void es7000_send_IPI_allbutself(int vector) -{ - default_send_IPI_mask_allbutself_phys(cpu_online_mask, vector); -} - -static void es7000_send_IPI_all(int vector) -{ - es7000_send_IPI_mask(cpu_online_mask, vector); -} - -static int es7000_apic_id_registered(void) -{ - return 1; -} - -static const struct cpumask *target_cpus_cluster(void) -{ - return cpu_all_mask; -} - -static const struct cpumask *es7000_target_cpus(void) -{ - return cpumask_of(smp_processor_id()); -} - -static unsigned long es7000_check_apicid_used(physid_mask_t *map, int apicid) -{ - return 0; -} - -static unsigned long es7000_check_apicid_present(int bit) -{ - return physid_isset(bit, phys_cpu_present_map); -} - -static int es7000_early_logical_apicid(int cpu) -{ - /* on es7000, logical apicid is the same as physical */ - return early_per_cpu(x86_bios_cpu_apicid, cpu); -} - -static unsigned long calculate_ldr(int cpu) -{ - unsigned long id = per_cpu(x86_bios_cpu_apicid, cpu); - - return SET_APIC_LOGICAL_ID(id); -} - -/* - * Set up the logical destination ID. - * - * Intel recommends to set DFR, LdR and TPR before enabling - * an APIC. See e.g. "AP-388 82489DX User's Manual" (Intel - * document number 292116). So here it goes... - */ -static void es7000_init_apic_ldr_cluster(void) -{ - unsigned long val; - int cpu = smp_processor_id(); - - apic_write(APIC_DFR, APIC_DFR_CLUSTER); - val = calculate_ldr(cpu); - apic_write(APIC_LDR, val); -} - -static void es7000_init_apic_ldr(void) -{ - unsigned long val; - int cpu = smp_processor_id(); - - apic_write(APIC_DFR, APIC_DFR_FLAT); - val = calculate_ldr(cpu); - apic_write(APIC_LDR, val); -} - -static void es7000_setup_apic_routing(void) -{ - int apic = per_cpu(x86_bios_cpu_apicid, smp_processor_id()); - - pr_info("Enabling APIC mode: %s. Using %d I/O APICs, target cpus %lx\n", - (apic_version[apic] == 0x14) ? - "Physical Cluster" : "Logical Cluster", - nr_ioapics, cpumask_bits(es7000_target_cpus())[0]); -} - -static int es7000_cpu_present_to_apicid(int mps_cpu) -{ - if (!mps_cpu) - return boot_cpu_physical_apicid; - else if (mps_cpu < nr_cpu_ids) - return per_cpu(x86_bios_cpu_apicid, mps_cpu); - else - return BAD_APICID; -} - -static int cpu_id; - -static void es7000_apicid_to_cpu_present(int phys_apicid, physid_mask_t *retmap) -{ - physid_set_mask_of_physid(cpu_id, retmap); - ++cpu_id; -} - -static void es7000_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap) -{ - /* For clustered we don't have a good way to do this yet - hack */ - physids_promote(0xFFL, retmap); -} - -static int es7000_check_phys_apicid_present(int cpu_physical_apicid) -{ - boot_cpu_physical_apicid = read_apic_id(); - return 1; -} - -static inline int -es7000_cpu_mask_to_apicid(const struct cpumask *cpumask, unsigned int *dest_id) -{ - unsigned int round = 0; - unsigned int cpu, uninitialized_var(apicid); - - /* - * The cpus in the mask must all be on the apic cluster. - */ - for_each_cpu_and(cpu, cpumask, cpu_online_mask) { - int new_apicid = early_per_cpu(x86_cpu_to_logical_apicid, cpu); - - if (round && APIC_CLUSTER(apicid) != APIC_CLUSTER(new_apicid)) { - WARN(1, "Not a valid mask!"); - - return -EINVAL; - } - apicid |= new_apicid; - round++; - } - if (!round) - return -EINVAL; - *dest_id = apicid; - return 0; -} - -static int -es7000_cpu_mask_to_apicid_and(const struct cpumask *inmask, - const struct cpumask *andmask, - unsigned int *apicid) -{ - cpumask_var_t cpumask; - *apicid = early_per_cpu(x86_cpu_to_logical_apicid, 0); - - if (!alloc_cpumask_var(&cpumask, GFP_ATOMIC)) - return 0; - - cpumask_and(cpumask, inmask, andmask); - es7000_cpu_mask_to_apicid(cpumask, apicid); - - free_cpumask_var(cpumask); - - return 0; -} - -static int es7000_phys_pkg_id(int cpuid_apic, int index_msb) -{ - return cpuid_apic >> index_msb; -} - -static int probe_es7000(void) -{ - /* probed later in mptable/ACPI hooks */ - return 0; -} - -static int es7000_mps_ret; -static int es7000_mps_oem_check(struct mpc_table *mpc, char *oem, - char *productid) -{ - int ret = 0; - - if (mpc->oemptr) { - struct mpc_oemtable *oem_table = - (struct mpc_oemtable *)mpc->oemptr; - - if (!strncmp(oem, "UNISYS", 6)) - ret = parse_unisys_oem((char *)oem_table); - } - - es7000_mps_ret = ret; - - return ret && !es7000_apic_is_cluster(); -} - -static int es7000_mps_oem_check_cluster(struct mpc_table *mpc, char *oem, - char *productid) -{ - int ret = es7000_mps_ret; - - return ret && es7000_apic_is_cluster(); -} - -/* We've been warned by a false positive warning.Use __refdata to keep calm. */ -static struct apic __refdata apic_es7000_cluster = { - - .name = "es7000", - .probe = probe_es7000, - .acpi_madt_oem_check = es7000_acpi_madt_oem_check_cluster, - .apic_id_valid = default_apic_id_valid, - .apic_id_registered = es7000_apic_id_registered, - - .irq_delivery_mode = dest_LowestPrio, - /* logical delivery broadcast to all procs: */ - .irq_dest_mode = 1, - - .target_cpus = target_cpus_cluster, - .disable_esr = 1, - .dest_logical = 0, - .check_apicid_used = es7000_check_apicid_used, - .check_apicid_present = es7000_check_apicid_present, - - .vector_allocation_domain = flat_vector_allocation_domain, - .init_apic_ldr = es7000_init_apic_ldr_cluster, - - .ioapic_phys_id_map = es7000_ioapic_phys_id_map, - .setup_apic_routing = es7000_setup_apic_routing, - .multi_timer_check = NULL, - .cpu_present_to_apicid = es7000_cpu_present_to_apicid, - .apicid_to_cpu_present = es7000_apicid_to_cpu_present, - .setup_portio_remap = NULL, - .check_phys_apicid_present = es7000_check_phys_apicid_present, - .enable_apic_mode = es7000_enable_apic_mode, - .phys_pkg_id = es7000_phys_pkg_id, - .mps_oem_check = es7000_mps_oem_check_cluster, - - .get_apic_id = es7000_get_apic_id, - .set_apic_id = NULL, - .apic_id_mask = 0xFF << 24, - - .cpu_mask_to_apicid_and = es7000_cpu_mask_to_apicid_and, - - .send_IPI_mask = es7000_send_IPI_mask, - .send_IPI_mask_allbutself = NULL, - .send_IPI_allbutself = es7000_send_IPI_allbutself, - .send_IPI_all = es7000_send_IPI_all, - .send_IPI_self = default_send_IPI_self, - - .wakeup_secondary_cpu = wakeup_secondary_cpu_via_mip, - - .trampoline_phys_low = 0x467, - .trampoline_phys_high = 0x469, - - .wait_for_init_deassert = false, - /* Nothing to do for most platforms, since cleared by the INIT cycle: */ - .smp_callin_clear_local_apic = NULL, - .inquire_remote_apic = default_inquire_remote_apic, - - .read = native_apic_mem_read, - .write = native_apic_mem_write, - .eoi_write = native_apic_mem_write, - .icr_read = native_apic_icr_read, - .icr_write = native_apic_icr_write, - .wait_icr_idle = native_apic_wait_icr_idle, - .safe_wait_icr_idle = native_safe_apic_wait_icr_idle, - - .x86_32_early_logical_apicid = es7000_early_logical_apicid, -}; - -static struct apic __refdata apic_es7000 = { - - .name = "es7000", - .probe = probe_es7000, - .acpi_madt_oem_check = es7000_acpi_madt_oem_check, - .apic_id_valid = default_apic_id_valid, - .apic_id_registered = es7000_apic_id_registered, - - .irq_delivery_mode = dest_Fixed, - /* phys delivery to target CPUs: */ - .irq_dest_mode = 0, - - .target_cpus = es7000_target_cpus, - .disable_esr = 1, - .dest_logical = 0, - .check_apicid_used = es7000_check_apicid_used, - .check_apicid_present = es7000_check_apicid_present, - - .vector_allocation_domain = flat_vector_allocation_domain, - .init_apic_ldr = es7000_init_apic_ldr, - - .ioapic_phys_id_map = es7000_ioapic_phys_id_map, - .setup_apic_routing = es7000_setup_apic_routing, - .multi_timer_check = NULL, - .cpu_present_to_apicid = es7000_cpu_present_to_apicid, - .apicid_to_cpu_present = es7000_apicid_to_cpu_present, - .setup_portio_remap = NULL, - .check_phys_apicid_present = es7000_check_phys_apicid_present, - .enable_apic_mode = es7000_enable_apic_mode, - .phys_pkg_id = es7000_phys_pkg_id, - .mps_oem_check = es7000_mps_oem_check, - - .get_apic_id = es7000_get_apic_id, - .set_apic_id = NULL, - .apic_id_mask = 0xFF << 24, - - .cpu_mask_to_apicid_and = es7000_cpu_mask_to_apicid_and, - - .send_IPI_mask = es7000_send_IPI_mask, - .send_IPI_mask_allbutself = NULL, - .send_IPI_allbutself = es7000_send_IPI_allbutself, - .send_IPI_all = es7000_send_IPI_all, - .send_IPI_self = default_send_IPI_self, - - .trampoline_phys_low = 0x467, - .trampoline_phys_high = 0x469, - - .wait_for_init_deassert = true, - /* Nothing to do for most platforms, since cleared by the INIT cycle: */ - .smp_callin_clear_local_apic = NULL, - .inquire_remote_apic = default_inquire_remote_apic, - - .read = native_apic_mem_read, - .write = native_apic_mem_write, - .eoi_write = native_apic_mem_write, - .icr_read = native_apic_icr_read, - .icr_write = native_apic_icr_write, - .wait_icr_idle = native_apic_wait_icr_idle, - .safe_wait_icr_idle = native_safe_apic_wait_icr_idle, - - .x86_32_early_logical_apicid = es7000_early_logical_apicid, -}; - -/* - * Need to check for es7000 followed by es7000_cluster, so this order - * in apic_drivers is important. - */ -apic_drivers(apic_es7000, apic_es7000_cluster); diff --git a/arch/x86/kernel/apic/numaq_32.c b/arch/x86/kernel/apic/numaq_32.c deleted file mode 100644 index 030ea1c04f72..000000000000 --- a/arch/x86/kernel/apic/numaq_32.c +++ /dev/null @@ -1,524 +0,0 @@ -/* - * Written by: Patricia Gaughen, IBM Corporation - * - * Copyright (C) 2002, IBM Corp. - * Copyright (C) 2009, Red Hat, Inc., Ingo Molnar - * - * All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Send feedback to <gone@us.ibm.com> - */ -#include <linux/nodemask.h> -#include <linux/topology.h> -#include <linux/bootmem.h> -#include <linux/memblock.h> -#include <linux/threads.h> -#include <linux/cpumask.h> -#include <linux/kernel.h> -#include <linux/mmzone.h> -#include <linux/module.h> -#include <linux/string.h> -#include <linux/init.h> -#include <linux/numa.h> -#include <linux/smp.h> -#include <linux/io.h> -#include <linux/mm.h> - -#include <asm/processor.h> -#include <asm/fixmap.h> -#include <asm/mpspec.h> -#include <asm/numaq.h> -#include <asm/setup.h> -#include <asm/apic.h> -#include <asm/e820.h> -#include <asm/ipi.h> - -int found_numaq; - -/* - * Have to match translation table entries to main table entries by counter - * hence the mpc_record variable .... can't see a less disgusting way of - * doing this .... - */ -struct mpc_trans { - unsigned char mpc_type; - unsigned char trans_len; - unsigned char trans_type; - unsigned char trans_quad; - unsigned char trans_global; - unsigned char trans_local; - unsigned short trans_reserved; -}; - -static int mpc_record; - -static struct mpc_trans *translation_table[MAX_MPC_ENTRY]; - -int mp_bus_id_to_node[MAX_MP_BUSSES]; -int mp_bus_id_to_local[MAX_MP_BUSSES]; -int quad_local_to_mp_bus_id[NR_CPUS/4][4]; - - -static inline void numaq_register_node(int node, struct sys_cfg_data *scd) -{ - struct eachquadmem *eq = scd->eq + node; - u64 start = (u64)(eq->hi_shrd_mem_start - eq->priv_mem_size) << 20; - u64 end = (u64)(eq->hi_shrd_mem_start + eq->hi_shrd_mem_size) << 20; - int ret; - - node_set(node, numa_nodes_parsed); - ret = numa_add_memblk(node, start, end); - BUG_ON(ret < 0); -} - -/* - * Function: smp_dump_qct() - * - * Description: gets memory layout from the quad config table. This - * function also updates numa_nodes_parsed with the nodes (quads) present. - */ -static void __init smp_dump_qct(void) -{ - struct sys_cfg_data *scd; - int node; - - scd = (void *)__va(SYS_CFG_DATA_PRIV_ADDR); - - for_each_node(node) { - if (scd->quads_present31_0 & (1 << node)) - numaq_register_node(node, scd); - } -} - -void numaq_tsc_disable(void) -{ - if (!found_numaq) - return; - - if (num_online_nodes() > 1) { - printk(KERN_DEBUG "NUMAQ: disabling TSC\n"); - setup_clear_cpu_cap(X86_FEATURE_TSC); - } -} - -static void __init numaq_tsc_init(void) -{ - numaq_tsc_disable(); -} - -static inline int generate_logical_apicid(int quad, int phys_apicid) -{ - return (quad << 4) + (phys_apicid ? phys_apicid << 1 : 1); -} - -/* x86_quirks member */ -static int mpc_apic_id(struct mpc_cpu *m) -{ - int quad = translation_table[mpc_record]->trans_quad; - int logical_apicid = generate_logical_apicid(quad, m->apicid); - - printk(KERN_DEBUG - "Processor #%d %u:%u APIC version %d (quad %d, apic %d)\n", - m->apicid, (m->cpufeature & CPU_FAMILY_MASK) >> 8, - (m->cpufeature & CPU_MODEL_MASK) >> 4, - m->apicver, quad, logical_apicid); - - return logical_apicid; -} - -/* x86_quirks member */ -static void mpc_oem_bus_info(struct mpc_bus *m, char *name) -{ - int quad = translation_table[mpc_record]->trans_quad; - int local = translation_table[mpc_record]->trans_local; - - mp_bus_id_to_node[m->busid] = quad; - mp_bus_id_to_local[m->busid] = local; - - printk(KERN_INFO "Bus #%d is %s (node %d)\n", m->busid, name, quad); -} - -/* x86_quirks member */ -static void mpc_oem_pci_bus(struct mpc_bus *m) -{ - int quad = translation_table[mpc_record]->trans_quad; - int local = translation_table[mpc_record]->trans_local; - - quad_local_to_mp_bus_id[quad][local] = m->busid; -} - -/* - * Called from mpparse code. - * mode = 0: prescan - * mode = 1: one mpc entry scanned - */ -static void numaq_mpc_record(unsigned int mode) -{ - if (!mode) - mpc_record = 0; - else - mpc_record++; -} - -static void __init MP_translation_info(struct mpc_trans *m) -{ - printk(KERN_INFO - "Translation: record %d, type %d, quad %d, global %d, local %d\n", - mpc_record, m->trans_type, m->trans_quad, m->trans_global, - m->trans_local); - - if (mpc_record >= MAX_MPC_ENTRY) - printk(KERN_ERR "MAX_MPC_ENTRY exceeded!\n"); - else - translation_table[mpc_record] = m; /* stash this for later */ - - if (m->trans_quad < MAX_NUMNODES && !node_online(m->trans_quad)) - node_set_online(m->trans_quad); -} - -static int __init mpf_checksum(unsigned char *mp, int len) -{ - int sum = 0; - - while (len--) - sum += *mp++; - - return sum & 0xFF; -} - -/* - * Read/parse the MPC oem tables - */ -static void __init smp_read_mpc_oem(struct mpc_table *mpc) -{ - struct mpc_oemtable *oemtable = (void *)(long)mpc->oemptr; - int count = sizeof(*oemtable); /* the header size */ - unsigned char *oemptr = ((unsigned char *)oemtable) + count; - - mpc_record = 0; - printk(KERN_INFO - "Found an OEM MPC table at %8p - parsing it...\n", oemtable); - - if (memcmp(oemtable->signature, MPC_OEM_SIGNATURE, 4)) { - printk(KERN_WARNING - "SMP mpc oemtable: bad signature [%c%c%c%c]!\n", - oemtable->signature[0], oemtable->signature[1], - oemtable->signature[2], oemtable->signature[3]); - return; - } - - if (mpf_checksum((unsigned char *)oemtable, oemtable->length)) { - printk(KERN_WARNING "SMP oem mptable: checksum error!\n"); - return; - } - - while (count < oemtable->length) { - switch (*oemptr) { - case MP_TRANSLATION: - { - struct mpc_trans *m = (void *)oemptr; - - MP_translation_info(m); - oemptr += sizeof(*m); - count += sizeof(*m); - ++mpc_record; - break; - } - default: - printk(KERN_WARNING - "Unrecognised OEM table entry type! - %d\n", - (int)*oemptr); - return; - } - } -} - -static __init void early_check_numaq(void) -{ - /* - * get boot-time SMP configuration: - */ - if (smp_found_config) - early_get_smp_config(); - - if (found_numaq) { - x86_init.mpparse.mpc_record = numaq_mpc_record; - x86_init.mpparse.setup_ioapic_ids = x86_init_noop; - x86_init.mpparse.mpc_apic_id = mpc_apic_id; - x86_init.mpparse.smp_read_mpc_oem = smp_read_mpc_oem; - x86_init.mpparse.mpc_oem_pci_bus = mpc_oem_pci_bus; - x86_init.mpparse.mpc_oem_bus_info = mpc_oem_bus_info; - x86_init.timers.tsc_pre_init = numaq_tsc_init; - x86_init.pci.init = pci_numaq_init; - } -} - -int __init numaq_numa_init(void) -{ - early_check_numaq(); - if (!found_numaq) - return -ENOENT; - smp_dump_qct(); - - return 0; -} - -#define NUMAQ_APIC_DFR_VALUE (APIC_DFR_CLUSTER) - -static inline unsigned int numaq_get_apic_id(unsigned long x) -{ - return (x >> 24) & 0x0F; -} - -static inline void numaq_send_IPI_mask(const struct cpumask *mask, int vector) -{ - default_send_IPI_mask_sequence_logical(mask, vector); -} - -static inline void numaq_send_IPI_allbutself(int vector) -{ - default_send_IPI_mask_allbutself_logical(cpu_online_mask, vector); -} - -static inline void numaq_send_IPI_all(int vector) -{ - numaq_send_IPI_mask(cpu_online_mask, vector); -} - -#define NUMAQ_TRAMPOLINE_PHYS_LOW (0x8) -#define NUMAQ_TRAMPOLINE_PHYS_HIGH (0xa) - -/* - * Because we use NMIs rather than the INIT-STARTUP sequence to - * bootstrap the CPUs, the APIC may be in a weird state. Kick it: - */ -static inline void numaq_smp_callin_clear_local_apic(void) -{ - clear_local_APIC(); -} - -static inline const struct cpumask *numaq_target_cpus(void) -{ - return cpu_all_mask; -} - -static unsigned long numaq_check_apicid_used(physid_mask_t *map, int apicid) -{ - return physid_isset(apicid, *map); -} - -static inline unsigned long numaq_check_apicid_present(int bit) -{ - return physid_isset(bit, phys_cpu_present_map); -} - -static inline int numaq_apic_id_registered(void) -{ - return 1; -} - -static inline void numaq_init_apic_ldr(void) -{ - /* Already done in NUMA-Q firmware */ -} - -static inline void numaq_setup_apic_routing(void) -{ - printk(KERN_INFO - "Enabling APIC mode: NUMA-Q. Using %d I/O APICs\n", - nr_ioapics); -} - -/* - * Skip adding the timer int on secondary nodes, which causes - * a small but painful rift in the time-space continuum. - */ -static inline int numaq_multi_timer_check(int apic, int irq) -{ - return apic != 0 && irq == 0; -} - -static inline void numaq_ioapic_phys_id_map(physid_mask_t *phys_map, physid_mask_t *retmap) -{ - /* We don't have a good way to do this yet - hack */ - return physids_promote(0xFUL, retmap); -} - -/* - * Supporting over 60 cpus on NUMA-Q requires a locality-dependent - * cpu to APIC ID relation to properly interact with the intelligent - * mode of the cluster controller. - */ -static inline int numaq_cpu_present_to_apicid(int mps_cpu) -{ - if (mps_cpu < 60) - return ((mps_cpu >> 2) << 4) | (1 << (mps_cpu & 0x3)); - else - return BAD_APICID; -} - -static inline int numaq_apicid_to_node(int logical_apicid) -{ - return logical_apicid >> 4; -} - -static int numaq_numa_cpu_node(int cpu) -{ - int logical_apicid = early_per_cpu(x86_cpu_to_logical_apicid, cpu); - - if (logical_apicid != BAD_APICID) - return numaq_apicid_to_node(logical_apicid); - return NUMA_NO_NODE; -} - -static void numaq_apicid_to_cpu_present(int logical_apicid, physid_mask_t *retmap) -{ - int node = numaq_apicid_to_node(logical_apicid); - int cpu = __ffs(logical_apicid & 0xf); - - physid_set_mask_of_physid(cpu + 4*node, retmap); -} - -/* Where the IO area was mapped on multiquad, always 0 otherwise */ -void *xquad_portio; - -static inline int numaq_check_phys_apicid_present(int phys_apicid) -{ - return 1; -} - -/* - * We use physical apicids here, not logical, so just return the default - * physical broadcast to stop people from breaking us - */ -static int -numaq_cpu_mask_to_apicid_and(const struct cpumask *cpumask, - const struct cpumask *andmask, - unsigned int *apicid) -{ - *apicid = 0x0F; - return 0; -} - -/* No NUMA-Q box has a HT CPU, but it can't hurt to use the default code. */ -static inline int numaq_phys_pkg_id(int cpuid_apic, int index_msb) -{ - return cpuid_apic >> index_msb; -} - -static int -numaq_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid) -{ - if (strncmp(oem, "IBM NUMA", 8)) - printk(KERN_ERR "Warning! Not a NUMA-Q system!\n"); - else - found_numaq = 1; - - return found_numaq; -} - -static int probe_numaq(void) -{ - /* already know from get_memcfg_numaq() */ - return found_numaq; -} - -static void numaq_setup_portio_remap(void) -{ - int num_quads = num_online_nodes(); - - if (num_quads <= 1) - return; - - printk(KERN_INFO - "Remapping cross-quad port I/O for %d quads\n", num_quads); - - xquad_portio = ioremap(XQUAD_PORTIO_BASE, num_quads*XQUAD_PORTIO_QUAD); - - printk(KERN_INFO - "xquad_portio vaddr 0x%08lx, len %08lx\n", - (u_long) xquad_portio, (u_long) num_quads*XQUAD_PORTIO_QUAD); -} - -/* Use __refdata to keep false positive warning calm. */ -static struct apic __refdata apic_numaq = { - - .name = "NUMAQ", - .probe = probe_numaq, - .acpi_madt_oem_check = NULL, - .apic_id_valid = default_apic_id_valid, - .apic_id_registered = numaq_apic_id_registered, - - .irq_delivery_mode = dest_LowestPrio, - /* physical delivery on LOCAL quad: */ - .irq_dest_mode = 0, - - .target_cpus = numaq_target_cpus, - .disable_esr = 1, - .dest_logical = APIC_DEST_LOGICAL, - .check_apicid_used = numaq_check_apicid_used, - .check_apicid_present = numaq_check_apicid_present, - - .vector_allocation_domain = flat_vector_allocation_domain, - .init_apic_ldr = numaq_init_apic_ldr, - - .ioapic_phys_id_map = numaq_ioapic_phys_id_map, - .setup_apic_routing = numaq_setup_apic_routing, - .multi_timer_check = numaq_multi_timer_check, - .cpu_present_to_apicid = numaq_cpu_present_to_apicid, - .apicid_to_cpu_present = numaq_apicid_to_cpu_present, - .setup_portio_remap = numaq_setup_portio_remap, - .check_phys_apicid_present = numaq_check_phys_apicid_present, - .enable_apic_mode = NULL, - .phys_pkg_id = numaq_phys_pkg_id, - .mps_oem_check = numaq_mps_oem_check, - - .get_apic_id = numaq_get_apic_id, - .set_apic_id = NULL, - .apic_id_mask = 0x0F << 24, - - .cpu_mask_to_apicid_and = numaq_cpu_mask_to_apicid_and, - - .send_IPI_mask = numaq_send_IPI_mask, - .send_IPI_mask_allbutself = NULL, - .send_IPI_allbutself = numaq_send_IPI_allbutself, - .send_IPI_all = numaq_send_IPI_all, - .send_IPI_self = default_send_IPI_self, - - .wakeup_secondary_cpu = wakeup_secondary_cpu_via_nmi, - .trampoline_phys_low = NUMAQ_TRAMPOLINE_PHYS_LOW, - .trampoline_phys_high = NUMAQ_TRAMPOLINE_PHYS_HIGH, - - /* We don't do anything here because we use NMI's to boot instead */ - .wait_for_init_deassert = false, - .smp_callin_clear_local_apic = numaq_smp_callin_clear_local_apic, - .inquire_remote_apic = NULL, - - .read = native_apic_mem_read, - .write = native_apic_mem_write, - .eoi_write = native_apic_mem_write, - .icr_read = native_apic_icr_read, - .icr_write = native_apic_icr_write, - .wait_icr_idle = native_apic_wait_icr_idle, - .safe_wait_icr_idle = native_safe_apic_wait_icr_idle, - - .x86_32_early_logical_apicid = noop_x86_32_early_logical_apicid, - .x86_32_numa_cpu_node = numaq_numa_cpu_node, -}; - -apic_driver(apic_numaq); diff --git a/arch/x86/kernel/apic/summit_32.c b/arch/x86/kernel/apic/summit_32.c deleted file mode 100644 index b656128611cd..000000000000 --- a/arch/x86/kernel/apic/summit_32.c +++ /dev/null @@ -1,550 +0,0 @@ -/* - * IBM Summit-Specific Code - * - * Written By: Matthew Dobson, IBM Corporation - * - * Copyright (c) 2003 IBM Corp. - * - * All rights reserved. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or (at - * your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or - * NON INFRINGEMENT. See the GNU General Public License for more - * details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - * Send feedback to <colpatch@us.ibm.com> - * - */ - -#define pr_fmt(fmt) "summit: %s: " fmt, __func__ - -#include <linux/mm.h> -#include <asm/io.h> -#include <asm/bios_ebda.h> - -/* - * APIC driver for the IBM "Summit" chipset. - */ -#include <linux/threads.h> -#include <linux/cpumask.h> -#include <asm/mpspec.h> -#include <asm/apic.h> -#include <asm/smp.h> -#include <asm/fixmap.h> -#include <asm/apicdef.h> -#include <asm/ipi.h> -#include <linux/kernel.h> -#include <linux/string.h> -#include <linux/gfp.h> -#include <linux/smp.h> - -static unsigned summit_get_apic_id(unsigned long x) -{ - return (x >> 24) & 0xFF; -} - -static inline void summit_send_IPI_mask(const struct cpumask *mask, int vector) -{ - default_send_IPI_mask_sequence_logical(mask, vector); -} - -static void summit_send_IPI_allbutself(int vector) -{ - default_send_IPI_mask_allbutself_logical(cpu_online_mask, vector); -} - -static void summit_send_IPI_all(int vector) -{ - summit_send_IPI_mask(cpu_online_mask, vector); -} - -#include <asm/tsc.h> - -extern int use_cyclone; - -#ifdef CONFIG_X86_SUMMIT_NUMA -static void setup_summit(void); -#else -static inline void setup_summit(void) {} -#endif - -static int summit_mps_oem_check(struct mpc_table *mpc, char *oem, - char *productid) -{ - if (!strncmp(oem, "IBM ENSW", 8) && - (!strncmp(productid, "VIGIL SMP", 9) - || !strncmp(productid, "EXA", 3) - || !strncmp(productid, "RUTHLESS SMP", 12))){ - mark_tsc_unstable("Summit based system"); - use_cyclone = 1; /*enable cyclone-timer*/ - setup_summit(); - return 1; - } - return 0; -} - -/* Hook from generic ACPI tables.c */ -static int summit_acpi_madt_oem_check(char *oem_id, char *oem_table_id) -{ - if (!strncmp(oem_id, "IBM", 3) && - (!strncmp(oem_table_id, "SERVIGIL", 8) - || !strncmp(oem_table_id, "EXA", 3))){ - mark_tsc_unstable("Summit based system"); - use_cyclone = 1; /*enable cyclone-timer*/ - setup_summit(); - return 1; - } - return 0; -} - -struct rio_table_hdr { - unsigned char version; /* Version number of this data structure */ - /* Version 3 adds chassis_num & WP_index */ - unsigned char num_scal_dev; /* # of Scalability devices (Twisters for Vigil) */ - unsigned char num_rio_dev; /* # of RIO I/O devices (Cyclones and Winnipegs) */ -} __attribute__((packed)); - -struct scal_detail { - unsigned char node_id; /* Scalability Node ID */ - unsigned long CBAR; /* Address of 1MB register space */ - unsigned char port0node; /* Node ID port connected to: 0xFF=None */ - unsigned char port0port; /* Port num port connected to: 0,1,2, or 0xFF=None */ - unsigned char port1node; /* Node ID port connected to: 0xFF = None */ - unsigned char port1port; /* Port num port connected to: 0,1,2, or 0xFF=None */ - unsigned char port2node; /* Node ID port connected to: 0xFF = None */ - unsigned char port2port; /* Port num port connected to: 0,1,2, or 0xFF=None */ - unsigned char chassis_num; /* 1 based Chassis number (1 = boot node) */ -} __attribute__((packed)); - -struct rio_detail { - unsigned char node_id; /* RIO Node ID */ - unsigned long BBAR; /* Address of 1MB register space */ - unsigned char type; /* Type of device */ - unsigned char owner_id; /* For WPEG: Node ID of Cyclone that owns this WPEG*/ - /* For CYC: Node ID of Twister that owns this CYC */ - unsigned char port0node; /* Node ID port connected to: 0xFF=None */ - unsigned char port0port; /* Port num port connected to: 0,1,2, or 0xFF=None */ - unsigned char port1node; /* Node ID port connected to: 0xFF=None */ - unsigned char port1port; /* Port num port connected to: 0,1,2, or 0xFF=None */ - unsigned char first_slot; /* For WPEG: Lowest slot number below this WPEG */ - /* For CYC: 0 */ - unsigned char status; /* For WPEG: Bit 0 = 1 : the XAPIC is used */ - /* = 0 : the XAPIC is not used, ie:*/ - /* ints fwded to another XAPIC */ - /* Bits1:7 Reserved */ - /* For CYC: Bits0:7 Reserved */ - unsigned char WP_index; /* For WPEG: WPEG instance index - lower ones have */ - /* lower slot numbers/PCI bus numbers */ - /* For CYC: No meaning */ - unsigned char chassis_num; /* 1 based Chassis number */ - /* For LookOut WPEGs this field indicates the */ - /* Expansion Chassis #, enumerated from Boot */ - /* Node WPEG external port, then Boot Node CYC */ - /* external port, then Next Vigil chassis WPEG */ - /* external port, etc. */ - /* Shared Lookouts have only 1 chassis number (the */ - /* first one assigned) */ -} __attribute__((packed)); - - -typedef enum { - CompatTwister = 0, /* Compatibility Twister */ - AltTwister = 1, /* Alternate Twister of internal 8-way */ - CompatCyclone = 2, /* Compatibility Cyclone */ - AltCyclone = 3, /* Alternate Cyclone of internal 8-way */ - CompatWPEG = 4, /* Compatibility WPEG */ - AltWPEG = 5, /* Second Planar WPEG */ - LookOutAWPEG = 6, /* LookOut WPEG */ - LookOutBWPEG = 7, /* LookOut WPEG */ -} node_type; - -static inline int is_WPEG(struct rio_detail *rio){ - return (rio->type == CompatWPEG || rio->type == AltWPEG || - rio->type == LookOutAWPEG || rio->type == LookOutBWPEG); -} - -#define SUMMIT_APIC_DFR_VALUE (APIC_DFR_CLUSTER) - -static const struct cpumask *summit_target_cpus(void) -{ - /* CPU_MASK_ALL (0xff) has undefined behaviour with - * dest_LowestPrio mode logical clustered apic interrupt routing - * Just start on cpu 0. IRQ balancing will spread load - */ - return cpumask_of(0); -} - -static unsigned long summit_check_apicid_used(physid_mask_t *map, int apicid) -{ - return 0; -} - -/* we don't use the phys_cpu_present_map to indicate apicid presence */ -static unsigned long summit_check_apicid_present(int bit) -{ - return 1; -} - -static int summit_early_logical_apicid(int cpu) -{ - int count = 0; - u8 my_id = early_per_cpu(x86_cpu_to_apicid, cpu); - u8 my_cluster = APIC_CLUSTER(my_id); -#ifdef CONFIG_SMP - u8 lid; - int i; - - /* Create logical APIC IDs by counting CPUs already in cluster. */ - for (count = 0, i = nr_cpu_ids; --i >= 0; ) { - lid = early_per_cpu(x86_cpu_to_logical_apicid, i); - if (lid != BAD_APICID && APIC_CLUSTER(lid) == my_cluster) - ++count; - } -#endif - /* We only have a 4 wide bitmap in cluster mode. If a deranged - * BIOS puts 5 CPUs in one APIC cluster, we're hosed. */ - BUG_ON(count >= XAPIC_DEST_CPUS_SHIFT); - return my_cluster | (1UL << count); -} - -static void summit_init_apic_ldr(void) -{ - int cpu = smp_processor_id(); - unsigned long id = early_per_cpu(x86_cpu_to_logical_apicid, cpu); - unsigned long val; - - apic_write(APIC_DFR, SUMMIT_APIC_DFR_VALUE); - val = apic_read(APIC_LDR) & ~APIC_LDR_MASK; - val |= SET_APIC_LOGICAL_ID(id); - apic_write(APIC_LDR, val); -} - -static int summit_apic_id_registered(void) -{ - return 1; -} - -static void summit_setup_apic_routing(void) -{ - pr_info("Enabling APIC mode: Summit. Using %d I/O APICs\n", - nr_ioapics); -} - -static int summit_cpu_present_to_apicid(int mps_cpu) -{ - if (mps_cpu < nr_cpu_ids) - return (int)per_cpu(x86_bios_cpu_apicid, mps_cpu); - else - return BAD_APICID; -} - -static void summit_ioapic_phys_id_map(physid_mask_t *phys_id_map, physid_mask_t *retmap) -{ - /* For clustered we don't have a good way to do this yet - hack */ - physids_promote(0x0FL, retmap); -} - -static void summit_apicid_to_cpu_present(int apicid, physid_mask_t *retmap) -{ - physid_set_mask_of_physid(0, retmap); -} - -static int summit_check_phys_apicid_present(int physical_apicid) -{ - return 1; -} - -static inline int -summit_cpu_mask_to_apicid(const struct cpumask *cpumask, unsigned int *dest_id) -{ - unsigned int round = 0; - unsigned int cpu, apicid = 0; - - /* - * The cpus in the mask must all be on the apic cluster. - */ - for_each_cpu_and(cpu, cpumask, cpu_online_mask) { - int new_apicid = early_per_cpu(x86_cpu_to_logical_apicid, cpu); - - if (round && APIC_CLUSTER(apicid) != APIC_CLUSTER(new_apicid)) { - pr_err("Not a valid mask!\n"); - return -EINVAL; - } - apicid |= new_apicid; - round++; - } - if (!round) - return -EINVAL; - *dest_id = apicid; - return 0; -} - -static int -summit_cpu_mask_to_apicid_and(const struct cpumask *inmask, - const struct cpumask *andmask, - unsigned int *apicid) -{ - cpumask_var_t cpumask; - *apicid = early_per_cpu(x86_cpu_to_logical_apicid, 0); - - if (!alloc_cpumask_var(&cpumask, GFP_ATOMIC)) - return 0; - - cpumask_and(cpumask, inmask, andmask); - summit_cpu_mask_to_apicid(cpumask, apicid); - - free_cpumask_var(cpumask); - - return 0; -} - -/* - * cpuid returns the value latched in the HW at reset, not the APIC ID - * register's value. For any box whose BIOS changes APIC IDs, like - * clustered APIC systems, we must use hard_smp_processor_id. - * - * See Intel's IA-32 SW Dev's Manual Vol2 under CPUID. - */ -static int summit_phys_pkg_id(int cpuid_apic, int index_msb) -{ - return hard_smp_processor_id() >> index_msb; -} - -static int probe_summit(void) -{ - /* probed later in mptable/ACPI hooks */ - return 0; -} - -#ifdef CONFIG_X86_SUMMIT_NUMA -static struct rio_table_hdr *rio_table_hdr; -static struct scal_detail *scal_devs[MAX_NUMNODES]; -static struct rio_detail *rio_devs[MAX_NUMNODES*4]; - -#ifndef CONFIG_X86_NUMAQ -static int mp_bus_id_to_node[MAX_MP_BUSSES]; -#endif - -static int setup_pci_node_map_for_wpeg(int wpeg_num, int last_bus) -{ - int twister = 0, node = 0; - int i, bus, num_buses; - - for (i = 0; i < rio_table_hdr->num_rio_dev; i++) { - if (rio_devs[i]->node_id == rio_devs[wpeg_num]->owner_id) { - twister = rio_devs[i]->owner_id; - break; - } - } - if (i == rio_table_hdr->num_rio_dev) { - pr_err("Couldn't find owner Cyclone for Winnipeg!\n"); - return last_bus; - } - - for (i = 0; i < rio_table_hdr->num_scal_dev; i++) { - if (scal_devs[i]->node_id == twister) { - node = scal_devs[i]->node_id; - break; - } - } - if (i == rio_table_hdr->num_scal_dev) { - pr_err("Couldn't find owner Twister for Cyclone!\n"); - return last_bus; - } - - switch (rio_devs[wpeg_num]->type) { - case CompatWPEG: - /* - * The Compatibility Winnipeg controls the 2 legacy buses, - * the 66MHz PCI bus [2 slots] and the 2 "extra" buses in case - * a PCI-PCI bridge card is used in either slot: total 5 buses. - */ - num_buses = 5; - break; - case AltWPEG: - /* - * The Alternate Winnipeg controls the 2 133MHz buses [1 slot - * each], their 2 "extra" buses, the 100MHz bus [2 slots] and - * the "extra" buses for each of those slots: total 7 buses. - */ - num_buses = 7; - break; - case LookOutAWPEG: - case LookOutBWPEG: - /* - * A Lookout Winnipeg controls 3 100MHz buses [2 slots each] - * & the "extra" buses for each of those slots: total 9 buses. - */ - num_buses = 9; - break; - default: - pr_info("Unsupported Winnipeg type!\n"); - return last_bus; - } - - for (bus = last_bus; bus < last_bus + num_buses; bus++) - mp_bus_id_to_node[bus] = node; - return bus; -} - -static int build_detail_arrays(void) -{ - unsigned long ptr; - int i, scal_detail_size, rio_detail_size; - - if (rio_table_hdr->num_scal_dev > MAX_NUMNODES) { - pr_warn("MAX_NUMNODES too low! Defined as %d, but system has %d nodes\n", - MAX_NUMNODES, rio_table_hdr->num_scal_dev); - return 0; - } - - switch (rio_table_hdr->version) { - default: - pr_warn("Invalid Rio Grande Table Version: %d\n", - rio_table_hdr->version); - return 0; - case 2: - scal_detail_size = 11; - rio_detail_size = 13; - break; - case 3: - scal_detail_size = 12; - rio_detail_size = 15; - break; - } - - ptr = (unsigned long)rio_table_hdr + 3; - for (i = 0; i < rio_table_hdr->num_scal_dev; i++, ptr += scal_detail_size) - scal_devs[i] = (struct scal_detail *)ptr; - - for (i = 0; i < rio_table_hdr->num_rio_dev; i++, ptr += rio_detail_size) - rio_devs[i] = (struct rio_detail *)ptr; - - return 1; -} - -void setup_summit(void) -{ - unsigned long ptr; - unsigned short offset; - int i, next_wpeg, next_bus = 0; - - /* The pointer to the EBDA is stored in the word @ phys 0x40E(40:0E) */ - ptr = get_bios_ebda(); - ptr = (unsigned long)phys_to_virt(ptr); - - rio_table_hdr = NULL; - offset = 0x180; - while (offset) { - /* The block id is stored in the 2nd word */ - if (*((unsigned short *)(ptr + offset + 2)) == 0x4752) { - /* set the pointer past the offset & block id */ - rio_table_hdr = (struct rio_table_hdr *)(ptr + offset + 4); - break; - } - /* The next offset is stored in the 1st word. 0 means no more */ - offset = *((unsigned short *)(ptr + offset)); - } - if (!rio_table_hdr) { - pr_err("Unable to locate Rio Grande Table in EBDA - bailing!\n"); - return; - } - - if (!build_detail_arrays()) - return; - - /* The first Winnipeg we're looking for has an index of 0 */ - next_wpeg = 0; - do { - for (i = 0; i < rio_table_hdr->num_rio_dev; i++) { - if (is_WPEG(rio_devs[i]) && rio_devs[i]->WP_index == next_wpeg) { - /* It's the Winnipeg we're looking for! */ - next_bus = setup_pci_node_map_for_wpeg(i, next_bus); - next_wpeg++; - break; - } - } - /* - * If we go through all Rio devices and don't find one with - * the next index, it means we've found all the Winnipegs, - * and thus all the PCI buses. - */ - if (i == rio_table_hdr->num_rio_dev) - next_wpeg = 0; - } while (next_wpeg != 0); -} -#endif - -static struct apic apic_summit = { - - .name = "summit", - .probe = probe_summit, - .acpi_madt_oem_check = summit_acpi_madt_oem_check, - .apic_id_valid = default_apic_id_valid, - .apic_id_registered = summit_apic_id_registered, - - .irq_delivery_mode = dest_LowestPrio, - /* logical delivery broadcast to all CPUs: */ - .irq_dest_mode = 1, - - .target_cpus = summit_target_cpus, - .disable_esr = 1, - .dest_logical = APIC_DEST_LOGICAL, - .check_apicid_used = summit_check_apicid_used, - .check_apicid_present = summit_check_apicid_present, - - .vector_allocation_domain = flat_vector_allocation_domain, - .init_apic_ldr = summit_init_apic_ldr, - - .ioapic_phys_id_map = summit_ioapic_phys_id_map, - .setup_apic_routing = summit_setup_apic_routing, - .multi_timer_check = NULL, - .cpu_present_to_apicid = summit_cpu_present_to_apicid, - .apicid_to_cpu_present = summit_apicid_to_cpu_present, - .setup_portio_remap = NULL, - .check_phys_apicid_present = summit_check_phys_apicid_present, - .enable_apic_mode = NULL, - .phys_pkg_id = summit_phys_pkg_id, - .mps_oem_check = summit_mps_oem_check, - - .get_apic_id = summit_get_apic_id, - .set_apic_id = NULL, - .apic_id_mask = 0xFF << 24, - - .cpu_mask_to_apicid_and = summit_cpu_mask_to_apicid_and, - - .send_IPI_mask = summit_send_IPI_mask, - .send_IPI_mask_allbutself = NULL, - .send_IPI_allbutself = summit_send_IPI_allbutself, - .send_IPI_all = summit_send_IPI_all, - .send_IPI_self = default_send_IPI_self, - - .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, - .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, - - .wait_for_init_deassert = true, - .smp_callin_clear_local_apic = NULL, - .inquire_remote_apic = default_inquire_remote_apic, - - .read = native_apic_mem_read, - .write = native_apic_mem_write, - .eoi_write = native_apic_mem_write, - .icr_read = native_apic_icr_read, - .icr_write = native_apic_icr_write, - .wait_icr_idle = native_apic_wait_icr_idle, - .safe_wait_icr_idle = native_safe_apic_wait_icr_idle, - - .x86_32_early_logical_apicid = summit_early_logical_apicid, -}; - -apic_driver(apic_summit); diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index 897d6201ef10..a80029035bf2 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -274,10 +274,6 @@ static void intel_workarounds(struct cpuinfo_x86 *c) } #endif -#ifdef CONFIG_X86_NUMAQ - numaq_tsc_disable(); -#endif - intel_smp_check(c); } #else diff --git a/arch/x86/kernel/cpu/intel_cacheinfo.c b/arch/x86/kernel/cpu/intel_cacheinfo.c index 0641113e2965..a952e9c85b6f 100644 --- a/arch/x86/kernel/cpu/intel_cacheinfo.c +++ b/arch/x86/kernel/cpu/intel_cacheinfo.c @@ -1225,21 +1225,24 @@ static struct notifier_block cacheinfo_cpu_notifier = { static int __init cache_sysfs_init(void) { - int i; + int i, err = 0; if (num_cache_leaves == 0) return 0; + cpu_notifier_register_begin(); for_each_online_cpu(i) { - int err; struct device *dev = get_cpu_device(i); err = cache_add_dev(dev); if (err) - return err; + goto out; } - register_hotcpu_notifier(&cacheinfo_cpu_notifier); - return 0; + __register_hotcpu_notifier(&cacheinfo_cpu_notifier); + +out: + cpu_notifier_register_done(); + return err; } device_initcall(cache_sysfs_init); diff --git a/arch/x86/kernel/cpu/match.c b/arch/x86/kernel/cpu/match.c index 36565373af87..afa9f0d487ea 100644 --- a/arch/x86/kernel/cpu/match.c +++ b/arch/x86/kernel/cpu/match.c @@ -47,45 +47,3 @@ const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match) return NULL; } EXPORT_SYMBOL(x86_match_cpu); - -ssize_t arch_print_cpu_modalias(struct device *dev, - struct device_attribute *attr, - char *bufptr) -{ - int size = PAGE_SIZE; - int i, n; - char *buf = bufptr; - - n = snprintf(buf, size, "x86cpu:vendor:%04X:family:%04X:" - "model:%04X:feature:", - boot_cpu_data.x86_vendor, - boot_cpu_data.x86, - boot_cpu_data.x86_model); - size -= n; - buf += n; - size -= 1; - for (i = 0; i < NCAPINTS*32; i++) { - if (boot_cpu_has(i)) { - n = snprintf(buf, size, ",%04X", i); - if (n >= size) { - WARN(1, "x86 features overflow page\n"); - break; - } - size -= n; - buf += n; - } - } - *buf++ = '\n'; - return buf - bufptr; -} - -int arch_cpu_uevent(struct device *dev, struct kobj_uevent_env *env) -{ - char *buf = kzalloc(PAGE_SIZE, GFP_KERNEL); - if (buf) { - arch_print_cpu_modalias(NULL, NULL, buf); - add_uevent_var(env, "MODALIAS=%s", buf); - kfree(buf); - } - return 0; -} diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c index 4d5419b249da..eeee23ff75ef 100644 --- a/arch/x86/kernel/cpu/mcheck/mce.c +++ b/arch/x86/kernel/cpu/mcheck/mce.c @@ -89,6 +89,9 @@ static DECLARE_WAIT_QUEUE_HEAD(mce_chrdev_wait); static DEFINE_PER_CPU(struct mce, mces_seen); static int cpu_missing; +/* CMCI storm detection filter */ +static DEFINE_PER_CPU(unsigned long, mce_polled_error); + /* * MCA banks polled by the period polling timer for corrected events. * With Intel CMCI, this only has MCA banks which do not support CMCI (if any). @@ -595,6 +598,7 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b) { struct mce m; int i; + unsigned long *v; this_cpu_inc(mce_poll_count); @@ -614,6 +618,8 @@ void machine_check_poll(enum mcp_flags flags, mce_banks_t *b) if (!(m.status & MCI_STATUS_VAL)) continue; + v = &get_cpu_var(mce_polled_error); + set_bit(0, v); /* * Uncorrected or signalled events are handled by the exception * handler when it is enabled, so don't process those here. @@ -1278,10 +1284,18 @@ static unsigned long mce_adjust_timer_default(unsigned long interval) static unsigned long (*mce_adjust_timer)(unsigned long interval) = mce_adjust_timer_default; +static int cmc_error_seen(void) +{ + unsigned long *v = &__get_cpu_var(mce_polled_error); + + return test_and_clear_bit(0, v); +} + static void mce_timer_fn(unsigned long data) { struct timer_list *t = &__get_cpu_var(mce_timer); unsigned long iv; + int notify; WARN_ON(smp_processor_id() != data); @@ -1296,7 +1310,9 @@ static void mce_timer_fn(unsigned long data) * polling interval, otherwise increase the polling interval. */ iv = __this_cpu_read(mce_next_interval); - if (mce_notify_irq()) { + notify = mce_notify_irq(); + notify |= cmc_error_seen(); + if (notify) { iv = max(iv / 2, (unsigned long) HZ/100); } else { iv = min(iv * 2, round_jiffies_relative(check_interval * HZ)); @@ -2434,14 +2450,18 @@ static __init int mcheck_init_device(void) if (err) return err; + cpu_notifier_register_begin(); for_each_online_cpu(i) { err = mce_device_create(i); - if (err) + if (err) { + cpu_notifier_register_done(); return err; + } } register_syscore_ops(&mce_syscore_ops); - register_hotcpu_notifier(&mce_cpu_notifier); + __register_hotcpu_notifier(&mce_cpu_notifier); + cpu_notifier_register_done(); /* register character device /dev/mcelog */ misc_register(&mce_chrdev_device); diff --git a/arch/x86/kernel/cpu/mcheck/mce_intel.c b/arch/x86/kernel/cpu/mcheck/mce_intel.c index fb6156fee6f7..3bdb95ae8c43 100644 --- a/arch/x86/kernel/cpu/mcheck/mce_intel.c +++ b/arch/x86/kernel/cpu/mcheck/mce_intel.c @@ -9,6 +9,7 @@ #include <linux/interrupt.h> #include <linux/percpu.h> #include <linux/sched.h> +#include <linux/cpumask.h> #include <asm/apic.h> #include <asm/processor.h> #include <asm/msr.h> @@ -137,6 +138,22 @@ unsigned long mce_intel_adjust_timer(unsigned long interval) } } +static void cmci_storm_disable_banks(void) +{ + unsigned long flags, *owned; + int bank; + u64 val; + + raw_spin_lock_irqsave(&cmci_discover_lock, flags); + owned = __get_cpu_var(mce_banks_owned); + for_each_set_bit(bank, owned, MAX_NR_BANKS) { + rdmsrl(MSR_IA32_MCx_CTL2(bank), val); + val &= ~MCI_CTL2_CMCI_EN; + wrmsrl(MSR_IA32_MCx_CTL2(bank), val); + } + raw_spin_unlock_irqrestore(&cmci_discover_lock, flags); +} + static bool cmci_storm_detect(void) { unsigned int cnt = __this_cpu_read(cmci_storm_cnt); @@ -158,7 +175,7 @@ static bool cmci_storm_detect(void) if (cnt <= CMCI_STORM_THRESHOLD) return false; - cmci_clear(); + cmci_storm_disable_banks(); __this_cpu_write(cmci_storm_state, CMCI_STORM_ACTIVE); r = atomic_add_return(1, &cmci_storm_on_cpus); mce_timer_kick(CMCI_POLL_INTERVAL); diff --git a/arch/x86/kernel/cpu/mcheck/therm_throt.c b/arch/x86/kernel/cpu/mcheck/therm_throt.c index 3eec7de76efb..d921b7ee6595 100644 --- a/arch/x86/kernel/cpu/mcheck/therm_throt.c +++ b/arch/x86/kernel/cpu/mcheck/therm_throt.c @@ -271,9 +271,6 @@ static void thermal_throttle_remove_dev(struct device *dev) sysfs_remove_group(&dev->kobj, &thermal_attr_group); } -/* Mutex protecting device creation against CPU hotplug: */ -static DEFINE_MUTEX(therm_cpu_lock); - /* Get notified when a cpu comes on/off. Be hotplug friendly. */ static int thermal_throttle_cpu_callback(struct notifier_block *nfb, @@ -289,18 +286,14 @@ thermal_throttle_cpu_callback(struct notifier_block *nfb, switch (action) { case CPU_UP_PREPARE: case CPU_UP_PREPARE_FROZEN: - mutex_lock(&therm_cpu_lock); err = thermal_throttle_add_dev(dev, cpu); - mutex_unlock(&therm_cpu_lock); WARN_ON(err); break; case CPU_UP_CANCELED: case CPU_UP_CANCELED_FROZEN: case CPU_DEAD: case CPU_DEAD_FROZEN: - mutex_lock(&therm_cpu_lock); thermal_throttle_remove_dev(dev); - mutex_unlock(&therm_cpu_lock); break; } return notifier_from_errno(err); @@ -319,19 +312,16 @@ static __init int thermal_throttle_init_device(void) if (!atomic_read(&therm_throt_en)) return 0; - register_hotcpu_notifier(&thermal_throttle_cpu_notifier); + cpu_notifier_register_begin(); -#ifdef CONFIG_HOTPLUG_CPU - mutex_lock(&therm_cpu_lock); -#endif /* connect live CPUs to sysfs */ for_each_online_cpu(cpu) { err = thermal_throttle_add_dev(get_cpu_device(cpu), cpu); WARN_ON(err); } -#ifdef CONFIG_HOTPLUG_CPU - mutex_unlock(&therm_cpu_lock); -#endif + + __register_hotcpu_notifier(&thermal_throttle_cpu_notifier); + cpu_notifier_register_done(); return 0; } diff --git a/arch/x86/kernel/cpu/perf_event_amd_ibs.c b/arch/x86/kernel/cpu/perf_event_amd_ibs.c index 4b8e4d3cd6ea..4c36bbe3173a 100644 --- a/arch/x86/kernel/cpu/perf_event_amd_ibs.c +++ b/arch/x86/kernel/cpu/perf_event_amd_ibs.c @@ -926,13 +926,13 @@ static __init int amd_ibs_init(void) goto out; perf_ibs_pm_init(); - get_online_cpus(); + cpu_notifier_register_begin(); ibs_caps = caps; /* make ibs_caps visible to other cpus: */ smp_mb(); - perf_cpu_notifier(perf_ibs_cpu_notifier); smp_call_function(setup_APIC_ibs, NULL, 1); - put_online_cpus(); + __perf_cpu_notifier(perf_ibs_cpu_notifier); + cpu_notifier_register_done(); ret = perf_event_ibs_init(); out: diff --git a/arch/x86/kernel/cpu/perf_event_amd_uncore.c b/arch/x86/kernel/cpu/perf_event_amd_uncore.c index 754291adec33..3bbdf4cd38b9 100644 --- a/arch/x86/kernel/cpu/perf_event_amd_uncore.c +++ b/arch/x86/kernel/cpu/perf_event_amd_uncore.c @@ -531,15 +531,16 @@ static int __init amd_uncore_init(void) if (ret) return -ENODEV; - get_online_cpus(); + cpu_notifier_register_begin(); + /* init cpus already online before registering for hotplug notifier */ for_each_online_cpu(cpu) { amd_uncore_cpu_up_prepare(cpu); smp_call_function_single(cpu, init_cpu_already_online, NULL, 1); } - register_cpu_notifier(&amd_uncore_cpu_notifier_block); - put_online_cpus(); + __register_cpu_notifier(&amd_uncore_cpu_notifier_block); + cpu_notifier_register_done(); return 0; } diff --git a/arch/x86/kernel/cpu/perf_event_intel_rapl.c b/arch/x86/kernel/cpu/perf_event_intel_rapl.c index 3cec947e3b98..4b9a9e9466bd 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_rapl.c +++ b/arch/x86/kernel/cpu/perf_event_intel_rapl.c @@ -673,19 +673,20 @@ static int __init rapl_pmu_init(void) /* unsupported */ return 0; } - get_online_cpus(); + + cpu_notifier_register_begin(); for_each_online_cpu(cpu) { rapl_cpu_prepare(cpu); rapl_cpu_init(cpu); } - perf_cpu_notifier(rapl_cpu_notifier); + __perf_cpu_notifier(rapl_cpu_notifier); ret = perf_pmu_register(&rapl_pmu_class, "power", -1); if (WARN_ON(ret)) { pr_info("RAPL PMU detected, registration failed (%d), RAPL PMU disabled\n", ret); - put_online_cpus(); + cpu_notifier_register_done(); return -1; } @@ -699,7 +700,7 @@ static int __init rapl_pmu_init(void) hweight32(rapl_cntr_mask), ktime_to_ms(pmu->timer_interval)); - put_online_cpus(); + cpu_notifier_register_done(); return 0; } diff --git a/arch/x86/kernel/cpu/perf_event_intel_uncore.c b/arch/x86/kernel/cpu/perf_event_intel_uncore.c index bd2253d40cff..65bbbea38b9c 100644 --- a/arch/x86/kernel/cpu/perf_event_intel_uncore.c +++ b/arch/x86/kernel/cpu/perf_event_intel_uncore.c @@ -4244,7 +4244,7 @@ static void __init uncore_cpumask_init(void) if (!cpumask_empty(&uncore_cpu_mask)) return; - get_online_cpus(); + cpu_notifier_register_begin(); for_each_online_cpu(cpu) { int i, phys_id = topology_physical_package_id(cpu); @@ -4263,9 +4263,9 @@ static void __init uncore_cpumask_init(void) } on_each_cpu(uncore_cpu_setup, NULL, 1); - register_cpu_notifier(&uncore_cpu_nb); + __register_cpu_notifier(&uncore_cpu_nb); - put_online_cpus(); + cpu_notifier_register_done(); } diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c index 7d9481c743f8..3225ae6c5180 100644 --- a/arch/x86/kernel/cpuid.c +++ b/arch/x86/kernel/cpuid.c @@ -198,14 +198,15 @@ static int __init cpuid_init(void) goto out_chrdev; } cpuid_class->devnode = cpuid_devnode; - get_online_cpus(); + + cpu_notifier_register_begin(); for_each_online_cpu(i) { err = cpuid_device_create(i); if (err != 0) goto out_class; } - register_hotcpu_notifier(&cpuid_class_cpu_notifier); - put_online_cpus(); + __register_hotcpu_notifier(&cpuid_class_cpu_notifier); + cpu_notifier_register_done(); err = 0; goto out; @@ -215,7 +216,7 @@ out_class: for_each_online_cpu(i) { cpuid_device_destroy(i); } - put_online_cpus(); + cpu_notifier_register_done(); class_destroy(cpuid_class); out_chrdev: __unregister_chrdev(CPUID_MAJOR, 0, NR_CPUS, "cpu/cpuid"); @@ -227,13 +228,13 @@ static void __exit cpuid_exit(void) { int cpu = 0; - get_online_cpus(); + cpu_notifier_register_begin(); for_each_online_cpu(cpu) cpuid_device_destroy(cpu); class_destroy(cpuid_class); __unregister_chrdev(CPUID_MAJOR, 0, NR_CPUS, "cpu/cpuid"); - unregister_hotcpu_notifier(&cpuid_class_cpu_notifier); - put_online_cpus(); + __unregister_hotcpu_notifier(&cpuid_class_cpu_notifier); + cpu_notifier_register_done(); } module_init(cpuid_init); diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c index 346b1df2412e..1abcb50b48ae 100644 --- a/arch/x86/kernel/dumpstack_64.c +++ b/arch/x86/kernel/dumpstack_64.c @@ -115,27 +115,26 @@ enum stack_type { }; static enum stack_type -analyze_stack(int cpu, struct task_struct *task, - unsigned long *stack, unsigned long **stack_end, char **id) +analyze_stack(int cpu, struct task_struct *task, unsigned long *stack, + unsigned long **stack_end, unsigned long *irq_stack, + unsigned *used, char **id) { - unsigned long *irq_stack; unsigned long addr; - unsigned used = 0; addr = ((unsigned long)stack & (~(THREAD_SIZE - 1))); if ((unsigned long)task_stack_page(task) == addr) return STACK_IS_NORMAL; *stack_end = in_exception_stack(cpu, (unsigned long)stack, - &used, id); + used, id); if (*stack_end) return STACK_IS_EXCEPTION; - *stack_end = (unsigned long *)per_cpu(irq_stack_ptr, cpu); - if (!*stack_end) - return STACK_IS_UNKNOWN; + if (!irq_stack) + return STACK_IS_NORMAL; - irq_stack = *stack_end - irq_stack_size; + *stack_end = irq_stack; + irq_stack = irq_stack - irq_stack_size; if (in_irq_stack(stack, irq_stack, *stack_end)) return STACK_IS_IRQ; @@ -156,8 +155,9 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, { const unsigned cpu = get_cpu(); struct thread_info *tinfo; - unsigned long *irq_stack; + unsigned long *irq_stack = (unsigned long *)per_cpu(irq_stack_ptr, cpu); unsigned long dummy; + unsigned used = 0; int graph = 0; int done = 0; @@ -186,7 +186,8 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, enum stack_type stype; char *id; - stype = analyze_stack(cpu, task, stack, &stack_end, &id); + stype = analyze_stack(cpu, task, stack, &stack_end, + irq_stack, &used, &id); /* Default finish unless specified to continue */ done = 1; @@ -226,7 +227,7 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, * pointer (index -1 to end) in the IRQ stack: */ stack = (unsigned long *) (stack_end[-1]); - irq_stack = stack_end - irq_stack_size; + irq_stack = NULL; ops->stack(data, "EOI"); done = 0; break; diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c index 6d7d5a1260a6..b0cc3809723d 100644 --- a/arch/x86/kernel/early-quirks.c +++ b/arch/x86/kernel/early-quirks.c @@ -225,7 +225,7 @@ static void __init intel_remapping_check(int num, int slot, int func) * * And yes, so far on current devices the base addr is always under 4G. */ -static u32 __init intel_stolen_base(int num, int slot, int func) +static u32 __init intel_stolen_base(int num, int slot, int func, size_t stolen_size) { u32 base; @@ -244,6 +244,114 @@ static u32 __init intel_stolen_base(int num, int slot, int func) #define MB(x) (KB (KB (x))) #define GB(x) (MB (KB (x))) +static size_t __init i830_tseg_size(void) +{ + u8 tmp = read_pci_config_byte(0, 0, 0, I830_ESMRAMC); + + if (!(tmp & TSEG_ENABLE)) + return 0; + + if (tmp & I830_TSEG_SIZE_1M) + return MB(1); + else + return KB(512); +} + +static size_t __init i845_tseg_size(void) +{ + u8 tmp = read_pci_config_byte(0, 0, 0, I845_ESMRAMC); + + if (!(tmp & TSEG_ENABLE)) + return 0; + + switch (tmp & I845_TSEG_SIZE_MASK) { + case I845_TSEG_SIZE_512K: + return KB(512); + case I845_TSEG_SIZE_1M: + return MB(1); + default: + WARN_ON(1); + return 0; + } +} + +static size_t __init i85x_tseg_size(void) +{ + u8 tmp = read_pci_config_byte(0, 0, 0, I85X_ESMRAMC); + + if (!(tmp & TSEG_ENABLE)) + return 0; + + return MB(1); +} + +static size_t __init i830_mem_size(void) +{ + return read_pci_config_byte(0, 0, 0, I830_DRB3) * MB(32); +} + +static size_t __init i85x_mem_size(void) +{ + return read_pci_config_byte(0, 0, 1, I85X_DRB3) * MB(32); +} + +/* + * On 830/845/85x the stolen memory base isn't available in any + * register. We need to calculate it as TOM-TSEG_SIZE-stolen_size. + */ +static u32 __init i830_stolen_base(int num, int slot, int func, size_t stolen_size) +{ + return i830_mem_size() - i830_tseg_size() - stolen_size; +} + +static u32 __init i845_stolen_base(int num, int slot, int func, size_t stolen_size) +{ + return i830_mem_size() - i845_tseg_size() - stolen_size; +} + +static u32 __init i85x_stolen_base(int num, int slot, int func, size_t stolen_size) +{ + return i85x_mem_size() - i85x_tseg_size() - stolen_size; +} + +static u32 __init i865_stolen_base(int num, int slot, int func, size_t stolen_size) +{ + /* + * FIXME is the graphics stolen memory region + * always at TOUD? Ie. is it always the last + * one to be allocated by the BIOS? + */ + return read_pci_config_16(0, 0, 0, I865_TOUD) << 16; +} + +static size_t __init i830_stolen_size(int num, int slot, int func) +{ + size_t stolen_size; + u16 gmch_ctrl; + + gmch_ctrl = read_pci_config_16(0, 0, 0, I830_GMCH_CTRL); + + switch (gmch_ctrl & I830_GMCH_GMS_MASK) { + case I830_GMCH_GMS_STOLEN_512: + stolen_size = KB(512); + break; + case I830_GMCH_GMS_STOLEN_1024: + stolen_size = MB(1); + break; + case I830_GMCH_GMS_STOLEN_8192: + stolen_size = MB(8); + break; + case I830_GMCH_GMS_LOCAL: + /* local memory isn't part of the normal address space */ + stolen_size = 0; + break; + default: + return 0; + } + + return stolen_size; +} + static size_t __init gen3_stolen_size(int num, int slot, int func) { size_t stolen_size; @@ -310,7 +418,7 @@ static size_t __init gen6_stolen_size(int num, int slot, int func) return gmch_ctrl << 25; /* 32 MB units */ } -static inline size_t gen8_stolen_size(int num, int slot, int func) +static size_t gen8_stolen_size(int num, int slot, int func) { u16 gmch_ctrl; @@ -320,31 +428,74 @@ static inline size_t gen8_stolen_size(int num, int slot, int func) return gmch_ctrl << 25; /* 32 MB units */ } -typedef size_t (*stolen_size_fn)(int num, int slot, int func); + +struct intel_stolen_funcs { + size_t (*size)(int num, int slot, int func); + u32 (*base)(int num, int slot, int func, size_t size); +}; + +static const struct intel_stolen_funcs i830_stolen_funcs = { + .base = i830_stolen_base, + .size = i830_stolen_size, +}; + +static const struct intel_stolen_funcs i845_stolen_funcs = { + .base = i845_stolen_base, + .size = i830_stolen_size, +}; + +static const struct intel_stolen_funcs i85x_stolen_funcs = { + .base = i85x_stolen_base, + .size = gen3_stolen_size, +}; + +static const struct intel_stolen_funcs i865_stolen_funcs = { + .base = i865_stolen_base, + .size = gen3_stolen_size, +}; + +static const struct intel_stolen_funcs gen3_stolen_funcs = { + .base = intel_stolen_base, + .size = gen3_stolen_size, +}; + +static const struct intel_stolen_funcs gen6_stolen_funcs = { + .base = intel_stolen_base, + .size = gen6_stolen_size, +}; + +static const struct intel_stolen_funcs gen8_stolen_funcs = { + .base = intel_stolen_base, + .size = gen8_stolen_size, +}; static struct pci_device_id intel_stolen_ids[] __initdata = { - INTEL_I915G_IDS(gen3_stolen_size), - INTEL_I915GM_IDS(gen3_stolen_size), - INTEL_I945G_IDS(gen3_stolen_size), - INTEL_I945GM_IDS(gen3_stolen_size), - INTEL_VLV_M_IDS(gen6_stolen_size), - INTEL_VLV_D_IDS(gen6_stolen_size), - INTEL_PINEVIEW_IDS(gen3_stolen_size), - INTEL_I965G_IDS(gen3_stolen_size), - INTEL_G33_IDS(gen3_stolen_size), - INTEL_I965GM_IDS(gen3_stolen_size), - INTEL_GM45_IDS(gen3_stolen_size), - INTEL_G45_IDS(gen3_stolen_size), - INTEL_IRONLAKE_D_IDS(gen3_stolen_size), - INTEL_IRONLAKE_M_IDS(gen3_stolen_size), - INTEL_SNB_D_IDS(gen6_stolen_size), - INTEL_SNB_M_IDS(gen6_stolen_size), - INTEL_IVB_M_IDS(gen6_stolen_size), - INTEL_IVB_D_IDS(gen6_stolen_size), - INTEL_HSW_D_IDS(gen6_stolen_size), - INTEL_HSW_M_IDS(gen6_stolen_size), - INTEL_BDW_M_IDS(gen8_stolen_size), - INTEL_BDW_D_IDS(gen8_stolen_size) + INTEL_I830_IDS(&i830_stolen_funcs), + INTEL_I845G_IDS(&i845_stolen_funcs), + INTEL_I85X_IDS(&i85x_stolen_funcs), + INTEL_I865G_IDS(&i865_stolen_funcs), + INTEL_I915G_IDS(&gen3_stolen_funcs), + INTEL_I915GM_IDS(&gen3_stolen_funcs), + INTEL_I945G_IDS(&gen3_stolen_funcs), + INTEL_I945GM_IDS(&gen3_stolen_funcs), + INTEL_VLV_M_IDS(&gen6_stolen_funcs), + INTEL_VLV_D_IDS(&gen6_stolen_funcs), + INTEL_PINEVIEW_IDS(&gen3_stolen_funcs), + INTEL_I965G_IDS(&gen3_stolen_funcs), + INTEL_G33_IDS(&gen3_stolen_funcs), + INTEL_I965GM_IDS(&gen3_stolen_funcs), + INTEL_GM45_IDS(&gen3_stolen_funcs), + INTEL_G45_IDS(&gen3_stolen_funcs), + INTEL_IRONLAKE_D_IDS(&gen3_stolen_funcs), + INTEL_IRONLAKE_M_IDS(&gen3_stolen_funcs), + INTEL_SNB_D_IDS(&gen6_stolen_funcs), + INTEL_SNB_M_IDS(&gen6_stolen_funcs), + INTEL_IVB_M_IDS(&gen6_stolen_funcs), + INTEL_IVB_D_IDS(&gen6_stolen_funcs), + INTEL_HSW_D_IDS(&gen6_stolen_funcs), + INTEL_HSW_M_IDS(&gen6_stolen_funcs), + INTEL_BDW_M_IDS(&gen8_stolen_funcs), + INTEL_BDW_D_IDS(&gen8_stolen_funcs) }; static void __init intel_graphics_stolen(int num, int slot, int func) @@ -361,11 +512,13 @@ static void __init intel_graphics_stolen(int num, int slot, int func) for (i = 0; i < ARRAY_SIZE(intel_stolen_ids); i++) { if (intel_stolen_ids[i].device == device) { - stolen_size_fn stolen_size = - (stolen_size_fn)intel_stolen_ids[i].driver_data; - size = stolen_size(num, slot, func); - start = intel_stolen_base(num, slot, func); + const struct intel_stolen_funcs *stolen_funcs = + (const struct intel_stolen_funcs *)intel_stolen_ids[i].driver_data; + size = stolen_funcs->size(num, slot, func); + start = stolen_funcs->base(num, slot, func, size); if (size && start) { + printk(KERN_INFO "Reserving Intel graphics stolen memory at 0x%x-0x%x\n", + start, start + (u32)size - 1); /* Mark this space as reserved */ e820_add_region(start, size, E820_RESERVED); sanitize_e820_map(e820.map, diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c index e6253195a301..52819e816f87 100644 --- a/arch/x86/kernel/ftrace.c +++ b/arch/x86/kernel/ftrace.c @@ -308,7 +308,10 @@ static int ftrace_write(unsigned long ip, const char *val, int size) if (within(ip, (unsigned long)_text, (unsigned long)_etext)) ip = (unsigned long)__va(__pa_symbol(ip)); - return probe_kernel_write((void *)ip, val, size); + if (probe_kernel_write((void *)ip, val, size)) + return -EPERM; + + return 0; } static int add_break(unsigned long ip, const char *old) @@ -323,10 +326,7 @@ static int add_break(unsigned long ip, const char *old) if (memcmp(replaced, old, MCOUNT_INSN_SIZE) != 0) return -EINVAL; - if (ftrace_write(ip, &brk, 1)) - return -EPERM; - - return 0; + return ftrace_write(ip, &brk, 1); } static int add_brk_on_call(struct dyn_ftrace *rec, unsigned long addr) @@ -425,7 +425,7 @@ static int remove_breakpoint(struct dyn_ftrace *rec) /* If this does not have a breakpoint, we are done */ if (ins[0] != brk) - return -1; + return 0; nop = ftrace_nop_replace(); @@ -455,7 +455,7 @@ static int remove_breakpoint(struct dyn_ftrace *rec) } update: - return probe_kernel_write((void *)ip, &nop[0], 1); + return ftrace_write(ip, nop, 1); } static int add_update_code(unsigned long ip, unsigned const char *new) @@ -463,9 +463,7 @@ static int add_update_code(unsigned long ip, unsigned const char *new) /* skip breakpoint */ ip++; new++; - if (ftrace_write(ip, new, MCOUNT_INSN_SIZE - 1)) - return -EPERM; - return 0; + return ftrace_write(ip, new, MCOUNT_INSN_SIZE - 1); } static int add_update_call(struct dyn_ftrace *rec, unsigned long addr) @@ -520,10 +518,7 @@ static int finish_update_call(struct dyn_ftrace *rec, unsigned long addr) new = ftrace_call_replace(ip, addr); - if (ftrace_write(ip, new, 1)) - return -EPERM; - - return 0; + return ftrace_write(ip, new, 1); } static int finish_update_nop(struct dyn_ftrace *rec) @@ -533,9 +528,7 @@ static int finish_update_nop(struct dyn_ftrace *rec) new = ftrace_nop_replace(); - if (ftrace_write(ip, new, 1)) - return -EPERM; - return 0; + return ftrace_write(ip, new, 1); } static int finish_update(struct dyn_ftrace *rec, int enable) @@ -632,8 +625,14 @@ void ftrace_replace_code(int enable) printk(KERN_WARNING "Failed on %s (%d):\n", report, count); for_ftrace_rec_iter(iter) { rec = ftrace_rec_iter_record(iter); - remove_breakpoint(rec); + /* + * Breakpoints are handled only when this function is in + * progress. The system could not work with them. + */ + if (remove_breakpoint(rec)) + BUG(); } + run_sync(); } static int @@ -655,16 +654,19 @@ ftrace_modify_code(unsigned long ip, unsigned const char *old_code, run_sync(); ret = ftrace_write(ip, new_code, 1); - if (ret) { - ret = -EPERM; - goto out; - } - run_sync(); + /* + * The breakpoint is handled only when this function is in progress. + * The system could not work if we could not remove it. + */ + BUG_ON(ret); out: + run_sync(); return ret; fail_update: - probe_kernel_write((void *)ip, &old_code[0], 1); + /* Also here the system could not work with the breakpoint */ + if (ftrace_write(ip, old_code, 1)) + BUG(); goto out; } @@ -678,11 +680,8 @@ void arch_ftrace_update_code(int command) atomic_dec(&modifying_ftrace_code); } -int __init ftrace_dyn_arch_init(void *data) +int __init ftrace_dyn_arch_init(void) { - /* The return code is retured via data */ - *(unsigned long *)data = 0; - return 0; } #endif diff --git a/arch/x86/kernel/hpet.c b/arch/x86/kernel/hpet.c index 014618dbaa7b..8d80ae011603 100644 --- a/arch/x86/kernel/hpet.c +++ b/arch/x86/kernel/hpet.c @@ -752,9 +752,7 @@ static struct clocksource clocksource_hpet = { .mask = HPET_MASK, .flags = CLOCK_SOURCE_IS_CONTINUOUS, .resume = hpet_resume_counter, -#ifdef CONFIG_X86_64 .archdata = { .vclock_mode = VCLOCK_HPET }, -#endif }; static int hpet_clocksource_register(void) @@ -943,12 +941,14 @@ static __init int hpet_late_init(void) if (boot_cpu_has(X86_FEATURE_ARAT)) return 0; + cpu_notifier_register_begin(); for_each_online_cpu(cpu) { hpet_cpuhp_notify(NULL, CPU_ONLINE, (void *)(long)cpu); } /* This notifier should be called after workqueue is ready */ - hotcpu_notifier(hpet_cpuhp_notify, -20); + __hotcpu_notifier(hpet_cpuhp_notify, -20); + cpu_notifier_register_done(); return 0; } diff --git a/arch/x86/kernel/irq.c b/arch/x86/kernel/irq.c index 42805fac0092..283a76a9cc40 100644 --- a/arch/x86/kernel/irq.c +++ b/arch/x86/kernel/irq.c @@ -125,7 +125,7 @@ int arch_show_interrupts(struct seq_file *p, int prec) seq_printf(p, "%10u ", per_cpu(mce_poll_count, j)); seq_printf(p, " Machine check polls\n"); #endif -#if defined(CONFIG_HYPERV) || defined(CONFIG_XEN) +#if IS_ENABLED(CONFIG_HYPERV) || defined(CONFIG_XEN) seq_printf(p, "%*s: ", prec, "THR"); for_each_online_cpu(j) seq_printf(p, "%10u ", irq_stats(j)->irq_hv_callback_count); diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index 713f1b3bad52..0331cb389d68 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -417,7 +417,6 @@ void kvm_disable_steal_time(void) #ifdef CONFIG_SMP static void __init kvm_smp_prepare_boot_cpu(void) { - WARN_ON(kvm_register_clock("primary cpu clock")); kvm_guest_cpu_init(); native_smp_prepare_boot_cpu(); kvm_spinlock_init(); diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c index e6041094ff26..d9156ceecdff 100644 --- a/arch/x86/kernel/kvmclock.c +++ b/arch/x86/kernel/kvmclock.c @@ -242,7 +242,7 @@ void __init kvmclock_init(void) hv_clock = __va(mem); memset(hv_clock, 0, size); - if (kvm_register_clock("boot clock")) { + if (kvm_register_clock("primary cpu clock")) { hv_clock = NULL; memblock_free(mem, size); return; diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c index ebc987398923..af1d14a9ebda 100644 --- a/arch/x86/kernel/ldt.c +++ b/arch/x86/kernel/ldt.c @@ -229,6 +229,17 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode) } } + /* + * On x86-64 we do not support 16-bit segments due to + * IRET leaking the high bits of the kernel stack address. + */ +#ifdef CONFIG_X86_64 + if (!ldt_info.seg_32bit) { + error = -EINVAL; + goto out_unlock; + } +#endif + fill_ldt(&ldt, &ldt_info); if (oldmode) ldt.avl = 0; diff --git a/arch/x86/kernel/msr.c b/arch/x86/kernel/msr.c index 05266b5aae22..c9603ac80de5 100644 --- a/arch/x86/kernel/msr.c +++ b/arch/x86/kernel/msr.c @@ -259,14 +259,15 @@ static int __init msr_init(void) goto out_chrdev; } msr_class->devnode = msr_devnode; - get_online_cpus(); + + cpu_notifier_register_begin(); for_each_online_cpu(i) { err = msr_device_create(i); if (err != 0) goto out_class; } - register_hotcpu_notifier(&msr_class_cpu_notifier); - put_online_cpus(); + __register_hotcpu_notifier(&msr_class_cpu_notifier); + cpu_notifier_register_done(); err = 0; goto out; @@ -275,7 +276,7 @@ out_class: i = 0; for_each_online_cpu(i) msr_device_destroy(i); - put_online_cpus(); + cpu_notifier_register_done(); class_destroy(msr_class); out_chrdev: __unregister_chrdev(MSR_MAJOR, 0, NR_CPUS, "cpu/msr"); @@ -286,13 +287,14 @@ out: static void __exit msr_exit(void) { int cpu = 0; - get_online_cpus(); + + cpu_notifier_register_begin(); for_each_online_cpu(cpu) msr_device_destroy(cpu); class_destroy(msr_class); __unregister_chrdev(MSR_MAJOR, 0, NR_CPUS, "cpu/msr"); - unregister_hotcpu_notifier(&msr_class_cpu_notifier); - put_online_cpus(); + __unregister_hotcpu_notifier(&msr_class_cpu_notifier); + cpu_notifier_register_done(); } module_init(msr_init); diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c index 299d49302e7d..0497f719977d 100644 --- a/arch/x86/kernel/pci-calgary_64.c +++ b/arch/x86/kernel/pci-calgary_64.c @@ -1207,23 +1207,31 @@ error: return ret; } -static inline int __init determine_tce_table_size(u64 ram) +static inline int __init determine_tce_table_size(void) { int ret; if (specified_table_size != TCE_TABLE_SIZE_UNSPECIFIED) return specified_table_size; - /* - * Table sizes are from 0 to 7 (TCE_TABLE_SIZE_64K to - * TCE_TABLE_SIZE_8M). Table size 0 has 8K entries and each - * larger table size has twice as many entries, so shift the - * max ram address by 13 to divide by 8K and then look at the - * order of the result to choose between 0-7. - */ - ret = get_order(ram >> 13); - if (ret > TCE_TABLE_SIZE_8M) + if (is_kdump_kernel() && saved_max_pfn) { + /* + * Table sizes are from 0 to 7 (TCE_TABLE_SIZE_64K to + * TCE_TABLE_SIZE_8M). Table size 0 has 8K entries and each + * larger table size has twice as many entries, so shift the + * max ram address by 13 to divide by 8K and then look at the + * order of the result to choose between 0-7. + */ + ret = get_order((saved_max_pfn * PAGE_SIZE) >> 13); + if (ret > TCE_TABLE_SIZE_8M) + ret = TCE_TABLE_SIZE_8M; + } else { + /* + * Use 8M by default (suggested by Muli) if it's not + * kdump kernel and saved_max_pfn isn't set. + */ ret = TCE_TABLE_SIZE_8M; + } return ret; } @@ -1418,8 +1426,7 @@ int __init detect_calgary(void) return -ENOMEM; } - specified_table_size = determine_tce_table_size((is_kdump_kernel() ? - saved_max_pfn : max_pfn) * PAGE_SIZE); + specified_table_size = determine_tce_table_size(); for (bus = 0; bus < MAX_PHB_BUS_NUM; bus++) { struct calgary_bus_info *info = &bus_info[bus]; diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index fa511acff7e6..09c76d265550 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -869,7 +869,6 @@ void __init setup_arch(char **cmdline_p) #ifdef CONFIG_X86_32 memcpy(&boot_cpu_data, &new_cpu_data, sizeof(new_cpu_data)); - visws_early_detect(); /* * copy kernel address range established so far and switch diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index cfbe99f88830..57e5ce126d5a 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -914,8 +914,7 @@ static int time_cpufreq_notifier(struct notifier_block *nb, unsigned long val, tsc_khz_ref = tsc_khz; } if ((val == CPUFREQ_PRECHANGE && freq->old < freq->new) || - (val == CPUFREQ_POSTCHANGE && freq->old > freq->new) || - (val == CPUFREQ_RESUMECHANGE)) { + (val == CPUFREQ_POSTCHANGE && freq->old > freq->new)) { *lpj = cpufreq_scale(loops_per_jiffy_ref, ref_freq, freq->new); tsc_khz = cpufreq_scale(tsc_khz_ref, ref_freq, freq->new); @@ -985,9 +984,7 @@ static struct clocksource clocksource_tsc = { .mask = CLOCKSOURCE_MASK(64), .flags = CLOCK_SOURCE_IS_CONTINUOUS | CLOCK_SOURCE_MUST_VERIFY, -#ifdef CONFIG_X86_64 .archdata = { .vclock_mode = VCLOCK_TSC }, -#endif }; void mark_tsc_unstable(char *reason) diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index da6b35a98260..49edf2dd3613 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -147,7 +147,6 @@ SECTIONS _edata = .; } :data -#ifdef CONFIG_X86_64 . = ALIGN(PAGE_SIZE); __vvar_page = .; @@ -165,12 +164,15 @@ SECTIONS #undef __VVAR_KERNEL_LDS #undef EMIT_VVAR + /* + * Pad the rest of the page with zeros. Otherwise the loader + * can leave garbage here. + */ + . = __vvar_beginning_hack + PAGE_SIZE; } :data . = ALIGN(__vvar_page + PAGE_SIZE, PAGE_SIZE); -#endif /* CONFIG_X86_64 */ - /* Init code and data - will be freed after init */ . = ALIGN(PAGE_SIZE); .init.begin : AT(ADDR(.init.begin) - LOAD_OFFSET) { diff --git a/arch/x86/kernel/vsyscall_64.c b/arch/x86/kernel/vsyscall_64.c index 1f96f9347ed9..8b3b3eb3cead 100644 --- a/arch/x86/kernel/vsyscall_64.c +++ b/arch/x86/kernel/vsyscall_64.c @@ -47,14 +47,12 @@ #include <asm/segment.h> #include <asm/desc.h> #include <asm/topology.h> -#include <asm/vgtod.h> #include <asm/traps.h> #define CREATE_TRACE_POINTS #include "vsyscall_trace.h" DEFINE_VVAR(int, vgetcpu_mode); -DEFINE_VVAR(struct vsyscall_gtod_data, vsyscall_gtod_data); static enum { EMULATE, NATIVE, NONE } vsyscall_mode = EMULATE; @@ -77,48 +75,6 @@ static int __init vsyscall_setup(char *str) } early_param("vsyscall", vsyscall_setup); -void update_vsyscall_tz(void) -{ - vsyscall_gtod_data.sys_tz = sys_tz; -} - -void update_vsyscall(struct timekeeper *tk) -{ - struct vsyscall_gtod_data *vdata = &vsyscall_gtod_data; - - write_seqcount_begin(&vdata->seq); - - /* copy vsyscall data */ - vdata->clock.vclock_mode = tk->clock->archdata.vclock_mode; - vdata->clock.cycle_last = tk->clock->cycle_last; - vdata->clock.mask = tk->clock->mask; - vdata->clock.mult = tk->mult; - vdata->clock.shift = tk->shift; - - vdata->wall_time_sec = tk->xtime_sec; - vdata->wall_time_snsec = tk->xtime_nsec; - - vdata->monotonic_time_sec = tk->xtime_sec - + tk->wall_to_monotonic.tv_sec; - vdata->monotonic_time_snsec = tk->xtime_nsec - + (tk->wall_to_monotonic.tv_nsec - << tk->shift); - while (vdata->monotonic_time_snsec >= - (((u64)NSEC_PER_SEC) << tk->shift)) { - vdata->monotonic_time_snsec -= - ((u64)NSEC_PER_SEC) << tk->shift; - vdata->monotonic_time_sec++; - } - - vdata->wall_time_coarse.tv_sec = tk->xtime_sec; - vdata->wall_time_coarse.tv_nsec = (long)(tk->xtime_nsec >> tk->shift); - - vdata->monotonic_time_coarse = timespec_add(vdata->wall_time_coarse, - tk->wall_to_monotonic); - - write_seqcount_end(&vdata->seq); -} - static void warn_bad_vsyscall(const char *level, struct pt_regs *regs, const char *message) { @@ -374,7 +330,6 @@ void __init map_vsyscall(void) { extern char __vsyscall_page; unsigned long physaddr_vsyscall = __pa_symbol(&__vsyscall_page); - extern char __vvar_page; unsigned long physaddr_vvar_page = __pa_symbol(&__vvar_page); __set_fixmap(VSYSCALL_FIRST_PAGE, physaddr_vsyscall, @@ -393,9 +348,13 @@ static int __init vsyscall_init(void) { BUG_ON(VSYSCALL_ADDR(0) != __fix_to_virt(VSYSCALL_FIRST_PAGE)); + cpu_notifier_register_begin(); + on_each_cpu(cpu_vsyscall_init, NULL, 1); /* notifier priority > KVM */ - hotcpu_notifier(cpu_vsyscall_notifier, 30); + __hotcpu_notifier(cpu_vsyscall_notifier, 30); + + cpu_notifier_register_done(); return 0; } diff --git a/arch/x86/kernel/vsyscall_gtod.c b/arch/x86/kernel/vsyscall_gtod.c new file mode 100644 index 000000000000..f9c6e56e14b5 --- /dev/null +++ b/arch/x86/kernel/vsyscall_gtod.c @@ -0,0 +1,69 @@ +/* + * Copyright (C) 2001 Andrea Arcangeli <andrea@suse.de> SuSE + * Copyright 2003 Andi Kleen, SuSE Labs. + * + * Modified for x86 32 bit architecture by + * Stefani Seibold <stefani@seibold.net> + * sponsored by Rohde & Schwarz GmbH & Co. KG Munich/Germany + * + * Thanks to hpa@transmeta.com for some useful hint. + * Special thanks to Ingo Molnar for his early experience with + * a different vsyscall implementation for Linux/IA32 and for the name. + * + */ + +#include <linux/timekeeper_internal.h> +#include <asm/vgtod.h> +#include <asm/vvar.h> + +DEFINE_VVAR(struct vsyscall_gtod_data, vsyscall_gtod_data); + +void update_vsyscall_tz(void) +{ + vsyscall_gtod_data.tz_minuteswest = sys_tz.tz_minuteswest; + vsyscall_gtod_data.tz_dsttime = sys_tz.tz_dsttime; +} + +void update_vsyscall(struct timekeeper *tk) +{ + struct vsyscall_gtod_data *vdata = &vsyscall_gtod_data; + + gtod_write_begin(vdata); + + /* copy vsyscall data */ + vdata->vclock_mode = tk->clock->archdata.vclock_mode; + vdata->cycle_last = tk->clock->cycle_last; + vdata->mask = tk->clock->mask; + vdata->mult = tk->mult; + vdata->shift = tk->shift; + + vdata->wall_time_sec = tk->xtime_sec; + vdata->wall_time_snsec = tk->xtime_nsec; + + vdata->monotonic_time_sec = tk->xtime_sec + + tk->wall_to_monotonic.tv_sec; + vdata->monotonic_time_snsec = tk->xtime_nsec + + (tk->wall_to_monotonic.tv_nsec + << tk->shift); + while (vdata->monotonic_time_snsec >= + (((u64)NSEC_PER_SEC) << tk->shift)) { + vdata->monotonic_time_snsec -= + ((u64)NSEC_PER_SEC) << tk->shift; + vdata->monotonic_time_sec++; + } + + vdata->wall_time_coarse_sec = tk->xtime_sec; + vdata->wall_time_coarse_nsec = (long)(tk->xtime_nsec >> tk->shift); + + vdata->monotonic_time_coarse_sec = + vdata->wall_time_coarse_sec + tk->wall_to_monotonic.tv_sec; + vdata->monotonic_time_coarse_nsec = + vdata->wall_time_coarse_nsec + tk->wall_to_monotonic.tv_nsec; + + while (vdata->monotonic_time_coarse_nsec >= NSEC_PER_SEC) { + vdata->monotonic_time_coarse_nsec -= NSEC_PER_SEC; + vdata->monotonic_time_coarse_sec++; + } + + gtod_write_end(vdata); +} |