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2008-07-08x86 boot: only pick up additional EFI memmap if add_efi_memmap flagPaul Jackson
Applies on top of the previous patch: x86 boot: add code to add BIOS provided EFI memory entries to kernel Instead of always adding EFI memory map entries (if present) to the memory map after initially finding either E820 BIOS memory map entries and/or kernel command line memmap entries, -instead- only add such additional EFI memory map entries if the kernel boot option: add_efi_memmap is specified. Requiring this 'add_efi_memmap' option is backward compatible with kernels that didn't load such additional EFI memory map entries in the first place, and it doesn't override a configuration that tries to replace all E820 or EFI BIOS memory map entries with ones given entirely on the kernel command line. Signed-off-by: Paul Jackson <pj@sgi.com> Cc: "Yinghai Lu" <yhlu.kernel@gmail.com> Cc: "Jack Steiner" <steiner@sgi.com> Cc: "Mike Travis" <travis@sgi.com> Cc: "Huang Cc: Ying" <ying.huang@intel.com> Cc: "Andi Kleen" <andi@firstfloor.org> Cc: "Andrew Morton" <akpm@linux-foundation.org> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08mm, generic, x86 boot: more tweaks to hex prints of some pfn addressesPaul Jackson
Fix some problems with (and applies on top of) a previous patch: x86 boot: show pfn addresses in hex not decimal in some kernel info printks Primarily change "0x%8lx" format, which displays with a right aligned space filled hex number (spaces between the "0x" prefix and the number), into "%0#10lx" format, which zero fills instead of space fills, and which uses the printf flag '#' to request the "0x" prefix instead of hard coding it. Also replace some other "0x%lx" formats with "%#lx", making use of the '#' printf flag again. Signed-off-by: Paul Jackson <pj@sgi.com> Cc: "Yinghai Lu" <yhlu.kernel@gmail.com> Cc: "Jack Steiner" <steiner@sgi.com> Cc: "Mike Travis" <travis@sgi.com> Cc: "Huang Cc: Ying" <ying.huang@intel.com> Cc: "Andi Kleen" <andi@firstfloor.org> Cc: "Andrew Morton" <akpm@linux-foundation.org> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: cleanup e820_setup_gap(), add e820_search_gap(), v2Alok Kataria
This is a preparatory patch for the next patch in series. Moves some code from e820_setup_gap to a new function e820_search_gap. This patch is a part of a bug fix where we walk the ACPI table to calculate a gap for PCI optional devices. v1->v2: Patch on top of tip/master. Fixes a bug introduced in the last patch about the typeof "last". Also the new function e820_search_gap now returns if we found a gap in e820_map. Signed-off-by: Alok N Kataria <akataria@vmware.com> Cc: lenb@kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: remove end_pfn in 64bitYinghai Lu
and use max_pfn directly. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: numa 32 using apicid_2_node to get node for logical_apicidYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: change size if e820_update/remove_rangeYinghai Lu
in case someone using crazy parameter while calling them. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: add table_top check for alloc_low_page in 64 bitYinghai Lu
that range is from find_e820_area, so don't try to use end_pfn to see if out of boundary...use table_top instead to avoid possible strange result while cross the boundary... also change early_printk to printk, because init_memory_mapping is after early param parsing, and console=uart8250 already working at that time. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: get max_pfn_mapped in init_memory_mappingYinghai Lu
so don't shift that in the loop Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: fix e820_update_range size when overlappingYinghai Lu
before that we relay on sanitize_e820_map to remove the overlap. but e820_update_range(,,E820_RESERVED, E820_RAM) will not work this patch fix that who is going to use this? Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: introduce init_memory_mapping for 32bit #3Yinghai Lu
move kva related early backto initmem_init for numa32 Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: introduce init_memory_mapping for 32bit #2Yinghai Lu
moving relocate_initrd early Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: introduce init_memory_mapping for 32bit #1Yinghai Lu
... so can we use mem below max_low_pfn earlier. this allows us to move several functions more early instead of waiting to after paging_init. That includes moving relocate_initrd() earlier in the bootup, and kva related early setup done in initmem_init. (in followup patches) Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: unify mmu_context.hJeremy Fitzhardinge
Some amount of asm-x86/mmu_context.h can be unified, including activate_mm paravirt hook. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: unify pgd_indexJeremy Fitzhardinge
pgd_index is common for 32 and 64-bit, so move it to a common place. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86, 64-bit: use __pgd() on mk_kernel_pgd()Eduardo Habkost
Use __pgd() on mk_kernel_pgd() Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86, 64-bit: add gate_offset() and gate_segment() macrosJeremy Fitzhardinge
For calculating the offset from struct gate_struct fields. [ gate_offset and gate_segment were broken for 32-bit. ] Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86, 64-bit: unify early_ioremapJeremy Fitzhardinge
The 32-bit early_ioremap will work equally well for 64-bit, so just use it. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86, 64-bit: use p??_populate() to attach pages to pagetableJeremy Fitzhardinge
Use the _populate() functions to attach new pages to a pagetable, to make sure the right paravirt_ops calls get called. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86, 64-bit: use write_gdt_entry in vsyscall_set_cpuJeremy Fitzhardinge
Use write_gdt_entry to generate the special vgetcpu descriptor in the vsyscall page. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: remove open-coded save/load segment operationsJeremy Fitzhardinge
This removes a pile of buggy open-coded implementations of savesegment and loadsegment. (They are buggy because they don't have memory barriers to prevent them from being reordered with respect to memory accesses.) Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: add memory barriers to wrmsrJeremy Fitzhardinge
wrmsr is a special instruction which can have arbitrary system-wide effects. We don't want the compiler to reorder it with respect to memory operations, so make it a memory barrier. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: add memory clobber to save/loadsegmentJeremy Fitzhardinge
Add "memory" clobbers to savesegment and loadsegment, since they can affect memory accesses and we never want the compiler to reorder them with respect to memory references. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: asm-x86/pgtable.h: fix compiler warningJeremy Fitzhardinge
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Cc: xen-devel <xen-devel@lists.xensource.com> Cc: Stephen Tweedie <sct@redhat.com> Cc: Eduardo Habkost <ehabkost@redhat.com> Cc: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: nmi_watchdog - introduce nmi_watchdog_active() helperCyrill Gorcunov
Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: macro@linux-mips.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: nmi_watchdog - use NMI_NONE by defaultCyrill Gorcunov
There is no need to keep NMI_DISABLED definition and use it for nmi_watchdog by default. Here is the point why: - IO-APIC and APIC chips are programmed for nmi_watchdog support at very early stage of kernel booting and not having nmi_watchdog specified as boot option lead only to nmi_watchdog becomes to NMI_NONE anyway - enable nmi_watchdog thru /proc/sys/kernel/nmi if it was not specified at boot is not possible too (even having this sysfs entry) Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: macro@linux-mips.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: nmi_watchdog - remove useless checkCyrill Gorcunov
Since nmi_watchdog is unsigned variable we may safely remove the check for negative value. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: macro@linux-mips.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: nmi_watchdog - use nmi_watchdog variable for printingCyrill Gorcunov
Since it is possible NMI_ definitions could be changed one day we better print out real nmi_watchdog value instead of constant string. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: macro@linux-mips.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: perfctr-watchdog.c - coding style cleanupCyrill Gorcunov
Just some code beautification. Nothing else. Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com> Cc: macro@linux-mips.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86 boot: more consistently use type int for node idsPaul Jackson
Everywhere I look, node id's are of type 'int', except in this one case, which has 'unsigned long'. Change this one to 'int' as well. There is nothing special about the way this variable 'nid' is used in this routine to justify using an unusual type here. Signed-off-by: Paul Jackson <pj@sgi.com> Cc: "Yinghai Lu" <yhlu.kernel@gmail.com> Cc: "Jack Steiner" <steiner@sgi.com> Cc: "Mike Travis" <travis@sgi.com> Cc: "Huang Cc: Ying" <ying.huang@intel.com> Cc: "Andi Kleen" <andi@firstfloor.org> Cc: "Andrew Morton" <akpm@linux-foundation.org> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86 boot: show pfn addresses in hex not decimal in some kernel info printksPaul Jackson
Page frame numbers (the portion of physical addresses above the low order page offsets) are displayed in several kernel debug and info prints in decimal, not hex. Decimal addresse are unreadable. Use hex. Signed-off-by: Paul Jackson <pj@sgi.com> Cc: "Yinghai Lu" <yhlu.kernel@gmail.com> Cc: "Jack Steiner" <steiner@sgi.com> Cc: "Mike Travis" <travis@sgi.com> Cc: "Huang Cc: Ying" <ying.huang@intel.com> Cc: "Andi Kleen" <andi@firstfloor.org> Cc: "Andrew Morton" <akpm@linux-foundation.org> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86 boot: allow overlapping early reserve memory rangesPaul Jackson
Add support for overlapping early memory reservations. In general, they still can't overlap, and will panic with "Overlapping early reservations" if they do overlap. But if a memory range is reserved with the new call: reserve_early_overlap_ok() rather than with the usual call: reserve_early() then subsequent early reservations are allowed to overlap. This new reserve_early_overlap_ok() call is only used in one place so far, which is the "BIOS reserved" reservation for the the EBDA region, which out of Paranoia reserves more than what the BIOS might have specified, and which thus might overlap with another legitimate early memory reservation (such as, perhaps, the EFI memmap.) Signed-off-by: Paul Jackson <pj@sgi.com> Cc: "Yinghai Lu" <yhlu.kernel@gmail.com> Cc: "Jack Steiner" <steiner@sgi.com> Cc: "Mike Travis" <travis@sgi.com> Cc: "Huang Cc: Ying" <ying.huang@intel.com> Cc: "Andi Kleen" <andi@firstfloor.org> Cc: "Andrew Morton" <akpm@linux-foundation.org> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86 boot: x86_64 efi compiler warning fixPaul Jackson
Fix a compiler warning. Rather than always casting a u32 to a pointer (which generates a warning on x86_64 systems) instead separate the x86_32 and x86_64 assignments entirely with ifdefs. Until other recent changes to this code, it used to have x86_64 separated like this. Signed-off-by: Paul Jackson <pj@sgi.com> Cc: "Yinghai Lu" <yhlu.kernel@gmail.com> Cc: "Jack Steiner" <steiner@sgi.com> Cc: "Mike Travis" <travis@sgi.com> Cc: "Huang Cc: Ying" <ying.huang@intel.com> Cc: "Andi Kleen" <andi@firstfloor.org> Cc: "Andrew Morton" <akpm@linux-foundation.org> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86 boot: e820 code indentation fixPaul Jackson
Fix indentation. An earlier code merge got the indentation of four lines of code off by a tab. Signed-off-by: Paul Jackson <pj@sgi.com> Cc: "Yinghai Lu" <yhlu.kernel@gmail.com> Cc: "Jack Steiner" <steiner@sgi.com> Cc: "Mike Travis" <travis@sgi.com> Cc: "Huang Cc: Ying" <ying.huang@intel.com> Cc: "Andi Kleen" <andi@firstfloor.org> Cc: "Andrew Morton" <akpm@linux-foundation.org> Cc: Paul Jackson <pj@sgi.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: setup_arch 32bit move kvm_guest_init laterYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: setup_arch 32bit move command line copying earlyYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: setup_arch 32bit move efi check laterYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move some func calling from setup_arch to paging_initYinghai Lu
those function depend on paging setup pgtable, so they could access the ram in bootmem region but just get mapped. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: numa32 pfn print out using hex insteadYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: fix compile warning in init_64.cYinghai Lu
len is long and ret is only for NUMA Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: build fixIngo Molnar
fix: arch/x86/kernel/setup_32.c:409: error: 'enable_local_apic' undeclared (first use in this function) arch/x86/kernel/setup_32.c:409: error: (Each undeclared identifier is reported only once arch/x86/kernel/setup_32.c:409: error: for each function it appears in.) Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: clean up min_low_pfnYinghai Lu
for 32bit we already had early_res support, so don't need to track min_low_pfn. keep it to 0 always. also use init_bootmem_node instead of init_bootmem, so don't touch min_low_pfn. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: clean up using max_low_pfn on 32-bitYinghai Lu
so that max_low_pfn is not changed after it is set. so we can move that early and out of initmem_init. could call find_low_pfn_range just after max_pfn is set. also could move reserve_initrd out of setup_bootmem_allocator so 32bit is more like 64bit. Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move reservetop and vmalloc parsing to pgtable_32.cYinghai Lu
also change reserve_top_address to __init attibute Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move find_max_low_pfn to init_32.cYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move boot_params declaring to setup.cYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: introduce reserve_initrdYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: introduce initmem_init for 32 bitYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: introduce initmem_init for 64 bitYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move elfcorehdr parsing to setup.cYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-07-08x86: move reserve_standard_io_resource to setup.cYinghai Lu
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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