Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] refresh config files
  [IA64] put kdump_find_rsvd_region in __init
  [IA64] Remove sparse warning from unwind code
  [IA64] add missing syscall trace clear
  [IA64] Cleanup in crash.c
  [IA64] kexec: declare ia64_mca_pal_base in mca.h rather than kexec.h
  [IA64] pci_get_legacy_ide_irq should return irq (not GSI)
  [IA64] whitespace fixes for include/asm-ia64/sal.h
  [IA64] Cache error recovery
  [IA64] Proper handling of TLB errors from duplicate itr.d dropins

5 files changed, 53 insertions, 33 deletions

diff --git a/arch/ia64/kernel/crash.c b/arch/ia64/kernel/crash.c
index 5cdd2f5fa064..7d1bbb4403ba 100644
--- a/arch/ia64/kernel/crash.c
+++ b/arch/ia64/kernel/crash.c
@@ -21,9 +21,9 @@
 #include <asm/mca.h>
 
 int kdump_status[NR_CPUS];
-atomic_t kdump_cpu_freezed;
+static atomic_t kdump_cpu_frozen;
 atomic_t kdump_in_progress;
-int kdump_on_init = 1;
+static int kdump_on_init = 1;
 
 static inline Elf64_Word
 *append_elf_note(Elf64_Word *buf, char *name, unsigned type, void *data,
@@ -86,7 +86,7 @@ kdump_wait_cpu_freeze(void)
 	int cpu_num = num_online_cpus() - 1;
 	int timeout = 1000;
 	while(timeout-- > 0) {
-		if (atomic_read(&kdump_cpu_freezed) == cpu_num)
+		if (atomic_read(&kdump_cpu_frozen) == cpu_num)
 			return 0;
 		udelay(1000);
 	}
@@ -108,8 +108,8 @@ machine_crash_shutdown(struct pt_regs *pt)
 	kexec_disable_iosapic();
 #ifdef CONFIG_SMP
 	kdump_smp_send_stop();
+	/* not all cpu response to IPI, send INIT to freeze them */
 	if (kdump_wait_cpu_freeze() && kdump_on_init) 	{
-		//not all cpu response to IPI, send INIT to freeze them
 		kdump_smp_send_init();
 	}
 #endif
@@ -136,7 +136,7 @@ kdump_cpu_freeze(struct unw_frame_info *info, void *arg)
 	cpuid = smp_processor_id();
 	crash_save_this_cpu();
 	current->thread.ksp = (__u64)info->sw - 16;
-	atomic_inc(&kdump_cpu_freezed);
+	atomic_inc(&kdump_cpu_frozen);
 	kdump_status[cpuid] = 1;
 	mb();
 #ifdef CONFIG_HOTPLUG_CPU
diff --git a/arch/ia64/kernel/efi.c b/arch/ia64/kernel/efi.c
index 49b93682c752..f45f91d38cab 100644
--- a/arch/ia64/kernel/efi.c
+++ b/arch/ia64/kernel/efi.c
@@ -1142,7 +1142,7 @@ efi_initialize_iomem_resources(struct resource *code_resource,
 /* find a block of memory aligned to 64M exclude reserved regions
    rsvd_regions are sorted
  */
-unsigned long
+unsigned long __init
 kdump_find_rsvd_region (unsigned long size,
 		struct rsvd_region *r, int n)
 {
diff --git a/arch/ia64/kernel/mca.c b/arch/ia64/kernel/mca.c
index a76add3e76a2..491687f84fb5 100644
--- a/arch/ia64/kernel/mca.c
+++ b/arch/ia64/kernel/mca.c
@@ -1192,8 +1192,6 @@ void
 ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw,
 		 struct ia64_sal_os_state *sos)
 {
-	pal_processor_state_info_t *psp = (pal_processor_state_info_t *)
-		&sos->proc_state_param;
 	int recover, cpu = smp_processor_id();
 	struct task_struct *previous_current;
 	struct ia64_mca_notify_die nd =
@@ -1223,10 +1221,8 @@ ia64_mca_handler(struct pt_regs *regs, struct switch_stack *sw,
 	/* Get the MCA error record and log it */
 	ia64_mca_log_sal_error_record(SAL_INFO_TYPE_MCA);
 
-	/* TLB error is only exist in this SAL error record */
-	recover = (psp->tc && !(psp->cc || psp->bc || psp->rc || psp->uc))
-	/* other error recovery */
-	   || (ia64_mca_ucmc_extension
+	/* MCA error recovery */
+	recover = (ia64_mca_ucmc_extension
 		&& ia64_mca_ucmc_extension(
 			IA64_LOG_CURR_BUFFER(SAL_INFO_TYPE_MCA),
 			sos));
diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c
index afc1403799c9..832cf1e647e8 100644
--- a/arch/ia64/kernel/mca_drv.c
+++ b/arch/ia64/kernel/mca_drv.c
@@ -602,11 +602,40 @@ recover_from_platform_error(slidx_table_t *slidx, peidx_table_t *peidx,
 		default:
 			break;
 		}
+	} else if (psp->cc && !psp->bc) {	/* Cache error */
+		status = recover_from_read_error(slidx, peidx, pbci, sos);
 	}
 
 	return status;
 }
 
+/*
+ * recover_from_tlb_check
+ * @peidx:	pointer of index of processor error section
+ *
+ * Return value:
+ *	1 on Success / 0 on Failure
+ */
+static int
+recover_from_tlb_check(peidx_table_t *peidx)
+{
+	sal_log_mod_error_info_t *smei;
+	pal_tlb_check_info_t *ptci;
+
+	smei = (sal_log_mod_error_info_t *)peidx_tlb_check(peidx, 0);
+	ptci = (pal_tlb_check_info_t *)&(smei->check_info);
+
+	/*
+	 * Look for signature of a duplicate TLB DTC entry, which is
+	 * a SW bug and always fatal.
+	 */
+	if (ptci->op == PAL_TLB_CHECK_OP_PURGE
+	    && !(ptci->itr || ptci->dtc || ptci->itc))
+		return fatal_mca("Duplicate TLB entry");
+
+	return mca_recovered("TLB check recovered");
+}
+
 /**
  * recover_from_processor_error
  * @platform:	whether there are some platform error section or not
@@ -618,13 +647,6 @@ recover_from_platform_error(slidx_table_t *slidx, peidx_table_t *peidx,
  * Return value:
  *	1 on Success / 0 on Failure
  */
-/*
- *  Later we try to recover when below all conditions are satisfied.
- *   1. Only one processor error section is exist.
- *   2. BUS_CHECK is exist and the others are not exist.(Except TLB_CHECK)
- *   3. The entry of BUS_CHECK_INFO is 1.
- *   4. "External bus error" flag is set and the others are not set.
- */
 
 static int
 recover_from_processor_error(int platform, slidx_table_t *slidx,
@@ -652,38 +674,39 @@ recover_from_processor_error(int platform, slidx_table_t *slidx,
 		return fatal_mca("error not contained");
 
 	/*
+	 * Look for recoverable TLB check
+	 */
+	if (psp->tc && !(psp->cc || psp->bc || psp->rc || psp->uc))
+		return recover_from_tlb_check(peidx);
+
+	/*
 	 * The cache check and bus check bits have four possible states
 	 *   cc bc
-	 *    0  0	Weird record, not recovered
-	 *    1  0	Cache error, not recovered
-	 *    0  1	I/O error, attempt recovery
 	 *    1  1	Memory error, attempt recovery
+	 *    1  0	Cache error, attempt recovery
+	 *    0  1	I/O error, attempt recovery
+	 *    0  0	Other error type, not recovered
 	 */
-	if (psp->bc == 0 || pbci == NULL)
-		return fatal_mca("No bus check");
+	if (psp->cc == 0 && (psp->bc == 0 || pbci == NULL))
+		return fatal_mca("No cache or bus check");
 
 	/*
-	 * Sorry, we cannot handle so many.
+	 * Cannot handle more than one bus check.
 	 */
 	if (peidx_bus_check_num(peidx) > 1)
 		return fatal_mca("Too many bus checks");
-	/*
-	 * Well, here is only one bus error.
-	 */
+
 	if (pbci->ib)
 		return fatal_mca("Internal Bus error");
-	if (pbci->cc)
-		return fatal_mca("Cache-cache error");
 	if (pbci->eb && pbci->bsi > 0)
 		return fatal_mca("External bus check fatal status");
 
 	/*
-	 * This is a local MCA and estimated as recoverble external bus error.
-	 * (e.g. a load from poisoned memory)
-	 * This means "there are some platform errors".
+	 * This is a local MCA and estimated as a recoverble error.
 	 */
 	if (platform)
 		return recover_from_platform_error(slidx, peidx, pbci, sos);
+
 	/*
 	 * On account of strange SAL error record, we cannot recover.
 	 */
diff --git a/arch/ia64/kernel/ptrace.c b/arch/ia64/kernel/ptrace.c
index 3f8918782e0c..00f803246948 100644
--- a/arch/ia64/kernel/ptrace.c
+++ b/arch/ia64/kernel/ptrace.c
@@ -1573,6 +1573,7 @@ sys_ptrace (long request, pid_t pid, unsigned long addr, unsigned long data)
 
 	      case PTRACE_DETACH:
 		/* detach a process that was attached. */
+		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
 		ret = ptrace_detach(child, data);
 		goto out_tsk;