diff options
Diffstat (limited to 'arch/ia64/mm')
| -rw-r--r-- | arch/ia64/mm/fault.c | 8 | ||||
| -rw-r--r-- | arch/ia64/mm/tlb.c | 20 |
2 files changed, 21 insertions, 7 deletions
diff --git a/arch/ia64/mm/fault.c b/arch/ia64/mm/fault.c index 7571076a16a1..3e69881648a3 100644 --- a/arch/ia64/mm/fault.c +++ b/arch/ia64/mm/fault.c @@ -16,7 +16,7 @@ #include <asm/system.h> #include <asm/uaccess.h> -extern void die (char *, struct pt_regs *, long); +extern int die(char *, struct pt_regs *, long); #ifdef CONFIG_KPROBES static inline int notify_page_fault(struct pt_regs *regs, int trap) @@ -267,9 +267,11 @@ ia64_do_page_fault (unsigned long address, unsigned long isr, struct pt_regs *re else printk(KERN_ALERT "Unable to handle kernel paging request at " "virtual address %016lx\n", address); - die("Oops", regs, isr); + if (die("Oops", regs, isr)) + regs = NULL; bust_spinlocks(0); - do_exit(SIGKILL); + if (regs) + do_exit(SIGKILL); return; out_of_memory: diff --git a/arch/ia64/mm/tlb.c b/arch/ia64/mm/tlb.c index 1682fc639038..655da240d13c 100644 --- a/arch/ia64/mm/tlb.c +++ b/arch/ia64/mm/tlb.c @@ -10,6 +10,7 @@ * IPI based ptc implementation and A-step IPI implementation. * Rohit Seth <rohit.seth@intel.com> * Ken Chen <kenneth.w.chen@intel.com> + * Christophe de Dinechin <ddd@hp.com>: Avoid ptc.e on memory allocation */ #include <linux/module.h> #include <linux/init.h> @@ -89,9 +90,16 @@ ia64_global_tlb_purge (struct mm_struct *mm, unsigned long start, { static DEFINE_SPINLOCK(ptcg_lock); - if (mm != current->active_mm || !current->mm) { - flush_tlb_all(); - return; + struct mm_struct *active_mm = current->active_mm; + + if (mm != active_mm) { + /* Restore region IDs for mm */ + if (mm && active_mm) { + activate_context(mm); + } else { + flush_tlb_all(); + return; + } } /* HW requires global serialization of ptc.ga. */ @@ -107,6 +115,10 @@ ia64_global_tlb_purge (struct mm_struct *mm, unsigned long start, } while (start < end); } spin_unlock(&ptcg_lock); + + if (mm != active_mm) { + activate_context(active_mm); + } } void @@ -180,7 +192,7 @@ ia64_tlb_init (void) long status; if ((status = ia64_pal_vm_page_size(&tr_pgbits, &purge.mask)) != 0) { - printk(KERN_ERR "PAL_VM_PAGE_SIZE failed with status=%ld;" + printk(KERN_ERR "PAL_VM_PAGE_SIZE failed with status=%ld; " "defaulting to architected purge page-sizes.\n", status); purge.mask = 0x115557000UL; } |