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authorRusty Russell <rusty@rustcorp.com.au>2008-12-29 16:32:35 -0500
committerRusty Russell <rusty@rustcorp.com.au>2008-12-29 16:32:35 -0500
commit33edcf133ba93ecba2e4b6472e97b689895d805c (patch)
tree327d7a20acef64005e7c5ccbfa1265be28aeb6ac /arch/powerpc/mm/fault.c
parentbe4d638c1597580ed2294d899d9f1a2cd10e462c (diff)
parent3c92ec8ae91ecf59d88c798301833d7cf83f2179 (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/powerpc/mm/fault.c')
-rw-r--r--arch/powerpc/mm/fault.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c
index 565b7a237c84..91c7b8636b8a 100644
--- a/arch/powerpc/mm/fault.c
+++ b/arch/powerpc/mm/fault.c
@@ -30,6 +30,7 @@
30#include <linux/kprobes.h> 30#include <linux/kprobes.h>
31#include <linux/kdebug.h> 31#include <linux/kdebug.h>
32 32
33#include <asm/firmware.h>
33#include <asm/page.h> 34#include <asm/page.h>
34#include <asm/pgtable.h> 35#include <asm/pgtable.h>
35#include <asm/mmu.h> 36#include <asm/mmu.h>
@@ -283,7 +284,7 @@ good_area:
283 } 284 }
284 pte_update(ptep, 0, _PAGE_HWEXEC | 285 pte_update(ptep, 0, _PAGE_HWEXEC |
285 _PAGE_ACCESSED); 286 _PAGE_ACCESSED);
286 _tlbie(address, mm->context.id); 287 local_flush_tlb_page(vma, address);
287 pte_unmap_unlock(ptep, ptl); 288 pte_unmap_unlock(ptep, ptl);
288 up_read(&mm->mmap_sem); 289 up_read(&mm->mmap_sem);
289 return 0; 290 return 0;
@@ -318,9 +319,16 @@ good_area:
318 goto do_sigbus; 319 goto do_sigbus;
319 BUG(); 320 BUG();
320 } 321 }
321 if (ret & VM_FAULT_MAJOR) 322 if (ret & VM_FAULT_MAJOR) {
322 current->maj_flt++; 323 current->maj_flt++;
323 else 324#ifdef CONFIG_PPC_SMLPAR
325 if (firmware_has_feature(FW_FEATURE_CMO)) {
326 preempt_disable();
327 get_lppaca()->page_ins += (1 << PAGE_FACTOR);
328 preempt_enable();
329 }
330#endif
331 } else
324 current->min_flt++; 332 current->min_flt++;
325 up_read(&mm->mmap_sem); 333 up_read(&mm->mmap_sem);
326 return 0; 334 return 0;
@@ -339,7 +347,7 @@ bad_area_nosemaphore:
339 && printk_ratelimit()) 347 && printk_ratelimit())
340 printk(KERN_CRIT "kernel tried to execute NX-protected" 348 printk(KERN_CRIT "kernel tried to execute NX-protected"
341 " page (%lx) - exploit attempt? (uid: %d)\n", 349 " page (%lx) - exploit attempt? (uid: %d)\n",
342 address, current->uid); 350 address, current_uid());
343 351
344 return SIGSEGV; 352 return SIGSEGV;
345 353