Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / x86 / mm / fault.c

diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
index a1ce1fa..654be4a 100644 (file)
--- a/arch/x86/mm/fault.c
+++ b/arch/x86/mm/fault.c
@@ -13,12 +13,12 @@
 #include <linux/perf_event.h>          /* perf_sw_event                */
 #include <linux/hugetlb.h>             /* hstate_index_to_shift        */
 #include <linux/prefetch.h>            /* prefetchw                    */
+#include <linux/context_tracking.h>    /* exception_enter(), ...       */
 
 #include <asm/traps.h>                 /* dotraplinkage, ...           */
 #include <asm/pgalloc.h>               /* pgd_*(), ...                 */
 #include <asm/kmemcheck.h>             /* kmemcheck_*(), ...           */
 #include <asm/fixmap.h>                        /* VSYSCALL_START               */
-#include <asm/context_tracking.h>      /* exception_enter(), ...       */
 
 /*
  * Page fault error code bits:
@@ -378,10 +378,12 @@ static noinline __kprobes int vmalloc_fault(unsigned long address)
        if (pgd_none(*pgd_ref))
                return -1;
 
-       if (pgd_none(*pgd))
+       if (pgd_none(*pgd)) {
                set_pgd(pgd, *pgd_ref);
-       else
+               arch_flush_lazy_mmu_mode();
+       } else {
                BUG_ON(pgd_page_vaddr(*pgd) != pgd_page_vaddr(*pgd_ref));
+       }
 
        /*
         * Below here mismatches are bugs because these lower tables
@@ -1222,7 +1224,9 @@ good_area:
 dotraplinkage void __kprobes
 do_page_fault(struct pt_regs *regs, unsigned long error_code)
 {
-       exception_enter(regs);
+       enum ctx_state prev_state;
+
+       prev_state = exception_enter();
        __do_page_fault(regs, error_code);
-       exception_exit(regs);
+       exception_exit(prev_state);
 }