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| author | Tony Lindgren <tony@atomide.com> | 2016-01-25 21:46:21 +0300 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2016-01-25 21:46:21 +0300 |
| commit | 7e3b1207705c10ada363bbc7d0235730ce1f5b79 (patch) | |
| tree | cd1eb567acb4e72c1bdfbe8b59746c73b8627ee5 /arch/x86/entry/vdso/vma.c | |
| parent | 143c6fe3a415edf2dde3f507b3a00998b4c4001e (diff) | |
| parent | 20437f79f6627a31752f422688a6047c25cefcf1 (diff) | |
| download | linux-7e3b1207705c10ada363bbc7d0235730ce1f5b79.tar.xz | |
Merge branch 'enable-devices' into omap-for-v4.5/fixes
Diffstat (limited to 'arch/x86/entry/vdso/vma.c')
| -rw-r--r-- | arch/x86/entry/vdso/vma.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/entry/vdso/vma.c b/arch/x86/entry/vdso/vma.c index 64df47148160..b8f69e264ac4 100644 --- a/arch/x86/entry/vdso/vma.c +++ b/arch/x86/entry/vdso/vma.c @@ -12,6 +12,7 @@ #include <linux/random.h> #include <linux/elf.h> #include <linux/cpu.h> +#include <asm/pvclock.h> #include <asm/vgtod.h> #include <asm/proto.h> #include <asm/vdso.h> @@ -100,6 +101,7 @@ static int map_vdso(const struct vdso_image *image, bool calculate_addr) .name = "[vvar]", .pages = no_pages, }; + struct pvclock_vsyscall_time_info *pvti; if (calculate_addr) { addr = vdso_addr(current->mm->start_stack, @@ -169,6 +171,18 @@ static int map_vdso(const struct vdso_image *image, bool calculate_addr) } #endif + pvti = pvclock_pvti_cpu0_va(); + if (pvti && image->sym_pvclock_page) { + ret = remap_pfn_range(vma, + text_start + image->sym_pvclock_page, + __pa(pvti) >> PAGE_SHIFT, + PAGE_SIZE, + PAGE_READONLY); + + if (ret) + goto up_fail; + } + up_fail: if (ret) current->mm->context.vdso = NULL; |