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| author | Otavio Salvador <otavio@ossystems.com.br> | 2018-06-08 10:09:28 -0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2018-06-08 10:09:28 -0300 |
| commit | 5b5a04065fb5487303869fd6080c30f86530005d (patch) | |
| tree | d1442504baf73be22d9e6bc1864206df5ccedfeb /arch/x86/include/asm/mmu.h | |
| parent | 0e674a64b86e2bb00ab43f56104d3ea85dda0066 (diff) | |
| parent | 8d99753ad93af6bcaf798232eeb15e60bdd7e94b (diff) | |
Merge pull request #25 from MaxKrummenacher/4.9-1.0.x-imx-stable-merge
4.9 1.0.x imx stable merge
Diffstat (limited to 'arch/x86/include/asm/mmu.h')
| -rw-r--r-- | arch/x86/include/asm/mmu.h | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h index 8b272a08d1a8..e2e09347ee3c 100644 --- a/arch/x86/include/asm/mmu.h +++ b/arch/x86/include/asm/mmu.h @@ -3,12 +3,18 @@ #include <linux/spinlock.h> #include <linux/mutex.h> +#include <linux/atomic.h> /* - * The x86 doesn't have a mmu context, but - * we put the segment information here. + * x86 has arch-specific MMU state beyond what lives in mm_struct. */ typedef struct { + /* + * ctx_id uniquely identifies this mm_struct. A ctx_id will never + * be reused, and zero is not a valid ctx_id. + */ + u64 ctx_id; + #ifdef CONFIG_MODIFY_LDT_SYSCALL struct ldt_struct *ldt; #endif @@ -33,6 +39,11 @@ typedef struct { #endif } mm_context_t; +#define INIT_MM_CONTEXT(mm) \ + .context = { \ + .ctx_id = 1, \ + } + void leave_mm(int cpu); #endif /* _ASM_X86_MMU_H */ |