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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-07-23 23:15:47 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-08-20 10:25:09 +1000 |
| commit | 25d21ad6e799cccd097b9df2a2fefe19a7e1dfcf (patch) | |
| tree | cd381527a069fed6cffa8755cac177639cc48b0b /arch/powerpc/include/asm/mmu_context.h | |
| parent | a8f7758c1c52a13e031266483efd5525157e43e9 (diff) | |
| download | lwn-25d21ad6e799cccd097b9df2a2fefe19a7e1dfcf.tar.gz lwn-25d21ad6e799cccd097b9df2a2fefe19a7e1dfcf.zip | |
powerpc: Add TLB management code for 64-bit Book3E
This adds the TLB miss handler assembly, the low level TLB flush routines
along with the necessary hook for dealing with our virtual page tables
or indirect TLB entries that need to be flushes when PTE pages are freed.
There is currently no support for hugetlbfs
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/include/asm/mmu_context.h')
| -rw-r--r-- | arch/powerpc/include/asm/mmu_context.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/mmu_context.h b/arch/powerpc/include/asm/mmu_context.h index 8dffed317013..b34e94d94435 100644 --- a/arch/powerpc/include/asm/mmu_context.h +++ b/arch/powerpc/include/asm/mmu_context.h @@ -43,6 +43,10 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, tsk->thread.pgdir = next->pgd; #endif /* CONFIG_PPC32 */ + /* 64-bit Book3E keeps track of current PGD in the PACA */ +#ifdef CONFIG_PPC_BOOK3E_64 + get_paca()->pgd = next->pgd; +#endif /* Nothing else to do if we aren't actually switching */ if (prev == next) return; @@ -89,6 +93,10 @@ static inline void activate_mm(struct mm_struct *prev, struct mm_struct *next) static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) { + /* 64-bit Book3E keeps track of current PGD in the PACA */ +#ifdef CONFIG_PPC_BOOK3E_64 + get_paca()->pgd = NULL; +#endif } #endif /* __KERNEL__ */ |