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| author | Joakim Tjernlund <joakim.tjernlund@transmode.se> | 2009-11-20 00:21:02 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-12-09 17:10:35 +1100 |
| commit | 5efab4a02c89c252fb4cce097aafde5f8208dbfe (patch) | |
| tree | 52816daf92f813f8b53149ff2f177337d313e22d /arch/powerpc/mm | |
| parent | 0285ae37d4366b2d614df0c83cb413cf59ad8944 (diff) | |
| download | linux-5efab4a02c89c252fb4cce097aafde5f8208dbfe.tar.gz linux-5efab4a02c89c252fb4cce097aafde5f8208dbfe.tar.bz2 linux-5efab4a02c89c252fb4cce097aafde5f8208dbfe.zip | |
powerpc/8xx: Invalidate non present TLBs
8xx sometimes need to load a invalid/non-present TLBs in
it DTLB asm handler.
These must be invalidated separaly as linux mm don't.
Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/fault.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index e7dae82c1285..26fb6b990b0a 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -40,7 +40,7 @@ #include <asm/uaccess.h> #include <asm/tlbflush.h> #include <asm/siginfo.h> - +#include <mm/mmu_decl.h> #ifdef CONFIG_KPROBES static inline int notify_page_fault(struct pt_regs *regs) @@ -246,6 +246,12 @@ good_area: goto bad_area; #endif /* CONFIG_6xx */ #if defined(CONFIG_8xx) + /* 8xx sometimes need to load a invalid/non-present TLBs. + * These must be invalidated separately as linux mm don't. + */ + if (error_code & 0x40000000) /* no translation? */ + _tlbil_va(address, 0, 0, 0); + /* The MPC8xx seems to always set 0x80000000, which is * "undefined". Of those that can be set, this is the only * one which seems bad. |