[PATCH 01/10] 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.tjernl...@transmode.se --- 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 e7dae82..26fb6b9 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 0x4000) /* no translation? */ + _tlbil_va(address, 0, 0, 0); + /* The MPC8xx seems to always set 0x8000, which is * undefined. Of those that can be set, this is the only * one which seems bad. -- 1.6.4.4 ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
[PATCH 01/10] 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.tjernl...@transmode.se --- 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 7699394..071e0ca 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -39,7 +39,7 @@ #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) @@ -243,6 +243,12 @@ 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 0x4000) /* no translation? */ + _tlbil_va(address, 0, 0, 0); + /* The MPC8xx seems to always set 0x8000, which is * undefined. Of those that can be set, this is the only * one which seems bad. -- 1.6.4.4 ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
