diff options
| author |   LEROY Christophe <christophe.leroy@c-s.fr> | 2014-09-19 10:36:10 +0200 |
|---|---|---|
| committer |   Scott Wood <scottwood@freescale.com> | 2014-11-07 18:10:45 -0600 |
| commit | c51a6821bdbc9068adda93b3b8ee65df8e4642a6 (patch) | |
| tree | 0ff47308ec2dbb867a316d3eaf57d2e965041922 /arch/powerpc/mm | |
| parent | powerpc/8xx: Use DAR to save r3 for CPU6 ERRATA (diff) | |
| download | linux-dev-c51a6821bdbc9068adda93b3b8ee65df8e4642a6.tar.xz linux-dev-c51a6821bdbc9068adda93b3b8ee65df8e4642a6.zip | |
powerpc/8xx: Invalidate non present TLB as early as possible
8xx sometimes need to load a invalid/non-present TLBs in
it DTLB asm handler.
These must be invalidated separaly as linux mm doesn't.
Commit 5efab4a02c89c252fb4cce097aafde5f8208dbfe was invalidating them in
arch/powerpc/mm/fault.c.
This patch does the invalidation earlier in order to free the TLB as soon as
possible. This also has the advantage of removing some 8xx specific code from
fault.c
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/fault.c | 7 |
1 files changed, 0 insertions, 7 deletions
diff --git a/arch/powerpc/mm/fault.c b/arch/powerpc/mm/fault.c index 08d659a9fcdb..eb79907f34fa 100644 --- a/arch/powerpc/mm/fault.c +++ b/arch/powerpc/mm/fault.c @@ -43,7 +43,6 @@ #include <asm/tlbflush.h> #include <asm/siginfo.h> #include <asm/debug.h> -#include <mm/mmu_decl.h> #include "icswx.h" @@ -380,12 +379,6 @@ 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. |