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| author | Arnd Bergmann <arnd.bergmann@de.ibm.com> | 2006-03-24 19:49:27 +0100 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2006-03-27 14:48:44 +1100 |
| commit | 79c227a92ce9fe0504e9c4aaadf3bfacb0f5f45e (patch) | |
| tree | 3e674a8ec79bd170a86e1c5544948d267b381346 /arch/powerpc | |
| parent | 47952d5ea67dc7098667a954483a82acf81eb4da (diff) | |
| download | linux-79c227a92ce9fe0504e9c4aaadf3bfacb0f5f45e.tar.gz linux-79c227a92ce9fe0504e9c4aaadf3bfacb0f5f45e.tar.bz2 linux-79c227a92ce9fe0504e9c4aaadf3bfacb0f5f45e.zip | |
[PATCH] spufs: Fix endless protection fault on LS writes by SPE.
If an SPE attempts a DMA put to a local store after already doing
a get, the kernel must update the HW PTE to allow the write access.
This case was not being handled correctly.
From: Mike Kistler <mkistler@us.ibm.com>
Signed-off-by: Mike Kistler <mkistler@us.ibm.com>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/platforms/cell/spu_base.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/arch/powerpc/platforms/cell/spu_base.c b/arch/powerpc/platforms/cell/spu_base.c index d152a3fbdb83..269dda4fd0b4 100644 --- a/arch/powerpc/platforms/cell/spu_base.c +++ b/arch/powerpc/platforms/cell/spu_base.c @@ -486,14 +486,13 @@ int spu_irq_class_1_bottom(struct spu *spu) ea = spu->dar; dsisr = spu->dsisr; - if (dsisr & MFC_DSISR_PTE_NOT_FOUND) { + if (dsisr & (MFC_DSISR_PTE_NOT_FOUND | MFC_DSISR_ACCESS_DENIED)) { access = (_PAGE_PRESENT | _PAGE_USER); access |= (dsisr & MFC_DSISR_ACCESS_PUT) ? _PAGE_RW : 0UL; if (hash_page(ea, access, 0x300) != 0) error |= CLASS1_ENABLE_STORAGE_FAULT_INTR; } - if ((error & CLASS1_ENABLE_STORAGE_FAULT_INTR) || - (dsisr & MFC_DSISR_ACCESS_DENIED)) { + if (error & CLASS1_ENABLE_STORAGE_FAULT_INTR) { if ((ret = spu_handle_mm_fault(spu)) != 0) error |= CLASS1_ENABLE_STORAGE_FAULT_INTR; else |