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| author |   Christophe Leroy <christophe.leroy@c-s.fr> | 2019-02-21 10:37:59 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-02-22 00:10:16 +1100 |
| commit | 54a05a30c888d1037022661031bbd9195aee90f8 (patch) | |
| tree | d8e00b501ec4ab520a538a0b24960228249ebeb6 /arch/powerpc/kernel/head_32.S | |
| parent | powerpc/603: Don't handle kernel page TLB misses when not need (diff) | |
| download | linux-dev-54a05a30c888d1037022661031bbd9195aee90f8.tar.xz linux-dev-54a05a30c888d1037022661031bbd9195aee90f8.zip | |
powerpc/603: Don't handle _PAGE_RW and _PAGE_DIRTY on ITLB misses
_PAGE_RW and _PAGE_DIRTY do not matter for ITLB misses.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/kernel/head_32.S | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S index e4338d785a94..6db54425f1d9 100644 --- a/arch/powerpc/kernel/head_32.S +++ b/arch/powerpc/kernel/head_32.S @@ -526,13 +526,9 @@ InstructionTLBMiss: */ stw r0,0(r2) /* update PTE (accessed bit) */ /* Convert linux-style PTE to low word of PPC-style PTE */ - rlwinm r1,r0,32-10,31,31 /* _PAGE_RW -> PP lsb */ - rlwinm r2,r0,32-7,31,31 /* _PAGE_DIRTY -> PP lsb */ - and r1,r1,r2 /* writable if _RW and _DIRTY */ rlwimi r0,r0,32-1,30,30 /* _PAGE_USER -> PP msb */ - rlwimi r0,r0,32-1,31,31 /* _PAGE_USER -> PP lsb */ - ori r1,r1,0xe04 /* clear out reserved bits */ - andc r1,r0,r1 /* PP = user? (rw&dirty? 2: 3): 0 */ + ori r1, r1, 0xe05 /* clear out reserved bits */ + andc r1, r0, r1 /* PP = user? 2 : 0 */ BEGIN_FTR_SECTION rlwinm r1,r1,0,~_PAGE_COHERENT /* clear M (coherence not required) */ END_FTR_SECTION_IFCLR(CPU_FTR_NEED_COHERENT) |