Messages in this thread Patch in this message | | | From | Christophe Leroy <> | Subject | [PATCH v4 08/21] powerpc/8xx: No need to restore registers and save them again. | Date | Fri, 19 Sep 2014 10:36:08 +0200 (CEST) |
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In DTLBError handler there is not need to restore r10, r11 and cr registers after fixing DAR as they are saved again to the same place just after.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
--- Changes in v2: - None
Changes in v3: - None
Changes in v4: - None
arch/powerpc/kernel/head_8xx.S | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 5f04d5f..e5a250c 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -478,8 +478,8 @@ DataTLBError: cmpwi cr0, r11, 0x00f0 beq- FixupDAR /* must be a buggy dcbX, icbi insn. */ DARFixed:/* Return from dcbx instruction bug workaround */ - EXCEPTION_EPILOG_0 - EXCEPTION_PROLOG + EXCEPTION_PROLOG_1 + EXCEPTION_PROLOG_2 mfspr r10,SPRN_DSISR stw r10,_DSISR(r11) mr r5,r10 -- 1.7.1
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