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| author |   Christophe Leroy <christophe.leroy@c-s.fr> | 2019-04-30 12:39:04 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-05-03 01:20:27 +1000 |
| commit | 38b4564cf042ad3f5333692687023803c1ab1112 (patch) | |
| tree | 279c93fe38b8535750130bee21a2f0dd19f9bf5f /arch/powerpc/kernel | |
| parent | powerpc/32: implement fast entry for syscalls on BOOKE (diff) | |
| download | linux-dev-38b4564cf042ad3f5333692687023803c1ab1112.tar.xz linux-dev-38b4564cf042ad3f5333692687023803c1ab1112.zip | |
powerpc/32: don't do syscall stuff in transfer_to_handler
As syscalls are now handled via a fast entry path, syscall related
actions can be removed from the generic transfer_to_handler path.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel')
| -rw-r--r-- | arch/powerpc/kernel/entry_32.S | 19 |
1 files changed, 0 insertions, 19 deletions
diff --git a/arch/powerpc/kernel/entry_32.S b/arch/powerpc/kernel/entry_32.S index dc58fec51ed6..e65c3e70c648 100644 --- a/arch/powerpc/kernel/entry_32.S +++ b/arch/powerpc/kernel/entry_32.S @@ -217,7 +217,6 @@ transfer_to_handler_cont: */ tophys(r12, r1) lwz r12,_MSR(r12) - xor r12,r10,r12 andi. r12,r12,MSR_EE bne 1f @@ -258,9 +257,6 @@ reenable_mmu: * the rest is restored from the exception frame. */ - /* Are we enabling or disabling interrupts ? */ - andi. r0,r10,MSR_EE - stwu r1,-32(r1) stw r9,8(r1) stw r11,12(r1) @@ -268,8 +264,6 @@ reenable_mmu: stw r4,20(r1) stw r5,24(r1) - bne- 0f - /* If we are disabling interrupts (normal case), simply log it with * lockdep */ @@ -287,19 +281,6 @@ reenable_mmu: mtctr r11 mtlr r9 bctr /* jump to handler */ - - /* If we are enabling interrupt, this is a syscall. They shouldn't - * happen while interrupts are disabled, so let's do a warning here. - */ -0: trap - EMIT_BUG_ENTRY 0b,__FILE__,__LINE__, BUGFLAG_WARNING - bl trace_hardirqs_on - - /* Now enable for real */ - mfmsr r10 - ori r10,r10,MSR_EE - mtmsr r10 - b 2b #endif /* CONFIG_TRACE_IRQFLAGS */ #if defined (CONFIG_PPC_BOOK3S_32) || defined(CONFIG_E500) |