From 38b4564cf042ad3f5333692687023803c1ab1112 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Tue, 30 Apr 2019 12:39:04 +0000 Subject: 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 Signed-off-by: Michael Ellerman --- arch/powerpc/kernel/entry_32.S | 19 ------------------- 1 file changed, 19 deletions(-) (limited to 'arch/powerpc/kernel') 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) -- cgit v1.2.3-59-g8ed1b