Commit 8bf8385b authored Jul 01, 2012 by Benjamin Herrenschmidt

powerpc: Fixup oddity in entry_32.S

When I "fixed" the CONFIG_TRACE_IRQFLAGS case on interrupt entry,
I screwed up a little bit with the test for user space vs. kernel.

The code is fine, there's just some dead code around it. I basically
removed the test and always create the added stack frame whether
coming from user or kernel since in any case we do need to save
a bunch of volatile registers or bad things would happen (we can
take page faults in the kernel for example).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

parent 9778b696

arch/powerpc/kernel/entry_32.S

+0 −6

Original line number	Diff line number	Diff line
		@@ -226,13 +226,7 @@ reenable_mmu: /* re-enable mmu so we can */
		stw r3,16(r1)
		stw r4,20(r1)
		stw r5,24(r1)
		andi. r12,r12,MSR_PR
		b 11f
		bl trace_hardirqs_off
		b 12f
		11:
		bl trace_hardirqs_off
		12:
		lwz r5,24(r1)
		lwz r4,20(r1)
		lwz r3,16(r1)