Commit 9a7a0773 authored Aug 02, 2019 by Nicholas Piggin Committed by Michael Ellerman Aug 30, 2019

powerpc/64s/exception: Fix performance monitor virt handler

The perf virt handler uses EXCEPTION_PROLOG_2_REAL rather than _VIRT.
In practice this is okay because the _REAL variant is usable by virt
mode interrupts, but should be fixed (and is a performance win).

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190802105709.27696-21-npiggin@gmail.com

parent def0db4f

arch/powerpc/kernel/exceptions-64s.S

+1 −1

Original line number	Diff line number	Diff line
		@@ -750,7 +750,7 @@ END_FTR_SECTION_IFSET(CPU_FTR_CAN_NAP)
		#define __TRAMP_VIRT_OOL_MASKABLE(name, realvec, bitmask) \
		TRAMP_VIRT_BEGIN(tramp_virt_##name); \
		EXCEPTION_PROLOG_1 EXC_STD, PACA_EXGEN, 0, realvec, 0, 0, bitmask ; \
		EXCEPTION_PROLOG_2_REAL name##_common, EXC_STD, 1
		EXCEPTION_PROLOG_2_VIRT name##_common, EXC_STD

		#define EXC_VIRT_OOL_MASKABLE(name, start, size, realvec, bitmask) \
		__EXC_VIRT_OOL_MASKABLE(name, start, size); \