From 06a1ab5292aafaa708491be5939a28feb11e6317 Mon Sep 17 00:00:00 2001 From: Nicholas Piggin Date: Wed, 8 Jul 2020 17:49:42 +1000 Subject: [PATCH] powerpc/64s/exception: Fix 0x1500 interrupt handler crash A typo caused the interrupt handler to branch immediately to the common "unknown interrupt" handler and skip the special case test for denormal cause. This does not affect KVM softpatch handling (e.g., for POWER9 TM assist) because the KVM test was moved to common code by commit a0ffe9a2f0d6 ("powerpc/64s/exception: Move KVM test to common code") just before this bug was introduced. Fixes: 843d18d3a0f3 ("powerpc/64s/exception: Clean up SRR specifiers") Reported-by: Paul Menzel Signed-off-by: Nicholas Piggin Tested-by: Paul Menzel [mpe: Split selftest into a separate patch] Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20200708074942.1713396-1-npiggin@gmail.com --- arch/powerpc/kernel/exceptions-64s.S | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S index fa080694e581e..0fc8bad878b2d 100644 --- a/arch/powerpc/kernel/exceptions-64s.S +++ b/arch/powerpc/kernel/exceptions-64s.S @@ -2551,7 +2551,7 @@ EXC_VIRT_NONE(0x5400, 0x100) INT_DEFINE_BEGIN(denorm_exception) IVEC=0x1500 IHSRR=1 - IBRANCH_COMMON=0 + IBRANCH_TO_COMMON=0 IKVM_REAL=1 INT_DEFINE_END(denorm_exception) -- 2.39.5