powerpc/64s/exception: Fix 0x1500 interrupt handler crash

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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
9600f261ac ("powerpc/64s/exception: Move KVM test to common code")
just before this bug was introduced.

Fixes: 3f7fbd97d0 ("powerpc/64s/exception: Clean up SRR specifiers")
Reported-by: Paul Menzel <[email protected]>
Signed-off-by: Nicholas Piggin <[email protected]>
Tested-by: Paul Menzel <[email protected]>
[mpe: Split selftest into a separate patch]
Signed-off-by: Michael Ellerman <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

This commit is contained in:

Nicholas Piggin authored and

Michael Ellerman committed 2020-07-08 20:41:06 +10:00

1 parent 19ab500edb

commit 4557ac6b34

1 file changed

+1 -1

									
										arch/powerpc/kernel/exceptions-64s.S
									
		+1
		-1
	
												View File
												
				@@ -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)