Commit 22b89ba1 authored by Sandipan Das's avatar Sandipan Das Committed by Michael Ellerman
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powerpc/sstep: Fix darn emulation 



Commit 8813ff49 ("powerpc/sstep: Check instruction validity
against ISA version before emulation") introduced a proper way to skip
unknown instructions. This makes sure that the same is used for the
darn instruction when the range selection bits have a reserved value.

Fixes: a23987ef ("powerpc: sstep: Add support for darn instruction")
Signed-off-by: default avatarSandipan Das <sandipan@linux.ibm.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20210204080744.135785-2-sandipan@linux.ibm.com
parent bbda4b6c

arch/powerpc/lib/sstep.c

+1 −1
Original line number Diff line number Diff line
@@ -1916,7 +1916,7 @@ int analyse_instr(struct instruction_op *op, const struct pt_regs *regs, 
				goto compute_done;

			}



			return -1;

			goto unknown_opcode;

#ifdef __powerpc64__

		case 777:	/* modsd */

			if (!cpu_has_feature(CPU_FTR_ARCH_300))