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powerpc/64/sstep: Ifdef the deprecated fast endian switch syscall

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Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200225173541.1549955-25-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin 2020-02-26 03:35:33 +10:00 committed by Michael Ellerman
parent 965dd3ad30
commit f14f8a2032
1 changed files with 3 additions and 2 deletions
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5
arch/powerpc/lib/sstep.c
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@ -3179,8 +3179,9 @@ int emulate_step(struct pt_regs *regs, unsigned int instr)
* entry code works. If that is changed, this will
* need to be changed also.
*/
if (regs->gpr[0] == 0x1ebe &&
cpu_has_feature(CPU_FTR_REAL_LE)) {
if (IS_ENABLED(CONFIG_PPC_FAST_ENDIAN_SWITCH) &&
cpu_has_feature(CPU_FTR_REAL_LE) &&
regs->gpr[0] == 0x1ebe) {
regs->msr ^= MSR_LE;
goto instr_done;
}