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-rw-r--r--arch/powerpc/kernel/pmc.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/kernel/pmc.c b/arch/powerpc/kernel/pmc.c
index 2d333cc84082..e6fb194fe537 100644
--- a/arch/powerpc/kernel/pmc.c
+++ b/arch/powerpc/kernel/pmc.c
@@ -43,8 +43,13 @@ static void dummy_perf(struct pt_regs *regs)
mtspr(SPRN_MMCR0, mmcr0);
}
#else
+/* Ensure exceptions are disabled */
static void dummy_perf(struct pt_regs *regs)
{
+ unsigned int mmcr0 = mfspr(SPRN_MMCR0);
+
+ mmcr0 &= ~(MMCR0_PMXE);
+ mtspr(SPRN_MMCR0, mmcr0);
}
#endif
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