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| author | Alex Shi <alex.shi@linaro.org> | 2016-10-29 13:26:04 +0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2016-10-29 13:26:04 +0800 |
| commit | c11a255c622e7a2d312f4080c6ef529dd67b3c38 (patch) | |
| tree | c7d36f8014e9da35e4b772cfdc1779ec0449d657 /arch/arm64/kernel/head.S | |
| parent | 273daee0be36235886622396eedb618fc5de0213 (diff) | |
| parent | 25f89e269f5c5d06594098cc3b1d97554249f3f9 (diff) | |
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-android
Diffstat (limited to 'arch/arm64/kernel/head.S')
| -rw-r--r-- | arch/arm64/kernel/head.S | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index 4467bc9c9aa9..c54df6d8d8fe 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -551,8 +551,9 @@ CPU_LE( movk x0, #0x30d0, lsl #16 ) // Clear EE and E0E on LE systems b.lt 4f // Skip if no PMU present mrs x0, pmcr_el0 // Disable debug access traps ubfx x0, x0, #11, #5 // to EL2 and allow access to - msr mdcr_el2, x0 // all PMU counters from EL1 4: + csel x0, xzr, x0, lt // all PMU counters from EL1 + msr mdcr_el2, x0 // (if they exist) /* Stage-2 translation */ msr vttbr_el2, xzr |