diff options
Diffstat (limited to 'kernel/arch/arm64/kernel/head.S')
| -rw-r--r-- | kernel/arch/arm64/kernel/head.S | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/kernel/arch/arm64/kernel/head.S b/kernel/arch/arm64/kernel/head.S index b68525792..20ceb5edf 100644 --- a/kernel/arch/arm64/kernel/head.S +++ b/kernel/arch/arm64/kernel/head.S @@ -518,8 +518,9 @@ 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 |