diff options
| author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-10-08 08:28:26 -0300 |
|---|---|---|
| committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-10-08 08:28:26 -0300 |
| commit | f19866e5cb04f8f007cb422132ea4611cdacc8e3 (patch) | |
| tree | ee8d9b12a8ec6335ed76b3c58ba0f3e1fea7616e /arch/arm64/kernel/head.S | |
| parent | a700f2d8e79ff80041078f160fe1edccf89b0c66 (diff) | |
Linux-libre 4.2.3-gnupck-4.2.3-gnu
Diffstat (limited to 'arch/arm64/kernel/head.S')
| -rw-r--r-- | arch/arm64/kernel/head.S | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/arm64/kernel/head.S b/arch/arm64/kernel/head.S index c0ff3ce42..370541162 100644 --- a/arch/arm64/kernel/head.S +++ b/arch/arm64/kernel/head.S @@ -528,6 +528,11 @@ CPU_LE( movk x0, #0x30d0, lsl #16 ) // Clear EE and E0E on LE systems msr hstr_el2, xzr // Disable CP15 traps to EL2 #endif + /* EL2 debug */ + 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 + /* Stage-2 translation */ msr vttbr_el2, xzr |