diff options
| -rw-r--r-- | pkg/sentry/platform/ring0/entry_arm64.s | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/pkg/sentry/platform/ring0/entry_arm64.s b/pkg/sentry/platform/ring0/entry_arm64.s index 6ed73699b..9fd02d628 100644 --- a/pkg/sentry/platform/ring0/entry_arm64.s +++ b/pkg/sentry/platform/ring0/entry_arm64.s @@ -48,6 +48,12 @@ #define SCTLR_EL1_DEFAULT (SCTLR_M | SCTLR_C | SCTLR_I | SCTLR_UCT) +// cntkctl_el1: counter-timer kernel control register el1. +#define CNTKCTL_EL0PCTEN 1 << 0 +#define CNTKCTL_EL0VCTEN 1 << 1 + +#define CNTKCTL_EL1_DEFAULT (CNTKCTL_EL0PCTEN | CNTKCTL_EL0VCTEN) + // Saves a register set. // // This is a macro because it may need to executed in contents where a stack is @@ -509,6 +515,9 @@ TEXT ·Start(SB),NOSPLIT,$0 MOVD $SCTLR_EL1_DEFAULT, R1 MSR R1, SCTLR_EL1 + MOVD $CNTKCTL_EL1_DEFAULT, R1 + MSR R1, CNTKCTL_EL1 + MOVD R8, RSV_REG ORR $0xffff000000000000, RSV_REG, RSV_REG WORD $0xd518d092 //MSR R18, TPIDR_EL1 |