diff options
| author | Bin Lu <bin.lu@arm.com> | 2020-09-29 16:02:22 +0800 |
|---|---|---|
| committer | Bin Lu <bin.lu@arm.com> | 2020-09-29 16:02:34 +0800 |
| commit | eefcc478c385c504c2312594bef24806c87f825e (patch) | |
| tree | 46338e21d04ebf087db8d22fc3107329f32498a0 /pkg/sentry/platform/ring0 | |
| parent | ba44298a390c69dcf33ae591b9ddc6b3514cc9b3 (diff) | |
arm64 kvm: remove some redundant codes to improve the preformance
Signed-off-by: Bin Lu <bin.lu@arm.com>
Diffstat (limited to 'pkg/sentry/platform/ring0')
| -rw-r--r-- | pkg/sentry/platform/ring0/entry_arm64.s | 11 |
1 files changed, 1 insertions, 10 deletions
diff --git a/pkg/sentry/platform/ring0/entry_arm64.s b/pkg/sentry/platform/ring0/entry_arm64.s index 5f63cbd45..030e4bb9f 100644 --- a/pkg/sentry/platform/ring0/entry_arm64.s +++ b/pkg/sentry/platform/ring0/entry_arm64.s @@ -296,9 +296,7 @@ LOAD_KERNEL_ADDRESS(CPU_SELF(from), RSV_REG); \ MOVD $CPU_STACK_TOP(RSV_REG), RSV_REG; \ MOVD RSV_REG, RSP; \ - WORD $0xd538d092; \ //MRS TPIDR_EL1, R18 - ISB $15; \ - DSB $15; + WORD $0xd538d092; //MRS TPIDR_EL1, R18 // SWITCH_TO_APP_PAGETABLE sets a new pagetable for a container application. #define SWITCH_TO_APP_PAGETABLE(from) \ @@ -377,8 +375,6 @@ TEXT ·Halt(SB),NOSPLIT,$0 BNE mmio_exit MOVD $0, CPU_REGISTERS+PTRACE_R9(RSV_REG) - // Flush dcache. - WORD $0xd5087e52 // DC CISW mmio_exit: // Disable fpsimd. WORD $0xd5381041 // MRS CPACR_EL1, R1 @@ -396,9 +392,6 @@ mmio_exit: MRS VBAR_EL1, R9 MOVD R0, 0x0(R9) - // Flush dcahce. - WORD $0xd5087e52 // DC CISW - RET // HaltAndResume halts execution and point the pointer to the resume function. @@ -505,8 +498,6 @@ TEXT ·kernelExitToEl1(SB),NOSPLIT,$0 // Start is the CPU entrypoint. TEXT ·Start(SB),NOSPLIT,$0 - // Flush dcache. - WORD $0xd5087e52 // DC CISW // Init. MOVD $SCTLR_EL1_DEFAULT, R1 MSR R1, SCTLR_EL1 |