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| author | Marc Zyngier <maz@kernel.org> | 2021-04-13 17:41:08 +0300 |
|---|---|---|
| committer | Marc Zyngier <maz@kernel.org> | 2021-04-13 17:41:08 +0300 |
| commit | bba8857febb1d0574480bd13a1be0567ac0f0ce9 (patch) | |
| tree | ab84931d77aafbbe55c20621fbe3e134aca84afd | |
| parent | 3b7e56be786462423802ff84525b9a12539c5887 (diff) | |
| parent | c8a4b35f5063c256451a3508e9f0b9e6b49debbb (diff) | |
| download | linux-bba8857febb1d0574480bd13a1be0567ac0f0ce9.tar.xz | |
Merge branch 'kvm-arm64/nvhe-wxn' into kvmarm-master/next
Signed-off-by: Marc Zyngier <maz@kernel.org>
| -rw-r--r-- | arch/arm64/include/asm/sysreg.h | 7 | ||||
| -rw-r--r-- | arch/arm64/kernel/cpu-reset.S | 5 | ||||
| -rw-r--r-- | arch/arm64/kvm/hyp/nvhe/hyp-init.S | 12 |
3 files changed, 7 insertions, 17 deletions
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index aafddd74bad7..f6a77f3cc733 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -630,9 +630,6 @@ #define SCTLR_ELx_A (BIT(1)) #define SCTLR_ELx_M (BIT(0)) -#define SCTLR_ELx_FLAGS (SCTLR_ELx_M | SCTLR_ELx_A | SCTLR_ELx_C | \ - SCTLR_ELx_SA | SCTLR_ELx_I | SCTLR_ELx_IESB) - /* SCTLR_EL2 specific flags. */ #define SCTLR_EL2_RES1 ((BIT(4)) | (BIT(5)) | (BIT(11)) | (BIT(16)) | \ (BIT(18)) | (BIT(22)) | (BIT(23)) | (BIT(28)) | \ @@ -644,6 +641,10 @@ #define ENDIAN_SET_EL2 0 #endif +#define INIT_SCTLR_EL2_MMU_ON \ + (SCTLR_ELx_M | SCTLR_ELx_C | SCTLR_ELx_SA | SCTLR_ELx_I | \ + SCTLR_ELx_IESB | SCTLR_ELx_WXN | ENDIAN_SET_EL2 | SCTLR_EL2_RES1) + #define INIT_SCTLR_EL2_MMU_OFF \ (SCTLR_EL2_RES1 | ENDIAN_SET_EL2) diff --git a/arch/arm64/kernel/cpu-reset.S b/arch/arm64/kernel/cpu-reset.S index 37721eb6f9a1..d47ff63a5b66 100644 --- a/arch/arm64/kernel/cpu-reset.S +++ b/arch/arm64/kernel/cpu-reset.S @@ -30,10 +30,7 @@ * flat identity mapping. */ SYM_CODE_START(__cpu_soft_restart) - /* Clear sctlr_el1 flags. */ - mrs x12, sctlr_el1 - mov_q x13, SCTLR_ELx_FLAGS - bic x12, x12, x13 + mov_q x12, INIT_SCTLR_EL1_MMU_OFF pre_disable_mmu_workaround /* * either disable EL1&0 translation regime or disable EL2&0 translation diff --git a/arch/arm64/kvm/hyp/nvhe/hyp-init.S b/arch/arm64/kvm/hyp/nvhe/hyp-init.S index c164045af238..c953fb4b9a13 100644 --- a/arch/arm64/kvm/hyp/nvhe/hyp-init.S +++ b/arch/arm64/kvm/hyp/nvhe/hyp-init.S @@ -122,13 +122,7 @@ alternative_else_nop_endif tlbi vmalls12e1 dsb sy - /* - * Preserve all the RES1 bits while setting the default flags, - * as well as the EE bit on BE. Drop the A flag since the compiler - * is allowed to generate unaligned accesses. - */ - mov_q x0, (SCTLR_EL2_RES1 | (SCTLR_ELx_FLAGS & ~SCTLR_ELx_A)) -CPU_BE( orr x0, x0, #SCTLR_ELx_EE) + mov_q x0, INIT_SCTLR_EL2_MMU_ON alternative_if ARM64_HAS_ADDRESS_AUTH mov_q x1, (SCTLR_ELx_ENIA | SCTLR_ELx_ENIB | \ SCTLR_ELx_ENDA | SCTLR_ELx_ENDB) @@ -226,9 +220,7 @@ SYM_CODE_START(__kvm_handle_stub_hvc) mov x0, xzr reset: /* Reset kvm back to the hyp stub. */ - mrs x5, sctlr_el2 - mov_q x6, SCTLR_ELx_FLAGS - bic x5, x5, x6 // Clear SCTL_M and etc + mov_q x5, INIT_SCTLR_EL2_MMU_OFF pre_disable_mmu_workaround msr sctlr_el2, x5 isb |