diff options
| -rw-r--r-- | arch/arm64/include/asm/sysreg.h | 4 | ||||
| -rw-r--r-- | arch/arm64/kvm/hyp-init.S | 10 |
2 files changed, 10 insertions, 4 deletions
diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 15c142ce991c..b4d13d9267ff 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -286,6 +286,10 @@ #define SCTLR_ELx_A (1 << 1) #define SCTLR_ELx_M 1 +#define SCTLR_EL2_RES1 ((1 << 4) | (1 << 5) | (1 << 11) | (1 << 16) | \ + (1 << 16) | (1 << 18) | (1 << 22) | (1 << 23) | \ + (1 << 28) | (1 << 29)) + #define SCTLR_ELx_FLAGS (SCTLR_ELx_M | SCTLR_ELx_A | SCTLR_ELx_C | \ SCTLR_ELx_SA | SCTLR_ELx_I) diff --git a/arch/arm64/kvm/hyp-init.S b/arch/arm64/kvm/hyp-init.S index 839425c24b1c..4072d408a4b4 100644 --- a/arch/arm64/kvm/hyp-init.S +++ b/arch/arm64/kvm/hyp-init.S @@ -106,10 +106,12 @@ __do_hyp_init: tlbi alle2 dsb sy - mrs x4, sctlr_el2 - and x4, x4, #SCTLR_ELx_EE // preserve endianness of EL2 - ldr x5, =SCTLR_ELx_FLAGS - orr x4, x4, x5 + /* + * Preserve all the RES1 bits while setting the default flags, + * as well as the EE bit on BE. + */ + ldr x4, =(SCTLR_EL2_RES1 | SCTLR_ELx_FLAGS) +CPU_BE( orr x4, x4, #SCTLR_ELx_EE) msr sctlr_el2, x4 isb |