diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index 2302bb9e2223..15b0285bfcca 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -98,6 +98,10 @@ #define SET_PSTATE_SSBS(x) __emit_inst(0xd500401f | PSTATE_SSBS | ((!!x) << PSTATE_Imm_shift)) #define SET_PSTATE_TCO(x) __emit_inst(0xd500401f | PSTATE_TCO | ((!!x) << PSTATE_Imm_shift)) +#define set_pstate_pan(x) asm volatile(SET_PSTATE_PAN(x)) +#define set_pstate_uao(x) asm volatile(SET_PSTATE_UAO(x)) +#define set_pstate_ssbs(x) asm volatile(SET_PSTATE_SSBS(x)) + #define __SYS_BARRIER_INSN(CRm, op2, Rt) \ __emit_inst(0xd5000000 | sys_insn(0, 3, 3, (CRm), (op2)) | ((Rt) & 0x1f)) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index cb80ed3f41b7..19312e0489ea 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -1605,7 +1605,7 @@ static void cpu_enable_pan(const struct arm64_cpu_capabilities *__unused) WARN_ON_ONCE(in_interrupt()); sysreg_clear_set(sctlr_el1, SCTLR_EL1_SPAN, 0); - asm(SET_PSTATE_PAN(1)); + set_pstate_pan(1); } #endif /* CONFIG_ARM64_PAN */ diff --git a/arch/arm64/kernel/proton-pack.c b/arch/arm64/kernel/proton-pack.c index fca03648e270..8d774ae70c04 100644 --- a/arch/arm64/kernel/proton-pack.c +++ b/arch/arm64/kernel/proton-pack.c @@ -520,12 +520,12 @@ static enum mitigation_state spectre_v4_enable_hw_mitigation(void) if (spectre_v4_mitigations_off()) { sysreg_clear_set(sctlr_el1, 0, SCTLR_ELx_DSSBS); - asm volatile(SET_PSTATE_SSBS(1)); + set_pstate_ssbs(1); return SPECTRE_VULNERABLE; } /* SCTLR_EL1.DSSBS was initialised to 0 during boot */ - asm volatile(SET_PSTATE_SSBS(0)); + set_pstate_ssbs(0); return SPECTRE_MITIGATED; }