diff options
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kernel/asm-offsets.c | 1 | ||||
| -rw-r--r-- | arch/arm64/kvm/vgic-v3-switch.S | 14 |
2 files changed, 10 insertions, 5 deletions
diff --git a/arch/arm64/kernel/asm-offsets.c b/arch/arm64/kernel/asm-offsets.c index 9a9fce090d58..9d34486985fd 100644 --- a/arch/arm64/kernel/asm-offsets.c +++ b/arch/arm64/kernel/asm-offsets.c @@ -140,6 +140,7 @@ int main(void) DEFINE(VGIC_V2_CPU_ELRSR, offsetof(struct vgic_cpu, vgic_v2.vgic_elrsr)); DEFINE(VGIC_V2_CPU_APR, offsetof(struct vgic_cpu, vgic_v2.vgic_apr)); DEFINE(VGIC_V2_CPU_LR, offsetof(struct vgic_cpu, vgic_v2.vgic_lr)); + DEFINE(VGIC_V3_CPU_SRE, offsetof(struct vgic_cpu, vgic_v3.vgic_sre)); DEFINE(VGIC_V3_CPU_HCR, offsetof(struct vgic_cpu, vgic_v3.vgic_hcr)); DEFINE(VGIC_V3_CPU_VMCR, offsetof(struct vgic_cpu, vgic_v3.vgic_vmcr)); DEFINE(VGIC_V3_CPU_MISR, offsetof(struct vgic_cpu, vgic_v3.vgic_misr)); diff --git a/arch/arm64/kvm/vgic-v3-switch.S b/arch/arm64/kvm/vgic-v3-switch.S index d16046999e06..617a012a0107 100644 --- a/arch/arm64/kvm/vgic-v3-switch.S +++ b/arch/arm64/kvm/vgic-v3-switch.S @@ -148,17 +148,18 @@ * x0: Register pointing to VCPU struct */ .macro restore_vgic_v3_state - // Disable SRE_EL1 access. Necessary, otherwise - // ICH_VMCR_EL2.VFIQEn becomes one, and FIQ happens... - msr_s ICC_SRE_EL1, xzr - isb - // Compute the address of struct vgic_cpu add x3, x0, #VCPU_VGIC_CPU // Restore all interesting registers ldr w4, [x3, #VGIC_V3_CPU_HCR] ldr w5, [x3, #VGIC_V3_CPU_VMCR] + ldr w25, [x3, #VGIC_V3_CPU_SRE] + + msr_s ICC_SRE_EL1, x25 + + // make sure SRE is valid before writing the other registers + isb msr_s ICH_HCR_EL2, x4 msr_s ICH_VMCR_EL2, x5 @@ -244,9 +245,12 @@ dsb sy // Prevent the guest from touching the GIC system registers + // if SRE isn't enabled for GICv3 emulation + cbnz x25, 1f mrs_s x5, ICC_SRE_EL2 and x5, x5, #~ICC_SRE_EL2_ENABLE msr_s ICC_SRE_EL2, x5 +1: .endm ENTRY(__save_vgic_v3_state) |