diff options
Diffstat (limited to 'arch/arm64/kvm/hyp/switch.c')
-rw-r--r-- | arch/arm64/kvm/hyp/switch.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/arch/arm64/kvm/hyp/switch.c b/arch/arm64/kvm/hyp/switch.c index 945e79c641c4..525c01f48867 100644 --- a/arch/arm64/kvm/hyp/switch.c +++ b/arch/arm64/kvm/hyp/switch.c @@ -48,7 +48,7 @@ static void __hyp_text __activate_traps_vhe(void) val = read_sysreg(cpacr_el1); val |= CPACR_EL1_TTA; - val &= ~CPACR_EL1_FPEN; + val &= ~(CPACR_EL1_FPEN | CPACR_EL1_ZEN); write_sysreg(val, cpacr_el1); write_sysreg(__kvm_hyp_vector, vbar_el1); @@ -59,7 +59,7 @@ static void __hyp_text __activate_traps_nvhe(void) u64 val; val = CPTR_EL2_DEFAULT; - val |= CPTR_EL2_TTA | CPTR_EL2_TFP; + val |= CPTR_EL2_TTA | CPTR_EL2_TFP | CPTR_EL2_TZ; write_sysreg(val, cptr_el2); } @@ -81,11 +81,17 @@ static void __hyp_text __activate_traps(struct kvm_vcpu *vcpu) * it will cause an exception. */ val = vcpu->arch.hcr_el2; + if (!(val & HCR_RW) && system_supports_fpsimd()) { write_sysreg(1 << 30, fpexc32_el2); isb(); } + + if (val & HCR_RW) /* for AArch64 only: */ + val |= HCR_TID3; /* TID3: trap feature register accesses */ + write_sysreg(val, hcr_el2); + /* Trap on AArch32 cp15 c15 accesses (EL1 or EL0) */ write_sysreg(1 << 15, hstr_el2); /* @@ -111,7 +117,7 @@ static void __hyp_text __deactivate_traps_vhe(void) write_sysreg(mdcr_el2, mdcr_el2); write_sysreg(HCR_HOST_VHE_FLAGS, hcr_el2); - write_sysreg(CPACR_EL1_FPEN, cpacr_el1); + write_sysreg(CPACR_EL1_DEFAULT, cpacr_el1); write_sysreg(vectors, vbar_el1); } @@ -298,7 +304,7 @@ int __hyp_text __kvm_vcpu_run(struct kvm_vcpu *vcpu) __activate_vm(vcpu); __vgic_restore_state(vcpu); - __timer_restore_state(vcpu); + __timer_enable_traps(vcpu); /* * We must restore the 32-bit state before the sysregs, thanks @@ -368,7 +374,7 @@ again: __sysreg_save_guest_state(guest_ctxt); __sysreg32_save_state(vcpu); - __timer_save_state(vcpu); + __timer_disable_traps(vcpu); __vgic_save_state(vcpu); __deactivate_traps(vcpu); @@ -436,7 +442,7 @@ void __hyp_text __noreturn __hyp_panic(void) vcpu = (struct kvm_vcpu *)read_sysreg(tpidr_el2); host_ctxt = kern_hyp_va(vcpu->arch.host_cpu_context); - __timer_save_state(vcpu); + __timer_disable_traps(vcpu); __deactivate_traps(vcpu); __deactivate_vm(vcpu); __sysreg_restore_host_state(host_ctxt); |