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author | Paolo Bonzini <pbonzini@redhat.com> | 2020-08-09 19:58:23 +0300 |
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committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-08-09 19:58:23 +0300 |
commit | 0378daef0c6cf1c2ba525bde0b529f0d4ef5233b (patch) | |
tree | bf170e42b97de0cfee522efbd50cb315520d58b5 /arch/arm64/kvm/reset.c | |
parent | 05487215e6b9732cc4ad0e83e465b33182200ad5 (diff) | |
parent | 16314874b12b451bd5a1df86bcb69745eb487502 (diff) | |
download | linux-0378daef0c6cf1c2ba525bde0b529f0d4ef5233b.tar.xz |
Merge tag 'kvmarm-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into kvm-next-5.6
KVM/arm64 updates for Linux 5.9:
- Split the VHE and nVHE hypervisor code bases, build the EL2 code
separately, allowing for the VHE code to now be built with instrumentation
- Level-based TLB invalidation support
- Restructure of the vcpu register storage to accomodate the NV code
- Pointer Authentication available for guests on nVHE hosts
- Simplification of the system register table parsing
- MMU cleanups and fixes
- A number of post-32bit cleanups and other fixes
Diffstat (limited to 'arch/arm64/kvm/reset.c')
-rw-r--r-- | arch/arm64/kvm/reset.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c index 6ed36be51b4b..ee33875c5c2a 100644 --- a/arch/arm64/kvm/reset.c +++ b/arch/arm64/kvm/reset.c @@ -42,6 +42,11 @@ static u32 kvm_ipa_limit; #define VCPU_RESET_PSTATE_SVC (PSR_AA32_MODE_SVC | PSR_AA32_A_BIT | \ PSR_AA32_I_BIT | PSR_AA32_F_BIT) +static bool system_has_full_ptr_auth(void) +{ + return system_supports_address_auth() && system_supports_generic_auth(); +} + /** * kvm_arch_vm_ioctl_check_extension * @@ -80,8 +85,7 @@ int kvm_arch_vm_ioctl_check_extension(struct kvm *kvm, long ext) break; case KVM_CAP_ARM_PTRAUTH_ADDRESS: case KVM_CAP_ARM_PTRAUTH_GENERIC: - r = has_vhe() && system_supports_address_auth() && - system_supports_generic_auth(); + r = system_has_full_ptr_auth(); break; default: r = 0; @@ -205,19 +209,14 @@ static void kvm_vcpu_reset_sve(struct kvm_vcpu *vcpu) static int kvm_vcpu_enable_ptrauth(struct kvm_vcpu *vcpu) { - /* Support ptrauth only if the system supports these capabilities. */ - if (!has_vhe()) - return -EINVAL; - - if (!system_supports_address_auth() || - !system_supports_generic_auth()) - return -EINVAL; /* * For now make sure that both address/generic pointer authentication - * features are requested by the userspace together. + * features are requested by the userspace together and the system + * supports these capabilities. */ if (!test_bit(KVM_ARM_VCPU_PTRAUTH_ADDRESS, vcpu->arch.features) || - !test_bit(KVM_ARM_VCPU_PTRAUTH_GENERIC, vcpu->arch.features)) + !test_bit(KVM_ARM_VCPU_PTRAUTH_GENERIC, vcpu->arch.features) || + !system_has_full_ptr_auth()) return -EINVAL; vcpu->arch.flags |= KVM_ARM64_GUEST_HAS_PTRAUTH; @@ -292,7 +291,7 @@ int kvm_reset_vcpu(struct kvm_vcpu *vcpu) /* Reset core registers */ memset(vcpu_gp_regs(vcpu), 0, sizeof(*vcpu_gp_regs(vcpu))); - vcpu_gp_regs(vcpu)->regs.pstate = pstate; + vcpu_gp_regs(vcpu)->pstate = pstate; /* Reset system registers */ kvm_reset_sys_regs(vcpu); |