shinys000114/linux
1
0
Fork 0
mirror of https://github.com/hardkernel/linux.git synced 2026-06-07 03:15:31 +09:00
Code Issues Packages Projects Releases Wiki Activity

ANDROID: KVM: arm64: refactor kvm_vcpu_enable_ptrauth() for hyp use

Browse Source 
Move kvm_vcpu_enable_ptrauth() to a shared header to be used by
hyp in protected mode.

No functional change intended.

Signed-off-by: Fuad Tabba <tabba@google.com>
Bug: 209580772
Change-Id: I9457bb7a16e807b6c59b4b3e121b6f4715a12cab
Signed-off-by: Will Deacon <willdeacon@google.com>
This commit is contained in:
Fuad Tabba
2021-11-03 17:13:37 +00:00
committed by Will Deacon
parent 36a84952bc
commit 9a893ced59
2 changed files with 17 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
arch/arm64/include/asm/kvm_emulate.h
View File

@@ -41,6 +41,22 @@ void kvm_inject_vabt(struct kvm_vcpu *vcpu);
void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr);
void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr);
static inline int kvm_vcpu_enable_ptrauth(struct kvm_vcpu *vcpu)
{
/*
* For now make sure that both address/generic pointer authentication
* 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) ||
!system_has_full_ptr_auth())
return -EINVAL;
vcpu->arch.flags |= KVM_ARM64_GUEST_HAS_PTRAUTH;
return 0;
}
static __always_inline bool vcpu_el1_is_32bit(struct kvm_vcpu *vcpu)
{
return !(vcpu->arch.hcr_el2 & HCR_RW);

18
arch/arm64/kvm/reset.c
View File

@@ -109,7 +109,7 @@ static int kvm_vcpu_finalize_sve(struct kvm_vcpu *vcpu)
kfree(buf);
return ret;
}
vcpu->arch.sve_state = buf;
vcpu->arch.flags |= KVM_ARM64_VCPU_SVE_FINALIZED;
return 0;
@@ -156,22 +156,6 @@ static void kvm_vcpu_reset_sve(struct kvm_vcpu *vcpu)
memset(vcpu->arch.sve_state, 0, vcpu_sve_state_size(vcpu));
}
static int kvm_vcpu_enable_ptrauth(struct kvm_vcpu *vcpu)
{
/*
* For now make sure that both address/generic pointer authentication
* 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) ||
!system_has_full_ptr_auth())
return -EINVAL;
vcpu->arch.flags |= KVM_ARM64_GUEST_HAS_PTRAUTH;
return 0;
}
static bool vcpu_allowed_register_width(struct kvm_vcpu *vcpu)
{
struct kvm_vcpu *tmp;