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| author | Fuad Tabba <tabba@google.com> | 2025-03-14 14:18:30 +0300 |
|---|---|---|
| committer | Oliver Upton <oliver.upton@linux.dev> | 2025-03-15 02:00:49 +0300 |
| commit | 066daa8d3bc2694c392e14091978043aed7b1f23 (patch) | |
| tree | ee3a406274b9596660ebb4fa72619e51ab57d46d | |
| parent | 44f979bf434e9ba1f9040700138825e1ecb69d25 (diff) | |
| download | linux-066daa8d3bc2694c392e14091978043aed7b1f23.tar.xz | |
KVM: arm64: Initialize HCRX_EL2 traps in pKVM
Initialize and set the traps controlled by the HCRX_EL2 in pKVM.
Reviewed-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Fuad Tabba <tabba@google.com>
Link: https://lore.kernel.org/r/20250314111832.4137161-3-tabba@google.com
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
| -rw-r--r-- | arch/arm64/kvm/hyp/nvhe/pkvm.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/arm64/kvm/hyp/nvhe/pkvm.c b/arch/arm64/kvm/hyp/nvhe/pkvm.c index ac85bc51b8d3..c34a6da5fbec 100644 --- a/arch/arm64/kvm/hyp/nvhe/pkvm.c +++ b/arch/arm64/kvm/hyp/nvhe/pkvm.c @@ -166,8 +166,13 @@ static int pkvm_vcpu_init_traps(struct pkvm_hyp_vcpu *hyp_vcpu) pkvm_vcpu_reset_hcr(vcpu); - if ((!pkvm_hyp_vcpu_is_protected(hyp_vcpu))) + if ((!pkvm_hyp_vcpu_is_protected(hyp_vcpu))) { + struct kvm_vcpu *host_vcpu = hyp_vcpu->host_vcpu; + + /* Trust the host for non-protected vcpu features. */ + vcpu->arch.hcrx_el2 = host_vcpu->arch.hcrx_el2; return 0; + } ret = pkvm_check_pvm_cpu_features(vcpu); if (ret) @@ -175,6 +180,7 @@ static int pkvm_vcpu_init_traps(struct pkvm_hyp_vcpu *hyp_vcpu) pvm_init_traps_hcr(vcpu); pvm_init_traps_mdcr(vcpu); + vcpu_set_hcrx(vcpu); return 0; } |