When getting register values for ENCLS emulation, use kvm_register_read() instead of kvm__read() so that bits 63:32 of the register are dropped if the guest is in 32-bit mode. Note, the misleading/surprising behavior of kvm__read() being "raw" variants under the hood will be addressed once all non-benign bugs are fixed. Fixes: 70210c044b4e ("KVM: VMX: Add SGX ENCLS[ECREATE] handler to enforce CPUID restrictions") Fixes: b6f084ca5538 ("KVM: VMX: Add ENCLS[EINIT] handler to support SGX Launch Control (LC)") Acked-by: Kai Huang Reviewed-by: Binbin Wu Signed-off-by: Sean Christopherson --- arch/x86/kvm/vmx/sgx.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/arch/x86/kvm/vmx/sgx.c b/arch/x86/kvm/vmx/sgx.c index df1d0cf76947..4c61fc33f764 100644 --- a/arch/x86/kvm/vmx/sgx.c +++ b/arch/x86/kvm/vmx/sgx.c @@ -225,8 +225,8 @@ static int handle_encls_ecreate(struct kvm_vcpu *vcpu) struct x86_exception ex; int r; - if (sgx_get_encls_gva(vcpu, kvm_rbx_read(vcpu), 32, 32, &pageinfo_gva) || - sgx_get_encls_gva(vcpu, kvm_rcx_read(vcpu), 4096, 4096, &secs_gva)) + if (sgx_get_encls_gva(vcpu, kvm_register_read(vcpu, VCPU_REGS_RBX), 32, 32, &pageinfo_gva) || + sgx_get_encls_gva(vcpu, kvm_register_read(vcpu, VCPU_REGS_RCX), 4096, 4096, &secs_gva)) return 1; /* @@ -302,9 +302,9 @@ static int handle_encls_einit(struct kvm_vcpu *vcpu) gpa_t sig_gpa, secs_gpa, token_gpa; int ret, trapnr; - if (sgx_get_encls_gva(vcpu, kvm_rbx_read(vcpu), 1808, 4096, &sig_gva) || - sgx_get_encls_gva(vcpu, kvm_rcx_read(vcpu), 4096, 4096, &secs_gva) || - sgx_get_encls_gva(vcpu, kvm_rdx_read(vcpu), 304, 512, &token_gva)) + if (sgx_get_encls_gva(vcpu, kvm_register_read(vcpu, VCPU_REGS_RBX), 1808, 4096, &sig_gva) || + sgx_get_encls_gva(vcpu, kvm_register_read(vcpu, VCPU_REGS_RCX), 4096, 4096, &secs_gva) || + sgx_get_encls_gva(vcpu, kvm_register_read(vcpu, VCPU_REGS_RDX), 304, 512, &token_gva)) return 1; /* -- 2.54.0.823.g6e5bcc1fc9-goog