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AHgh+Rrk5pB0YFrOLhXZKNYi7hRXp2kqQfrYzu9FOCuWH3AYBYew4ozr8rUFrGUluc1suXxt72/5wRdg1gPK@lists.linux.dev X-Gm-Message-State: AOJu0YxOoqsx0lf+WAWC4NJpGsvs8n5ttMqdRoCqkOy09fmL7VJyRpD1 4PiHcDDKsTtLUOZMO1wmw22wLHKTJur6UIKMIPsRFl/s+ssCKtdP5MeskvGZBBAxIbzlucAkrS8 cokSF3Q== X-Received: from pgld13.prod.google.com ([2002:a63:e0d:0:b0:c99:3b68:c9d7]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:7286:b0:3b2:8685:118b with SMTP id adf61e73a8af0-3cc5524622bmr2530914637.20.1786580216761; Wed, 12 Aug 2026 17:16:56 -0700 (PDT) Date: Wed, 12 Aug 2026 17:16:56 -0700 In-Reply-To: <6bb1328d-e995-4ad7-9744-3ab01d2ae591@intel.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260810112200.2326727-1-xiaoyao.li@intel.com> <20260810112200.2326727-3-xiaoyao.li@intel.com> <5dfed336a46329ba39922dcb3a8723116dae9ae4.camel@intel.com> <6bb1328d-e995-4ad7-9744-3ab01d2ae591@intel.com> Message-ID: Subject: Re: [PATCH v2 2/3] KVM: TDX: Fix the exit reason handling From: Sean Christopherson To: Xiaoyao Li Cc: Rick P Edgecombe , "pbonzini@redhat.com" , "kvm@vger.kernel.org" , "linux-coco@lists.linux.dev" , "kas@kernel.org" , "nik.borisov@suse.com" , "linux-kernel@vger.kernel.org" Content-Type: text/plain; charset="us-ascii" On Tue, Aug 11, 2026, Xiaoyao Li wrote: > On 8/11/2026 8:38 AM, Edgecombe, Rick P wrote: > > On Mon, 2026-08-10 at 19:21 +0800, Xiaoyao Li wrote: > > > --- > > > arch/x86/kvm/vmx/tdx.c | 35 ++++++++++++++++++++++------------- > > > 1 file changed, 22 insertions(+), 13 deletions(-) > > > > > > diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c > > > index 7338ac0af693..a89885d550c9 100644 > > > --- a/arch/x86/kvm/vmx/tdx.c > > > +++ b/arch/x86/kvm/vmx/tdx.c > > > @@ -921,10 +921,10 @@ static __always_inline u32 tdcall_to_vmx_exit_reason(struct kvm_vcpu *vcpu) > > > return EXIT_REASON_TDCALL; > > > } > > > -static __always_inline u32 tdx_to_vmx_exit_reason(struct kvm_vcpu *vcpu) > > > +static __always_inline union vmx_exit_reason tdx_to_vmx_exit_reason(struct kvm_vcpu *vcpu) > > > { > > > struct vcpu_tdx *tdx = to_tdx(vcpu); > > > - u32 exit_reason; > > > + union vmx_exit_reason exit_reason; > > > switch (tdx->vp_enter_ret & TDX_SEAMCALL_STATUS_MASK) { > > > case TDX_SUCCESS: > > > @@ -934,23 +934,33 @@ static __always_inline u32 tdx_to_vmx_exit_reason(struct kvm_vcpu *vcpu) > > > case TDX_NON_RECOVERABLE_TD_WRONG_APIC_MODE: > > > break; > > > default: > > > - return -1u; > > > + /* > > > + * Synthesize an invalid bogus Exit Reason, as the TDX-Module > > > > I think this blurb came from Sean, but can we standardize on "TDX module"? The > > code currently uses "TDX module" and "TDX-module" and "TDX-module" used much > > less. I also don't see why it needs the "-". FWIW, I like TDX-Module to clearly identify it as _the_ TDX-Module, versus a potential TDX module provided the kernel, i.e. a tdx.ko module.