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From: Sean Christopherson <seanjc@google.com>
To: Sean Christopherson <seanjc@google.com>,
	Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
	f734222792@gmail.com,  Vitaly Kuznetsov <vkuznets@redhat.com>,
	Sashiko Bot <sashiko-bot@kernel.org>,
	 Yosry Ahmed <yosry@kernel.org>
Subject: [PATCH v3 08/13] KVM: selftests: Always assert that vmclear() succeeds
Date: Wed, 26 Aug 2026 16:39:14 -0700	[thread overview]
Message-ID: <20260826233919.998904-9-seanjc@google.com> (raw)
In-Reply-To: <20260826233919.998904-1-seanjc@google.com>

Continue removing dead error "handling", and assert that VMCLEAR
succeeds instead of forcing callers of load_vmcs() to assert success.

For all intents and purposes, no functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 tools/testing/selftests/kvm/include/x86/vmx.h | 4 ++--
 tools/testing/selftests/kvm/lib/x86/vmx.c     | 6 ++----
 2 files changed, 4 insertions(+), 6 deletions(-)

diff --git a/tools/testing/selftests/kvm/include/x86/vmx.h b/tools/testing/selftests/kvm/include/x86/vmx.h
index f7ca6646dfbe..cf37a03a93b9 100644
--- a/tools/testing/selftests/kvm/include/x86/vmx.h
+++ b/tools/testing/selftests/kvm/include/x86/vmx.h
@@ -326,7 +326,7 @@ static inline void vmxoff(void)
 	__asm__ __volatile__("vmxoff");
 }
 
-static inline int vmclear(u64 vmcs_pa)
+static inline void vmclear(u64 vmcs_pa)
 {
 	u8 ret;
 
@@ -335,7 +335,7 @@ static inline int vmclear(u64 vmcs_pa)
 		: [pa]"m"(vmcs_pa)
 		: "cc", "memory");
 
-	return ret;
+	__GUEST_ASSERT(!ret, "vmclear [0x%lx] failed\n", vmcs_pa);
 }
 
 static inline int vmptrld(u64 vmcs_pa)
diff --git a/tools/testing/selftests/kvm/lib/x86/vmx.c b/tools/testing/selftests/kvm/lib/x86/vmx.c
index 03d61b1159f8..57a8287de0d2 100644
--- a/tools/testing/selftests/kvm/lib/x86/vmx.c
+++ b/tools/testing/selftests/kvm/lib/x86/vmx.c
@@ -170,16 +170,14 @@ bool load_vmcs(struct vmx_pages *vmx)
 {
 	/* Load a VMCS. */
 	*(u32 *)(vmx->vmcs) = vmcs_revision();
-	if (vmclear(vmx->vmcs_gpa))
-		return false;
+	vmclear(vmx->vmcs_gpa);
 
 	if (vmptrld(vmx->vmcs_gpa))
 		return false;
 
 	/* Setup shadow VMCS, do not load it yet. */
 	*(u32 *)(vmx->shadow_vmcs) = vmcs_revision() | 0x80000000ul;
-	if (vmclear(vmx->shadow_vmcs_gpa))
-		return false;
+	vmclear(vmx->shadow_vmcs_gpa);
 
 	return true;
 }
-- 
2.55.0.887.g758fc8c411-goog


  parent reply	other threads:[~2026-08-26 23:39 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-08-26 23:39 [PATCH v3 00/13] KVM: nVMX: Adjust VMPTRLD/VMPTRST behavior with active eVMCS Sean Christopherson
2026-08-26 23:39 ` [PATCH v3 01/13] KVM: nVMX: Make VMPTRLD result in #UD when eVMCS is used Sean Christopherson
2026-08-26 23:39 ` [PATCH v3 02/13] KVM: nVMX: Make VMPTRST return eVMCS GPA when it " Sean Christopherson
2026-08-26 23:39 ` [PATCH v3 03/13] KVM: selftests: Don't clobber RFLAGS in happy path of __KVM_ASM_SAFE() Sean Christopherson
2026-08-26 23:39 ` [PATCH v3 04/13] KVM: selftests: Adapt to the updated VMPTRST behavior when eVMCS is used Sean Christopherson
2026-08-26 23:39 ` [PATCH v3 05/13] KVM: selftests: Check VMPTRLD with active eVMCS Sean Christopherson
2026-08-26 23:39 ` [PATCH v3 06/13] KVM: selftests: Assert success in vmptrst(), kill off vmptrstz() Sean Christopherson
2026-08-26 23:39 ` [PATCH v3 07/13] KVM: selftests: Always assert that vmxon() and prepare_for_vmx_operation() succeed Sean Christopherson
2026-08-26 23:39 ` Sean Christopherson [this message]
2026-08-26 23:39 ` [PATCH v3 09/13] KVM: selftests: Always assert that vmptrld() succeeds Sean Christopherson
2026-08-26 23:39 ` [PATCH v3 10/13] KVM: selftests: Drop useless return code from load_vmcs() Sean Christopherson
2026-08-26 23:39 ` [PATCH v3 11/13] KVM: selftests: Add macros to handle simple VMX instructions Sean Christopherson
2026-08-26 23:39 ` [PATCH v3 12/13] KVM: selftests: Dedup assembly code for VMLAUNCH and VMRESUME Sean Christopherson
2026-08-27  6:45   ` Yosry Ahmed
2026-08-27 16:40     ` Sean Christopherson
2026-08-27 16:49       ` Yosry Ahmed
2026-08-27 17:17         ` Sean Christopherson
2026-08-27 17:21           ` Yosry Ahmed
2026-08-27 17:33             ` Sean Christopherson
2026-08-27 17:50               ` Yosry Ahmed
2026-08-27 18:07                 ` Sean Christopherson
2026-08-27 18:21                   ` Yosry Ahmed
2026-08-26 23:39 ` [PATCH v3 13/13] KVM: selftests: Add and use double-underscore versions of vmlaunch() and vmresume() Sean Christopherson
2026-08-27  6:51   ` Yosry Ahmed
2026-08-27 20:28     ` Sean Christopherson
2026-08-27 20:37       ` Yosry Ahmed
2026-08-27 20:48         ` Sean Christopherson
2026-08-27 20:56           ` Yosry Ahmed
2026-08-27 21:02             ` Sean Christopherson
2026-08-27 21:05               ` Yosry Ahmed

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