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,
Mingwei Zhang <mizhang@google.com>,
David Matlack <dmatlack@google.com>,
Jim Mattson <jmattson@google.com>
Subject: [PATCH v3 10/12] KVM: x86/mmu: Use BUILD_BUG_ON_INVALID() for KVM_MMU_WARN_ON() stub
Date: Fri, 28 Jul 2023 17:47:20 -0700 [thread overview]
Message-ID: <20230729004722.1056172-11-seanjc@google.com> (raw)
In-Reply-To: <20230729004722.1056172-1-seanjc@google.com>
Use BUILD_BUG_ON_INVALID() instead of an empty do-while loop to stub out
KVM_MMU_WARN_ON() when CONFIG_KVM_PROVE_MMU=n, that way _some_ build
issues with the usage of KVM_MMU_WARN_ON() will be dected even if the
kernel is using the stubs, e.g. basic syntax errors will be detected.
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
arch/x86/kvm/mmu/mmu_internal.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/mmu/mmu_internal.h b/arch/x86/kvm/mmu/mmu_internal.h
index 40e74db6a7d5..f1ef670058e5 100644
--- a/arch/x86/kvm/mmu/mmu_internal.h
+++ b/arch/x86/kvm/mmu/mmu_internal.h
@@ -9,7 +9,7 @@
#ifdef CONFIG_KVM_PROVE_MMU
#define KVM_MMU_WARN_ON(x) WARN_ON_ONCE(x)
#else
-#define KVM_MMU_WARN_ON(x) do { } while (0)
+#define KVM_MMU_WARN_ON(x) BUILD_BUG_ON_INVALID(x)
#endif
/* Page table builder macros common to shadow (host) PTEs and guest PTEs. */
--
2.41.0.487.g6d72f3e995-goog
next prev parent reply other threads:[~2023-07-29 0:49 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-29 0:47 [PATCH v3 00/12] KVM: x86/mmu: Clean up MMU_DEBUG and BUG/WARN usage Sean Christopherson
2023-07-29 0:47 ` [PATCH v3 01/12] KVM: x86/mmu: Delete pgprintk() and all its usage Sean Christopherson
2023-07-29 0:47 ` [PATCH v3 02/12] KVM: x86/mmu: Delete rmap_printk() " Sean Christopherson
2023-07-29 0:47 ` [PATCH v3 03/12] KVM: x86/mmu: Delete the "dbg" module param Sean Christopherson
2023-07-29 0:47 ` [PATCH v3 04/12] KVM: x86/mmu: Avoid pointer arithmetic when iterating over SPTEs Sean Christopherson
2023-08-01 14:06 ` Philippe Mathieu-Daudé
2023-07-29 0:47 ` [PATCH v3 05/12] KVM: x86/mmu: Cleanup sanity check of SPTEs at SP free Sean Christopherson
2023-07-29 0:47 ` [PATCH v3 06/12] KVM: x86/mmu: Rename MMU_WARN_ON() to KVM_MMU_WARN_ON() Sean Christopherson
2023-08-01 14:02 ` Philippe Mathieu-Daudé
2023-07-29 0:47 ` [PATCH v3 07/12] KVM: x86/mmu: Convert "runtime" WARN_ON() assertions to WARN_ON_ONCE() Sean Christopherson
2023-07-29 0:47 ` [PATCH v3 08/12] KVM: x86/mmu: Bug the VM if a vCPU ends up in long mode without PAE enabled Sean Christopherson
2023-07-29 0:47 ` [PATCH v3 09/12] KVM: x86/mmu: Replace MMU_DEBUG with proper KVM_PROVE_MMU Kconfig Sean Christopherson
2023-08-01 14:02 ` Philippe Mathieu-Daudé
2023-07-29 0:47 ` Sean Christopherson [this message]
2023-08-01 14:04 ` [PATCH v3 10/12] KVM: x86/mmu: Use BUILD_BUG_ON_INVALID() for KVM_MMU_WARN_ON() stub Philippe Mathieu-Daudé
2023-08-01 23:41 ` Sean Christopherson
2023-08-02 6:49 ` Philippe Mathieu-Daudé
2023-07-29 0:47 ` [PATCH v3 11/12] KVM: x86/mmu: Plumb "struct kvm" all the way to pte_list_remove() Sean Christopherson
2023-07-29 0:47 ` [PATCH v3 12/12] KVM: x86/mmu: BUG() in rmap helpers iff CONFIG_BUG_ON_DATA_CORRUPTION=y Sean Christopherson
2023-08-04 0:41 ` [PATCH v3 00/12] KVM: x86/mmu: Clean up MMU_DEBUG and BUG/WARN usage Sean Christopherson
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