[PATCH v2 3/3] KVM: TDX: Ratelimit the "EPT Violation on pending acceptance page" warning

[Sean Christopherson <seanjc@google.com>]

Ratelimit TDX's kernel logging when a guest accesses an unaccepted page and
has opted to disable EPT Violation #VEs for unaccepted accesses, as the
pr_warn() is trivial for a misbehaving userspace to trigger.

Fixes: e6a85781f783 ("KVM: TDX: Detect unexpected SEPT violations due to pending SPTEs")
Cc: stable@vger.kernel.org
Reported-by: Sashiko Bot <sashiko-bot@kernel.org>
Closes: https://lore.kernel.org/all/20260923164348.2DB2D1F000FF@smtp.kernel.org
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 arch/x86/kvm/vmx/tdx.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kvm/vmx/tdx.c b/arch/x86/kvm/vmx/tdx.c
index e3723f1222fc..4cac43299851 100644
--- a/arch/x86/kvm/vmx/tdx.c
+++ b/arch/x86/kvm/vmx/tdx.c
@@ -1937,8 +1937,8 @@ static int tdx_handle_ept_violation(struct kvm_vcpu *vcpu)
 
 	if (vt_is_tdx_private_gpa(vcpu->kvm, gpa)) {
 		if (tdx_is_sept_violation_unexpected_pending(vcpu)) {
-			pr_warn("Guest access before accepting 0x%llx on vCPU %d\n",
-				gpa, vcpu->vcpu_id);
+			pr_warn_ratelimited("Guest access before accepting 0x%llx on vCPU %d\n",
+					    gpa, vcpu->vcpu_id);
 			kvm_prepare_shutdown_exit(vcpu);
 			return 0;
 		}
-- 
2.56.0.rc1.315.gc6ed9934b7-goog