From nobody Sun Apr 5 13:12:58 2026 Received: from mail-pj1-f74.google.com (mail-pj1-f74.google.com [209.85.216.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DB56433A9EA for ; Wed, 18 Feb 2026 23:10:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.74 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771456204; cv=none; b=idR+/Lxi+A+IjvNsyLynY9COxPXOD08hYXln4Px4lMixs+8cFD3VBTIeTbcl/VX4vyrQ7g0+pDBTC4kl0nYNsniyX/V7KZ3wZm1jT0PEvEO5Yhz3nY8xJpkPLXesxv3P/VklLb+iMZNFv1vHg487ERpG78zte2ZwJbzbyVTcz3w= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771456204; c=relaxed/simple; bh=u8MGwEnZw80aUxcAFAsNwbLOYPY2LFnMw6ire5CTzNA=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=SGHbf5QyAwkmTYxAyJT3xFRCs2gOtdYXQuvDVLTplhamrckXfKM3hdzgU4MboHmLC55EzidqvWtjfD/zeEHp2PohUBErllJv2OoILRykdVBBTFyUk8x02Q/gDc/q5/TpOU5DXgC7WZISAfVJwD5EEwHLmxUM/W14uoERpTDaZAY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=rr+bWUra; arc=none smtp.client-ip=209.85.216.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="rr+bWUra" Received: by mail-pj1-f74.google.com with SMTP id 98e67ed59e1d1-354c7febaefso1171810a91.3 for ; Wed, 18 Feb 2026 15:10:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1771456203; x=1772061003; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:from:to:cc:subject:date:message-id:reply-to; bh=8f/RMBwrSD0PDWAtnxpBhLzUqfwgiAT8TNGlxIco9LY=; b=rr+bWUraDkb2cB43XvV6POEJeOr/hP+qQ09HH4jwCS/0T1LagsDFwZ7zV3RTl+PrHp xKvLrDyfIgvYaIuu5e1JJKaKGm7wThy4nAdrCfEeOD3K23G0TEMkiD0Pnk7I2jgtcq0h xc+gcG4Hi16uupYovdnwO9X7txYjXVbH0oA5B/LmAJsu0RrXwFefONZB7C7Njz0XfhZs Hiq0s5AXMAqLB+HdUHRJUl5kOCwTtFopPbIY4s8iVeAndyMe2FmyDmlim8yYEQdZLp3J AieqGlrLnelEtsmrLPA3IBE8MXZQsCbv0NLbD7KBzHxvgPsAtPyW8NRjpuKmxvXMQFS1 mx8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1771456203; x=1772061003; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:reply-to:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=8f/RMBwrSD0PDWAtnxpBhLzUqfwgiAT8TNGlxIco9LY=; b=K+5hI42CdCZiZk0lviEdr+Qfe4KPttRXBZIXmyVg4vpiTbNH0pHw52UU5pKJVZGLWM FHdFMvXJBnbGHtMeNGnBjzm7JBFu2Uuh6W1sxTiNc7/5ScWPeFKmZxFOKuNKxgXIAJxh mx0pvZNnsYeerau9U2rRrdFFpS3ybCk+wqW6z4DpvKAe6IRY3mzrVxtPwPRq8U6yCh5H w1h9Eu+c4M/9f2E3C0BrQLz08ZD1jYGY6JJFeu3e6Wgw13pxqG2NCnUOT4iyFMu9C6JY 9V9avqNyS0k5yRjwZ2bieVF8YWnI0k8k//GqXiCC+0+8NoZQ9NG9vgzo/XJGiT8t3P0u ZJSg== X-Forwarded-Encrypted: i=1; AJvYcCV4qfxSi+vlONeyPLmXx3ZHNTJp/UPmULMsogB0eiNxwgbb7XVm74bAKWkHiWGqnBIjUAR98pk9bAXX8N0=@vger.kernel.org X-Gm-Message-State: AOJu0YzmIT5eaDSh0as2dUdAbIvYs6lesunWNGXKKTVlvpV/nyCG5tJ3 hZdpwNp44dycsEYWlJ71tKu5Vs+j5Eq1vVh1r3gor5OtLw3oAmCTt5IyJl3C3pNSVv2hG0Mt8YZ zo/F++g== X-Received: from pjbkb11.prod.google.com ([2002:a17:90a:e7cb:b0:352:d931:fa5b]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:6c8:b0:341:8c8b:b8e6 with SMTP id 98e67ed59e1d1-358890eaf88mr2943575a91.16.1771456203178; Wed, 18 Feb 2026 15:10:03 -0800 (PST) Reply-To: Sean Christopherson Date: Wed, 18 Feb 2026 15:09:51 -0800 In-Reply-To: <20260218230958.2877682-1-seanjc@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260218230958.2877682-1-seanjc@google.com> X-Mailer: git-send-email 2.53.0.345.g96ddfc5eaa-goog Message-ID: <20260218230958.2877682-2-seanjc@google.com> Subject: [PATCH v2 1/8] KVM: SVM: Explicitly mark vmcb01 dirty after modifying VMCB intercepts From: Sean Christopherson To: Sean Christopherson , Paolo Bonzini Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Yosry Ahmed Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" When reacting to an intercept update, explicitly mark vmcb01's intercepts dirty, as KVM always initially operates on vmcb01, and nested_svm_vmexit() isn't guaranteed to mark VMCB_INTERCEPTS as dirty. I.e. if L2 is active, KVM will modify the intercepts for L1, but might not mark them as dirty before the next VMRUN of L1. Fixes: 116a0a23676e ("KVM: SVM: Add clean-bit for intercetps, tsc-offset an= d pause filter count") Cc: stable@vger.kernel.org Signed-off-by: Sean Christopherson Reviewed-by: Yosry Ahmed --- arch/x86/kvm/svm/nested.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c index de90b104a0dd..66701106a51b 100644 --- a/arch/x86/kvm/svm/nested.c +++ b/arch/x86/kvm/svm/nested.c @@ -128,11 +128,13 @@ void recalc_intercepts(struct vcpu_svm *svm) struct vmcb_ctrl_area_cached *g; unsigned int i; =20 - vmcb_mark_dirty(svm->vmcb, VMCB_INTERCEPTS); + vmcb_mark_dirty(svm->vmcb01.ptr, VMCB_INTERCEPTS); =20 if (!is_guest_mode(&svm->vcpu)) return; =20 + vmcb_mark_dirty(svm->vmcb, VMCB_INTERCEPTS); + c =3D &svm->vmcb->control; h =3D &svm->vmcb01.ptr->control; g =3D &svm->nested.ctl; --=20 2.53.0.345.g96ddfc5eaa-goog