From mboxrd@z Thu Jan 1 00:00:00 1970 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 5D11F215767 for ; Thu, 14 Aug 2025 19:05:35 +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=1755198336; cv=none; b=mzUCY2OUPb8glXPY1q6JWxMacAmq7z17dRqll3xsah9nf8JOla3ruGzNyeJMQkdl+KgnAb5XPgORL56ImbP/Q/vkCaFp2heDJnCv2m+Hmq2O01l5MXDfNCsueoGi8Rbfrt2S5ICkTAkO1VasiPG+2fycbQYT5EwfjFI2w5qYac8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755198336; c=relaxed/simple; bh=3M6olNCkfBgg79SBlkoN6YaHd1iwdF64SMcb1OiDJSA=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=SOWpYwR9nh1fndr8z7R+yS2eUebpnBXqSOsmM2ew0Vck9Fg3GjGTmoOHwd/jcDafyJRmHkwXdOuQzC5QoN3nrsZQl1PRaqFePdObpooKl2eAAJ5gcvD+wR89pZlsBKMwSJ5mYyNQFtazyueATY9pI5BU2qTnshJaNQ86Wp4C6Gk= 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=pkbeQ7oS; 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="pkbeQ7oS" Received: by mail-pj1-f74.google.com with SMTP id 98e67ed59e1d1-32326bed374so1234444a91.2 for ; Thu, 14 Aug 2025 12:05:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1755198335; x=1755803135; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=dZln5AlMLNKwBYNNEImRxFo070vZbrB9DRk7vU6UURM=; b=pkbeQ7oS9mthnHHenj4NxZnz5/5G5IXC/Rz8d1OgHIK4laeLPXJudgzaSjcmAKx1jz oeOxmu8UpiV3jgazOoqgb1ru4Sk7xrEjREPwzUsNLUm6BkQHG5S4EckM3m0B4TWH72W8 l3qsK2SeZmmJLgC9NIJnx9LaT3RFxTwbsdh0B1Jkmj6mqh51h7LjQQrKDvKYNZLP+xjR Ok5cLh+PpkhIzi1a7mILUMRFOdHIgTn08qwThS1C9IFKDFE5ZlSmsxsyyosotZMAd0M2 lCMSKnBGy2fTTR8Ss9Ct9+yEzfz1w6RCtUdRoRXF5f22kuOiWF6fka6z03jBf3wOrjfT OqUg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1755198335; x=1755803135; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=dZln5AlMLNKwBYNNEImRxFo070vZbrB9DRk7vU6UURM=; b=Z7pmx4IXnz7Wes4B6lq1Qa7N7Dsia055R8sK+QnCz0QVwyQO+6r0Dj7wkXlqgPuQTA MGzC0mBKadj7+Xw9m7k/+9U66SHj4zTQECrp4YsfnmOimoqkDxDWBjCX+0K1PqW+/qMK tFbEjb9+A+MzRo9eGQkRU6N95Nk54aeiK/F8FmIrdf7QV+gmeSux9kmkWE2/oZokvsw5 PDyNq3rh3BTmRDWHmqaHxjvu3gib/cV8SrzbcV3WtejA5hlLOqtC2Xc8E2s6maF0VYMw cGuDpaw0CqfJIeb1yrd/OWAZZB/Aw6Mg8ow8fNaYqKTValj8v+h3QiMvh0HI0ENzaafZ 1FQQ== X-Gm-Message-State: AOJu0YzY0lDNTlW2i4593wqQKMgd6M82TJ2idFpwetwfDMuyIuBS+Kuk gusYh77ZhlA5FUu/6tT+VhhOmT67WSHRw+dD/9j4X4bpCe2cg+aXnJkiOopsTpoxC73VMhLEDyt ApgEnHg== X-Google-Smtp-Source: AGHT+IGjcIAuKP6lSEBMEwoStQYCUXAV6FHycDXlwu/XOYDaS7KiPKN4RfAKonpH3DIzNPjDvwQLH8hkouA= X-Received: from pjwx3.prod.google.com ([2002:a17:90a:c2c3:b0:321:6924:af9a]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:380d:b0:313:dcf4:37bc with SMTP id 98e67ed59e1d1-32327aa7b9emr6135916a91.34.1755198334608; Thu, 14 Aug 2025 12:05:34 -0700 (PDT) Date: Thu, 14 Aug 2025 12:05:33 -0700 In-Reply-To: <20250814131146.2093579-3-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <2025081214-bonanza-germproof-173f@gregkh> <20250814131146.2093579-1-sashal@kernel.org> <20250814131146.2093579-3-sashal@kernel.org> Message-ID: Subject: Re: [PATCH 6.6.y 3/3] KVM: VMX: Wrap all accesses to IA32_DEBUGCTL with getter/setter APIs From: Sean Christopherson To: Sasha Levin Cc: stable@vger.kernel.org, Maxim Levitsky , Dapeng Mi Content-Type: text/plain; charset="us-ascii" On Thu, Aug 14, 2025, Sasha Levin wrote: > From: Maxim Levitsky > > [ Upstream commit 7d0cce6cbe71af6e9c1831bff101a2b9c249c4a2 ] > > Introduce vmx_guest_debugctl_{read,write}() to handle all accesses to > vmcs.GUEST_IA32_DEBUGCTL. This will allow stuffing FREEZE_IN_SMM into > GUEST_IA32_DEBUGCTL based on the host setting without bleeding the state > into the guest, and without needing to copy+paste the FREEZE_IN_SMM > logic into every patch that accesses GUEST_IA32_DEBUGCTL. > > No functional change intended. > > Cc: stable@vger.kernel.org > Signed-off-by: Maxim Levitsky > [sean: massage changelog, make inline, use in all prepare_vmcs02() cases] > Reviewed-by: Dapeng Mi > Link: https://lore.kernel.org/r/20250610232010.162191-8-seanjc@google.com > Signed-off-by: Sean Christopherson > Signed-off-by: Sasha Levin > --- Acked-by: Sean Christopherson