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(2001-1c00-0c1e-bf00-d69d-5353-dba5-ee81.cable.dynamic.v6.ziggo.nl. [2001:1c00:c1e:bf00:d69d:5353:dba5:ee81]) by smtp.gmail.com with ESMTPSA id t18-20020a1709063e5200b007a62215eb4esm4992460eji.16.2022.11.08.10.16.01 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 08 Nov 2022 10:16:02 -0800 (PST) Message-ID: Date: Tue, 8 Nov 2022 19:16:00 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.3.1 Subject: Re: [PATCH 0/3] Check enumeration before MSR save/restore To: Pawan Gupta , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H. Peter Anvin" , "Rafael J. Wysocki" , Pavel Machek , Andrew Cooper , degoede@redhat.com Cc: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Daniel Sneddon , antonio.gomez.iglesias@linux.intel.com References: Content-Language: en-US, nl From: Hans de Goede In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi All, On 9/13/22 01:38, Pawan Gupta wrote: > Hi, > > This patchset is to fix the "unchecked MSR access error" [1] during S3 > resume. Patch 1/3 adds a feature bit for MSR_IA32_TSX_CTRL. > > Patch 2/3 adds a feature bit for MSR_AMD64_LS_CFG. > > Patch 3/3 adds check for feature bit before adding any speculation > control MSR to the list of MSRs to save/restore. > > [1] https://lore.kernel.org/lkml/20220906201743.436091-1-hdegoede@redhat.com/ > > Pawan Gupta (3): > x86/tsx: Add feature bit for TSX control MSR support > x86/cpu/amd: Add feature bit for MSR_AMD64_LS_CFG enumeration > x86/pm: Add enumeration check before spec MSRs save/restore setup What is the status of this series ? To me this seems like a sensible way to solve the problem which I reported and other similar problems... Regards, Hans