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[88.21.205.47]) by smtp.gmail.com with ESMTPSA id r26sm929143edw.46.2020.03.04.05.29.44 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 04 Mar 2020 05:29:45 -0800 (PST) Subject: Re: [edk2-devel] [PATCH v2 00/16] OvmfPkg: support VCPU hotplug with -D SMM_REQUIRE To: devel@edk2.groups.io, lersek@redhat.com Cc: Ard Biesheuvel , Eric Dong , Hao A Wu , Igor Mammedov , Jian J Wang , Jiewen Yao , Jordan Justen , Michael Kinney , Ray Ni , Boris Ostrovsky References: <20200226221156.29589-1-lersek@redhat.com> <1b3d032c-0a47-e641-bb07-df200a0ca3f0@redhat.com> From: =?UTF-8?B?UGhpbGlwcGUgTWF0aGlldS1EYXVkw6k=?= Message-ID: <5bcd4828-e222-d716-01fe-6689b2eb2328@redhat.com> Date: Wed, 4 Mar 2020 14:29:44 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <1b3d032c-0a47-e641-bb07-df200a0ca3f0@redhat.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit On 3/2/20 8:59 PM, Laszlo Ersek wrote: > On 02/26/20 23:11, Laszlo Ersek wrote: >> Supersedes: <20200223172537.28464-1-lersek@redhat.com> >> Bugzilla: https://bugzilla.tianocore.org/show_bug.cgi?id=1512 >> Repo: https://github.com/lersek/edk2.git >> Branch: vcpu_hotplug_smm_bz_1512_v2 >> >> V1 was posted at: >> >> * [edk2-devel] [PATCH 00/16] >> OvmfPkg: support VCPU hotplug with -D SMM_REQUIRE >> >> https://edk2.groups.io/g/devel/message/54734 >> http://mid.mail-archive.com/20200223172537.28464-1-lersek@redhat.com >> >> New in v2: >> >> - Document (in patch#11) and implement (in patch#12) the "combined" >> approach described here: >> >> http://mid.mail-archive.com/111145fc-be3d-2a9a-a126-c14345a8a8a4@redhat.com >> https://edk2.groups.io/g/devel/message/54754 >> >> The idea is basically to make the SMM Monarch wait not just until the >> hot-added CPU hits the normal RAM Post-SMM Pen (which is safe wrt. >> ordering, but can be attacked by the OS), but *also* until the >> hot-added CPU is just about to execute RSM first (which is a bit less >> safe wrt. ordering, but cannot be attacked by the OS). >> >> - Pick up Ard's conditional A-b for the other patches, which have not >> been modified. >> >> - Rebase to master, and retest. > > Thanks everyone for the feedback! > > I plan to push this series soon after the hard feature freeze ends, and > edk2-stable202002 is tagged. I have three questions / remarks regarding > that: > > - Phil, please tell me if you'd like me to hold the series for longer. > (You seem to have reached the end of the series, and I'm unsure about > the skipped patches -- maybe you want to skip them, maybe you need more > time for them.) I needed more time when this is too x86 specific, which is not my cup of tea. Next time!