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[54.240.197.238]) by smtp.gmail.com with ESMTPSA id c2-20020a5d63c2000000b002c8ed82c56csm13295109wrw.116.2023.03.07.08.29.02 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 07 Mar 2023 08:29:03 -0800 (PST) From: Paul Durrant X-Google-Original-From: Paul Durrant Message-ID: <8354e562-bbe5-d239-27a8-ed26bf537d5a@xen.org> Date: Tue, 7 Mar 2023 16:29:01 +0000 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:102.0) Gecko/20100101 Thunderbird/102.8.0 Subject: Re: [RFC PATCH v1 24/25] hw/xen: Implement soft reset for emulated gnttab Content-Language: en-US To: David Woodhouse , qemu-devel@nongnu.org Cc: Paolo Bonzini , Joao Martins , Ankur Arora , Stefano Stabellini , vikram.garhwal@amd.com, Anthony Perard , xen-devel@lists.xenproject.org References: <20230302153435.1170111-1-dwmw2@infradead.org> <20230302153435.1170111-25-dwmw2@infradead.org> Organization: Xen Project In-Reply-To: <20230302153435.1170111-25-dwmw2@infradead.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=2a00:1450:4864:20::42d; envelope-from=xadimgnik@gmail.com; helo=mail-wr1-x42d.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, NICE_REPLY_A=-0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: paul@xen.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org On 02/03/2023 15:34, David Woodhouse wrote: > From: David Woodhouse > > This is only part of it; we will also need to get the PV back end drivers > to tear down their own mappings (or do it for them, but they kind of need > to stop using the pointers too). > > Some more work on the actual PV back ends and xen-bus code is going to be > needed to really make soft reset and migration fully functional, and this > part is the basis for that. > > Signed-off-by: David Woodhouse > --- > hw/i386/kvm/xen_gnttab.c | 26 ++++++++++++++++++++++++-- > hw/i386/kvm/xen_gnttab.h | 1 + > target/i386/kvm/xen-emu.c | 5 +++++ > 3 files changed, 30 insertions(+), 2 deletions(-) > Reviewed-by: Paul Durrant