| Message ID | 20211019075743.2162432-1-xuemingl@nvidia.com |
|---|---|
| Headers | show
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envelope-from=xuemingl@nvidia.com; helo=NAM12-BN8-obe.outbound.protection.outlook.com X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.049, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-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: 2.1.23 Precedence: list List-Id: <qemu-devel.nongnu.org> List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=unsubscribe> List-Archive: <https://lists.nongnu.org/archive/html/qemu-devel> List-Post: <mailto:qemu-devel@nongnu.org> List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help> List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>, <mailto:qemu-devel-request@nongnu.org?subject=subscribe> Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" <qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org> |
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Improve vhost-user VQ notifier unmap
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expand
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When vDPA applicaiton in client mode shutdown, unmapped VQ notifier might being accessed by vCPU thread under high tx traffic, it will crash VM in rare conditon. This patch try to fix it with better RCU sychronization of new flatview. v2: no RCU draining on vCPU thread v3: minor fix on coding style and comments https://lists.nongnu.org/archive/html/qemu-devel/2021-10/msg01764.html v4: fix first patch compilation https://lists.nongnu.org/archive/html/qemu-devel/2021-10/msg04060.html v5: update 2/2 commit message Xueming Li (2): vhost-user: fix VirtQ notifier cleanup vhost-user: remove VirtQ notifier restore hw/virtio/vhost-user.c | 41 +++++++++++++--------------------- include/hw/virtio/vhost-user.h | 1 - 2 files changed, 16 insertions(+), 26 deletions(-)