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GET /api/patches/2194156/?format=api
{ "id": 2194156, "url": "http://patchwork.ozlabs.org/api/patches/2194156/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260206221908.1451528-3-pierrick.bouvier@linaro.org/", "project": { "id": 14, "url": "http://patchwork.ozlabs.org/api/projects/14/?format=api", "name": "QEMU Development", "link_name": "qemu-devel", "list_id": "qemu-devel.nongnu.org", "list_email": "qemu-devel@nongnu.org", "web_url": "", "scm_url": "", "webscm_url": "", "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260206221908.1451528-3-pierrick.bouvier@linaro.org>", "list_archive_url": null, "date": "2026-02-06T22:19:01", "name": "[v5,2/9] hw/virtio: Introduce VirtIODevice::access_is_big_endian boolean field", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "4eed7cde49b8ffdd77854062a707e65e9500aea2", "submitter": { "id": 85798, "url": "http://patchwork.ozlabs.org/api/people/85798/?format=api", "name": "Pierrick Bouvier", "email": "pierrick.bouvier@linaro.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260206221908.1451528-3-pierrick.bouvier@linaro.org/mbox/", "series": [ { "id": 491346, "url": "http://patchwork.ozlabs.org/api/series/491346/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=491346", "date": "2026-02-06T22:19:02", "name": "single-binary: hw/virtio", "version": 5, "mbox": "http://patchwork.ozlabs.org/series/491346/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2194156/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2194156/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "<qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org>", "X-Original-To": "incoming@patchwork.ozlabs.org", "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=linaro.org header.i=@linaro.org header.a=rsa-sha256\n header.s=google header.b=Trosb645;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; 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Tsirkin\" <mst@redhat.com>,\n Pierrick Bouvier <pierrick.bouvier@linaro.org>, stefanha@redhat.com,\n richard.henderson@linaro.org, qemu-ppc@nongnu.org", "Subject": "[PATCH v5 2/9] hw/virtio: Introduce\n VirtIODevice::access_is_big_endian boolean field", "Date": "Fri, 6 Feb 2026 14:19:01 -0800", "Message-ID": "<20260206221908.1451528-3-pierrick.bouvier@linaro.org>", "X-Mailer": "git-send-email 2.47.3", "In-Reply-To": "<20260206221908.1451528-1-pierrick.bouvier@linaro.org>", "References": "<20260206221908.1451528-1-pierrick.bouvier@linaro.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=2607:f8b0:4864:20::52a;\n envelope-from=pierrick.bouvier@linaro.org; helo=mail-pg1-x52a.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,\n DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1,\n RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no", "X-Spam_action": "no action", "X-BeenThere": "qemu-devel@nongnu.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "qemu development <qemu-devel.nongnu.org>", "List-Unsubscribe": "<https://lists.nongnu.org/mailman/options/qemu-devel>,\n <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>,\n <mailto:qemu-devel-request@nongnu.org?subject=subscribe>", "Errors-To": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org", "Sender": "qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org" }, "content": "From: Philippe Mathieu-Daudé <philmd@linaro.org>\n\nVirtIODevice::access_is_big_endian boolean field, initialized on device\nrealize, and updated when setting device features. This happens on reset\nor when configuring device after initial realize. It represents\nwhether load/store accesses are ordered using big endianness.\n\nSigned-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>\nSigned-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>\n---\n include/hw/virtio/virtio.h | 5 +++++\n hw/virtio/virtio.c | 5 +++++\n 2 files changed, 10 insertions(+)", "diff": "diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h\nindex 65872f2c54c..0f792e24f23 100644\n--- a/include/hw/virtio/virtio.h\n+++ b/include/hw/virtio/virtio.h\n@@ -154,6 +154,11 @@ struct VirtIODevice\n VMChangeStateEntry *vmstate;\n char *bus_name;\n uint8_t device_endian;\n+ /**\n+ * @access_is_big_endian: whether load/store memory accesses are ordered\n+ * using big endianness.\n+ */\n+ bool access_is_big_endian;\n /**\n * @user_guest_notifier_mask: gate usage of ->guest_notifier_mask() callback.\n * This is used to suppress the masking of guest updates for\ndiff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c\nindex 77ca54e5206..a429ff7de39 100644\n--- a/hw/virtio/virtio.c\n+++ b/hw/virtio/virtio.c\n@@ -3154,6 +3154,10 @@ static int virtio_set_features_nocheck(VirtIODevice *vdev, const uint64_t *val)\n }\n \n virtio_features_copy(vdev->guest_features_ex, tmp);\n+ if (!bad) {\n+ /* set_features might enable VIRTIO_F_VERSION_1 */\n+ vdev->access_is_big_endian = virtio_access_is_big_endian(vdev);\n+ }\n return bad ? -1 : 0;\n }\n \n@@ -4075,6 +4079,7 @@ static void virtio_device_realize(DeviceState *dev, Error **errp)\n vdev->listener.commit = virtio_memory_listener_commit;\n vdev->listener.name = \"virtio\";\n memory_listener_register(&vdev->listener, vdev->dma_as);\n+ vdev->access_is_big_endian = virtio_access_is_big_endian(vdev);\n }\n \n static void virtio_device_unrealize(DeviceState *dev)\n", "prefixes": [ "v5", "2/9" ] }