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GET /api/patches/2196409/?format=api
{ "id": 2196409, "url": "http://patchwork.ozlabs.org/api/patches/2196409/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260213182713.44924-3-philmd@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": "<20260213182713.44924-3-philmd@linaro.org>", "list_archive_url": null, "date": "2026-02-13T18:27:10", "name": "[2/5] page-vary: Expose TARGET_PAGE_BITS_MIN definition", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "ec31caa74fb600fb8ae208ee7703378aec6b9cfd", "submitter": { "id": 85046, "url": "http://patchwork.ozlabs.org/api/people/85046/?format=api", "name": "Philippe Mathieu-Daudé", "email": "philmd@linaro.org" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/qemu-devel/patch/20260213182713.44924-3-philmd@linaro.org/mbox/", "series": [ { "id": 492130, "url": "http://patchwork.ozlabs.org/api/series/492130/?format=api", "web_url": "http://patchwork.ozlabs.org/project/qemu-devel/list/?series=492130", "date": "2026-02-13T18:27:09", "name": "page-vary: Build set_preferred_target_page_bits() as common code", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/492130/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2196409/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2196409/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=fN6uYqHE;\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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charset=UTF-8", "Content-Transfer-Encoding": "8bit", "Received-SPF": "pass client-ip=2a00:1450:4864:20::32a;\n envelope-from=philmd@linaro.org; helo=mail-wm1-x32a.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=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": "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": "We'll use TARGET_PAGE_BITS_MIN in page-vary-common.c,\nso expose it via \"exec/page-vary.h\".\n\nSigned-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>\n---\n include/exec/page-vary.h | 14 ++++++++++++++\n page-vary-target.c | 15 ---------------\n 2 files changed, 14 insertions(+), 15 deletions(-)", "diff": "diff --git a/include/exec/page-vary.h b/include/exec/page-vary.h\nindex 101c25911c1..3c77689ca52 100644\n--- a/include/exec/page-vary.h\n+++ b/include/exec/page-vary.h\n@@ -20,6 +20,20 @@\n #ifndef EXEC_PAGE_VARY_H\n #define EXEC_PAGE_VARY_H\n \n+/*\n+ * For system mode, the minimum comes from the number of bits\n+ * required for maximum alignment (6) and the number of bits\n+ * required for TLB_FLAGS_MASK (3).\n+ *\n+ * For user mode, TARGET_PAGE_BITS_VARY is a hack to allow the target\n+ * page size to match the host page size. Mostly, this reduces the\n+ * ordinary target page size to run on a host with 4KiB pages (i.e. x86).\n+ * There is no true minimum required by the implementation, but keep the\n+ * same minimum as for system mode for sanity.\n+ * See linux-user/mmap.c, mmap_h_lt_g and mmap_h_gt_g.\n+ */\n+#define TARGET_PAGE_BITS_MIN 9\n+\n typedef struct {\n bool decided;\n int bits;\ndiff --git a/page-vary-target.c b/page-vary-target.c\nindex 49a32b4fe51..ab92da4539d 100644\n--- a/page-vary-target.c\n+++ b/page-vary-target.c\n@@ -23,21 +23,6 @@\n #include \"exec/page-vary.h\"\n #include \"exec/target_page.h\"\n \n-\n-/*\n- * For system mode, the minimum comes from the number of bits\n- * required for maximum alignment (6) and the number of bits\n- * required for TLB_FLAGS_MASK (3).\n- *\n- * For user mode, TARGET_PAGE_BITS_VARY is a hack to allow the target\n- * page size to match the host page size. Mostly, this reduces the\n- * ordinary target page size to run on a host with 4KiB pages (i.e. x86).\n- * There is no true minimum required by the implementation, but keep the\n- * same minimum as for system mode for sanity.\n- * See linux-user/mmap.c, mmap_h_lt_g and mmap_h_gt_g.\n- */\n-#define TARGET_PAGE_BITS_MIN 9\n-\n #ifndef TARGET_PAGE_BITS_VARY\n QEMU_BUILD_BUG_ON(TARGET_PAGE_BITS < TARGET_PAGE_BITS_MIN);\n #endif\n", "prefixes": [ "2/5" ] }