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GET /api/patches/2215474/?format=api
{ "id": 2215474, "url": "http://patchwork.ozlabs.org/api/patches/2215474/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260324165633.4583-2-ilpo.jarvinen@linux.intel.com/", "project": { "id": 28, "url": "http://patchwork.ozlabs.org/api/projects/28/?format=api", "name": "Linux PCI development", "link_name": "linux-pci", "list_id": "linux-pci.vger.kernel.org", "list_email": "linux-pci@vger.kernel.org", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260324165633.4583-2-ilpo.jarvinen@linux.intel.com>", "list_archive_url": null, "date": "2026-03-24T16:56:24", "name": "[01/10] resource: Add __resource_contains_unbound() for internal contains checks", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "126ce096f6773287bf75a9f91bd2f4c29506bcd5", "submitter": { "id": 83553, "url": "http://patchwork.ozlabs.org/api/people/83553/?format=api", "name": "Ilpo Järvinen", "email": "ilpo.jarvinen@linux.intel.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linux-pci/patch/20260324165633.4583-2-ilpo.jarvinen@linux.intel.com/mbox/", "series": [ { "id": 497318, "url": "http://patchwork.ozlabs.org/api/series/497318/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linux-pci/list/?series=497318", "date": "2026-03-24T16:56:23", "name": "PCI: Improve head free space usage", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/497318/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2215474/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2215474/checks/", "tags": {}, "related": [], "headers": { "Return-Path": "\n <linux-pci+bounces-50930-incoming=patchwork.ozlabs.org@vger.kernel.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linux-pci@vger.kernel.org" ], "Delivered-To": "patchwork-incoming@legolas.ozlabs.org", "Authentication-Results": [ "legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=intel.com header.i=@intel.com header.a=rsa-sha256\n header.s=Intel header.b=c/Cx3dv3;\n\tdkim-atps=neutral", "legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c0a:e001:db::12fc:5321; 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a=\"86471560\"", "E=Sophos;i=\"6.23,138,1770624000\";\n d=\"scan'208\";a=\"86471560\"", "E=Sophos;i=\"6.23,138,1770624000\";\n d=\"scan'208\";a=\"224421884\"" ], "X-ExtLoop1": "1", "From": "=?utf-8?q?Ilpo_J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>", "To": "linux-pci@vger.kernel.org,\n\tBjorn Helgaas <bhelgaas@google.com>,\n\tGuenter Roeck <linux@roeck-us.net>,\n\tlinux-alpha@vger.kernel.org,\n\tlinux-arm-kernel@lists.infradead.org,\n\tlinux-m68k@lists.linux-m68k.org,\n\tlinux-mips@vger.kernel.org,\n\tlinux-parisc@vger.kernel.org,\n\tlinuxppc-dev@lists.ozlabs.org,\n\tlinux-s390@vger.kernel.org,\n\tlinux-sh@vger.kernel.org,\n\tRussell King <linux@armlinux.org.uk>,\n\tGeert Uytterhoeven <geert@linux-m68k.org>,\n\tThomas Bogendoerfer <tsbogend@alpha.franken.de>,\n\t\"James E.J. Bottomley\" <James.Bottomley@HansenPartnership.com>,\n\tHelge Deller <deller@gmx.de>,\n\tMichael Ellerman <mpe@ellerman.id.au>,\n\tThomas Gleixner <tglx@kernel.org>,\n\tIngo Molnar <mingo@redhat.com>,\n\tBorislav Petkov <bp@alien8.de>,\n\tDave Hansen <dave.hansen@linux.intel.com>,\n\t\"H. Peter Anvin\" <hpa@zytor.com>,\n\tChris Zankel <chris@zankel.net>,\n\tMax Filippov <jcmvbkbc@gmail.com>,\n\tMadhavan Srinivasan <maddy@linux.ibm.com>,\n\tYoshinori Sato <ysato@users.sourceforge.jp>,\n\tRich Felker <dalias@libc.org>,\n\tJohn Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,\n\tlinux-kernel@vger.kernel.org", "Cc": "=?utf-8?q?Ilpo_J=C3=A4rvinen?= <ilpo.jarvinen@linux.intel.com>", "Subject": "[PATCH 01/10] resource: Add __resource_contains_unbound() for\n internal contains checks", "Date": "Tue, 24 Mar 2026 18:56:24 +0200", "Message-Id": "<20260324165633.4583-2-ilpo.jarvinen@linux.intel.com>", "X-Mailer": "git-send-email 2.39.5", "In-Reply-To": "<20260324165633.4583-1-ilpo.jarvinen@linux.intel.com>", "References": "<20260324165633.4583-1-ilpo.jarvinen@linux.intel.com>", "Precedence": "bulk", "X-Mailing-List": "linux-pci@vger.kernel.org", "List-Id": "<linux-pci.vger.kernel.org>", "List-Subscribe": "<mailto:linux-pci+subscribe@vger.kernel.org>", "List-Unsubscribe": "<mailto:linux-pci+unsubscribe@vger.kernel.org>", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=UTF-8", "Content-Transfer-Encoding": "8bit" }, "content": "__find_resource_space() currently uses resource_contains() but for\ntentative resources that are not yet crafted into the resource tree. As\nresource_contains() checks that IORESOURCE_UNSET is not set for either\nof the resources, the caller has to hack around this problem by\nclearing the IORESOURCE_UNSET flag (essentially lying to\nresource_contains()).\n\nInstead of the hack, introduce __resource_contains_unbound() for cases\nlike this.\n\nSigned-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>\n---\n include/linux/ioport.h | 20 +++++++++++++++++---\n kernel/resource.c | 4 ++--\n 2 files changed, 19 insertions(+), 5 deletions(-)", "diff": "diff --git a/include/linux/ioport.h b/include/linux/ioport.h\nindex 5533a5debf3f..19d5e04564d9 100644\n--- a/include/linux/ioport.h\n+++ b/include/linux/ioport.h\n@@ -304,14 +304,28 @@ static inline unsigned long resource_ext_type(const struct resource *res)\n {\n \treturn res->flags & IORESOURCE_EXT_TYPE_BITS;\n }\n-/* True iff r1 completely contains r2 */\n-static inline bool resource_contains(const struct resource *r1, const struct resource *r2)\n+\n+/*\n+ * For checking if @r1 completely contains @r2 for resources that have real\n+ * addresses but are not yet crafted into the resource tree. Normally\n+ * resource_contains() should be used instead of this function as it checks\n+ * also IORESOURCE_UNSET flag.\n+ */\n+static inline bool __resource_contains_unbound(const struct resource *r1,\n+\t\t\t\t\t const struct resource *r2)\n {\n \tif (resource_type(r1) != resource_type(r2))\n \t\treturn false;\n+\n+\treturn r1->start <= r2->start && r1->end >= r2->end;\n+}\n+/* True iff r1 completely contains r2 */\n+static inline bool resource_contains(const struct resource *r1, const struct resource *r2)\n+{\n \tif (r1->flags & IORESOURCE_UNSET || r2->flags & IORESOURCE_UNSET)\n \t\treturn false;\n-\treturn r1->start <= r2->start && r1->end >= r2->end;\n+\n+\treturn __resource_contains_unbound(r1, r2);\n }\n \n /* True if any part of r1 overlaps r2 */\ndiff --git a/kernel/resource.c b/kernel/resource.c\nindex bb966699da31..1e2f1dfc0edd 100644\n--- a/kernel/resource.c\n+++ b/kernel/resource.c\n@@ -754,7 +754,7 @@ static int __find_resource_space(struct resource *root, struct resource *old,\n \t\t/* Check for overflow after ALIGN() */\n \t\tavail.start = ALIGN(tmp.start, constraint->align);\n \t\tavail.end = tmp.end;\n-\t\tavail.flags = new->flags & ~IORESOURCE_UNSET;\n+\t\tavail.flags = new->flags;\n \t\tif (avail.start >= tmp.start) {\n \t\t\talloc.flags = avail.flags;\n \t\t\tif (alignf) {\n@@ -765,7 +765,7 @@ static int __find_resource_space(struct resource *root, struct resource *old,\n \t\t\t}\n \t\t\talloc.end = alloc.start + size - 1;\n \t\t\tif (alloc.start <= alloc.end &&\n-\t\t\t resource_contains(&avail, &alloc)) {\n+\t\t\t __resource_contains_unbound(&avail, &alloc)) {\n \t\t\t\tnew->start = alloc.start;\n \t\t\t\tnew->end = alloc.end;\n \t\t\t\treturn 0;\n", "prefixes": [ "01/10" ] }