{"id":2218883,"url":"http://patchwork.ozlabs.org/api/1.0/patches/2218883/?format=json","project":{"id":18,"url":"http://patchwork.ozlabs.org/api/1.0/projects/18/?format=json","name":"U-Boot","link_name":"uboot","list_id":"u-boot.lists.denx.de","list_email":"u-boot@lists.denx.de","web_url":null,"scm_url":null,"webscm_url":null},"msgid":"<20260402001410.3736815-6-rs@ti.com>","date":"2026-04-02T00:14:09","name":"[5/6] efi_memory: backfill EFI_CONVENTIONAL_MEMORY","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"bb367577376c5a82019e821076882fd66919a1db","submitter":{"id":88727,"url":"http://patchwork.ozlabs.org/api/1.0/people/88727/?format=json","name":"Randolph Sapp","email":"rs@ti.com"},"delegate":{"id":68728,"url":"http://patchwork.ozlabs.org/api/1.0/users/68728/?format=json","username":"xypron","first_name":"Heinrich","last_name":"Schuchardt","email":"xypron.glpk@gmx.de"},"mbox":"http://patchwork.ozlabs.org/project/uboot/patch/20260402001410.3736815-6-rs@ti.com/mbox/","series":[{"id":498412,"url":"http://patchwork.ozlabs.org/api/1.0/series/498412/?format=json","date":"2026-04-02T00:14:04","name":"various memory related fixups","version":1,"mbox":"http://patchwork.ozlabs.org/series/498412/mbox/"}],"check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2218883/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=ti.com header.i=@ti.com header.a=rsa-sha256\n header.s=selector1 header.b=iglIHacq;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; 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helo=lewvzet201.ext.ti.com; pr=C","From":"","To":", ,\n , , ,\n , , ,\n ","CC":"","Subject":"[PATCH 5/6] efi_memory: backfill EFI_CONVENTIONAL_MEMORY","Date":"Wed, 1 Apr 2026 19:14:09 -0500","Message-ID":"<20260402001410.3736815-6-rs@ti.com>","X-Mailer":"git-send-email 2.53.0","In-Reply-To":"<20260402001410.3736815-1-rs@ti.com>","References":"<20260402001410.3736815-1-rs@ti.com>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Content-Type":"text/plain","X-C2ProcessedOrg":"333ef613-75bf-4e12-a4b1-8e3623f5dcea","X-EOPAttributedMessage":"0","X-MS-PublicTrafficType":"Email","X-MS-TrafficTypeDiagnostic":"DS1PEPF00017096:EE_|DS0PR10MB7174:EE_","X-MS-Office365-Filtering-Correlation-Id":"bcf69ec6-6b10-44bf-0c60-08de904ccbe6","X-MS-Exchange-SenderADCheck":"1","X-MS-Exchange-AntiSpam-Relay":"0","X-Microsoft-Antispam":"BCL:0;\n ARA:13230040|376014|82310400026|1800799024|36860700016|22082099003|18002099003|56012099003;","X-Microsoft-Antispam-Message-Info":"\n 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","X-Forefront-Antispam-Report":"CIP:198.47.23.195; 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Ip=[198.47.23.195];\n Helo=[lewvzet201.ext.ti.com]","X-MS-Exchange-CrossTenant-AuthSource":"\n DS1PEPF00017096.namprd05.prod.outlook.com","X-MS-Exchange-CrossTenant-AuthAs":"Anonymous","X-MS-Exchange-CrossTenant-FromEntityHeader":"HybridOnPrem","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"DS0PR10MB7174","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.39","Precedence":"list","List-Id":"U-Boot discussion ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" ","X-Virus-Scanned":"clamav-milter 0.103.8 at phobos.denx.de","X-Virus-Status":"Clean"},"content":"From: Randolph Sapp \n\nBackfill any fragmented EFI_CONVENTIONAL_MEMORY when LMB allocations\nstart to fail. This may be a low memory environment, or maybe LMB is\nrunning up against a tricky reserved region.\n\nSigned-off-by: Randolph Sapp \n---\n lib/efi_loader/efi_memory.c | 35 +++++++++++++++++++++++++++++++++--\n 1 file changed, 33 insertions(+), 2 deletions(-)","diff":"diff --git a/lib/efi_loader/efi_memory.c b/lib/efi_loader/efi_memory.c\nindex 882366a9f8a..f07cc39b157 100644\n--- a/lib/efi_loader/efi_memory.c\n+++ b/lib/efi_loader/efi_memory.c\n@@ -441,6 +441,27 @@ static efi_status_t efi_check_allocated(u64 addr, bool must_be_allocated)\n \treturn EFI_NOT_FOUND;\n }\n \n+/**\n+ * efi_get_conventional_start - find the highest conventional region start\n+ * address with at least the specified number of\n+ * pages\n+ *\n+ * @pages: number of pages required to be in that carveout\n+ * Return: starting address of the give carveout\n+ */\n+static u64 efi_get_conventional_start(u64 pages)\n+{\n+\tstruct efi_mem_list *item;\n+\n+\tlist_for_each_entry(item, &efi_mem, link) {\n+\t\tif (item->desc.type != EFI_CONVENTIONAL_MEMORY)\n+\t\t\tcontinue;\n+\t\tif (item->desc.num_pages >= pages)\n+\t\t\treturn item->desc.physical_start;\n+\t}\n+\treturn 0;\n+}\n+\n /**\n * efi_allocate_pages - allocate memory pages\n *\n@@ -507,10 +528,20 @@ efi_status_t efi_allocate_pages(enum efi_allocate_type type,\n \t/* Reserve that map in our memory maps */\n \tret = efi_update_memory_map(efi_addr, pages, memory_type, true, false);\n \tif (ret != EFI_SUCCESS) {\n-\t\t/* Map would overlap, bail out */\n+\t\t/* Map would overlap, try something else */\n \t\tlmb_free(addr, (u64)pages << EFI_PAGE_SHIFT, flags);\n \t\tunmap_sysmem((void *)(uintptr_t)efi_addr);\n-\t\treturn EFI_OUT_OF_RESOURCES;\n+\n+\t\t/* See if there is any EFI_CONVENTIONAL_MEMORY allocations */\n+\t\tif (type != EFI_ALLOCATE_ADDRESS) {\n+\t\t\t*memory = efi_get_conventional_start(pages);\n+\t\t\tif (*memory != 0)\n+\t\t\t\treturn efi_allocate_pages(EFI_ALLOCATE_ADDRESS,\n+\t\t\t\t\t\t\t memory_type, pages,\n+\t\t\t\t\t\t\t memory);\n+\t\t}\n+\n+\t\treturn EFI_OUT_OF_RESOURCES;\n \t}\n \n \t*memory = efi_addr;\n","prefixes":["5/6"]}