{"id":2218967,"url":"http://patchwork.ozlabs.org/api/patches/2218967/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260402072701.628293-14-ruanjinjie@huawei.com/","project":{"id":2,"url":"http://patchwork.ozlabs.org/api/projects/2/?format=json","name":"Linux PPC development","link_name":"linuxppc-dev","list_id":"linuxppc-dev.lists.ozlabs.org","list_email":"linuxppc-dev@lists.ozlabs.org","web_url":"https://github.com/linuxppc/wiki/wiki","scm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git","webscm_url":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/","list_archive_url":"https://lore.kernel.org/linuxppc-dev/","list_archive_url_format":"https://lore.kernel.org/linuxppc-dev/{}/","commit_url_format":"https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/commit/?id={}"},"msgid":"<20260402072701.628293-14-ruanjinjie@huawei.com>","list_archive_url":"https://lore.kernel.org/linuxppc-dev/20260402072701.628293-14-ruanjinjie@huawei.com/","date":"2026-04-02T07:26:59","name":"[v12,13/15] crash: Use crash_exclude_core_ranges() on powerpc","commit_ref":null,"pull_url":null,"state":"handled-elsewhere","archived":false,"hash":"8e03482d615fd4d2346f3e575ca494d539b282b7","submitter":{"id":84791,"url":"http://patchwork.ozlabs.org/api/people/84791/?format=json","name":"Jinjie Ruan","email":"ruanjinjie@huawei.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260402072701.628293-14-ruanjinjie@huawei.com/mbox/","series":[{"id":498443,"url":"http://patchwork.ozlabs.org/api/series/498443/?format=json","web_url":"http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=498443","date":"2026-04-02T07:26:46","name":"arm64/riscv: Add support for crashkernel CMA reservation","version":12,"mbox":"http://patchwork.ozlabs.org/series/498443/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2218967/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2218967/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n 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2.34.1","In-Reply-To":"<20260402072701.628293-1-ruanjinjie@huawei.com>","References":"<20260402072701.628293-1-ruanjinjie@huawei.com>","X-Mailing-List":"linuxppc-dev@lists.ozlabs.org","List-Id":"","List-Help":"","List-Owner":"","List-Post":"","List-Archive":",\n ","List-Subscribe":",\n ,\n ","List-Unsubscribe":"","Precedence":"list","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Content-Type":"text/plain","X-Originating-IP":"[10.90.53.73]","X-ClientProxiedBy":"kwepems100002.china.huawei.com (7.221.188.206) To\n dggpemf500011.china.huawei.com (7.185.36.131)","X-Spam-Status":"No, score=-0.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tDKIM_VALID_AU,DKIM_VALID_EF,SPF_HELO_NONE,SPF_PASS autolearn=disabled\n\tversion=4.0.1 OzLabs 8","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org"},"content":"The crash memory exclude of crashk_res and crashk_cma memory on powerpc\nare almost identical to the generic crash_exclude_core_ranges().\n\nBy introducing the architecture-specific arch_crash_exclude_mem_range()\nfunction with a default implementation of crash_exclude_mem_range(),\nand using crash_exclude_mem_range_guarded as powerpc's separate\nimplementation, the generic crash_exclude_core_ranges() helper function\ncan be reused.\n\nCc: Andrew Morton \nCc: Hari Bathini \nCc: Madhavan Srinivasan \nCc: Mahesh Salgaonkar \nCc: Michael Ellerman \nCc: Ritesh Harjani (IBM) \nCc: Shivang Upadhyay \nAcked-by: Baoquan He \nReviewed-by: Sourabh Jain \nAcked-by: Mike Rapoport (Microsoft) \nSigned-off-by: Jinjie Ruan \n---\n arch/powerpc/include/asm/kexec_ranges.h | 3 ---\n arch/powerpc/kexec/crash.c | 2 +-\n arch/powerpc/kexec/ranges.c | 16 ++++------------\n include/linux/crash_core.h | 4 ++++\n kernel/crash_core.c | 19 +++++++++++++------\n 5 files changed, 22 insertions(+), 22 deletions(-)","diff":"diff --git a/arch/powerpc/include/asm/kexec_ranges.h b/arch/powerpc/include/asm/kexec_ranges.h\nindex ad95e3792d10..8489e844b447 100644\n--- a/arch/powerpc/include/asm/kexec_ranges.h\n+++ b/arch/powerpc/include/asm/kexec_ranges.h\n@@ -7,9 +7,6 @@\n void sort_memory_ranges(struct crash_mem *mrngs, bool merge);\n struct crash_mem *realloc_mem_ranges(struct crash_mem **mem_ranges);\n int add_mem_range(struct crash_mem **mem_ranges, u64 base, u64 size);\n-int crash_exclude_mem_range_guarded(struct crash_mem **mem_ranges,\n-\t\t\t\t unsigned long long mstart,\n-\t\t\t\t unsigned long long mend);\n int get_exclude_memory_ranges(struct crash_mem **mem_ranges);\n int get_reserved_memory_ranges(struct crash_mem **mem_ranges);\n int get_crash_memory_ranges(struct crash_mem **mem_ranges);\ndiff --git a/arch/powerpc/kexec/crash.c b/arch/powerpc/kexec/crash.c\nindex 1426d2099bad..52992309e28c 100644\n--- a/arch/powerpc/kexec/crash.c\n+++ b/arch/powerpc/kexec/crash.c\n@@ -451,7 +451,7 @@ static void update_crash_elfcorehdr(struct kimage *image, struct memory_notify *\n \t\tbase_addr = PFN_PHYS(mn->start_pfn);\n \t\tsize = mn->nr_pages * PAGE_SIZE;\n \t\tend = base_addr + size - 1;\n-\t\tret = crash_exclude_mem_range_guarded(&cmem, base_addr, end);\n+\t\tret = arch_crash_exclude_mem_range(&cmem, base_addr, end);\n \t\tif (ret) {\n \t\t\tpr_err(\"Failed to remove hot-unplugged memory from crash memory ranges\\n\");\n \t\t\tgoto out;\ndiff --git a/arch/powerpc/kexec/ranges.c b/arch/powerpc/kexec/ranges.c\nindex 6c58bcc3e130..e5fea23b191b 100644\n--- a/arch/powerpc/kexec/ranges.c\n+++ b/arch/powerpc/kexec/ranges.c\n@@ -553,9 +553,9 @@ int get_usable_memory_ranges(struct crash_mem **mem_ranges)\n #endif /* CONFIG_KEXEC_FILE */\n \n #ifdef CONFIG_CRASH_DUMP\n-int crash_exclude_mem_range_guarded(struct crash_mem **mem_ranges,\n-\t\t\t\t\t unsigned long long mstart,\n-\t\t\t\t\t unsigned long long mend)\n+int arch_crash_exclude_mem_range(struct crash_mem **mem_ranges,\n+\t\t\t\t unsigned long long mstart,\n+\t\t\t\t unsigned long long mend)\n {\n \tstruct crash_mem *tmem = *mem_ranges;\n \n@@ -604,18 +604,10 @@ int get_crash_memory_ranges(struct crash_mem **mem_ranges)\n \t\t\tsort_memory_ranges(*mem_ranges, true);\n \t}\n \n-\t/* Exclude crashkernel region */\n-\tret = crash_exclude_mem_range_guarded(mem_ranges, crashk_res.start, crashk_res.end);\n+\tret = crash_exclude_core_ranges(mem_ranges);\n \tif (ret)\n \t\tgoto out;\n \n-\tfor (i = 0; i < crashk_cma_cnt; ++i) {\n-\t\tret = crash_exclude_mem_range_guarded(mem_ranges, crashk_cma_ranges[i].start,\n-\t\t\t\t\t crashk_cma_ranges[i].end);\n-\t\tif (ret)\n-\t\t\tgoto out;\n-\t}\n-\n \t/*\n \t * FIXME: For now, stay in parity with kexec-tools but if RTAS/OPAL\n \t * regions are exported to save their context at the time of\ndiff --git a/include/linux/crash_core.h b/include/linux/crash_core.h\nindex 033b20204aca..dbec826dc53b 100644\n--- a/include/linux/crash_core.h\n+++ b/include/linux/crash_core.h\n@@ -68,6 +68,7 @@ extern int crash_prepare_elf64_headers(struct crash_mem *mem, int need_kernel_ma\n \t\t\t\t void **addr, unsigned long *sz);\n extern int crash_prepare_headers(int need_kernel_map, void **addr,\n \t\t\t\t unsigned long *sz, unsigned long *nr_mem_ranges);\n+extern int crash_exclude_core_ranges(struct crash_mem **cmem);\n \n struct kimage;\n struct kexec_segment;\n@@ -88,6 +89,9 @@ extern int kimage_crash_copy_vmcoreinfo(struct kimage *image);\n extern unsigned int arch_get_system_nr_ranges(void);\n extern int arch_crash_populate_cmem(struct crash_mem *cmem);\n extern int arch_crash_exclude_ranges(struct crash_mem *cmem);\n+extern int arch_crash_exclude_mem_range(struct crash_mem **mem,\n+\t\t\t\t\tunsigned long long mstart,\n+\t\t\t\t\tunsigned long long mend);\n \n #else /* !CONFIG_CRASH_DUMP*/\n struct pt_regs;\ndiff --git a/kernel/crash_core.c b/kernel/crash_core.c\nindex 96a96e511f5a..300d44ad5471 100644\n--- a/kernel/crash_core.c\n+++ b/kernel/crash_core.c\n@@ -287,24 +287,31 @@ unsigned int __weak arch_get_system_nr_ranges(void) { return 0; }\n int __weak arch_crash_populate_cmem(struct crash_mem *cmem) { return -1; }\n int __weak arch_crash_exclude_ranges(struct crash_mem *cmem) { return 0; }\n \n-static int crash_exclude_core_ranges(struct crash_mem *cmem)\n+int __weak arch_crash_exclude_mem_range(struct crash_mem **mem,\n+\t\t\t\t\tunsigned long long mstart,\n+\t\t\t\t\tunsigned long long mend)\n+{\n+\treturn crash_exclude_mem_range(*mem, mstart, mend);\n+}\n+\n+int crash_exclude_core_ranges(struct crash_mem **cmem)\n {\n \tint ret, i;\n \n \t/* Exclude crashkernel region */\n-\tret = crash_exclude_mem_range(cmem, crashk_res.start, crashk_res.end);\n+\tret = arch_crash_exclude_mem_range(cmem, crashk_res.start, crashk_res.end);\n \tif (ret)\n \t\treturn ret;\n \n \tif (crashk_low_res.end) {\n-\t\tret = crash_exclude_mem_range(cmem, crashk_low_res.start, crashk_low_res.end);\n+\t\tret = arch_crash_exclude_mem_range(cmem, crashk_low_res.start, crashk_low_res.end);\n \t\tif (ret)\n \t\t\treturn ret;\n \t}\n \n \tfor (i = 0; i < crashk_cma_cnt; ++i) {\n-\t\tret = crash_exclude_mem_range(cmem, crashk_cma_ranges[i].start,\n-\t\t\t\t\t crashk_cma_ranges[i].end);\n+\t\tret = arch_crash_exclude_mem_range(cmem, crashk_cma_ranges[i].start,\n+\t\t\t\t\t\t crashk_cma_ranges[i].end);\n \t\tif (ret)\n \t\t\treturn ret;\n \t}\n@@ -331,7 +338,7 @@ int crash_prepare_headers(int need_kernel_map, void **addr, unsigned long *sz,\n \tif (ret)\n \t\tgoto out;\n \n-\tret = crash_exclude_core_ranges(cmem);\n+\tret = crash_exclude_core_ranges(&cmem);\n \tif (ret)\n \t\tgoto out;\n \n","prefixes":["v12","13/15"]}