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Wed, 2 Sep 2026 06:14:31 +0000 (GMT) Message-ID: <99b1121d-4277-4764-8c3a-b3f6d9a47ab0@linux.ibm.com> Date: Wed, 2 Sep 2026 11:44:30 +0530 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 12/17] x86/crash: Use num_possible_cpus() for elfcorehdr size To: Jinjie Ruan , catalin.marinas@arm.com, will@kernel.org, mark.rutland@arm.com, chenhuacai@kernel.org, kernel@xen0n.name, maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org, tglx@kernel.org, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, hpa@zytor.com, akpm@linux-foundation.org, baoquan.he@linux.dev, rppt@kernel.org, pasha.tatashin@soleen.com, pratyush@kernel.org, ruirui.yang@linux.dev, kees@kernel.org, thuth@redhat.com, gshan@redhat.com, jic23@kernel.org, james.morse@arm.com, ardb@kernel.org, leitao@debian.org, yeoreum.yun@arm.com, coxu@redhat.com, tangyouling@kylinos.cn, hbathini@linux.ibm.com, adityag@linux.ibm.com, ionut.nechita@windriver.com, liaoyuanhong@vivo.com, seanjc@google.com, fuqiang.wang@easystack.cn, makb@juniper.net, piliu@redhat.com, ebiggers@kernel.org, jbouron@amazon.com, mclapinski@google.com, me@linux.beauty, graf@amazon.com, bgwin@google.com, robh@kernel.org, takahiro.akashi@linaro.org, palmer@rivosinc.com, x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, ionut.nechita@windriver.com, ionut.nechita@windriver.com References: <20260826092541.3905933-1-ruanjinjie@huawei.com> <20260826092541.3905933-13-ruanjinjie@huawei.com> Content-Language: en-US From: Sourabh Jain In-Reply-To: <20260826092541.3905933-13-ruanjinjie@huawei.com> Content-Type: text/plain; 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> + pnum = 2 + num_possible_cpus() + CONFIG_CRASH_MAX_MEMORY_RANGES; > else > - pnum += 2 + CONFIG_NR_CPUS; > + pnum += 2 + num_possible_cpus(); > > if (pnum < (unsigned long)PN_XNUM) { > kbuf.memsz = elf64_phdr_size(pnum); > @@ -429,7 +429,7 @@ unsigned int arch_crash_get_elfcorehdr_size(void) > unsigned int sz; > > /* kernel_map, VMCOREINFO and maximum CPUs */ > - sz = 2 + CONFIG_NR_CPUS; > + sz = 2 + num_possible_cpus(); > if (IS_ENABLED(CONFIG_MEMORY_HOTPLUG)) > sz += CONFIG_CRASH_MAX_MEMORY_RANGES; > sz *= sizeof(Elf64_Phdr);