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From: Eric DeVolder <eric.devolder@oracle.com>
To: kexec@lists.infradead.org
Cc: boris.ostrovsky@oracle.com, eric.devolder@oracle.com
Subject: [PATCH v1 7/7] crashdump/x86: utilize get_elfcorehdrsz()
Date: Thu, 20 Oct 2022 13:03:44 -0400	[thread overview]
Message-ID: <20221020170344.1962-8-eric.devolder@oracle.com> (raw)
In-Reply-To: <20221020170344.1962-1-eric.devolder@oracle.com>

Call get_elfcorehdrsz() to obtain the size of the elfcorehdr
buffer.

Signed-off-by: Eric DeVolder <eric.devolder@oracle.com>
---
 kexec/arch/i386/crashdump-x86.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump-x86.c
index cb86ca7..29d4ba5 100644
--- a/kexec/arch/i386/crashdump-x86.c
+++ b/kexec/arch/i386/crashdump-x86.c
@@ -957,6 +957,12 @@ int load_crashdump_segments(struct kexec_info *info, char* mod_cmdline,
 		memsz = bufsz;
 	}
 
+	/* Adjust size of buffer according to hotplug and user */
+	sz = get_elfcorehdrsz(&elf_info, bufsz, CRASH_MAX_MEMORY_RANGES);
+	if (sz > memsz)
+		memsz = sz;
+	memsz = _ALIGN(memsz, align);
+
 	/* Record the location of the elfcorehdr for hotplug handling */
 	info->elfcorehdr =
 	elfcorehdr = add_buffer(info, tmp, bufsz, memsz, align, min_base,
-- 
2.31.1


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      parent reply	other threads:[~2022-10-20 17:04 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-20 17:03 [PATCH v1 0/7] crashdump: Kernel handling of CPU and memory hot un/plug Eric DeVolder
2022-10-20 17:03 ` [PATCH v1 1/7] crashdump: introduce the --hotplug option Eric DeVolder
2022-10-20 17:03 ` [PATCH v1 2/7] crashdump: exclude elfcorehdr segment from digest for hotplug Eric DeVolder
2022-10-20 17:03 ` [PATCH v1 3/7] crashdump/x86: identify elfcorehdr segment " Eric DeVolder
2022-10-20 17:03 ` [PATCH v1 4/7] kexec: create get_nr_cpus() Eric DeVolder
2022-10-20 17:03 ` [PATCH v1 5/7] crashdump: introduce --elfcorehdrsz option Eric DeVolder
2022-10-20 17:03 ` [PATCH v1 6/7] crashdump: create get_elfcorehdrsz() Eric DeVolder
2022-10-20 17:03 ` Eric DeVolder [this message]

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