From: Eric DeVolder <eric.devolder@oracle.com>
To: kexec@lists.infradead.org
Cc: boris.ostrovsky@oracle.com, eric.devolder@oracle.com
Subject: [PATCH v2 6/6] crashdump/x86: set the elfcorehdr segment size for hotplug
Date: Wed, 3 May 2023 18:16:11 -0400 [thread overview]
Message-ID: <20230503221611.2119-7-eric.devolder@oracle.com> (raw)
In-Reply-To: <20230503221611.2119-1-eric.devolder@oracle.com>
For hotplug, the elfcorehdr segment must be oversized to allow a
growing number of CPUs or memory regions.
Signed-off-by: Eric DeVolder <eric.devolder@oracle.com>
---
kexec/arch/i386/crashdump-x86.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/kexec/arch/i386/crashdump-x86.c b/kexec/arch/i386/crashdump-x86.c
index cb86ca7..18f745e 100644
--- a/kexec/arch/i386/crashdump-x86.c
+++ b/kexec/arch/i386/crashdump-x86.c
@@ -957,6 +957,11 @@ int load_crashdump_segments(struct kexec_info *info, char* mod_cmdline,
memsz = bufsz;
}
+ /* Handle override in order to support hotplug */
+ if (do_hotplug) {
+ memsz = _ALIGN(elfcorehdrsz, 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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next prev parent reply other threads:[~2023-05-03 22:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-05-03 22:16 [PATCH v2 0/6] crashdump: Kernel handling of CPU and memory hot un/plug Eric DeVolder
2023-05-03 22:16 ` [PATCH v2 1/6] kexec: define KEXEC_UPDATE_ELFCOREHDR Eric DeVolder
2023-05-03 22:16 ` [PATCH v2 2/6] crashdump: introduce the hotplug command line options Eric DeVolder
2023-05-03 22:16 ` [PATCH v2 3/6] crashdump: setup hotplug support Eric DeVolder
2023-05-03 22:16 ` [PATCH v2 4/6] crashdump: exclude elfcorehdr segment from digest for hotplug Eric DeVolder
2023-05-03 22:16 ` [PATCH v2 5/6] crashdump/x86: identify elfcorehdr segment " Eric DeVolder
2023-05-03 22:16 ` Eric DeVolder [this message]
2023-05-04 6:19 ` [PATCH v2 0/6] crashdump: Kernel handling of CPU and memory hot un/plug Hari Bathini
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