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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 v3 1/6] kexec: define KEXEC_UPDATE_ELFCOREHDR
Date: Wed, 27 Sep 2023 14:11:31 -0400	[thread overview]
Message-ID: <20230927181136.2627-2-eric.devolder@oracle.com> (raw)
In-Reply-To: <20230927181136.2627-1-eric.devolder@oracle.com>

The Linux kernel defines this flag to indicate that the kexec_load()'ed
image is setup so that the kernel may directly modify the elfcorehdr
(and not cause the purgatory digest checksum to fail) in response to
CPU or memory hot un/plug and/or on/offline events.

Define this flag to match/mirror the kernel flag.

Signed-off-by: Eric DeVolder <eric.devolder@oracle.com>
---
 kexec/kexec-syscall.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/kexec/kexec-syscall.h b/kexec/kexec-syscall.h
index 1e2d12f..2559bff 100644
--- a/kexec/kexec-syscall.h
+++ b/kexec/kexec-syscall.h
@@ -112,6 +112,7 @@ static inline long kexec_file_load(int kernel_fd, int initrd_fd,
 
 #define KEXEC_ON_CRASH		0x00000001
 #define KEXEC_PRESERVE_CONTEXT	0x00000002
+#define KEXEC_UPDATE_ELFCOREHDR	0x00000004
 #define KEXEC_ARCH_MASK		0xffff0000
 
 /* Flags for kexec file based system call */
-- 
2.39.3


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  reply	other threads:[~2023-09-27 18:12 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-09-27 18:11 [PATCH v3 0/6] crashdump: Kernel handling of CPU and memory hot un/plug Eric DeVolder
2023-09-27 18:11 ` Eric DeVolder [this message]
2023-09-27 18:11 ` [PATCH v3 2/6] crashdump: introduce the hotplug command line options Eric DeVolder
2023-09-27 18:11 ` [PATCH v3 3/6] crashdump: setup general hotplug support Eric DeVolder
2023-09-27 18:11 ` [PATCH v3 4/6] crashdump: exclude elfcorehdr segment from digest for hotplug Eric DeVolder
2023-09-27 18:11 ` [PATCH v3 5/6] crashdump/x86: identify elfcorehdr segment " Eric DeVolder
2023-09-27 18:11 ` [PATCH v3 6/6] crashdump/x86: set the elfcorehdr segment size " Eric DeVolder
2023-10-04 12:08 ` [PATCH v3 0/6] crashdump: Kernel handling of CPU and memory hot un/plug Simon Horman
2023-10-04 18:23   ` Eric DeVolder

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