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authorMichael Holzheu <holzheu@de.ibm.com>2007-04-27 16:01:49 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2007-04-27 16:01:44 +0200
commit411ed3225733dbd83b4cbaaa992ef80d6ec1534e (patch)
tree388aeac39e9fad5f7cadcc8fcbf0838811f5829d /include/asm-s390/setup.h
parent7039d3a11c4b4b59f9ef933b4b0a28304bdd07d1 (diff)
[S390] zfcpdump support.
s390 machines provide hardware support for creating Linux dumps on SCSI disks. For creating a dump a special purpose dump Linux is used. The first 32 MB of memory are saved by the hardware before the dump Linux is booted. Via an SCLP interface, the saved memory can be accessed from Linux. This patch exports memory and registers of the crashed Linux to userspace via a debugfs file. For more information refer to Documentation/s390/zfcpdump.txt, which is included in this patch. Signed-off-by: Michael Holzheu <holzheu@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Diffstat (limited to 'include/asm-s390/setup.h')
-rw-r--r--include/asm-s390/setup.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-s390/setup.h b/include/asm-s390/setup.h
index 44c7aee2bd3..a76a6b8fd88 100644
--- a/include/asm-s390/setup.h
+++ b/include/asm-s390/setup.h
@@ -40,6 +40,7 @@ struct mem_chunk {
};
extern struct mem_chunk memory_chunk[];
+extern unsigned long real_memory_size;
#ifdef CONFIG_S390_SWITCH_AMODE
extern unsigned int switch_amode;
@@ -77,6 +78,7 @@ extern unsigned long machine_flags;
#endif /* __s390x__ */
#define MACHINE_HAS_SCLP (!MACHINE_IS_P390)
+#define ZFCPDUMP_HSA_SIZE (32UL<<20)
/*
* Console mode. Override with conmode=