Commit d38593f9 authored by Michael Holzheu's avatar Michael Holzheu Committed by Martin Schwidefsky
Browse files

[S390] Export vmcoreinfo note



This patch defines for s390 an ABI defined pointer to the vmcoreinfo note at
a well known address. With this patch tools are able to find this information
in dumps created by stand-alone or hypervisor dump tools.
Signed-off-by: default avatarMichael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent fa8ff292
......@@ -151,10 +151,11 @@ struct _lowcore {
*/
__u32 ipib; /* 0x0e00 */
__u32 ipib_checksum; /* 0x0e04 */
__u32 vmcore_info; /* 0x0e08 */
/* 64 bit save area */
__u64 save_area_64; /* 0x0e08 */
__u8 pad_0x0e10[0x0f00-0x0e10]; /* 0x0e10 */
__u64 save_area_64; /* 0x0e0c */
__u8 pad_0x0e14[0x0f00-0x0e14]; /* 0x0e14 */
/* Extended facility list */
__u64 stfle_fac_list[32]; /* 0x0f00 */
......@@ -290,10 +291,11 @@ struct _lowcore {
*/
__u64 ipib; /* 0x0e00 */
__u32 ipib_checksum; /* 0x0e08 */
__u64 vmcore_info; /* 0x0e0c */
/* 64 bit save area */
__u64 save_area_64; /* 0x0e0c */
__u8 pad_0x0e14[0x0f00-0x0e14]; /* 0x0e14 */
__u64 save_area_64; /* 0x0e14 */
__u8 pad_0x0e1c[0x0f00-0x0e1c]; /* 0x0e1c */
/* Extended facility list */
__u64 stfle_fac_list[32]; /* 0x0f00 */
......
......@@ -558,6 +558,15 @@ static void __init setup_restart_psw(void)
copy_to_absolute_zero(&S390_lowcore.restart_psw, &psw, sizeof(psw));
}
static void __init setup_vmcoreinfo(void)
{
#ifdef CONFIG_KEXEC
unsigned long ptr = paddr_vmcoreinfo_note();
copy_to_absolute_zero(&S390_lowcore.vmcore_info, &ptr, sizeof(ptr));
#endif
}
#ifdef CONFIG_CRASH_DUMP
/*
......@@ -1022,6 +1031,7 @@ setup_arch(char **cmdline_p)
reserve_crashkernel();
setup_memory();
setup_resources();
setup_vmcoreinfo();
setup_restart_psw();
setup_lowcore();
......
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