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authorMichael Holzheu <holzheu@linux.vnet.ibm.com>2012-03-11 11:59:34 -0400
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2012-03-11 11:59:29 -0400
commit4857d4bbe9821c8d732cb84455e18e12b3d79add (patch)
tree54583e3ef5c84c04f92b7b15ea6aad8224781d9b /arch/s390/kernel/setup.c
parentad252ffa2a0fbb1f37e81688322034b3af037cee (diff)
[S390] kernel: Add OS info memory interface
In order to allow kdump based stand-alone dump, some information has to be passed from the old kernel to the new dump kernel. This is done via a the struct "os_info" that contains the following fields: * crashkernel base and size * reipl block * vmcoreinfo * init function A pointer to os_info is stored at a well known storage location and the whole structure as well as all fields are secured with checksums. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/setup.c')
-rw-r--r--arch/s390/kernel/setup.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 9a3edb5f2c92..38e751278bf7 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -62,6 +62,7 @@
#include <asm/ebcdic.h>
#include <asm/kvm_virtio.h>
#include <asm/diag.h>
+#include <asm/os_info.h>
#include "entry.h"
long psw_kernel_bits = PSW_DEFAULT_KEY | PSW_MASK_BASE | PSW_ASC_PRIMARY |
@@ -778,6 +779,7 @@ static void __init reserve_crashkernel(void)
pr_info("Reserving %lluMB of memory at %lluMB "
"for crashkernel (System RAM: %luMB)\n",
crash_size >> 20, crash_base >> 20, memory_end >> 20);
+ os_info_crashkernel_add(crash_base, crash_size);
#endif
}
@@ -1057,6 +1059,7 @@ void __init setup_arch(char **cmdline_p)
parse_early_param();
+ os_info_init();
setup_ipl();
setup_memory_end();
setup_addressing_mode();