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| author | Michael Holzheu <holzheu@linux.vnet.ibm.com> | 2012-03-11 11:59:34 -0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2012-03-11 11:59:29 -0400 |
| commit | 4857d4bbe9821c8d732cb84455e18e12b3d79add (patch) | |
| tree | 54583e3ef5c84c04f92b7b15ea6aad8224781d9b /arch/s390/include/asm/lowcore.h | |
| parent | ad252ffa2a0fbb1f37e81688322034b3af037cee (diff) | |
| download | linux-4857d4bbe9821c8d732cb84455e18e12b3d79add.tar.gz linux-4857d4bbe9821c8d732cb84455e18e12b3d79add.tar.bz2 linux-4857d4bbe9821c8d732cb84455e18e12b3d79add.zip | |
[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/include/asm/lowcore.h')
| -rw-r--r-- | arch/s390/include/asm/lowcore.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h index 4e69563bc956..a47c6e221a95 100644 --- a/arch/s390/include/asm/lowcore.h +++ b/arch/s390/include/asm/lowcore.h @@ -154,7 +154,9 @@ struct _lowcore { __u32 ipib; /* 0x0e00 */ __u32 ipib_checksum; /* 0x0e04 */ __u32 vmcore_info; /* 0x0e08 */ - __u8 pad_0x0e0c[0x0f00-0x0e0c]; /* 0x0e0c */ + __u8 pad_0x0e0c[0x0e18-0x0e0c]; /* 0x0e0c */ + __u32 os_info; /* 0x0e18 */ + __u8 pad_0x0e1c[0x0f00-0x0e1c]; /* 0x0e1c */ /* Extended facility list */ __u64 stfle_fac_list[32]; /* 0x0f00 */ @@ -301,7 +303,9 @@ struct _lowcore { __u64 ipib; /* 0x0e00 */ __u32 ipib_checksum; /* 0x0e08 */ __u64 vmcore_info; /* 0x0e0c */ - __u8 pad_0x0e14[0x0f00-0x0e14]; /* 0x0e14 */ + __u8 pad_0x0e14[0x0e18-0x0e14]; /* 0x0e14 */ + __u64 os_info; /* 0x0e18 */ + __u8 pad_0x0e20[0x0f00-0x0e20]; /* 0x0e20 */ /* Extended facility list */ __u64 stfle_fac_list[32]; /* 0x0f00 */ |