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| author | Mikhail Zaslonko <zaslonko@linux.ibm.com> | 2023-03-30 10:18:01 +0300 |
|---|---|---|
| committer | Alexander Gordeev <agordeev@linux.ibm.com> | 2023-06-01 18:07:56 +0300 |
| commit | 31e9ccc67ce24f82120e41fcafd841f98838ff5c (patch) | |
| tree | cc32ae9de2e95ea7e10862bd0e8b3d6abe1fa33b /arch/s390/kernel/ipl.c | |
| parent | d933e5f41e4f6c54f4bd3e0b29ca4854fe5fa0d6 (diff) | |
| download | linux-31e9ccc67ce24f82120e41fcafd841f98838ff5c.tar.xz | |
s390/ipl: add REIPL_CLEAR flag to os_info
Introduce new OS_INFO_FLAGS_ENTRY to os_info pointing to the field
with bit flags.
Add OS_INFO_FLAGS_ENTRY upon dump_reipl shutdown action processing and
set OS_INFO_FLAG_REIPL_CLEAR flag indicating 'clear' sysfs attribute has
been set on the panicked system for specified ipl type. This flag can be
used to inform the dumper whether LOAD_CLEAR or LOAD_NORMAL diag308
subcode to be used for ipl after dumping the memory.
Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com>
Acked-by: Alexander Gordeev <agordeev@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/ipl.c')
| -rw-r--r-- | arch/s390/kernel/ipl.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index 43de939b7af1..d57b02fdd329 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -176,6 +176,8 @@ static bool reipl_fcp_clear; static bool reipl_ccw_clear; static bool reipl_eckd_clear; +static unsigned long os_info_flags; + static inline int __diag308(unsigned long subcode, unsigned long addr) { union register_pair r1; @@ -1939,6 +1941,20 @@ static void dump_reipl_run(struct shutdown_trigger *trigger) struct lowcore *abs_lc; unsigned int csum; + /* + * Set REIPL_CLEAR flag in os_info flags entry indicating + * 'clear' sysfs attribute has been set on the panicked system + * for specified reipl type. + * Always set for IPL_TYPE_NSS and IPL_TYPE_UNKNOWN. + */ + if ((reipl_type == IPL_TYPE_CCW && reipl_ccw_clear) || + (reipl_type == IPL_TYPE_ECKD && reipl_eckd_clear) || + (reipl_type == IPL_TYPE_FCP && reipl_fcp_clear) || + (reipl_type == IPL_TYPE_NVME && reipl_nvme_clear) || + reipl_type == IPL_TYPE_NSS || + reipl_type == IPL_TYPE_UNKNOWN) + os_info_flags |= OS_INFO_FLAG_REIPL_CLEAR; + os_info_entry_add(OS_INFO_FLAGS_ENTRY, &os_info_flags, sizeof(os_info_flags)); csum = (__force unsigned int) csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0); abs_lc = get_abs_lowcore(); |