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| author |   Cornelia Huck <cornelia.huck@de.ibm.com> | 2006-07-12 16:40:19 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-07-12 16:40:19 +0200 |
| commit | 7e560814de1972e1bfc780616841d7a0032ca467 (patch) | |
| tree | f8d544454b54a0167f757cc945a3e29165f211f8 /arch | |
| parent | [S390] xpram module parameter parsing. (diff) | |
| download | linux-dev-7e560814de1972e1bfc780616841d7a0032ca467.tar.xz linux-dev-7e560814de1972e1bfc780616841d7a0032ca467.zip | |
[S390] path grouping and path verifications fixes.
1. Multipath devices for which SetPGID is not supported are not handled well.
Use NOP ccws for path verification (sans path grouping) when SetPGID is not
supported.
2. Check for PGIDs already set with SensePGID on _all_ paths (not just the
first one) and try to find a common one. Moan if no common PGID can be
found (and use NOP verification). If no PGIDs have been set, use the css
global PGID (as before). (Rationale: SetPGID will get a command reject if
the PGID it tries to set does not match the already set PGID.)
3. Immediately before reboot, issue RESET CHANNEL PATH (rcp) on all chpids. This
will remove the old PGIDs. rcp will generate solicited CRWs which can be
savely ignored by the machine check handler (all other actions create
unsolicited CRWs).
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kernel/machine_kexec.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c index fbde6a915264..60b1ea9f946b 100644 --- a/arch/s390/kernel/machine_kexec.c +++ b/arch/s390/kernel/machine_kexec.c @@ -63,6 +63,7 @@ NORET_TYPE void machine_kexec(struct kimage *image) { clear_all_subchannels(); + cio_reset_channel_paths(); /* Disable lowcore protection */ ctl_clear_bit(0,28); |