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| author | Cornelia Huck <cornelia.huck@de.ibm.com> | 2013-02-07 02:20:51 +0000 |
|---|---|---|
| committer | Anthony Liguori <aliguori@us.ibm.com> | 2013-02-13 11:56:02 -0600 |
| commit | 91b0a8f33419573c1d741e49559bfb666fd8b1f0 (patch) | |
| tree | 7b567f0af4b64b3f2274719b008f21f5f4b7ec7d /hw/s390x/css.c | |
| parent | bd9a8d852c857fd19c4626acaac1d4979f816f3a (diff) | |
| download | qemu-91b0a8f33419573c1d741e49559bfb666fd8b1f0.tar.gz | |
s390: Fix handling of iscs.
There are two ways to express an interruption subclass:
- As a bitmask, as used in cr6.
- As a number, as used in the I/O interruption word.
Unfortunately, we have treated to I/O interruption word as if it
contained the bitmask as well, which went unnoticed so far as
- (queued-for-next) kvm made the same mistake, and
- Linux guest kernels don't check the isc value in the I/O interruption
word for subchannel interrupts.
Make sure that we treat the I/O interruption word correctly.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'hw/s390x/css.c')
| -rw-r--r-- | hw/s390x/css.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/hw/s390x/css.c b/hw/s390x/css.c index 3244201fc7..85f6f22a7f 100644 --- a/hw/s390x/css.c +++ b/hw/s390x/css.c @@ -87,7 +87,7 @@ static void css_inject_io_interrupt(SubchDev *sch) css_build_subchannel_id(sch), sch->schid, sch->curr_status.pmcw.intparm, - (0x80 >> isc) << 24); + isc << 27); } void css_conditional_io_interrupt(SubchDev *sch) @@ -111,7 +111,7 @@ void css_conditional_io_interrupt(SubchDev *sch) css_build_subchannel_id(sch), sch->schid, sch->curr_status.pmcw.intparm, - (0x80 >> isc) << 24); + isc << 27); } } |