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| author | Eric Farman <farman@linux.ibm.com> | 2026-07-28 05:30:17 +0200 |
|---|---|---|
| committer | Christian Borntraeger <borntraeger@linux.ibm.com> | 2026-07-30 19:50:19 +0200 |
| commit | 4f6fdc6e1a7fbfa36b945af33c65a417948feac0 (patch) | |
| tree | e589f63bf892fd9b3bf343816a7c7c58ed7b75c5 /tools/perf/scripts/python | |
| parent | 565bef268d75bf7df665bce6923a88cd0eb74592 (diff) | |
s390/vfio_ccw: Calculate idal length based on idaw type
Sashiko pointed out that get_guest_idal() unconditionally calculates
the length of the IDAL presuming everything is a Format-2 IDAW.
The output of vfio-ccw is always Format-2, but the input can be either
Format-1 (31-bit addresses) or Format-2 (64-bit addresses). As a result,
the size of the guest IDAL may be incorrect and should be trimmed down.
Reported-by: sashiko-bot <sashiko-bot@kernel.org>
Link: https://lore.kernel.org/r/20260720203400.7328E1F000E9@smtp.kernel.org/
Fixes: 1b676fe3d9d3 ("vfio/ccw: handle a guest Format-1 IDAL")
Cc: stable@vger.kernel.org
Reviewed-by: Matthew Rosato <mjrosato@linux.ibm.com>
Signed-off-by: Eric Farman <farman@linux.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions