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| author | Li RongQing <lirongqing@baidu.com> | 2026-09-22 12:00:13 +0800 |
|---|---|---|
| committer | Alex Williamson <alex@shazbot.org> | 2026-09-29 16:50:41 -0600 |
| commit | b30b52c2fb82e6d38ee2845a4d85e8254b44f3d8 (patch) | |
| tree | b92ace407dab4381612e648c5bf93b93b7d11a8f /tools/perf/scripts/python | |
| parent | 8b25b35840c15ecca14251f68079792531f1758f (diff) | |
| download | linux-next-b30b52c2fb82e6d38ee2845a4d85e8254b44f3d8.tar.gz linux-next-b30b52c2fb82e6d38ee2845a4d85e8254b44f3d8.zip | |
vfio/pci: Restore 8-byte ioeventfd support
Commit b44a06bd28f2 ("vfio/pci: Remove #ifdef iowrite64 and #ifdef
ioread64") inadvertently converted a conditional 8-byte rejection
into an unconditional one.
Originally, 'count == 8' was rejected only if iowrite64 was undefined
(#ifndef iowrite64). When iowrite64 became globally available via generic
fallbacks, this rejection became dead code, allowing 8-byte ioeventfds.
However, b44a06bd28f2 removed the #ifndef wrappers but left the nested
'if (count == 8) return -EINVAL;' intact, breaking all 8-byte
registrations.
Drop the unconditional check to restore 8-byte ioeventfd support,
matching the original intent.
Fixes: b44a06bd28f2 ("vfio/pci: Remove #ifdef iowrite64 and #ifdef ioread64")
Cc: stable@vger.kernel.org
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Link: https://lore.kernel.org/r/20260922040013.2188-1-lirongqing@baidu.com
Signed-off-by: Alex Williamson <alex@shazbot.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions