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| author | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2025-12-19 11:51:22 +0100 |
|---|---|---|
| committer | Thomas Hellström <thomas.hellstrom@linux.intel.com> | 2025-12-19 11:51:22 +0100 |
| commit | 5add3c3c280a35f7e258e9cef7607db5a2e56fdc (patch) | |
| tree | 22eca9a4a1003a64933980bf76da2fbe8a74f759 /include/uapi/linux/rseq.h | |
| parent | c7b83a916d62c4d4447d7edf0bc5e06dc2afbdf8 (diff) | |
| parent | 8f0b4cce4481fb22653697cced8d0d04027cb1e8 (diff) | |
Merge drm/drm-next into drm-xe-next
Backmerging to bring in 6.19-rc1. An important upstream bugfix and
to help unblock PTL CI.
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Diffstat (limited to 'include/uapi/linux/rseq.h')
| -rw-r--r-- | include/uapi/linux/rseq.h | 21 |
1 files changed, 7 insertions, 14 deletions
diff --git a/include/uapi/linux/rseq.h b/include/uapi/linux/rseq.h index c233aae5eac9..1b76d508400c 100644 --- a/include/uapi/linux/rseq.h +++ b/include/uapi/linux/rseq.h @@ -114,20 +114,13 @@ struct rseq { /* * Restartable sequences flags field. * - * This field should only be updated by the thread which - * registered this data structure. Read by the kernel. - * Mainly used for single-stepping through rseq critical sections - * with debuggers. - * - * - RSEQ_CS_FLAG_NO_RESTART_ON_PREEMPT - * Inhibit instruction sequence block restart on preemption - * for this thread. - * - RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL - * Inhibit instruction sequence block restart on signal - * delivery for this thread. - * - RSEQ_CS_FLAG_NO_RESTART_ON_MIGRATE - * Inhibit instruction sequence block restart on migration for - * this thread. + * This field was initially intended to allow event masking for + * single-stepping through rseq critical sections with debuggers. + * The kernel does not support this anymore and the relevant bits + * are checked for being always false: + * - RSEQ_CS_FLAG_NO_RESTART_ON_PREEMPT + * - RSEQ_CS_FLAG_NO_RESTART_ON_SIGNAL + * - RSEQ_CS_FLAG_NO_RESTART_ON_MIGRATE */ __u32 flags; |