diff options
| author | Attila Fülöp <[email protected]> | 2022-02-09 21:50:10 +0100 |
|---|---|---|
| committer | Tony Hutter <[email protected]> | 2022-02-16 17:58:55 -0800 |
| commit | 3b52ccd7d7f5e59a1306b7e904e0e244248f94d9 (patch) | |
| tree | bbe0b80669828647cc731c5f1ac3dd5eadb9e952 /configure.ac | |
| parent | bb271d67e85ad90cda640e382daf3a15f6e82d9e (diff) | |
Linux 5.16 compat: don't use XSTATE_XSAVE to save FPU state
Linux 5.16 moved XSTATE_XSAVE and XSTATE_XRESTORE out of our reach,
so add our own XSAVE{,OPT,S} code and use it for Linux 5.16.
Please note that this differs from previous behavior in that it
won't handle exceptions created by XSAVE an XRSTOR. This is sensible
for three reasons.
- Exceptions during XSAVE and XRSTOR can only occur if the feature
is not supported or enabled or the memory operand isn't aligned
on a 64 byte boundary. If this happens something else went
terribly wrong, and it may be better to stop execution.
- Previously we just printed a warning and didn't handle the fault,
this is arguable for the above reason.
- All other *SAVE instruction also don't handle exceptions, so this
at least aligns behavior.
Finally add a test to catch such a regression in the future.
Reviewed-by: Tony Hutter <[email protected]>
Reviewed-by: Brian Behlendorf <[email protected]>
Signed-off-by: Attila Fülöp <[email protected]>
Closes #13042
Closes #13059
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index ebc7b276a..2671434af 100644 --- a/configure.ac +++ b/configure.ac @@ -383,6 +383,7 @@ AC_CONFIG_FILES([ tests/zfs-tests/tests/functional/rootpool/Makefile tests/zfs-tests/tests/functional/rsend/Makefile tests/zfs-tests/tests/functional/scrub_mirror/Makefile + tests/zfs-tests/tests/functional/simd/Makefile tests/zfs-tests/tests/functional/slog/Makefile tests/zfs-tests/tests/functional/snapshot/Makefile tests/zfs-tests/tests/functional/snapused/Makefile |