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| author |   Thomas Gleixner <tglx@linutronix.de> | 2021-06-23 14:01:42 +0200 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2021-06-23 17:49:47 +0200 |
| commit | eb6f51723f03c9a1c098ed196a31a03e626b9fb6 (patch) | |
| tree | 868eeed8377fe03e732162a4cc2c71d0b3807d4f /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | x86/fpu: Clean up fpregs_set() (diff) | |
| download | wireguard-linux-eb6f51723f03c9a1c098ed196a31a03e626b9fb6.tar.xz wireguard-linux-eb6f51723f03c9a1c098ed196a31a03e626b9fb6.zip | |
x86/fpu: Make copy_xstate_to_kernel() usable for [x]fpregs_get()
When xsave with init state optimization is used then a component's state
in the task's xsave buffer can be stale when the corresponding feature bit
is not set.
fpregs_get() and xfpregs_get() invoke fpstate_sanitize_xstate() to update
the task's xsave buffer before retrieving the FX or FP state. That's just
duplicated code as copy_xstate_to_kernel() already handles this correctly.
Add a copy mode argument to the function which allows to restrict the state
copy to the FP and SSE features.
Also rename the function to copy_xstate_to_uabi_buf() so the name reflects
what it is doing.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Reviewed-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20210623121452.805327286@linutronix.de
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions