linux/arch/x86/kernel/fpu
Borislav Petkov b2381acd3f x86/fpu: Mask out the invalid MXCSR bits properly
This is a fix for the fix (yeah, /facepalm).

The correct mask to use is not the negation of the MXCSR_MASK but the
actual mask which contains the supported bits in the MXCSR register.

Reported and debugged by Ville Syrjälä <ville.syrjala@linux.intel.com>

Fixes: d298b03506 ("x86/fpu: Restore the masking out of reserved MXCSR bits")
Signed-off-by: Borislav Petkov <bp@suse.de>
Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Tested-by: Ser Olmy <ser.olmy@protonmail.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/YWgYIYXLriayyezv@intel.com
2021-10-16 12:37:50 +02:00
..
bugs.c License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
core.c x86/fpu: Mark init_fpstate __ro_after_init 2021-06-23 19:58:45 +02:00
init.c x86/fpu: Get rid of fpu__get_supported_xfeatures_mask() 2021-06-23 17:49:46 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
regset.c x86/fpu: Hook up PKRU into ptrace() 2021-06-23 19:44:24 +02:00
signal.c x86/fpu: Mask out the invalid MXCSR bits properly 2021-10-16 12:37:50 +02:00
xstate.c x86/fpu/xstate: Clear xstate header in copy_xstate_to_uabi_buf() again 2021-06-24 17:19:51 +02:00