Yu-cheng Yu eeedf15336 x86/fpu: Introduce copy_supervisor_to_kernel() ... The XSAVES instruction takes a mask and saves only the features specified in that mask. The kernel normally specifies that all features be saved. XSAVES also unconditionally uses the "compacted format" which means that all specified features are saved next to each other in memory. If a feature is removed from the mask, all the features after it will "move up" into earlier locations in the buffer. Introduce copy_supervisor_to_kernel(), which saves only supervisor states and then moves those states into the standard location where they are normally found. Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Link: https://lkml.kernel.org/r/20200512145444.15483-9-yu-cheng.yu@intel.com		2020-05-16 11:24:14 +02:00
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api.h	x86/fpu: Defer FPU state load until return to userspace	2019-04-12 19:34:47 +02:00
internal.h	x86/fpu/xstate: Update copy_kernel_to_xregs_err() for supervisor states	2020-05-14 16:46:43 +02:00
regset.h	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
signal.h	x86/fpu: Remove fpu->initialized usage in __fpu__restore_sig()	2019-04-09 19:27:29 +02:00
types.h	x86/fpu: Remove fpu->initialized	2019-04-10 15:42:40 +02:00
xstate.h	x86/fpu: Introduce copy_supervisor_to_kernel()	2020-05-16 11:24:14 +02:00