linux_dsm_epyc7002/arch/x86/kernel/fpu
Ingo Molnar b6aa85558d x86/fpu: Split the state handling in fpu__drop()
Prepare fpu__drop() to use fpu->fpregs_active.

There are two distinct usecases for fpu__drop() in this context:
exit_thread() when called for 'current' in exit(), and when called
for another task in fork().

This patch does not change behavior, it only adds a couple of
debug checks and structures the code to make the ->fpregs_active
change more obviously correct.

All the complications will be removed later on.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rik van Riel <riel@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yu-cheng Yu <yu-cheng.yu@intel.com>
Link: http://lkml.kernel.org/r/20170923130016.21448-18-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-09-24 13:04:34 +02:00
..
bugs.c x86/fpu: Stop saving and restoring CR0.TS in fpu__init_check_bugs() 2016-11-01 07:47:53 +01:00
core.c x86/fpu: Split the state handling in fpu__drop() 2017-09-24 13:04:34 +02:00
init.c KVM: x86: Fix load damaged SSEx MXCSR register 2017-05-15 16:08:56 +02:00
Makefile x86/fpu: Factor out the FPU regset code into fpu/regset.c 2015-05-19 15:48:09 +02:00
regset.c x86/fpu: Flip the parameter order in copy_*_to_xstate() 2017-09-24 13:04:33 +02:00
signal.c x86/fpu: Simplify fpu->fpregs_active use 2017-09-24 13:04:33 +02:00
xstate.c x86/fpu: Flip the parameter order in copy_*_to_xstate() 2017-09-24 13:04:33 +02:00