linux/arch/x86/kernel/fpu
Fenghua Yu a1141e0b5c x86/fpu/xstate: Define and use 'fpu_user_xstate_size'
The kernel xstate area can be in standard or compacted format;
it is always in standard format for user mode. When XSAVES is
enabled, the kernel uses the compacted format and it is necessary
to use a separate fpu_user_xstate_size for signal/ptrace frames.

Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
[ Rebased the patch and cleaned up the naming. ]
Signed-off-by: Yu-cheng Yu <yu-cheng.yu@intel.com>
Reviewed-by: Dave Hansen <dave.hansen@intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Ravi V. Shankar <ravi.v.shankar@intel.com>
Cc: Sai Praneeth Prakhya <sai.praneeth.prakhya@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/8756ec34dabddfc727cda5743195eb81e8caf91c.1463760376.git.yu-cheng.yu@intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-06-18 10:10:18 +02:00
..
bugs.c x86/fpu: Remove check_fpu() indirection 2016-04-13 11:37:43 +02:00
core.c x86/fpu: Add tracepoints to dump FPU state at key points 2016-06-08 13:33:33 +02:00
init.c x86/fpu/xstate: Define and use 'fpu_user_xstate_size' 2016-06-18 10:10:18 +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/regset: Replace static_cpu_has() usage with boot_cpu_has() 2016-04-13 11:37:42 +02:00
signal.c x86/fpu/xstate: Define and use 'fpu_user_xstate_size' 2016-06-18 10:10:18 +02:00
xstate.c x86/fpu/xstate: Define and use 'fpu_user_xstate_size' 2016-06-18 10:10:18 +02:00