Ingo Molnar aeb997b9f2 x86/fpu: Change fpu->fpregs_active from 'int' to 'char', add lazy switching comments ... Improve the memory layout of 'struct fpu': - change ->fpregs_active from 'int' to 'char' - it's just a single flag and modern x86 CPUs can do efficient byte accesses. - pack related fields closer to each other: often 'fpu->state' will not be touched, while the other fields will - so pack them into a group. Also add comments to each field, describing their purpose, and add some background information about lazy restores. Also fix an obsolete, lazy switching related comment in fpu_copy()'s description. Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.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: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@kernel.org>		2015-05-19 15:48:09 +02:00
..
bugs.c	x86/fpu: Make check_fpu() init ordering independent	2015-05-19 15:47:46 +02:00
core.c	x86/fpu: Change fpu->fpregs_active from 'int' to 'char', add lazy switching comments	2015-05-19 15:48:09 +02:00
init.c	x86/fpu: Harmonize FPU register state types	2015-05-19 15:48:09 +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: Harmonize FPU register state types	2015-05-19 15:48:09 +02:00
signal.c	x86/fpu: Harmonize FPU register state types	2015-05-19 15:48:09 +02:00
xstate.c	x86/fpu: Change fpu->fpregs_active from 'int' to 'char', add lazy switching comments	2015-05-19 15:48:09 +02:00