x86/fpu: Introduce task_disable_lazy_fpu_restore() helper

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Currently there are a few magic assignments sprinkled through the
code that disable lazy FPU state restoring, some more effective than
others, and all equally mystifying.

It would be easier to have a helper to explicitly disable lazy
FPU state restoring for a task.

Signed-off-by: Rik van Riel <riel@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Link: http://lkml.kernel.org/r/1423252925-14451-6-git-send-email-riel@redhat.com
Signed-off-by: Borislav Petkov <bp@suse.de>

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Rik van Riel 2015-02-06 15:02:02 -05:00 • committed by Borislav Petkov

parent 1c927eea4c

commit 33e03dedd7

1 changed files with 10 additions and 0 deletions

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arch/x86/include/asm/fpu-internal.h

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