x86, fpu: drop_fpu() before restoring new state from sigframe

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No need to save the state with unlazy_fpu(), that is about to get overwritten
by the state from the signal frame. Instead use drop_fpu() and continue
to restore the new state.

Also fold the stop_fpu_preload() into drop_fpu().

Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Link: http://lkml.kernel.org/r/1345842782-24175-2-git-send-email-suresh.b.siddha@intel.com
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

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Suresh Siddha 2012-08-24 14:12:57 -07:00 • committed by H. Peter Anvin

parent 72a671ced6

commit e962591749

2 changed files with 4 additions and 11 deletions

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7

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

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8

arch/x86/kernel/xsave.c

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