tree d7fe46fa037ee060ce9fced2ccc5014d5552f6ea
parent 1739f09e33d8f66bf48ddbc3eca615574da6c4f6
author Linus Torvalds <torvalds@linux-foundation.org> 1389496552 -0800
committer H. Peter Anvin <hpa@zytor.com> 1389496552 -0800

x86, fpu, amd: Clear exceptions in AMD FXSAVE workaround

Before we do an EMMS in the AMD FXSAVE information leak workaround we
need to clear any pending exceptions, otherwise we trap with a
floating-point exception inside this code.

Reported-by: halfdog <me@halfdog.net>
Tested-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/CA%2B55aFxQnY_PCG_n4=0w-VG=YLXL-yr7oMxyy0WU2gCBAf3ydg@mail.gmail.com
Signed-off-by: H. Peter Anvin <hpa@zytor.com>