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| author |   Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-09-21 13:34:06 -0700 |
|---|---|---|
| committer | Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> | 2009-09-21 13:49:43 -0700 |
| commit | b75fe4e5b869f8dbebd36df64a7fcda0c5b318ed (patch) | |
| tree | cba533110e8514184ddc63ab2ea37c38dc8a1861 /arch/x86/mm/init.c | |
| parent | Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs (diff) | |
| download | linux-dev-b75fe4e5b869f8dbebd36df64a7fcda0c5b318ed.tar.xz linux-dev-b75fe4e5b869f8dbebd36df64a7fcda0c5b318ed.zip | |
xen: check EFER for NX before setting up GDT mapping
x86-64 assumes NX is available by default, so we need to
explicitly check for it before using NX. Some first-generation
Intel x86-64 processors didn't support NX, and even recent systems
allow it to be disabled in BIOS.
[ Impact: prevent Xen crash on NX-less 64-bit machines ]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Stable Kernel <stable@kernel.org>
Diffstat (limited to 'arch/x86/mm/init.c')
0 files changed, 0 insertions, 0 deletions