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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/Makefile | |
| parent | 79b520e87e1214cfa107bdc8528b5d6c055a8b82 (diff) | |
| download | linux-b75fe4e5b869f8dbebd36df64a7fcda0c5b318ed.tar.bz2 | |
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/Makefile')
| -rw-r--r-- | arch/x86/mm/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/mm/Makefile b/arch/x86/mm/Makefile index 9b5a9f59a478..dd313d035de7 100644 --- a/arch/x86/mm/Makefile +++ b/arch/x86/mm/Makefile @@ -4,6 +4,7 @@ obj-y := init.o init_$(BITS).o fault.o ioremap.o extable.o pageattr.o mmap.o \ # Make sure __phys_addr has no stackprotector nostackp := $(call cc-option, -fno-stack-protector) CFLAGS_physaddr.o := $(nostackp) +CFLAGS_init.o := $(nostackp) obj-$(CONFIG_SMP) += tlb.o |