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191216b928
linux/arch/x86/xen
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Jeremy Fitzhardinge 191216b928 xen: mask XSAVE from cpuid 
Xen leaves XSAVE set in cpuid, but doesn't allow cr4.OSXSAVE
to be set.  This confuses the kernel and it ends up crashing on
an xsetbv instruction.

At boot time, try to set cr4.OSXSAVE, and mask XSAVE out of
cpuid it we can't.  This will produce a spurious error from Xen,
but allows us to support XSAVE if/when Xen does.

This also factors out the cpuid mask decisions to boot time.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
2009-04-08 11:51:46 -07:00
..
debugfs.c xen: add debugfs support 2008-08-21 13:52:58 +02:00
debugfs.h xen: add debugfs support 2008-08-21 13:52:58 +02:00
enlighten.c xen: mask XSAVE from cpuid 2009-04-08 11:51:46 -07:00
grant-table.c xen: make grant table arch portable 2008-04-24 23:57:32 +02:00
irq.c xen: use our own eventchannel->irq path 2009-02-09 12:17:30 +01:00
Kconfig x86: remove the Voyager 32-bit subarch 2009-02-23 00:54:01 +01:00
Makefile xen: make direct versions of irq_enable/disable/save/restore to common code 2009-02-04 16:59:04 -08:00
mmu.c xen: split construction of p2m mfn tables from registration 2009-04-08 11:51:44 -07:00
mmu.h xen: separate p2m allocation from setting 2009-04-08 11:51:44 -07:00
multicalls.c x86, xen: do multicall callbacks with interrupts disabled 2009-02-16 08:56:41 +01:00
multicalls.h Merge commit 'v2.6.29-rc4' into core/percpu 2009-02-09 14:58:11 +01:00
setup.c xen: whitespace/checkpatch cleanup 2008-12-16 21:05:01 +01:00
smp.c NULL noise: arch/x86/xen/smp.c 2009-04-08 11:51:45 -07:00
spinlock.c genirq: revert dynarray 2008-10-16 16:53:15 +02:00
suspend.c x86, xen: fix hardirq.h merge fallout 2009-01-23 11:09:15 +01:00
time.c Merge branch 'cputime' of git://git390.osdl.marist.edu/pub/scm/linux-2.6 2009-01-03 11:56:24 -08:00
vdso.h i386: move xen 2007-10-11 11:16:51 +02:00
xen-asm_32.S x86: style cleanups for xen assemblies 2009-02-05 20:25:41 +01:00
xen-asm_64.S x86: style cleanups for xen assemblies 2009-02-05 20:25:41 +01:00
xen-asm.h xen: make direct versions of irq_enable/disable/save/restore to common code 2009-02-04 16:59:04 -08:00
xen-asm.S x86: style cleanups for xen assemblies 2009-02-05 20:25:41 +01:00
xen-head.S x86: use _types.h headers in asm where available 2009-02-13 11:35:01 -08:00
xen-ops.h xen: setup percpu data pointers 2009-02-04 16:59:02 -08:00