KVM: Initialize fpu state in preemptible context

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init_fpu() (which is indirectly called by the fpu switching code) assumes
it is in process context.  Rather than makeing init_fpu() use an atomic
allocation, which can cause a task to be killed, make sure the fpu is
already initialized when we enter the run loop.

KVM-Stable-Tag.
Reported-and-tested-by: Kirill A. Shutemov <kas@openvz.org>
Acked-by: Pekka Enberg <penberg@kernel.org>
Reviewed-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

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This commit is contained in:

Avi Kivity 2011-01-11 12:15:54 +02:00

parent 444e863d13

commit e5c3014282

2 changed files with 4 additions and 0 deletions

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arch/x86/kernel/i387.c

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arch/x86/kvm/x86.c

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