KVM: in-kernel LAPIC save and restore support

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This patch adds a new vcpu-based IOCTL to save and restore the local
apic registers for a single vcpu. The kernel only copies the apic page as
a whole, extraction of registers is left to userspace side. On restore, the
APIC timer is restarted from the initial count, this introduces a little
delay, but works fine.

Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Qing He <qing.he@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

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Eddie Dong 2007-09-06 12:22:56 +03:00 • committed by Avi Kivity

parent 6bf9e962d1

commit 96ad2cc613

4 changed files with 68 additions and 0 deletions

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1

drivers/kvm/irq.h

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46

drivers/kvm/kvm_main.c

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13

drivers/kvm/lapic.c

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8

include/linux/kvm.h

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