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[PATCH] KVM: cpu hotplug support

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On hotplug, we execute the hardware extension enable sequence.  On unplug, we
decache any vcpus that last ran on the exiting cpu, and execute the hardware
extension disable sequence.

Signed-off-by: Avi Kivity <avi@qumranet.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Avi Kivity
2007-02-12 00:54:47 -08:00
committed by Linus Torvalds
parent 8d0be2b3bf
commit 774c47f1d7
4 changed files with 77 additions and 1 deletions
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8
drivers/kvm/vmx.c
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@ -250,6 +250,11 @@ static void vmx_vcpu_put(struct kvm_vcpu *vcpu)
put_cpu();
}
static void vmx_vcpu_decache(struct kvm_vcpu *vcpu)
{
vcpu_clear(vcpu);
}
static unsigned long vmx_get_rflags(struct kvm_vcpu *vcpu)
{
return vmcs_readl(GUEST_RFLAGS);
@ -509,7 +514,7 @@ static __init int vmx_disabled_by_bios(void)
return (msr & 5) == 1; /* locked but not enabled */
}
static __init void hardware_enable(void *garbage)
static void hardware_enable(void *garbage)
{
int cpu = raw_smp_processor_id();
u64 phys_addr = __pa(per_cpu(vmxarea, cpu));
@ -2023,6 +2028,7 @@ static struct kvm_arch_ops vmx_arch_ops = {
.vcpu_load = vmx_vcpu_load,
.vcpu_put = vmx_vcpu_put,
.vcpu_decache = vmx_vcpu_decache,
.set_guest_debug = set_guest_debug,
.get_msr = vmx_get_msr,