kvm: vmx: hook preemption timer support

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Hook the VMX preemption timer to the "hv timer" functionality added
by the previous patch.  This includes: checking if the feature is
supported, if the feature is broken on the CPU, the hooks to
setup/clean the VMX preemption timer, arming the timer on vmentry
and handling the vmexit.

A module parameter states if the VMX preemption timer should be
utilized.

Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
[Move hv_deadline_tsc to struct vcpu_vmx, use -1 as the "unset" value.
 Put all VMX bits here.  Enable it by default #yolo. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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This commit is contained in:

Yunhong Jiang 2016-06-13 14:19:59 -07:00 • committed by Paolo Bonzini

parent bc22512bb2

commit 64672c95ea

3 changed files with 183 additions and 2 deletions

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2

arch/x86/include/asm/kvm_host.h

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180

arch/x86/kvm/vmx.c

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3

arch/x86/kvm/x86.c

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