KVM: VMX: add module parameter to avoid trapping HLT instructions (v5)

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In certain use-cases, we want to allocate guests fixed time slices where idle
guest cycles leave the machine idling.  There are many approaches to achieve
this but the most direct is to simply avoid trapping the HLT instruction which
lets the guest directly execute the instruction putting the processor to sleep.

Introduce this as a module-level option for kvm-vmx.ko since if you do this
for one guest, you probably want to do it for all.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Avi Kivity <avi@redhat.com>

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Anthony Liguori 2010-12-06 10:53:38 -06:00 • committed by Avi Kivity

parent 38e5e92fe8

commit 443381a828

2 changed files with 29 additions and 2 deletions

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6

arch/x86/include/asm/vmx.h

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25

arch/x86/kvm/vmx.c

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