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SubjectRe: [PATCH v2 0/4] x86/kvm/hyper-v: Implement Direct Mode for synthetic timers
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On 26/11/18 16:47, Vitaly Kuznetsov wrote:
> Changes since v1:
> - avoid open-coding stimer_mark_pending() in kvm_hv_notify_acked_sint() and
> kvm_hv_synic_send_eoi [Paolo Bonzini]
>
> Turns out Hyper-V on KVM (as of 2016) will only use synthetic timers
> if direct mode is available. With direct mode we notify the guest by
> asserting APIC irq instead of sending a SynIC message.
>
> Qemu and kvm-unit-test patches for testing this series can be found in
> v1 submission:
> https://lkml.org/lkml/2018/11/13/972
>
> Vitaly Kuznetsov (4):
> x86/hyper-v: move synic/stimer control structures definitions to
> hyperv-tlfs.h
> x86/kvm/hyper-v: use stimer config definition from hyperv-tlfs.h
> x86/kvm/hyper-v: direct mode for synthetic timers
> x86/kvm/hyper-v: avoid open-coding stimer_mark_pending() in
> kvm_hv_notify_acked_sint()
>
> arch/x86/include/asm/hyperv-tlfs.h | 73 ++++++++++++++++++--
> arch/x86/include/asm/kvm_host.h | 2 +-
> arch/x86/kvm/hyperv.c | 106 +++++++++++++++++++++--------
> arch/x86/kvm/trace.h | 10 +--
> arch/x86/kvm/x86.c | 1 +
> drivers/hv/hv.c | 2 +-
> drivers/hv/hyperv_vmbus.h | 68 ------------------
> include/uapi/linux/kvm.h | 1 +
> 8 files changed, 154 insertions(+), 109 deletions(-)
>

Queued, thanks.

Paolo

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