lkml.org 
[lkml]   [2023]   [Oct]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH v3] KVM: x86: Use fast path for Xen timer delivery
From
On Sat, 30 Sep 2023 14:58:35 +0100, David Woodhouse wrote:
> Most of the time there's no need to kick the vCPU and deliver the timer
> event through kvm_xen_inject_timer_irqs(). Use kvm_xen_set_evtchn_fast()
> directly from the timer callback, and only fall back to the slow path
> when it's necessary to do so.
>
> This gives a significant improvement in timer latency testing (using
> nanosleep() for various periods and then measuring the actual time
> elapsed).
>
> [...]

Applied to kvm-x86 xen, thanks!

[1/1] KVM: x86: Use fast path for Xen timer delivery
https://github.com/kvm-x86/linux/commit/77c9b9dea4fb

--
https://github.com/kvm-x86/linux/tree/next

\
 
 \ /
  Last update: 2023-10-05 03:32    [W:0.109 / U:0.072 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site