>
> My point is that
>
> qemu-version-A [-cpu whatever]
>
> should provide the same VM as
>
> qemu-version-B -machine pc-A [-cpu whatever]
>
> specifically if you leave out the cpu specification.
>
> So the compat machine could establish a feature mask (e.g. append some
> "-tsc_deadline"
On 2012-02-27 17:05, Liu, Jinsong wrote:
> Jan Kiszka wrote:
>> On 2012-01-07 19:23, Liu, Jinsong wrote:
>>> Jan Kiszka wrote:
On 2012-01-05 18:07, Liu, Jinsong wrote:
>> Sorry, it remains bogus to expose the tsc deadline timer feature
>> on machines < pc-1.1. That's just like we intro
Jan Kiszka wrote:
> On 2012-01-07 19:23, Liu, Jinsong wrote:
>> Jan Kiszka wrote:
>>> On 2012-01-05 18:07, Liu, Jinsong wrote:
> Sorry, it remains bogus to expose the tsc deadline timer feature
> on machines < pc-1.1. That's just like we introduced kvmclock
> only to pc-0.14 onward. The
On 2012-01-07 19:23, Liu, Jinsong wrote:
> Jan Kiszka wrote:
>> On 2012-01-05 18:07, Liu, Jinsong wrote:
Sorry, it remains bogus to expose the tsc deadline timer feature on
machines < pc-1.1. That's just like we introduced kvmclock only to
pc-0.14 onward. The reason is that guest OSe
Jan Kiszka wrote:
> On 2012-01-05 18:07, Liu, Jinsong wrote:
>>> Sorry, it remains bogus to expose the tsc deadline timer feature on
>>> machines < pc-1.1. That's just like we introduced kvmclock only to
>>> pc-0.14 onward. The reason is that guest OSes so far running on
>>> qemu-1.0 or older witho
On 2012-01-05 18:07, Liu, Jinsong wrote:
>> Sorry, it remains bogus to expose the tsc deadline timer feature on
>> machines < pc-1.1. That's just like we introduced kvmclock only to
>> pc-0.14 onward. The reason is that guest OSes so far running on
>> qemu-1.0 or older without deadline timer suppor
> This requires some logic change and then rewording:
>
> - enable TSC deadline timer support by default if in-kernel irqchip is
> used
> - disable it on user request via a cpu feature flag
Yes, the logic has been implemented by the former patch as:
+if (env->tsc_deadline_timer_enabled) {
On 2011-12-28 19:55, Liu, Jinsong wrote:
>>From 3a78adf8006ec6189bfe2f55f7ae213e75bf3815 Mon Sep 17 00:00:00 2001
> From: Liu Jinsong
> Date: Thu, 29 Dec 2011 05:28:12 +0800
> Subject: [PATCH 2/2] Expose tsc deadline timer cpuid to guest
>
> Depend on several factors:
> 1. Considering live migrat
