[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Qemu-devel] -rtc clock=vm with -icount 1, sleep=off introduces unex

From: Pavel Dovgalyuk
Subject: Re: [Qemu-devel] -rtc clock=vm with -icount 1, sleep=off introduces unexpected delays in device interactions
Date: Tue, 14 Mar 2017 15:18:22 +0300

> From: Paolo Bonzini [mailto:address@hidden
> On 14/03/2017 13:10, Pavel Dovgalyuk wrote:
> > This is not the same.
> > BQL helped in making execution deterministic - no io and timer
> > callbacks were performed while CPU is executing.
> > Now iothread and CPU thread work simultaneously and timers can't
> > query virtual time correctly, because (if we could query number of executed
> > instructions) it may have different values on different runs.
> >
> > I guess you'll have to bring kicking CPU back on iothread invocation
> > to make execution deterministic in icount mode.
> Timers are fixed by my patch.  I/O should also work if its effects are
> only apparent at given QEMU_CLOCK_VIRTUAL values.

Can you point me on that patch?

Pavel Dovgalyuk

reply via email to

[Prev in Thread] Current Thread [Next in Thread]