From: Sebastian Tanase <sebastian.tanase@openwide.fr>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: kwolf@redhat.com, peter maydell <peter.maydell@linaro.org>,
aliguori@amazon.com, wenchaoqemu@gmail.com, quintela@redhat.com,
qemu-devel@nongnu.org, mst@redhat.com, stefanha@redhat.com,
armbru@redhat.com, lcapitulino@redhat.com, michael@walle.cc,
camille begue <camille.begue@openwide.fr>,
alex@alex.org.uk, crobinso@redhat.com, afaerber@suse.de,
rth@twiddle.net
Subject: Re: [Qemu-devel] [RFC PATCH V4 0/6] icount: Implement delay algorithm between guest and host clocks
Date: Tue, 22 Jul 2014 17:28:46 +0200 (CEST) [thread overview]
Message-ID: <690316639.20049989.1406042926107.JavaMail.root@openwide.fr> (raw)
In-Reply-To: <53CE81AA.2040609@redhat.com>
----- Mail original -----
> De: "Paolo Bonzini" <pbonzini@redhat.com>
> À: "Sebastian Tanase" <sebastian.tanase@openwide.fr>
> Cc: aliguori@amazon.com, afaerber@suse.de, rth@twiddle.net, "peter maydell" <peter.maydell@linaro.org>,
> michael@walle.cc, alex@alex.org.uk, stefanha@redhat.com, lcapitulino@redhat.com, crobinso@redhat.com,
> armbru@redhat.com, wenchaoqemu@gmail.com, quintela@redhat.com, kwolf@redhat.com, mst@redhat.com, "camille begue"
> <camille.begue@openwide.fr>, qemu-devel@nongnu.org
> Envoyé: Mardi 22 Juillet 2014 17:22:18
> Objet: Re: [RFC PATCH V4 0/6] icount: Implement delay algorithm between guest and host clocks
>
> Il 22/07/2014 17:17, Sebastian Tanase ha scritto:
> >> > That's a bug to fix indeed, then---it should count up from 0
> >> > without
> >> > icount, and icount shouldn't affect this. Thanks for
> >> > investigating
> >> > it.
> > Just to be sure I don't missunderstand, when you say "without
> > icount"
> > you refer to qemu_icount_bias (aka when the vcpu is inactive),
> > right?
>
> No, I mean without "-icount", i.e. when QEMU_CLOCK_VIRTUAL is just
> nanoseconds.
>
> Paolo
>
When not using "-icount" everything is fine because QEMU_CLOCK_VIRTUAL
is based on the real clock and the offset; qemu_icount_bias
doesn't come into play. So the vm_clock_warp_start fix is only for the case
where we use "-icount".
Sebastian
next prev parent reply other threads:[~2014-07-22 15:29 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-16 12:18 [Qemu-devel] [RFC PATCH V4 0/6] icount: Implement delay algorithm between guest and host clocks Sebastian Tanase
2014-07-16 12:18 ` [Qemu-devel] [RFC PATCH V4 1/6] icount: Add QemuOpts for icount Sebastian Tanase
2014-07-16 12:18 ` [Qemu-devel] [RFC PATCH V4 2/6] icount: Add align option to icount Sebastian Tanase
2014-07-16 12:18 ` [Qemu-devel] [RFC PATCH V4 3/6] icount: Make icount_time_shift available everywhere Sebastian Tanase
2014-07-16 12:18 ` [Qemu-devel] [RFC PATCH V4 4/6] cpu_exec: Add sleeping algorithm Sebastian Tanase
2014-07-16 12:18 ` [Qemu-devel] [RFC PATCH V4 5/6] cpu_exec: Print to console if the guest is late Sebastian Tanase
2014-07-16 12:18 ` [Qemu-devel] [RFC PATCH V4 6/6] monitor: Add drift info to 'info jit' Sebastian Tanase
2014-07-16 13:18 ` Paolo Bonzini
2014-07-22 9:58 ` Sebastian Tanase
2014-07-22 10:19 ` Paolo Bonzini
2014-07-22 13:55 ` Sebastian Tanase
2014-07-16 13:20 ` [Qemu-devel] [RFC PATCH V4 0/6] icount: Implement delay algorithm between guest and host clocks Paolo Bonzini
2014-07-22 14:02 ` Sebastian Tanase
2014-07-22 14:59 ` Paolo Bonzini
2014-07-22 15:17 ` Sebastian Tanase
2014-07-22 15:22 ` Paolo Bonzini
2014-07-22 15:28 ` Sebastian Tanase [this message]
2014-07-22 15:44 ` Paolo Bonzini
2014-07-16 13:40 ` Luiz Capitulino
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