From: Eduardo Habkost <ehabkost@redhat.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
qemu-devel@nongnu.org, kvm@vger.kernel.org,
Richard Henderson <rth@twiddle.net>
Subject: Re: [PATCH v2 2/2] i386/cpu: make -cpu host support monitor/mwait
Date: Wed, 13 Jun 2018 18:24:47 -0300 [thread overview]
Message-ID: <20180613212447.GH24764@localhost.localdomain> (raw)
In-Reply-To: <20180612184616.90838-3-mst@redhat.com>
On Tue, Jun 12, 2018 at 09:47:13PM +0300, Michael S. Tsirkin wrote:
> When guest CPU PM is enabled, and with -cpu host, expose the host CPU
> MWAIT leaf in the CPUID so guest can make good PM decisions.
>
> Note: the result is 100% CPU utilization reported by host as host
> no longer knows that the CPU is halted.
>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
--
Eduardo
WARNING: multiple messages have this Message-ID (diff)
From: Eduardo Habkost <ehabkost@redhat.com>
To: "Michael S. Tsirkin" <mst@redhat.com>
Cc: qemu-devel@nongnu.org, Paolo Bonzini <pbonzini@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
kvm@vger.kernel.org, Richard Henderson <rth@twiddle.net>
Subject: Re: [Qemu-devel] [PATCH v2 2/2] i386/cpu: make -cpu host support monitor/mwait
Date: Wed, 13 Jun 2018 18:24:47 -0300 [thread overview]
Message-ID: <20180613212447.GH24764@localhost.localdomain> (raw)
In-Reply-To: <20180612184616.90838-3-mst@redhat.com>
On Tue, Jun 12, 2018 at 09:47:13PM +0300, Michael S. Tsirkin wrote:
> When guest CPU PM is enabled, and with -cpu host, expose the host CPU
> MWAIT leaf in the CPUID so guest can make good PM decisions.
>
> Note: the result is 100% CPU utilization reported by host as host
> no longer knows that the CPU is halted.
>
> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
--
Eduardo
next prev parent reply other threads:[~2018-06-13 21:24 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-06-12 18:47 [PATCH v2 0/2] kvm: x86 CPU power management Michael S. Tsirkin
2018-06-12 18:47 ` [Qemu-devel] " Michael S. Tsirkin
2018-06-12 18:47 ` [PATCH v2 1/2] kvm: support -realtime cpu-pm=on|off Michael S. Tsirkin
2018-06-12 18:47 ` [Qemu-devel] " Michael S. Tsirkin
2018-06-13 20:35 ` Eduardo Habkost
2018-06-13 20:35 ` [Qemu-devel] " Eduardo Habkost
2018-06-13 21:00 ` Eduardo Habkost
2018-06-13 21:00 ` [Qemu-devel] " Eduardo Habkost
2018-06-13 21:53 ` Michael S. Tsirkin
2018-06-13 21:53 ` [Qemu-devel] " Michael S. Tsirkin
2018-06-12 18:47 ` [PATCH v2 2/2] i386/cpu: make -cpu host support monitor/mwait Michael S. Tsirkin
2018-06-12 18:47 ` [Qemu-devel] " Michael S. Tsirkin
2018-06-13 21:24 ` Eduardo Habkost [this message]
2018-06-13 21:24 ` Eduardo Habkost
2018-06-12 19:18 ` [PATCH v2 0/2] kvm: x86 CPU power management no-reply
2018-06-12 19:18 ` [Qemu-devel] " no-reply
2018-06-12 20:29 ` Michael S. Tsirkin
2018-06-12 20:29 ` [Qemu-devel] " Michael S. Tsirkin
2018-06-13 22:34 ` Marcelo Tosatti
2018-06-13 22:34 ` [Qemu-devel] " Marcelo Tosatti
2018-06-13 23:37 ` Michael S. Tsirkin
2018-06-13 23:37 ` [Qemu-devel] " Michael S. Tsirkin
2018-06-15 18:32 ` Marcelo Tosatti
2018-06-15 18:32 ` [Qemu-devel] " Marcelo Tosatti
2018-06-15 21:53 ` Michael S. Tsirkin
2018-06-15 21:53 ` [Qemu-devel] " Michael S. Tsirkin
2018-06-14 8:18 ` Daniel P. Berrangé
2018-06-14 8:18 ` [Qemu-devel] " Daniel P. Berrangé
2018-06-14 15:40 ` Paolo Bonzini
2018-06-14 15:40 ` [Qemu-devel] " Paolo Bonzini
2018-06-14 15:44 ` Daniel P. Berrangé
2018-06-14 15:44 ` [Qemu-devel] " Daniel P. Berrangé
2018-06-14 20:32 ` Paolo Bonzini
2018-06-14 20:32 ` [Qemu-devel] " Paolo Bonzini
2018-06-15 14:15 ` Michael S. Tsirkin
2018-06-15 14:15 ` [Qemu-devel] " Michael S. Tsirkin
2018-06-14 16:53 ` Eduardo Habkost
2018-06-14 16:53 ` [Qemu-devel] " Eduardo Habkost
2018-06-14 21:21 ` Paolo Bonzini
2018-06-14 21:21 ` [Qemu-devel] " Paolo Bonzini
2018-06-15 13:52 ` Michael S. Tsirkin
2018-06-15 13:52 ` [Qemu-devel] " Michael S. Tsirkin
2018-06-22 13:06 ` Kashyap Chamarthy
2018-06-22 13:06 ` [Qemu-devel] " Kashyap Chamarthy
2018-06-22 19:18 ` Michael S. Tsirkin
2018-06-22 19:18 ` [Qemu-devel] " Michael S. Tsirkin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180613212447.GH24764@localhost.localdomain \
--to=ehabkost@redhat.com \
--cc=kvm@vger.kernel.org \
--cc=mst@redhat.com \
--cc=mtosatti@redhat.com \
--cc=pbonzini@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=rth@twiddle.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.