From: Avi Kivity <avi@redhat.com>
To: Alexander Graf <agraf@suse.de>
Cc: Marcelo Tosatti <mtosatti@redhat.com>,
kvm@vger.kernel.org, Jan Kiszka <jan.kiszka@siemens.com>,
Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>,
Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>,
qemu-devel@nongnu.org, Suzuki Poulose <suzuki@in.ibm.com>
Subject: Re: [Qemu-devel] [PATCH 3/3] QEMU kvm/i386 : Adding KICK_VCPU capability support in i386 target.
Date: Mon, 19 Dec 2011 15:59:06 +0200 [thread overview]
Message-ID: <4EEF432A.3030905@redhat.com> (raw)
In-Reply-To: <C484DB23-5960-42B3-B1DB-86A0A86A6382@suse.de>
On 12/19/2011 03:54 PM, Alexander Graf wrote:
> On 04.12.2011, at 19:26, Raghavendra K T wrote:
>
> > Extend the KVM Hypervisor to enable KICK_VCPU feature that allows
> > a vcpu to kick the halted vcpu to continue with execution in PV ticket
> > spinlock.
> >
> > Signed-off-by: Srivatsa Vaddagiri <vatsa@linux.vnet.ibm.com>
> > Signed-off-by: Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>
> > ---
> > diff --git a/target-i386/kvm.c b/target-i386/kvm.c
> > index 5bfc21f..69bce21 100644
> > --- a/target-i386/kvm.c
> > +++ b/target-i386/kvm.c
> > @@ -97,6 +97,7 @@ struct kvm_para_features {
> > { KVM_CAP_NOP_IO_DELAY, KVM_FEATURE_NOP_IO_DELAY },
> > { KVM_CAP_PV_MMU, KVM_FEATURE_MMU_OP },
> > { KVM_CAP_ASYNC_PF, KVM_FEATURE_ASYNC_PF },
> > + { KVM_CAP_KICK_VCPU, KVM_FEATURE_KICK_VCPU },
>
> So this is handled in the kernel? Who enables the feature? Is it always on? Why bother with it in user space at all then?
Backwards compatibility
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2011-12-19 13:59 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-12-04 18:25 [Qemu-devel] [PATCH 0/3] QEMU kvm: Adding KICK_VCPU capability to i386 kvm Raghavendra K T
2011-12-04 18:25 ` [Qemu-devel] [PATCH 1/3] QEMU kvm: Syncing linux headers to 3.2.0-rc1 Raghavendra K T
2011-12-19 13:51 ` Alexander Graf
2011-12-04 18:26 ` [Qemu-devel] [PATCH 2/3] QEMU kvm: Syncing linux headers to support KICK_VCPU capability Raghavendra K T
2011-12-19 13:52 ` Alexander Graf
2011-12-04 18:26 ` [Qemu-devel] [PATCH 3/3] QEMU kvm/i386 : Adding KICK_VCPU capability support in i386 target Raghavendra K T
2011-12-19 13:54 ` Alexander Graf
2011-12-19 13:59 ` Avi Kivity [this message]
2011-12-19 14:03 ` Alexander Graf
2011-12-19 14:11 ` Jan Kiszka
2011-12-26 14:07 ` Avi Kivity
2011-12-26 17:13 ` Raghavendra K T
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=4EEF432A.3030905@redhat.com \
--to=avi@redhat.com \
--cc=agraf@suse.de \
--cc=jan.kiszka@siemens.com \
--cc=kvm@vger.kernel.org \
--cc=mtosatti@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=raghavendra.kt@linux.vnet.ibm.com \
--cc=suzuki@in.ibm.com \
--cc=vatsa@linux.vnet.ibm.com \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).