From: Avi Kivity <avi@redhat.com>
To: kvm-ia64@vger.kernel.org
Subject: Re: [00/03][PATCH] kvm-ia64 updates for linux-2.6.28-rc2
Date: Thu, 30 Oct 2008 09:36:21 +0000 [thread overview]
Message-ID: <49098015.4000901@redhat.com> (raw)
In-Reply-To: <706158FABBBA044BAD4FE898A02E4BC2140C7FE4@pdsmsx503.ccr.corp.intel.com>
Zhang, Xiantao wrote:
> It is a potential issue. If the vcpu goes to halt with the lock taken, other vcpus wants to take write lock, they have to wait until the all halted vcpus are waken up, so it may impact performance. :)
What is the impact? Taking slots_lock for write is very rare.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
WARNING: multiple messages have this Message-ID (diff)
From: Avi Kivity <avi@redhat.com>
To: "Zhang, Xiantao" <xiantao.zhang@intel.com>
Cc: "kvm-ia64@vger.kernel.org" <kvm-ia64@vger.kernel.org>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>
Subject: Re: [00/03][PATCH] kvm-ia64 updates for linux-2.6.28-rc2
Date: Thu, 30 Oct 2008 11:36:21 +0200 [thread overview]
Message-ID: <49098015.4000901@redhat.com> (raw)
In-Reply-To: <706158FABBBA044BAD4FE898A02E4BC2140C8363@pdsmsx503.ccr.corp.intel.com>
Zhang, Xiantao wrote:
> It is a potential issue. If the vcpu goes to halt with the lock taken, other vcpus wants to take write lock, they have to wait until the all halted vcpus are waken up, so it may impact performance. :)
What is the impact? Taking slots_lock for write is very rare.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2008-10-30 9:36 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-29 4:39 [00/03][PATCH] kvm-ia64 updates for linux-2.6.28-rc2 Zhang, Xiantao
2008-10-29 4:39 ` Zhang, Xiantao
2008-10-29 14:27 ` Avi Kivity
2008-10-29 14:27 ` Avi Kivity
2008-10-29 14:33 ` Jes Sorensen
2008-10-29 14:33 ` Jes Sorensen
2008-10-29 14:45 ` Avi Kivity
2008-10-29 14:45 ` Avi Kivity
2008-10-29 14:51 ` Jes Sorensen
2008-10-29 14:51 ` Jes Sorensen
2008-10-30 1:05 ` Zhang, Xiantao
2008-10-30 1:05 ` Zhang, Xiantao
2008-10-30 9:36 ` Avi Kivity [this message]
2008-10-30 9:36 ` Avi Kivity
2008-10-30 10:16 ` Zhang, Xiantao
2008-10-30 10:16 ` Zhang, Xiantao
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