From: Keir Fraser <keir.xen@gmail.com>
To: Juergen Gross <juergen.gross@ts.fujitsu.com>,
xen-devel@lists.xensource.com
Subject: Re: [PATCH] Allow wake up of offline vcpu via nmi-ipi
Date: Wed, 18 Jan 2012 09:29:20 +0000 [thread overview]
Message-ID: <CB3C4170.28FF8%keir.xen@gmail.com> (raw)
In-Reply-To: <88318e850353da840fe7.1326876484@nehalem1>
On 18/01/2012 08:48, "Juergen Gross" <juergen.gross@ts.fujitsu.com> wrote:
> On a real machine a cpu disabled via hlt with interrupts disabled can be
> reactivated via a nmi ipi. Enable the hypervisor to do this for hvm, too.
I think the vcpu_kick() path is still needed where the vcpu is HLTed with
interrupts enabled. I'll have to give this a bit of thought... Probably
clear_bit(_VPF_down)
vcpu_wake()
vcpu_kick()
Would work just fine.
-- Keir
> Signed-off-by: juergen.gross@ts.fujitsu.com
>
>
> 1 file changed, 4 insertions(+), 1 deletion(-)
> xen/arch/x86/hvm/vlapic.c | 5 ++++-
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xensource.com
> http://lists.xensource.com/xen-devel
prev parent reply other threads:[~2012-01-18 9:29 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-18 8:48 [PATCH] Allow wake up of offline vcpu via nmi-ipi Juergen Gross
2012-01-18 9:07 ` Juergen Gross
2012-01-18 9:31 ` Keir Fraser
2012-01-18 9:36 ` Keir Fraser
2012-01-18 10:39 ` Juergen Gross
2012-01-18 9:29 ` Keir Fraser [this message]
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