From: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: Avi Kivity <avi@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
LKML <linux-kernel@vger.kernel.org>, KVM <kvm@vger.kernel.org>
Subject: Re: [RFC PATCH v2 7/7] KVM: KVM: don't break vcpu 'halt' state due to apfs
Date: Tue, 02 Nov 2010 17:30:16 +0800 [thread overview]
Message-ID: <4CCFDA28.4070003@cn.fujitsu.com> (raw)
In-Reply-To: <20101102091430.GD7881@redhat.com>
On 11/02/2010 05:14 PM, Gleb Natapov wrote:
> If irqchip is in userspace apf is disabled (see mmu.c:can_do_async_pf()).
> The reason for this is that when irqchip_in_kernel(v->kvm) cpu sleeps in
> userspace during halt, so all event that can cause it to be unhalted
> should be generated in userspace too. This is also the reason you can't have
> pit in kernel and irqchip in userpsace.
>
Oh, thank you very much for answering so many questions, and your patch is
looks good for me! ;-)
next prev parent reply other threads:[~2010-11-02 9:26 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-01 8:58 [PATCH v2 1/7] KVM: fix tracing kvm_try_async_get_page Xiao Guangrong
2010-11-01 8:59 ` [PATCH v2 2/7] KVM: cleanup aysnc_pf tracepoints Xiao Guangrong
2010-11-01 9:00 ` [PATCH v2 3/7] KVM: fix searching async gfn in kvm_async_pf_gfn_slot Xiao Guangrong
2010-11-01 9:01 ` [PATCH v2 4/7] KVM: avoid unnecessary wait for a async pf Xiao Guangrong
2010-11-01 9:25 ` Gleb Natapov
2010-11-01 9:02 ` [PATCH v2 5/7] KVM: handle more completed apfs if possible Xiao Guangrong
2010-11-01 9:24 ` Gleb Natapov
2010-11-01 9:34 ` Xiao Guangrong
2010-11-02 9:35 ` [PATCH v3 " Xiao Guangrong
2010-11-02 12:38 ` Gleb Natapov
2010-11-01 9:03 ` [RFC PATCH v2 6/7] KVM: fix the race while wakeup all pv guest Xiao Guangrong
2010-11-01 12:58 ` Gleb Natapov
2010-11-01 9:05 ` [RFC PATCH v2 7/7] KVM: KVM: don't break vcpu 'halt' state due to apfs Xiao Guangrong
2010-11-01 12:55 ` Gleb Natapov
2010-11-02 2:30 ` Xiao Guangrong
2010-11-02 6:56 ` Gleb Natapov
2010-11-02 7:31 ` Xiao Guangrong
2010-11-02 7:45 ` Gleb Natapov
2010-11-02 9:09 ` Xiao Guangrong
2010-11-02 9:14 ` Gleb Natapov
2010-11-02 9:30 ` Xiao Guangrong [this message]
2010-11-02 12:39 ` Gleb Natapov
2010-11-03 9:47 ` Xiao Guangrong
2010-11-03 9:45 ` Gleb Natapov
2010-11-03 13:43 ` Marcelo Tosatti
2010-11-01 13:09 ` [PATCH v2 1/7] KVM: fix tracing kvm_try_async_get_page Gleb Natapov
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