From: Avi Kivity <avi@redhat.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Takuya Yoshikawa <takuya.yoshikawa@gmail.com>,
kvm@vger.kernel.org, yoshikawa.takuya@oss.ntt.co.jp
Subject: Re: [PATCH v2] KVM: Avoid zapping unrelated shadows in __kvm_set_memory_region()
Date: Mon, 16 Apr 2012 15:35:19 +0300 [thread overview]
Message-ID: <4F8C1207.4040808@redhat.com> (raw)
In-Reply-To: <20120413213339.GB4190@amt.cnet>
On 04/14/2012 12:33 AM, Marcelo Tosatti wrote:
> mmio sptes are not related to any particular slot (by definition),
> i think you misunderstood the purpose of this flush. It handles
>
> 1) [start, end] gpa range unmapped.
> 2) mmio sptes are created that map this range.
> 3) a new slot is created. mmio sptes that map [start, end] range,
> which is now backed by new memslot should be removed.
>
> Perhaps there is an efficient way to clear all mmio sptes, or all
> mmio sptes pointing to [start, end] (instead of all sptes), here.
It shouldn't be too hard for direct maps. For indirect maps, there is
now way to reach the spte, since we can't rmap mmio sptes.
--
error compiling committee.c: too many arguments to function
prev parent reply other threads:[~2012-04-16 12:35 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-10 13:05 [PATCH v2] KVM: Avoid zapping unrelated shadows in __kvm_set_memory_region() Takuya Yoshikawa
2012-04-11 3:11 ` Xiao Guangrong
2012-04-14 1:12 ` Takuya Yoshikawa
2012-04-16 3:53 ` Xiao Guangrong
2012-04-13 21:33 ` Marcelo Tosatti
2012-04-14 1:01 ` Takuya Yoshikawa
2012-04-16 12:35 ` Avi Kivity [this message]
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