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From: "nai.xia" <nai.xia@gmail.com>
To: Joe Epstein <jepstein98@gmail.com>
Cc: xen-devel@lists.xensource.com, Keir Fraser <keir@xen.org>,
	Tim Deegan <Tim.Deegan@citrix.com>
Subject: Is this a data corruption bug for p2m_ram_shared page in hvm_hap_nested_page_fault()
Date: Thu, 02 Feb 2012 18:17:06 +0800	[thread overview]
Message-ID: <4F2A62A2.1010505@gmail.com> (raw)

Hi,

In hvm_hap_nested_page_fault(), it seems that all valid write faults are now handled
by p2m_mem_access_check(), right? Then when will mem_sharing_unshare_page()
be called? And if p2m->access_required == false, the access restrictions is cleared
, then the data in this shared page could be corrupted by this page write access?


Thanks,

Nai

             reply	other threads:[~2012-02-02 10:17 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-02 10:17 nai.xia [this message]
2012-02-02 10:25 ` Is this a data corruption bug for p2m_ram_shared page in hvm_hap_nested_page_fault() nai.xia
2012-02-02 11:19   ` Tim Deegan
2012-02-02 11:48     ` nai.xia

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