From: Wei Liu <wei.liu2@citrix.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>
Cc: Wei Liu <wei.liu2@citrix.com>,
Ian Jackson <Ian.Jackson@eu.citrix.com>,
Xen-devel <xen-devel@lists.xen.org>
Subject: Re: [PATCH] tools/migrate: Prevent PTE truncation from being fatal duing the live phase
Date: Fri, 2 Sep 2016 09:30:03 +0100 [thread overview]
Message-ID: <20160902083003.GF21282@citrix.com> (raw)
In-Reply-To: <1472723103-25443-1-git-send-email-andrew.cooper3@citrix.com>
On Thu, Sep 01, 2016 at 10:45:03AM +0100, Andrew Cooper wrote:
> It is possible, when normalising a PV pagetable that the table has been freed
> and reused for something else by the guest.
>
> In such a case, data read might no longer be a pagetable, and fail the
> truncation check. However, this should only be fatal if we encounter such a
> page in the paused phase.
>
> This check is now consistent with all other checks in the same area.
>
> Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Wei Liu <wei.liu2@citrix.com>
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next prev parent reply other threads:[~2016-09-02 8:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-01 8:47 [ovmf test] 100687: all pass - PUSHED osstest service owner
2016-09-01 9:45 ` [PATCH] tools/migrate: Prevent PTE truncation from being fatal duing the live phase Andrew Cooper
2016-09-02 8:30 ` Wei Liu [this message]
2016-09-02 8:56 ` Wei Liu
2016-09-02 10:54 ` Ian Jackson
-- strict thread matches above, loose matches on Subject: below --
2016-09-01 8:51 [xen-unstable test] 100684: regressions - FAIL osstest service owner
2016-09-01 9:51 ` [PATCH] tools/migrate: Prevent PTE truncation from being fatal duing the live phase Andrew Cooper
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