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xen-devel
RE: Re: [Xen-devel] [PATCH] ept: Fix bug in changeset 22526:7a5ee3800417
So system doesn't use VTD is not affectted, right?
> Date: Wed, 16 Mar 2011 09:40:15 +0000 > From: Tim Deegan <Tim.Deegan@xxxxxxxxxx> > Subject: Re: [Xen-devel] [PATCH] ept: Fix bug in changeset > 22526:7a5ee3800417 > To: George Dunlap <george.dunlap@xxxxxxxxxxxxx> > Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> > > At 15:41 +0000 on 15 Mar (1300203711), George Dunlap wrote: > > This fixes a bug in changeset 22526:7a5ee3800417, where the wrong > > value is read when deciding whether to flush the VTd tables. The > > effect is minor: in situations where the p2m entry is changed but the > > mfn is the same, the VTd tables will be unnecessarily flushed. > > > > old_entry is left untouched in the second case, since having a present > > old_entry will cause the an unnecessary check to be taken at the end > > of the function. > > > > Spotted-by: Zhang, Peng
Fei <zpfalpc23@xxxxxxxxx> > > Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxxxxx> > > Applied, thanks. > > Tim. > > -- > Tim Deegan <Tim.Deegan@xxxxxxxxxx> > Principal Software Engineer, Xen Platform Team > Citrix Systems UK Ltd. (Company #02937203, SL9 0BG) > > >
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MaoXiaoyun <=
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