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Tim Deegan authored
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@gmail.com> Signed-off-by: George Dunlap <george.dunlap@eu.citrix.com> Acked-by: Tim Deegan <Tim.Deegan@citrix.com>
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