[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] Extra check in grant table code for mapping of shared frame
Probably needs Tim to comment on it. Assuming he's any wiser about this code than the rest of us. ;) -- Keir On 17/09/2012 12:00, "Andres Lagar-Cavilla" <andreslc@xxxxxxxxxxxxxx> wrote: > ping? > Thanks, > Andres > On Sep 13, 2012, at 11:27 AM, Andres Lagar-Cavilla wrote: > >> xen/common/grant_table.c | 9 ++++++--- >> 1 files changed, 6 insertions(+), 3 deletions(-) >> >> >> Signed-off-by: Andres Lagar-Cavilla <andres@xxxxxxxxxxxxxxxx> >> >> diff -r 5ce5b53ea68f -r 40b91bed1275 xen/common/grant_table.c >> --- a/xen/common/grant_table.c >> +++ b/xen/common/grant_table.c >> @@ -649,9 +649,12 @@ __gnttab_map_grant_ref( >> } >> else if ( owner == rd || owner == dom_cow ) >> { >> - if ( gnttab_host_mapping_get_page_type(op, ld, rd) && >> - !get_page_type(pg, PGT_writable_page) ) >> - goto could_not_pin; >> + if ( gnttab_host_mapping_get_page_type(op, ld, rd) ) >> + { >> + if ( (owner == dom_cow) || >> + !get_page_type(pg, PGT_writable_page) ) >> + goto could_not_pin; >> + } >> >> nr_gets++; >> if ( op->flags & GNTMAP_host_map ) > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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