[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Crash on boot with 2.6.37-rc8-git3
On Tue, 25 Jan 2011, Ian Campbell wrote: > > unless I am very confused > > > > map[i].size -= (map[i].size + map[i].addr) % PAGE_SIZE > > > > is not the same as: > > > > as map[i].size &= ~(PAGE_SIZE-1): > > > > because it also takes into account the possibility that map[i].addr is > > not page aligned. > > Oh yes, I didn't notice that aspect of it. > > > It doesn't move map[i].addr upward but still makes sure that > > the region ends at a page boundary anyway. > > Which returns to my second question ;-) Why do we not need to align addr > too? My machine can boot fine with a map[i].addr not page aligned. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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