Am 06.11.2017 um 19:28 schrieb Tom St Denis: > On 06/11/17 05:01 AM, Christian König wrote: >> Am 04.11.2017 um 18:15 schrieb Tom St Denis: >>> Signed-off-by: Tom St Denis <tom.stdenis at amd.com> >> >> Still not perfect, but good enough for now. Patch is Tested-by: >> Christian König <christian.koenig at amd.com>. >> >> I think you need to rework the VM walking a bit, cause we need to >> support the T bit as well in the future and your code make a few >> assumptions which doesn't allow that. > > Doesn't the T bit imply V=0 which means the page isn't backed by > memory.  Not much umr could do about that other than to print out the > T bit. No, the T bit means translate further. In other words it is the counter part of the P bit and means that a PTE should be handled as a PDE. But for this to have meaning you also need to handle the fragment size as well (Now I have you totally confused, haven't I? :). Cheers, Christian. > > Tom > _______________________________________________ > amd-gfx mailing list > amd-gfx at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx
