| Message ID | 1391589243-10467-1-git-send-email-thellstrom@vmware.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
----- Ursprungligt meddelande ----- > These page pointers shouldn't be visible to TTM in the first place, but > until we fix that up, don't clear the page metadata because that > will upset the exporter. > > Reported-by: Cristoph Haag <haagch.christoph@googleemail.com> > Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> > --- > drivers/gpu/drm/ttm/ttm_tt.c | 3 +++ > 1 file changed, 3 insertions(+) Reviewed-by: Jakob Bornecrantz <jakob@vmware.com> > > diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c > index 9af9908..75f3190 100644 > --- a/drivers/gpu/drm/ttm/ttm_tt.c > +++ b/drivers/gpu/drm/ttm/ttm_tt.c > @@ -380,6 +380,9 @@ static void ttm_tt_clear_mapping(struct ttm_tt *ttm) > pgoff_t i; > struct page **page = ttm->pages; > > + if (ttm->page_flags & TTM_PAGE_FLAG_SG) > + return; > + > for (i = 0; i < ttm->num_pages; ++i) { > (*page)->mapping = NULL; > (*page++)->index = 0; > -- > 1.7.10.4 >
diff --git a/drivers/gpu/drm/ttm/ttm_tt.c b/drivers/gpu/drm/ttm/ttm_tt.c index 9af9908..75f3190 100644 --- a/drivers/gpu/drm/ttm/ttm_tt.c +++ b/drivers/gpu/drm/ttm/ttm_tt.c @@ -380,6 +380,9 @@ static void ttm_tt_clear_mapping(struct ttm_tt *ttm) pgoff_t i; struct page **page = ttm->pages; + if (ttm->page_flags & TTM_PAGE_FLAG_SG) + return; + for (i = 0; i < ttm->num_pages; ++i) { (*page)->mapping = NULL; (*page++)->index = 0;
These page pointers shouldn't be visible to TTM in the first place, but until we fix that up, don't clear the page metadata because that will upset the exporter. Reported-by: Cristoph Haag <haagch.christoph@googleemail.com> Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> --- drivers/gpu/drm/ttm/ttm_tt.c | 3 +++ 1 file changed, 3 insertions(+)