FEX-Emu/linux
1
0
Fork 0
mirror of https://github.com/FEX-Emu/linux.git synced 2024-12-21 00:42:16 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

drm/ttm: powerpc: Fix Highmem cache flushing.

Browse Source 
Temporarily maps highmem pages while flushing to get a valid virtual
address to flush.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Thomas Hellstrom 2009-07-24 10:22:36 +02:00 committed by Dave Airlie
parent 73ba651fc2
commit f121ecfebb
1 changed files with 10 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/gpu/drm/ttm/ttm_tt.c
View File

@ -86,10 +86,16 @@ void ttm_tt_cache_flush(struct page *pages[], unsigned long num_pages)
unsigned long i;
for (i = 0; i < num_pages; ++i) {
if (pages[i]) {
unsigned long start = (unsigned long)page_address(pages[i]);
flush_dcache_range(start, start + PAGE_SIZE);
}
struct page *page = pages[i];
void *page_virtual;
if (unlikely(page == NULL))
continue;
page_virtual = kmap_atomic(page, KM_USER0);
flush_dcache_range((unsigned long) page_virtual,
(unsigned long) page_virtual + PAGE_SIZE);
kunmap_atomic(page_virtual, KM_USER0);
}
#else
if (on_each_cpu(ttm_tt_ipi_handler, NULL, 1) != 0)