If clwb is available on the system, use it in drm_clflush_virt_range. If clwb is not available, fall back to clflushopt if you can. If clflushopt is not supported, fall all the way back to clflush. Signed-off-by: Ross Zwisler <ross.zwisler@xxxxxxxxxxxxxxx> Cc: H Peter Anvin <h.peter.anvin@xxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: David Airlie <airlied@xxxxxxxx> Cc: dri-devel@xxxxxxxxxxxxxxxxxxxxx Cc: x86@xxxxxxxxxx --- drivers/gpu/drm/drm_cache.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/drm_cache.c b/drivers/gpu/drm/drm_cache.c index aad9d82..84e9a04 100644 --- a/drivers/gpu/drm/drm_cache.c +++ b/drivers/gpu/drm/drm_cache.c @@ -138,8 +138,8 @@ drm_clflush_virt_range(void *addr, unsigned long length) void *end = addr + length; mb(); for (; addr < end; addr += boot_cpu_data.x86_clflush_size) - clflushopt(addr); - clflushopt(end - 1); + clwb(addr); + clwb(end - 1); mb(); return; } -- 1.9.3 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
