diff options
Diffstat (limited to 'linux-core')
| -rw-r--r-- | linux-core/i915_buffer.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/linux-core/i915_buffer.c b/linux-core/i915_buffer.c index 3dd236dd..08067476 100644 --- a/linux-core/i915_buffer.c +++ b/linux-core/i915_buffer.c @@ -286,7 +286,18 @@ void i915_flush_ttm(struct drm_ttm *ttm) return; DRM_MEMORYBARRIER(); + +#ifdef CONFIG_X86_32 + /* Hopefully nobody has built an x86-64 processor without clflush */ + if (!cpu_has_clflush) { + wbinvd(); + DRM_MEMORYBARRIER(); + return; + } +#endif + for (i = ttm->num_pages - 1; i >= 0; i--) drm_cache_flush_page(drm_ttm_get_page(ttm, i)); + DRM_MEMORYBARRIER(); } |