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build fix for older kernels

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Alan Hourihane 2008-02-05 10:11:24 +00:00
parent f2c706e247
commit 5e81a40f3b
1 changed files with 5 additions and 0 deletions
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5
linux-core/i915_buffer.c
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@ -270,10 +270,12 @@ static inline void clflush(volatile void *__p)
static inline void drm_cache_flush_addr(void *virt)
{
#ifdef cpu_has_clflush
int i;
for (i = 0; i < PAGE_SIZE; i += boot_cpu_data.x86_clflush_size)
clflush(virt+i);
#endif
}
static inline void drm_cache_flush_page(struct page *p)
@ -291,6 +293,9 @@ void i915_flush_ttm(struct drm_ttm *ttm)
DRM_MEMORYBARRIER();
#ifdef CONFIG_X86_32
#ifndef cpu_has_clflush
#define cpu_has_clflush 0
#endif
/* Hopefully nobody has built an x86-64 processor without clflush */
if (!cpu_has_clflush) {
wbinvd();