numactl/numactl-clearcache-pie.patch

29 lines
997 B
Diff
Raw Normal View History

--- numactl-2.0.10.orig/clearcache.c
+++ numactl-2.0.10/clearcache.c
@@ -54,24 +54,5 @@ void fallback_clearcache(void)
void clearcache(unsigned char *mem, unsigned size)
{
-#if defined(__i386__) || defined(__x86_64__)
- unsigned i, cl, eax, feat;
- /* get clflush unit and feature */
- asm("cpuid" : "=a" (eax), "=b" (cl), "=d" (feat) : "0" (1) : "cx");
- if (!(feat & (1 << 19)))
- fallback_clearcache();
- cl = ((cl >> 8) & 0xff) * 8;
- for (i = 0; i < size; i += cl)
- asm("clflush %0" :: "m" (mem[i]));
-#elif defined(__ia64__)
- unsigned long cl, endcl;
- // flush probable 128 byte cache lines (but possibly 64 bytes)
- cl = (unsigned long)mem;
- endcl = (unsigned long)(mem + (size-1));
- for (; cl <= endcl; cl += 64)
- asm ("fc %0" :: "r"(cl) : "memory" );
-#else
-#warning "Consider adding a clearcache implementation for your architecture"
- fallback_clearcache();
-#endif
+ __builtin___clear_cache(mem, (mem + (size-1)));
}