Hey-
i was just trying to update rawhide to numactl-2.0.2 and ran into a
build break. It bailed out while building clearcache.c for numademo on i386
with the following error:
clearcache.c: In function âclearcacheâ:
clearcache.c:60: error: can't find a register in class âBREGâ while reloading
âasmâ
I'm pretty lousy with asm, but after some reasearch it appeaered to me that it
was invalid to assing values to ebx while building code with -fPic (which I was
doing).
The below patch, which modifies the asm in quesition to use a register of the
compliers choosing, rather than ebx specifically, corrects the problem for me:
Regards
Neil
Signed-off-by: Neil Horman <nhorman@xxxxxxxxxxxxx>
clearcache.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -up numactl-2.0.2/clearcache.c.orig numactl-2.0.2/clearcache.c
--- numactl-2.0.2/clearcache.c.orig 2008-09-29 16:08:38.000000000 -0400
+++ numactl-2.0.2/clearcache.c 2008-09-29 16:08:49.000000000 -0400
@@ -57,7 +57,7 @@ void clearcache(unsigned char *mem, unsi
#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");
+ asm("cpuid" : "=a" (eax), "=r" (cl), "=d" (feat) : "0" (1) : "cx");
if (!(feat & (1 << 19)))
fallback_clearcache();
cl = ((cl >> 8) & 0xff) * 8;
--
/****************************************************
* Neil Horman <nhorman@xxxxxxxxxxxxx>
* Software Engineer, Red Hat
****************************************************/
--
To unsubscribe from this list: send the line "unsubscribe linux-numa" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
