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Subject[PATCH] Re: test9-pre8 -- Question: SMP not yet supported for Athlon systems?
Miles Lane wrote:
>
> Hi,
>
> Yesterday I reported a problem compiling with SMP enabled for an
> Athlon-targetted kernel. I wonder whether this is because there
> are no Athlon SMP systems out there, yet? If so, then if the
> architecture selected is Athlon, the SMP option should not be
> available when configuring the kernel tree. If there are SMP
> Athlon machines, would someone please follow up on this compile
> error?
>
> Thanks,
> Miles
>

Hello,

As far as I know there are no SMP boards yet for Athlon.

Nonetheless, here's the patch.

Tom--- v2.4.0-test8/linux/arch/i386/lib/mmx.c.orig Wed Oct 27 21:30:39 1999
+++ linux/arch/i386/lib/mmx.c Tue Jun 6 04:20:01 2000
@@ -1,6 +1,7 @@
#include <linux/types.h>
#include <linux/string.h>
#include <linux/sched.h>
+#include <asm/hardirq.h>

/*
* MMX 3DNow! library helper functions
@@ -88,6 +89,21 @@
stts();
return p;
}
+
+void * __constant_mmx_memcpy3d(void * to, const void * from, size_t len)
+{
+ if(in_interrupt())
+ return __constant_memcpy(to, from, len);
+ return _mmx_memcpy(to, from, len);
+}
+
+void *__mmx_memcpy3d(void *to, const void *from, size_t len)
+{
+ if(in_interrupt())
+ return __memcpy(to, from, len);
+ return _mmx_memcpy(to, from, len);
+}
+

static void fast_clear_page(void *page)
{
--- v2.4.0-test8/linux/include/asm-i386/mmx.h.orig Tue Jun 6 03:05:02 2000
+++ linux/include/asm-i386/mmx.h Tue Jun 6 04:25:27 2000
@@ -10,5 +10,7 @@
extern void *_mmx_memcpy(void *to, const void *from, size_t size);
extern void mmx_clear_page(void *page);
extern void mmx_copy_page(void *to, void *from);
+extern __inline__ void *__constant_mmx_memcpy3d(void * to, const void * from, size_t len);
+extern __inline__ void *__mmx_memcpy3d(void *to, const void *from, size_t len);

#endif
--- v2.4.0-test8/linux/include/asm-i386/string.h.orig Tue Jun 6 03:05:02 2000
+++ linux/include/asm-i386/string.h Tue Jun 6 04:30:37 2000
@@ -287,13 +287,6 @@

#ifdef CONFIG_X86_USE_3DNOW

-/* All this just for in_interrupt() ... */
-
-#include <asm/system.h>
-#include <asm/ptrace.h>
-#include <linux/smp.h>
-#include <linux/spinlock.h>
-#include <linux/interrupt.h>
#include <asm/mmx.h>

/*
@@ -302,16 +295,16 @@

static inline void * __constant_memcpy3d(void * to, const void * from, size_t len)
{
- if(len<512 || in_interrupt())
+ if(len<512)
return __constant_memcpy(to, from, len);
- return _mmx_memcpy(to, from, len);
+ return __constant_mmx_memcpy3d(to, from, len);
}

extern __inline__ void *__memcpy3d(void *to, const void *from, size_t len)
{
- if(len<512 || in_interrupt())
+ if(len<512)
return __memcpy(to, from, len);
- return _mmx_memcpy(to, from, len);
+ return __mmx_memcpy3d(to, from, len);
}

#define memcpy(t, f, n) \
\
 
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