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24d559cac4
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3 Commits

Author SHA1 Message Date
David S. Miller
24d559cac4 [SPARC64]: store-init needs trailing membar. 
The manual says that it is required and we actually have crash reports
where loads see stale data due to not having membars here.

In one case the networking does:

	memset(skb, 0, offsetof(struct sk_buff, truesize));

and then some code later checks skb->nohdr for zero, but it's still
the value that was there before the memset().

Note that arch/sparc64/lib/xor.S already got this right.

Signed-off-by: David S. Miller <davem@davemloft.net>
 2007-03-19 13:27:33 -07:00
David S. Miller
6241e5cc6a [SPARC64]: Fix branch signedness bug in all code patching. 
The bug that hit SUN4V TLB patching exists elsewhere.
Make sure we cure all such cases.

Signed-off-by: David S. Miller <davem@davemloft.net>
 2006-03-20 01:12:29 -08:00
David S. Miller
8591e30272 [SPARC64]: Niagara copy/clear page. 
Happily we have no D-cache aliasing issues on these
chips, so the implementation is very straightforward.

Add a stub in bootup which will be where the patching
calls will be made for niagara/sun4v/hypervisor.

Signed-off-by: David S. Miller <davem@davemloft.net>
 2006-03-20 01:11:54 -08:00