• David S. Miller's avatar
    [SPARC64]: store-init needs trailing membar. · 24d559ca
    David S. Miller authored
    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: default avatarDavid S. Miller <davem@davemloft.net>
    24d559ca
NGbzero.S 3.4 KB