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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> |
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boot | ||
kernel | ||
lib | ||
math-emu | ||
mm | ||
oprofile | ||
prom | ||
solaris | ||
defconfig | ||
Kconfig | ||
Kconfig.debug | ||
Makefile |