[SPARC64]: Handle little-endian unaligned loads/stores correctly.
commitff171d8f66a7fe1a000e610e9de11224749f9a22
authorDavid S. Miller <davem@davemloft.net>
Tue, 20 Sep 2005 02:56:06 +0000 (19 19:56 -0700)
committerDavid S. Miller <davem@davemloft.net>
Tue, 20 Sep 2005 02:56:06 +0000 (19 19:56 -0700)
tree5cd542d07cb547d80bbf71fbd0e26df25d0895ea
parent875bd5ab01bc0b760fd4e97838931cd2e7456cbd
[SPARC64]: Handle little-endian unaligned loads/stores correctly.

Because we use byte loads/stores to cons up the value
in and out of registers, we can't expect the ASI endianness
setting to take care of this for us.  So do it by hand.

This case is triggered by drivers/block/aoe/aoecmd.c in the
ataid_complete() function where it goes:

/* word 100: number lba48 sectors */
ssize = le64_to_cpup((__le64 *) &id[100<<1]);

This &id[100<<1] address is 4 byte, rather than 8 byte aligned,
thus triggering the unaligned exception.

Signed-off-by: David S. Miller <davem@davemloft.net>
arch/sparc64/kernel/una_asm.S
arch/sparc64/kernel/unaligned.c