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authorTom Musta <tmusta@us.ibm.com>2013-08-22 14:25:28 (GMT)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2013-08-27 04:36:08 (GMT)
commit17e8de7e1878bbd45f3e268932e997496ddbbfe7 (patch)
treef7dc643d8809b2701be9d7547ddb680c19f2fd02 /Documentation/PCI
parentf748edafac858404be6c8dd67160c2032d97ddf5 (diff)
downloadlinux-17e8de7e1878bbd45f3e268932e997496ddbbfe7.tar.xz
powerpc: Unaligned stores and stmw are broken in emulation code
The stmw instruction was incorrectly decoded as an update form instruction and thus the RA register was being clobbered. Also, the utility routine to write memory to unaligned addresses breaks the operation into smaller aligned accesses but was incorrectly incrementing the address by only one; it needs to increment the address by the size of the smaller aligned chunk. Signed-off-by: Tom Musta <tmusta@us.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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