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author | Mikael Pettersson <mikpe@it.uu.se> | 2008-07-31 00:40:50 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2008-07-31 00:40:50 +0200 |
commit | d72609e17fd93bb2f7e0f7e1bdc70b6d20e43843 (patch) | |
tree | d2b2ec57bbee2759e6cfdbc4269211dad888e79f /arch/sparc/include/asm/pgtsun4.h | |
parent | sparc: merge of_platform_{32,64}.h (diff) | |
download | linux-d72609e17fd93bb2f7e0f7e1bdc70b6d20e43843.tar.xz linux-d72609e17fd93bb2f7e0f7e1bdc70b6d20e43843.zip |
sparc64: FUTEX_OP_ANDN fix
Correct sparc64's implementation of FUTEX_OP_ANDN to do a
bitwise negate of the oparg parameter before applying the
AND operation. All other archs that support FUTEX_OP_ANDN
either negate oparg explicitly (frv, ia64, mips, sh, x86),
or do so indirectly by using an and-not instruction (powerpc).
Since sparc64 has and-not, I chose to use that solution.
I've not found any use of FUTEX_OP_ANDN in glibc so the
impact of this bug is probably minor. But other user-space
components may try to use it so it should still get fixed.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/include/asm/pgtsun4.h')
0 files changed, 0 insertions, 0 deletions