Revision 3af57f78c38131b7a66e2b01e06fdacae01992a3 authored by Heiko Carstens on 17 January 2014, 08:37:15 UTC, committed by David S. Miller on 18 January 2014, 02:54:49 UTC
The s390 bpf jit compiler emits the signed divide instructions "dr" and "d" for unsigned divisions. This can cause problems: the dividend will be zero extended to a 64 bit value and the divisor is the 32 bit signed value as specified A or X accumulator, even though A and X are supposed to be treated as unsigned values. The divide instrunctions will generate an exception if the result cannot be expressed with a 32 bit signed value. This is the case if e.g. the dividend is 0xffffffff and the divisor either 1 or also 0xffffffff (signed: -1). To avoid all these issues simply use unsigned divide instructions. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
1 parent 75b99db
File | Mode | Size |
---|---|---|
3com | ||
acenic | ||
adaptec | ||
advansys | ||
av7110 | ||
bnx2 | ||
bnx2x | ||
cis | ||
cpia2 | ||
cxgb3 | ||
dsp56k | ||
e100 | ||
edgeport | ||
emi26 | ||
emi62 | ||
ess | ||
kaweth | ||
keyspan | ||
keyspan_pda | ||
korg | ||
matrox | ||
myricom | ||
ositech | ||
qlogic | ||
r128 | ||
radeon | ||
sb16 | ||
sun | ||
tehuti | ||
tigon | ||
ttusb-budget | ||
vicam | ||
yam | ||
yamaha | ||
.gitignore | -rw-r--r-- | 39 bytes |
Makefile | -rw-r--r-- | 11.5 KB |
README.AddingFirmware | -rw-r--r-- | 1.5 KB |
WHENCE | -rw-r--r-- | 26.5 KB |
atmsar11.HEX | -rw-r--r-- | 18.7 KB |
ihex2fw.c | -rw-r--r-- | 6.6 KB |
mts_cdma.fw.ihex | -rw-r--r-- | 37.2 KB |
mts_edge.fw.ihex | -rw-r--r-- | 37.8 KB |
mts_gsm.fw.ihex | -rw-r--r-- | 37.2 KB |
ti_3410.fw.ihex | -rw-r--r-- | 37.0 KB |
ti_5052.fw.ihex | -rw-r--r-- | 37.0 KB |
whiteheat.HEX | -rw-r--r-- | 43.9 KB |
whiteheat_loader.HEX | -rw-r--r-- | 11.8 KB |
whiteheat_loader_debug.HEX | -rw-r--r-- | 17.2 KB |
Computing file changes ...