[06:36] <TJ-> What's the best way to effectively disable IPv4 as comprehensively as possible given there's no generic CONFIG_IPV4=n or /proc/sys/net/ipv4/conf/all/disable_ipv4 ?
[13:00] <cascardo> iptables comes to mind
[13:00] <cascardo> enyc: look at /usr/share/doc/linux-modules-5.4.0-53-generic/changelog.Debian.gz
[13:08] <enyc> cascardo: OOOOOoOOOOOOO thankyou for pointer!
[15:47] <LordDoskias> is ubuntu 20l.04 supposed to support amd ibs ? support for it landed many years ago 
[15:48] <LordDoskias> but still when i run: perf record -e cpu-cycles i get an EINVAL error when passing the :p modifier ?
[15:49] <LordDoskias> i also get the following in dmesg: [чт ное 12 17:11:52 2020] perf: AMD IBS detected (0x000003ff)
[15:49] <LordDoskias>  
[15:49] <LordDoskias> so it seems support should be there yet it doesn't work 
[18:18] <cascardo> LordDoskias: try it with --count=1000
[18:19] <LordDoskias> sudo perf record -c 1000 -g -e cpu-cycles:pp doesn't work 
[18:19] <LordDoskias> but this one does: sudo perf record -c 100001 -e ibs_op/cnt_ctl=1/pp -a -C 0 taskset -c 0 
[18:19] <LordDoskias> ... 
[18:24] <LordDoskias> amd'\s perf guy gave me this command line, apparently IBS is b0rked ... 
[18:33] <cascardo> LordDoskias: what about with -F and -c ? looking at the IBS code here
[18:36] <LordDoskias> with just -c1000 still doesn't work 
[18:36] <LordDoskias> i think the even is different
[18:37] <LordDoskias> i.e cpu-cycle:pp is not doing what's supposed
[18:37] <LordDoskias> only -e ibs_op/cntl_ctl=1 does ...
[18:50] <cascardo> what about -e r076:p ?