On Wed, Aug 17, 2016 at 08:54:11PM -0700, Huang, Ying wrote:
> flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
> cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx
> pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology
> nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx
> est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic
> popcnt tsc_deadline_timer aes xsave avx lahf_lm tpr_shadow vnmi flexpriority
> ept vpid xsaveopt dtherm ida arat pln pts
^^^^^^
There it is.
So if there's no bug, alternatives should replace all "call
__sw_hweightXX" calls with POPCNT. So you shouldn't be even calling
these functions and hitting that path.
Can you boot the kernel with "debug-alternative" and put that dmesg
somewhere along with vmlinux for me to stare at? Privately is fine too.
I'd like to make sure the alternatives application actually happens.
Thanks.
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284
(AG Nürnberg)
--
