I've tracked this down to a single line, details in http://www.freebsd.org/cgi/query-pr.cgi?pr=181632. Basically, the code is now doing a 'sti, hlt' vs. a 'sti' in some code that is only supposed to run if idle is disabled. Given that 'hlt' is the idle instruction, this doesn't seem right.
On Thu, Aug 29, 2013 at 11:50 PM, Adrian Chadd <adr...@freebsd.org> wrote: > On 29 August 2013 23:46, Mike Harding <mvhard...@gmail.com> wrote: > >> I was able to track this down by building kernels against /base/stable/9 >> (it took >> -hours!-). >> > > Wow, thanks! > > >> The issue does occur with commit 244616, but does not occur with 244614. >> The >> only difference is a small patch to /usr/src/sys/dev/acpica/acpi_cpu.c - >> this >> code appears to do with c-state processing. I'll note it in the ticket, >> but somebody >> might want to look at this ASAP >> > > That's awesome. It's a very small ACPI patch. Let's see if the others who > are having this issue can test this out and report back! > > Thanks! > > > > -adrian > > _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
