* De: Maxime Henrion <[EMAIL PROTECTED]> [ Data: 2002-11-22 ]
[ Subjecte: Re: VM locking problem... And doscmd(8) ]
> John Baldwin wrote:
> >
> > On 22-Nov-2002 Juli Mallett wrote:
> > > * De: Robert Watson <[EMAIL PROTECTED]> [ Data: 2002-11-21 ]
> > > [ Subjecte: Re: VM locking problem... And doscmd(8) ]
> > >> For those of us that don't frequently (ever) use doscmd -- can you provide
> > >> a tarball of the necessary configuration files, executable, etc,
> > >> somewhere?
> > >
> > > I don't (ever) either, and am doing this without a config file (as far as
> > > I'm aware anyway), and using the following executable:
> > >
> > > http://people.freebsd.org/~jmallett/boom.exe
> >
> > There is some discussion on IRC, and Maxime is working on a fix. The
> > problem is that if you use a TSS (for /dev/io or some such) then the
> > TSS gets kmem_free()'d in cpu_thread_exit(). However, cpu_thread_exit()
> > is a particularly bad time to be calling kmem_free() as you are holding
> > sched_lock in a critical section w/o any sleep mutexes when it is called.
> > :) The solution I've discussed with Maxime is to create a
> > cpu_thread_dtor() callout called from thread_dtor() (which is called when
> > a thread is free()'d) and to move the kmem_free() of the TSS into
> > that function instead.
>
> The attached patch fixes it for me. It free()'s the TSS in the new
> cpu_thread_dtor() function as John suggested.
Works great, thanks!
juli.
--
Juli Mallett <[EMAIL PROTECTED]>
OpenDarwin, Mono, FreeBSD Developer.
ircd-hybrid Developer, EFnet addict.
FreeBSD on MIPS-Anything on FreeBSD.
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