Re: CVS commit: src/sys/arch

[Valery Ushakov <uwe%stderr.spb.ru@localhost>]

[sorry to spam the list, but your server doesn't accept mail from me
it seem]

On Sun, Mar 10, 2019 at 12:19:40 +0100, Maxime Villard wrote:
> Date: Sun, 10 Mar 2019 12:19:40 +0100
> From: Maxime Villard <max%m00nbsd.net@localhost>
> Subject: Re: CVS commit: src/sys/arch
> To: source-changes-d%NetBSD.org@localhost, Christos Zoulas <christos%astron.com@localhost>,
>  uwe%stderr.spb.ru@localhost
> 
> Le 10/03/2019 ? 11:58, Valery Ushakov a ?crit :
> > On Sun, Mar 10, 2019 at 08:30:51 +0100, Maxime Villard wrote:
> > > Date: Sun, 10 Mar 2019 08:30:51 +0100
> > > From: Maxime Villard <max%m00nbsd.net@localhost>
> > > Subject: Re: CVS commit: src/sys/arch
> > > To: Christos Zoulas <christos%astron.com@localhost>, source-changes-d%NetBSD.org@localhost
> > > 
> > > Le 10/03/2019 ? 04:25, Christos Zoulas a ?crit :
> > > > In article <20190309090956.EF19CFB17%cvs.NetBSD.org@localhost>,
> > > > Maxime Villard <source-changes-d%NetBSD.org@localhost> wrote:
> > > > > -=-=-=-=-=-
> > > > > 
> > > > > Module Name:	src
> > > > > Committed By:	maxv
> > > > > Date:		Sat Mar  9 09:09:56 UTC 2019
> > > > > 
> > > > > Modified Files:
> > > > > 	src/sys/arch/amd64/include: pmap.h
> > > > > 	src/sys/arch/i386/include: pmap.h
> > > > > 
> > > > > Log Message:
> > > > > New software PTE bits.
> > > > 
> > > > Virtualbox is not booting after those two commits.
> > > 
> > > Can you elaborate? Because I've tested both amd64 and i386 on VirtualBox,
> > > and amd64 on real hardware, everything works. I've reviewed my changes
> > > from yesterday for the third time, I still don't see anything wrong.
> > 
> > Bear in mind that VirtualBox exposes a lot of host CPU features to the
> > guest.
> > 
> > -uwe
> 
> The PTE bits are standard and have the same meaning on all x86 CPUs.

That reminds me.  boot -d seems to have pmap issues, including (as
reported by other people) on real hardware.  IIRC, when -7 is stopped
in boot -d the hw pmap tree is not initialized or something.  I don't
really know x86 to interpret VBox guru properly.  More recent kerenels
don't even get to the ddb prompt, iirc.

There are more details at http://gnats.netbsd.org/53311 (modulo my
confusion about automatic bt).

Please, could you take a look when you have time?
Thanks in advance.

-uwe