Re: r336921 broke booting on MBP 2017, EFIRT related

From: Konstantin Belousov <kostikbel_at_gmail.com>
Date: Wed, 29 Aug 2018 19:30:59 +0300
On Wed, Aug 29, 2018 at 07:17:07PM +0300, Yuri Pankov wrote:
> Konstantin Belousov wrote:
> > On Wed, Aug 29, 2018 at 09:12:37AM -0500, Kyle Evans wrote:
> >> I guess this patch might do it:
> >> https://people.freebsd.org/~kevans/efi-bootmap.diff
> >>
> >> Linux commit messages depict a tale in which they used to also only
> >> map RUNTIME entries, but they were effectively forced to back down on
> >> that because of buggy firmware that does exactly what you've described
> >> and they later reintroduced the restrictive mapping for i386-only
> >> where they'd not found such bugs.
> > 
> > Orthogonal to the loader patch, please try the following.  Even better,
> > try this with the stock loader.
> > 
> > You need to remove efirt from the kernel config for now, instead load
> > efirt.ko, perhaps after the system booted into single user.  I am interested
> > if the panic goes away.  You should see some interesting message from
> > kernel about EFI realtime clock.
> > 
> > If you have any binary modules like nvidia or vbox, do not load them
> > with the patched kernel.
> 
> Done, getting exactly the same fault without any new messages printed 
> (made sure I'm using the updated efirt using `nm | grep efirt_fault`).

Can you show me exact fault messages ?
Received on Wed Aug 29 2018 - 14:31:10 UTC

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