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Date: Fri, 23 Mar 2018 11:52:27 +0000
From: Ruslan Bukin <ruslan.bukin@cl.cam.ac.uk>
To: Alan Somers <asomers@freebsd.org>
Cc: Conrad Meyer <cem@freebsd.org>,
 src-committers <src-committers@freebsd.org>,
 svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject: Re: svn commit: r330894 - in head/sys/contrib/zstd: . contrib/meson
 doc doc/images lib lib/common lib/compress lib/decompress lib/deprecated
 lib/dictBuilder lib/legacy programs tests zlibWrapper zlibWr...
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On Fri, Mar 23, 2018 at 08:46:36AM +0000, Ruslan Bukin wrote:
> On Sat, Mar 17, 2018 at 03:49:15PM -0600, Alan Somers wrote:
> >    On Tue, Mar 13, 2018 at 9:00 PM, Conrad Meyer <[1]cem@freebsd.org> wrote:
> > 
> >      Author: cem
> >      Date: Wed Mar 14 03:00:17 2018
> >      New Revision: 330894
> >      URL: [2]https://svnweb.freebsd.org/changeset/base/330894
> > 
> >      Log:
> >        Update to Zstandard 1.3.3
> > 
> >    I think this broke the build on RISC-V.  Could you please take a look?
> 
> I can confirm it breaks RISC-V
> 

I found the problem: after this commit kernel become slightly bigger: it was 0x5fd080 bytes, become 0x61b080 bytes.

Spike gives us 0x600000 free space only between start of physram to place where it puts DTB.
So DTB appears under our BSS section and we clear it during boot, so DTB is no longer valid and kernel get stuck in fdt header checking routine.

I'm currently looking for a solution and rearrangements, it will take some time.

Thanks

Ruslan