linux-kernel - Re: RISC-V nommu support v6

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Date:   Fri, 22 Nov 2019 18:19:14 -0800 (PST)
From:   Paul Walmsley <paul.walmsley@...ive.com>
To:     Christoph Hellwig <hch@....de>
cc:     Palmer Dabbelt <palmer@...ive.com>,
        Damien Le Moal <damien.lemoal@....com>,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: RISC-V nommu support v6

On Thu, 31 Oct 2019, Christoph Hellwig wrote:

> On Wed, Oct 30, 2019 at 01:21:21PM -0700, Paul Walmsley wrote:
> > I tried building this series from your git branch mentioned above, and 
> > booted it with a buildroot userspace built from your custom buildroot 
> > tree.  Am seeing some segmentation faults from userspace (below). 
> > 
> > Am still planning to merge your patches.
> > 
> > But I'm wondering whether you are seeing these segmentation faults also? 
> > Or is it something that might be specific to my test setup?
> 
> I just built a fresh image using make -j4 with that report and it works
> perfectly fine with my tree.

Another colleague just gave this a quick test, following your instructions 
as I did.  He encountered the same segmentation faulting issue.  Might be 
worth taking a look at this once v5.5-rc1 is released.  Could be a 
userspace issue, though.


- Paul