linux-kernel - Re: [PATCH 5/6] driver core: lift dma_default

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Date:   Mon, 22 Feb 2021 11:42:17 +0100 (CET)
From:   "Maciej W. Rozycki" <macro@...am.me.uk>
To:     Christoph Hellwig <hch@....de>
cc:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        iommu@...ts.linux-foundation.org
Subject: Re: [PATCH 5/6] driver core: lift dma_default_coherent into common
 code

On Mon, 22 Feb 2021, Christoph Hellwig wrote:

> > I haven't booted Linux on my Malta for a while now, but it turns out to 
> > work just fine, and your patch set does not regress it booting multi-user 
> > NFS-rooted over FDDI.
> > 
> >  I note however that the system does not reboot properly:
> > 
> > sd 0:0:0:0: [sda] Synchronizing SCSI cache
> > reboot: Restarting system
> > Reboot failed -- System halted
> > 
> > which is a regression, and also the MMIO-mapped discrete CBUS UART (ttyS2) 
> > does not sign in anymore either:
> 
> Do you mean a regression with this series, or just compared to when you
> last tested?

 When last tested.  Years ago, so nothing for you to be concerned.  I'll 
look into it sometime unless someone beats me to.  Don't hold your breath 
though.  Sorry to be unclear.

  Maciej