linux-kernel - Re: [PATCH 0/2] dma-mapping: update default segment_boundary

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Message-ID: <20200903032559.GA4517@Asurada-Nvidia>
Date:   Wed, 2 Sep 2020 20:26:00 -0700
From:   Nicolin Chen <nicoleotsuka@...il.com>
To:     Niklas Schnelle <schnelle@...ux.ibm.com>
Cc:     hch@....de, sfr@...b.auug.org.au, mpe@...erman.id.au,
        benh@...nel.crashing.org, paulus@...ba.org,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        rth@...ddle.net, ink@...assic.park.msu.ru, mattst88@...il.com,
        linux-alpha@...r.kernel.org, tony.luck@...el.com,
        fenghua.yu@...el.com, linux-ia64@...r.kernel.org,
        gerald.schaefer@...ux.ibm.com, hca@...ux.ibm.com,
        gor@...ux.ibm.com, borntraeger@...ibm.com,
        linux-s390@...r.kernel.org, davem@...emloft.net,
        sparclinux@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com,
        bp@...en8.de, x86@...nel.org, hpa@...or.com,
        James.Bottomley@...senPartnership.com, deller@....de,
        linux-parisc@...r.kernel.org
Subject: Re: [PATCH 0/2] dma-mapping: update default segment_boundary_mask

On Wed, Sep 02, 2020 at 10:13:12AM +0200, Niklas Schnelle wrote:
> On 9/2/20 12:16 AM, Nicolin Chen wrote:
> > These two patches are to update default segment_boundary_mask.
> > 
> > PATCH-1 fixes overflow issues in callers of dma_get_seg_boundary.
> > Previous version was a series: https://lkml.org/lkml/2020/8/31/1026
> > 
> > Then PATCH-2 sets default segment_boundary_mask to ULONG_MAX.
> > 
> > Nicolin Chen (2):
> >   dma-mapping: introduce dma_get_seg_boundary_nr_pages()
> >   dma-mapping: set default segment_boundary_mask to ULONG_MAX
> 
> I gave both of your patches a quick test ride on a couple of dev mainframes,
> both NVMe, ConnectX and virtio-pci devices all seems to work fine.
> I already commented on Christoph's mail that I like the helper approach,
> so as for s390 you can add my
> 
> Acked-by: Niklas Schnelle <schnelle@...ux.ibm.com>
 
Thanks for testing and the ack!