netdev - Re: [PATCH v2 0/2] bnx2: Wait for in-flight DMA to complete at probe stage

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Message-ID: <20161114091059.GB5845@x1>
Date:   Mon, 14 Nov 2016 17:10:59 +0800
From:   Baoquan He <bhe@...hat.com>
To:     Paul Menzel <pmenzel@...gen.mpg.de>
Cc:     netdev@...r.kernel.org, michael.chan@...adcom.com,
        davem@...emloft.net, linux-kernel@...r.kernel.org,
        Dept-GELinuxNICDev@...ium.com, rasesh.mody@...ium.com,
        harish.patil@...ium.com, frank@...ermydesk.org, jsr@....edzone.net,
        jroedel@...e.de, dyoung@...hat.com
Subject: Re: [PATCH v2 0/2] bnx2: Wait for in-flight DMA to complete at probe
 stage

On 11/14/16 at 09:25am, Paul Menzel wrote:
> Dear Baoquan,
> 
> On 11/13/16 06:01, Baoquan He wrote:
> > This is v2 post.
> > 
> > In commit 3e1be7a ("bnx2: Reset device during driver initialization"),
> > firmware requesting code was moved from open stage to probe stage.
> > The reason is in kdump kernel hardware iommu need device be reset in
> > driver probe stage, otherwise those in-flight DMA from 1st kernel
> > will continue going and look up into the newly created io-page tables.
> > However bnx2 chip resetting involves firmware requesting issue, that
> > need be done in open stage.
> > 
> > Michale Chan suggested we can just wait for the old in-flight DMA to
> > complete at probe stage, then though without device resetting, we
> > don't need to worry the old in-flight DMA could continue looking up
> > the newly created io-page tables.
> > 
> > v1->v2:
> >     Michael suggested to wait for the in-flight DMA to complete at probe
> >     stage. So give up the old method of trying to reset chip at probe
> >     stage, take the new way accordingly.
> 
> thank you for posting the updated series. Could you please resend a v3 with
> stable@...r.kernel.org added [1]?

I can add it like:
Cc: <stable@...r.kernel.org> # 4.8.7

Only v4.8.7, right?

Thanks
Baoquan