linux-kernel - Re: [PATCH 4.14 00/31] 4.14.1-stable review

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Message-ID: <20171121170914.GA21561@kroah.com>
Date:   Tue, 21 Nov 2017 18:09:14 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     Ben Hutchings <ben.hutchings@...ethink.co.uk>
Cc:     Guenter Roeck <linux@...ck-us.net>, linux-kernel@...r.kernel.org,
        torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
        shuahkh@....samsung.com, patches@...nelci.org,
        stable@...r.kernel.org
Subject: Re: [PATCH 4.14 00/31] 4.14.1-stable review

On Tue, Nov 21, 2017 at 04:46:18PM +0000, Ben Hutchings wrote:
> On Tue, 2017-11-21 at 17:35 +0100, Greg Kroah-Hartman wrote:
> > On Tue, Nov 21, 2017 at 03:26:10PM +0000, Ben Hutchings wrote:
> [...]
> > > Not all 32-bit configurations can provide cmpxchg64().  i40e's use of
> > > cmpxchg64() appears to be fixed by:
> > > 
> > > b74f571f59a8 i40e/i40evf: organize and re-number feature flags
> > > b48be9978e4b i40e: fix flags declaration
> > 
> > So without those patches, are any specific arches/configs broken for
> > 4.14?
> 
> 32-bit parisc is.

Ok, but that's a horrid hack on the i40e driver, it just happens to move
the bitfield to a 32bit variable.  Can't we just provide a "real"
cmpxchg64() for 32-bit parisc?  Or mark this driver as not buildable on
that platform?

I doubt anyone is doing 40gb networking on parisc :)

thanks,

greg k-h