linux-kernel - Re: [PATCH] uio-hv-generic: store physical addresses instead of virtual

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Message-ID: <3783097.3X8RYproPn@wuerfel>
Date:   Fri, 09 Dec 2016 21:38:16 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Stephen Hemminger <stephen@...workplumber.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        netdev@...r.kernel.org, Haiyang Zhang <haiyangz@...rosoft.com>,
        linux-kernel@...r.kernel.org, devel@...uxdriverproject.org
Subject: Re: [PATCH] uio-hv-generic: store physical addresses instead of virtual

On Friday, December 9, 2016 9:28:44 AM CET Stephen Hemminger wrote:
> On Fri,  9 Dec 2016 12:44:40 +0100
> Arnd Bergmann <arnd@...db.de> wrote:

> > Fixes: 95096f2fbd10 ("uio-hv-generic: new userspace i/o driver for VMBus")
> > Signed-off-by: Arnd Bergmann <arnd@...db.de>
> 
> Thanks, the code was inherited from outside, and only tested on x86_64.
> Not sure which platform and GCC version generates the warning, was this just W=1?
> 
> Acked-by: Stephen Hemminger <sthemmin@...rosoft.com>

This was a regular warning with a randconfig build on arm32, but
it happens on any 32-bit architecture when CONFIG_PHYS_ADDR_T_64BIT
is enabled.

	Arnd