linux-kernel - Re: Resizeable PCI BAR support v5

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Message-ID: <CAHp75VcrKTirCH6gHj1DoLzz5JhfzpvVb34M9e5-OQOjO4Mymw@mail.gmail.com>
Date:   Sun, 7 May 2017 13:50:07 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Christian König <deathsimple@...afone.de>
Cc:     "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        Bjorn Helgaas <helgaas@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: Resizeable PCI BAR support v5

On Thu, May 4, 2017 at 12:31 PM, Christian König
<deathsimple@...afone.de> wrote:
> Hi everyone,
>
> this is the fifth incarnation of this set of patches. It enables device
> drivers to resize and most likely also relocate the PCI BAR of devices
> they manage to allow the CPU to access all of the device local memory at once.
>
> This is very useful for GFX device drivers where the default PCI BAR is only
> about 256MB in size for compatibility reasons, but the device easily have
> multiple gigabyte of local memory.
>
> Noteable changed compared to v4:
> 1. Patch #1 is new and a minor cleanup to the PCI code.
> 2. Some more helpers added to patch #2
> 3. We now print a note to syslog before releasing resources.
> 4. Add defines for registers and bits used to add new root hub window.
>
> I've addressed mostly every review comment I've got so far and it looks like we
> are getting closer to landing this. Any more suggestions/hints how we could
> improve the patchset would be very welcome.
>

Thanks for an update.

I'm going to comment individual patches.

Just for the future, please use versioning in the patches themselves
(hint: -vX to git-format-patch).

-- 
With Best Regards,
Andy Shevchenko