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From: "Christian König" <deathsimple@vodafone.de>
To: helgaas@kernel.org, linux-pci@vger.kernel.org,
	dri-devel@lists.freedesktop.org,
	platform-driver-x86@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Resizeable PCI BAR support V4
Date: Tue, 25 Apr 2017 15:19:50 +0200	[thread overview]
Message-ID: <1493126394-1239-1-git-send-email-deathsimple@vodafone.de> (raw)

Hi everyone,

This is the fourth 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.

Some changes since V3:
1. A lot of minor style cleanups.
2. Make internal  functions for changing BARs directly private to the PCI subsystem.
3. Fail if any BAR is still in use when we try to change it.
4. Handle intermediate bridges as well.
5. Print some more messages when changing something.

Please review and/or comment,
Christian.

             reply	other threads:[~2017-04-25 13:20 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-25 13:19 Christian König [this message]
2017-04-25 13:19 ` [PATCH 1/4] PCI: add resizeable BAR infrastructure v4 Christian König
2017-04-25 15:00   ` Alex Deucher
2017-04-26 16:45   ` Andy Shevchenko
2017-05-02 14:56     ` Christian König
2017-04-25 13:19 ` [PATCH 2/4] PCI: add functionality for resizing resources v3 Christian König
2017-04-26 17:00   ` Andy Shevchenko
2017-05-02 15:51     ` Christian König
2017-05-02 20:27       ` Andy Shevchenko
2017-05-04  9:23     ` Christian König
2017-05-04 10:15       ` Andy Shevchenko
2017-05-04 16:44         ` Andy Shevchenko
2017-04-25 13:19 ` [PATCH 3/4] x86/PCI: Enable a 64bit BAR on AMD Family 15h (Models 30h-3fh) Processors v2 Christian König
2017-04-25 15:00   ` Alex Deucher
2017-04-26 17:18   ` Andy Shevchenko
2017-04-25 13:19 ` [PATCH 4/4] drm/amdgpu: resize VRAM BAR for CPU access v2 Christian König
2017-04-25 14:34   ` Alex Deucher
2017-04-25 15:09     ` Christian König
2017-04-25 15:14       ` Alex Deucher
2017-04-25 16:22         ` Christian König
2017-04-25 16:29           ` Alex Deucher
2017-04-25 14:25 ` Resizeable PCI BAR support V4 Andy Shevchenko

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