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From: Simon Richter <Simon.Richter@hogyros.de>
To: linux-pci@vger.kernel.org
Cc: intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	Simon Richter <Simon.Richter@hogyros.de>
Subject: [PATCH 0/5] bridges without VGA support
Date: Wed, 18 Feb 2026 02:04:14 +0900	[thread overview]
Message-ID: <20260217170419.236739-1-Simon.Richter@hogyros.de> (raw)

Hi,

this allows bridges to refuse forwarding VGA, and reports this upwards as an
error, because we cannot set up valid decoding for the requested device in this
case.

I think it should be fine to leave VGA forwarding enabled on lower bridges if a
bridge closer to the root refused to enable forwarding, because no accesses can
reach there anyway.

   Simon

Simon Richter (5):
  vgaarb: pass vga_get errors to userspace
  vgaarb: pass errors from pci_set_vga_state up
  vgaarb: mark vga_get family as __must_check
  pci: check if VGA decoding was really activated
  pci: mark return value of pci_set_vga_state as __must_check

 drivers/pci/pci.c      |  6 ++++++
 drivers/pci/vgaarb.c   | 22 +++++++++++++++++++---
 include/linux/pci.h    |  2 +-
 include/linux/vgaarb.h |  9 +++++----
 4 files changed, 31 insertions(+), 8 deletions(-)


base-commit: 9702969978695d9a699a1f34771580cdbb153b33
-- 
2.47.3


             reply	other threads:[~2026-02-17 17:04 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-17 17:04 Simon Richter [this message]
2026-02-17 17:04 ` [PATCH 1/5] vgaarb: pass vga_get errors to userspace Simon Richter
2026-02-17 20:47   ` Claude review: " Claude Code Review Bot
2026-02-17 17:04 ` [PATCH 2/5] vgaarb: pass errors from pci_set_vga_state up Simon Richter
2026-02-17 20:47   ` Claude review: " Claude Code Review Bot
2026-02-17 17:04 ` [PATCH 3/5] vgaarb: mark vga_get family as __must_check Simon Richter
2026-02-17 20:47   ` Claude review: " Claude Code Review Bot
2026-02-17 17:04 ` [PATCH 4/5] pci: check if VGA decoding was really activated Simon Richter
2026-02-17 20:47   ` Claude review: " Claude Code Review Bot
2026-02-17 17:04 ` [PATCH 5/5] pci: mark return value of pci_set_vga_state as __must_check Simon Richter
2026-02-17 20:47   ` Claude review: " Claude Code Review Bot
2026-02-17 20:47 ` Claude review: bridges without VGA support Claude Code Review Bot

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