linux-kernel - Re: [PATCH v2 0/2] PCI: Avoid capability searches in save/restore state

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Message-ID: <20250218224655.GA198400@bhelgaas>
Date: Tue, 18 Feb 2025 16:46:55 -0600
From: Bjorn Helgaas <helgaas@...nel.org>
To: linux-pci@...r.kernel.org
Cc: Alex Williamson <alex.williamson@...hat.com>,
	Christian König <ckoenig.leichtzumerken@...il.com>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH v2 0/2] PCI: Avoid capability searches in save/restore
 state

On Fri, Feb 14, 2025 at 06:02:59PM -0600, Bjorn Helgaas wrote:
> From: Bjorn Helgaas <bhelgaas@...gle.com>
> 
> Reduce the number of times we search config space for PCI capabilities when
> saving and restoring device state.
> 
> Bjorn Helgaas (2):
>   PCI: Avoid pointless capability searches
>   PCI: Cache offset of Resizable BAR capability
> 
>  drivers/pci/pci.c       | 36 +++++++++++++++++++++---------------
>  drivers/pci/pci.h       |  1 +
>  drivers/pci/pcie/aspm.c | 15 ++++++++-------
>  drivers/pci/probe.c     |  1 +
>  include/linux/pci.h     |  1 +
>  5 files changed, 32 insertions(+), 22 deletions(-)
> 
> v2 changes:
>   - Drop VC change that broke saving state (thanks, Ilpo)
> 
> v1: https://lore.kernel.org/r/20250208050329.1092214-1-helgaas@kernel.org

Applied to pci/enumeration with Ilpo's reviewed-by for v6.15.