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Re: [PATCH v4 1/5] x86/PCI: avoid re-evaluation of extended config space accessibility
- To: Jan Beulich <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
- Date: Tue, 10 Feb 2026 10:59:58 -0500
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
- Delivery-date: Tue, 10 Feb 2026 16:00:16 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 2/10/26 05:52, Jan Beulich wrote:
> When, during boot, we have already correctly determined availability of
> the MMCFG access method for a given bus range, there's then no need to
> invoke pci_check_extcfg() again for every of the devices. This in
> particular avoids ->ext_cfg to transiently indicate the wrong state.
>
> Switch to using Xen style on lines being touched and immediately adjacent
> ones.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> Acked-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
Reviewed-by: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
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