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Re: [PATCH v2 11/15] vtd: Rewrite igd device check in acpi_parse_dev_scope()
- To: Teddy Astie <teddy.astie@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 22 Jun 2026 13:31:18 +0200
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- Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Mon, 22 Jun 2026 11:31:37 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 18.06.2026 16:50, Teddy Astie wrote:
> --- a/xen/drivers/passthrough/vtd/dmar.c
> +++ b/xen/drivers/passthrough/vtd/dmar.c
> @@ -389,7 +389,7 @@ static int __init acpi_parse_dev_scope(
> PCI_CLASS_DEVICE + 1) != 0x03
> /* PCI_BASE_CLASS_DISPLAY */ )
> gfx_only = false;
> - else if ( !seg && !dev_sbdf.bus && path->dev == 2 &&
> !path->fn )
> + else if ( dev_sbdf.sbdf == PCI_SBDF(0, 0, 2, 0).sbdf )
> igd_drhd_address = drhd->address;
> }
Just like we have mfn_eq() and gfn_eq(), should we perhaps also have a
(typesafe)
sbdf_eq() for use e.g. here?
Jan
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