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Re: [PATCH] xen/arm: vITS: add #msi-cells property
- To: Stewart Hildebrand <Stewart.Hildebrand@xxxxxxx>
- From: Rahul Singh <Rahul.Singh@xxxxxxx>
- Date: Mon, 5 Aug 2024 14:42:35 +0000
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- Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <Bertrand.Marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Mon, 05 Aug 2024 14:43:04 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
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- Thread-topic: [PATCH] xen/arm: vITS: add #msi-cells property
Hi Stewart,
> On 2 Aug 2024, at 7:26 PM, Stewart Hildebrand <Stewart.Hildebrand@xxxxxxx>
> wrote:
>
> Non-PCI platform devices may use the ITS. Dom0 Linux drivers for such
> devices are failing to register IRQs due to a missing #msi-cells
> property. Add the missing #msi-cells property.
>
> Signed-off-by: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
Reviewed-by: Rahul Singh <rahul.singh@xxxxxxx>
Regards,
Rahul
> ---
> See Linux dc4dae00d82f ("Docs: dt: add #msi-cells to GICv3 ITS binding")
> ---
> xen/arch/arm/gic-v3-its.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/xen/arch/arm/gic-v3-its.c b/xen/arch/arm/gic-v3-its.c
> index 8afcd9783bc8..55bed3fe87d0 100644
> --- a/xen/arch/arm/gic-v3-its.c
> +++ b/xen/arch/arm/gic-v3-its.c
> @@ -951,6 +951,10 @@ int gicv3_its_make_hwdom_dt_nodes(const struct domain *d,
> if ( res )
> return res;
>
> + res = fdt_property_cell(fdt, "#msi-cells", 1);
> + if ( res )
> + return res;
> +
> if ( its->phandle )
> {
> res = fdt_property_cell(fdt, "phandle", its->phandle);
>
> base-commit: 984cb316cb27b53704c607e640a7dd2763b898ab
> --
> 2.45.2
>
>
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