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Re: [RFC PATCH 14/21] xen/arm: vIOMMU: IOMMU device tree node for dom0
- To: Rahul Singh <rahul.singh@xxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Stewart Hildebrand <stewart.hildebrand@xxxxxxx>
- Date: Sat, 14 Jan 2023 12:14:26 -0500
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- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
- Delivery-date: Sat, 14 Jan 2023 17:14:49 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 12/1/22 11:02, Rahul Singh wrote:
> XEN will create an IOMMU device tree node in the device tree
> to enable the dom0 to discover the virtual SMMUv3 during dom0 boot.
> IOMMU device tree node will only be created when cmdline option viommu
> is enabled.
>
> Signed-off-by: Rahul Singh <rahul.singh@xxxxxxx>
> ---
> xen/arch/arm/domain_build.c | 94 +++++++++++++++++++++++++++++++
> xen/arch/arm/include/asm/viommu.h | 1 +
> 2 files changed, 95 insertions(+)
>
> diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
> index a5295e8c3e..b82121beb5 100644
> --- a/xen/arch/arm/domain_build.c
> +++ b/xen/arch/arm/domain_build.c
> @@ -2233,6 +2233,95 @@ int __init make_chosen_node(const struct kernel_info
> *kinfo)
> return res;
> }
>
> +#ifdef CONFIG_VIRTUAL_IOMMU
> +static int make_hwdom_viommu_node(const struct kernel_info *kinfo)
This should have the __init attribute
|
