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[PATCH 13/20] xen/arm: vsmmuv3: Add "iommus" property node for dom0 devices
- To: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Milan Djokic <milan_djokic@xxxxxxxx>
- Date: Thu, 7 Aug 2025 16:59:28 +0000
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- Cc: Rahul Singh <rahul.singh@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Milan Djokic <milan_djokic@xxxxxxxx>
- Delivery-date: Thu, 07 Aug 2025 18:31:50 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHcB7yjZjfsfeySMU+j/Wtm9iEvHQ==
- Thread-topic: [PATCH 13/20] xen/arm: vsmmuv3: Add "iommus" property node for dom0 devices
From: Rahul Singh <rahul.singh@xxxxxxx>
"iommus" property will be added for dom0 devices to virtual
IOMMU node to enable the dom0 linux kernel to configure the IOMMU
Signed-off-by: Rahul Singh <rahul.singh@xxxxxxx>
Signed-off-by: Milan Djokic <milan_djokic@xxxxxxxx>
---
xen/arch/arm/domain_build.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/xen/arch/arm/domain_build.c b/xen/arch/arm/domain_build.c
index 50e4f5fee4..9d2b0ea928 100644
--- a/xen/arch/arm/domain_build.c
+++ b/xen/arch/arm/domain_build.c
@@ -537,9 +537,12 @@ static int __init write_properties(struct domain *d,
struct kernel_info *kinfo,
continue;
}
- if ( iommu_node )
+ /*
+ * Expose IOMMU specific properties to hwdom when vIOMMU is
+ * enabled.
+ */
+ if ( iommu_node && !is_viommu_enabled() )
{
- /* Don't expose IOMMU specific properties to hwdom */
if ( dt_property_name_is_equal(prop, "iommus") )
continue;
--
2.43.0
|
