From dd7e55a8848cee1e8fd5741f27dc59db08cc65b8 Mon Sep 17 00:00:00 2001 From: Stewart Hildebrand Date: Thu, 24 Jul 2025 13:43:48 -0400 Subject: [PATCH] iommu: restrict scratch page quarantining to x86 All IOMMU_QUARANTINE_* options are exposed on Arm since 163c6b589879 ("xen/arm: pci: introduce PCI_PASSTHROUGH Kconfig option"). However, only NONE and BASIC are implemented in any Arm iommu driver since 63919fc4d1ca ("xen/arm: smmuv3: Add PCI devices support for SMMUv3") and ca8f6ffeb6e3 ("xen/arm: smmuv2: Add PCI devices support for SMMUv2"). SCRATCH_PAGE is not yet implemented in any Arm iommu driver. Restrict scratch page quarantining to x86 for now. Reported-by: Jan Beulich Signed-off-by: Stewart Hildebrand Acked-by: Stefano Stabellini --- xen/drivers/passthrough/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/xen/drivers/passthrough/Kconfig b/xen/drivers/passthrough/Kconfig index 78edd80536..11aece5f7b 100644 --- a/xen/drivers/passthrough/Kconfig +++ b/xen/drivers/passthrough/Kconfig @@ -90,4 +90,5 @@ choice bool "basic" config IOMMU_QUARANTINE_SCRATCH_PAGE bool "scratch page" + depends on X86 endchoice