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Re: [XEN PATCH v1 15/15] x86/hvm: make AMD-V and Intel VT-x support configurable
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- From: Sergiy Kibrik <sergiy_kibrik@xxxxxxxx>
- Date: Tue, 16 Apr 2024 13:16:42 +0300
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- Cc: Jan Beulich <jbeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Xenia Ragiadakou <xenia.ragiadakou@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>
- Delivery-date: Tue, 16 Apr 2024 10:17:05 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
16.04.24 12:36, Andrew Cooper:
Everything else seems ok, but there's no inherent dependency between
VMX/SVM and IOMMUs. There are certain features (HAP/IOMMU pagetable
sharing, posted interrupts) which do depend on both, but the vast
majority of functionality is independent.
It would be a legitimate config (although getting less plausible, these
days) to have PV && IOMMU && !HVM.
Furthermore, randconfig will do a better job without such restrictions
in place.
understood. I'll make a patch instead to guard posted interrupts calls
from iommu driver.
-Sergiy
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