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From: Sergiy Kibrik <sergiy_kibrik@epam.com>
To: Andrew Cooper <andrew.cooper3@citrix.com>,
	xen-devel@lists.xenproject.org
Cc: "Jan Beulich" <jbeulich@suse.com>,
	"Roger Pau Monné" <roger.pau@citrix.com>,
	"Xenia Ragiadakou" <xenia.ragiadakou@amd.com>,
	"Stefano Stabellini" <sstabellini@kernel.org>
Subject: Re: [XEN PATCH v1 15/15] x86/hvm: make AMD-V and Intel VT-x support configurable
Date: Tue, 16 Apr 2024 13:16:42 +0300	[thread overview]
Message-ID: <ddef1318-1524-43ce-a9c8-6017d9c2abc8@epam.com> (raw)
In-Reply-To: <bbae1c9d-4c86-415a-963b-a17ff4f3fa4b@citrix.com>

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


      reply	other threads:[~2024-04-16 10:17 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-04-16  6:50 [XEN PATCH v1 15/15] x86/hvm: make AMD-V and Intel VT-x support configurable Sergiy Kibrik
2024-04-16  8:40 ` Teddy Astie
2024-04-16 10:12   ` Sergiy Kibrik
2024-04-16  9:36 ` Andrew Cooper
2024-04-16 10:16   ` Sergiy Kibrik [this message]

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