From: Jan Beulich <jbeulich@suse.com>
To: Jason Andryuk <jason.andryuk@amd.com>
Cc: "Christian Lindig" <christian.lindig@citrix.com>,
"David Scott" <dave@recoil.org>,
"Anthony PERARD" <anthony.perard@vates.tech>,
"Andrew Cooper" <andrew.cooper3@citrix.com>,
"Michal Orzel" <michal.orzel@amd.com>,
"Julien Grall" <julien@xen.org>,
"Roger Pau Monné" <roger.pau@citrix.com>,
"Stefano Stabellini" <sstabellini@kernel.org>,
"Bertrand Marquis" <bertrand.marquis@arm.com>,
"Volodymyr Babchuk" <Volodymyr_Babchuk@epam.com>,
"Daniel P. Smith" <dpsmith@apertussolutions.com>,
xen-devel@lists.xenproject.org
Subject: Re: [PATCH 3/4] xen: Add DOMAIN_CAPS_DEVICE_MODEL & XEN_DOMCTL_CDF_device_model
Date: Wed, 11 Jun 2025 15:24:10 +0200 [thread overview]
Message-ID: <af247ba8-150f-4c19-b332-2bf5f53a81a5@suse.com> (raw)
In-Reply-To: <20250610225737.469690-4-jason.andryuk@amd.com>
On 11.06.2025 00:57, Jason Andryuk wrote:
> To add more flexibility in system configuration add the new
> DOMAIN_CAPS_DEVICE_MODEL flag and XEN_DOMCTL_CDF_device_model.
>
> Thie new flag corresponds to allowing XSM_DM_PRIV for the domain. This
> will enable running device model emulators (QEMU) from the assigne
> domain for multiple target domains.
>
> Stubdoms assign target allowing the stubdom to serve as the device
> model for a single domain. This new flag allows the single domain to
> provide emulators for multiple guests.
>
> The specific scenario is a disaggregated system with the hardware domain
> providing device models for muitple guest domains.
Why the hardware domain? Unless a DM also needs access to some of the
physical hardware, it ought to run in a separate domain. Conceivably
such a domain could service multiply guests, so maybe the "single
target" concept presently used for stubdom simply needed extending?
Jan
next prev parent reply other threads:[~2025-06-11 13:24 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-10 22:57 [PATCH 0/4] XSM changes for split hardware / control domain Jason Andryuk
2025-06-10 22:57 ` [PATCH 1/4] xen/xsm: Add XSM_HW_PRIV Jason Andryuk
2025-06-11 13:02 ` Jan Beulich
2025-06-11 3:13 ` Jason Andryuk
2025-06-12 7:36 ` Jan Beulich
2025-06-12 17:31 ` Jason Andryuk
2025-06-10 22:57 ` [PATCH 2/4] xsm/silo: Support hwdom/control domains Jason Andryuk
2025-06-11 13:17 ` Jan Beulich
2025-06-11 4:20 ` Jason Andryuk
2025-06-12 7:52 ` Jan Beulich
2025-06-12 16:56 ` Jason Andryuk
2025-06-12 20:30 ` Jason Andryuk
2025-06-13 6:20 ` Jan Beulich
2025-06-10 22:57 ` [PATCH 3/4] xen: Add DOMAIN_CAPS_DEVICE_MODEL & XEN_DOMCTL_CDF_device_model Jason Andryuk
2025-06-11 8:25 ` Christian Lindig
2025-06-11 13:24 ` Jan Beulich [this message]
2025-06-11 4:35 ` Jason Andryuk
2025-06-13 22:47 ` Stefano Stabellini
2025-06-13 23:44 ` Demi Marie Obenour
2025-06-14 0:15 ` Stefano Stabellini
2025-06-16 5:58 ` Jan Beulich
2025-06-17 0:21 ` Stefano Stabellini
2025-06-10 22:57 ` [PATCH 4/4] xsm/dummy: Allow hwdom SYSCTL_readconsole/physinfo Jason Andryuk
2025-06-11 13:27 ` Jan Beulich
2025-06-11 4:48 ` Jason Andryuk
2025-06-13 22:51 ` Stefano Stabellini
2025-06-16 6:36 ` Jan Beulich
2025-06-17 0:10 ` Stefano Stabellini
2025-06-17 5:23 ` Jan Beulich
2025-06-19 0:36 ` Stefano Stabellini
2025-06-20 6:05 ` Jan Beulich
2025-07-07 21:52 ` Stefano Stabellini
2025-06-11 13:28 ` [PATCH 0/4] XSM changes for split hardware / control domain Jan Beulich
2025-06-11 5:08 ` Jason Andryuk
2025-06-12 7:33 ` Jan Beulich
2025-06-13 22:59 ` Stefano Stabellini
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