* [xen/arm]: Mapping physical memory to dom0/domU
@ 2019-05-29 14:06 ` Lukas Jünger
0 siblings, 0 replies; 4+ messages in thread
From: Lukas Jünger @ 2019-05-29 14:06 UTC (permalink / raw)
To: xen-devel
[-- Attachment #1.1: Type: text/plain, Size: 332 bytes --]
Hi all,
Is there a way to map a region of physical memory to dom0/domU?
Let's say I have a custom device mapped at that memory region and I want
either dom0 or a domU to have full access to this device.
There seems to be a way to share memory between dom0 and a domU, maybe
also between domU and domU.
Thanks,
Lukas
[-- Attachment #1.2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 5388 bytes --]
[-- Attachment #2: Type: text/plain, Size: 157 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
* [Xen-devel] [xen/arm]: Mapping physical memory to dom0/domU
@ 2019-05-29 14:06 ` Lukas Jünger
0 siblings, 0 replies; 4+ messages in thread
From: Lukas Jünger @ 2019-05-29 14:06 UTC (permalink / raw)
To: xen-devel
[-- Attachment #1.1: Type: text/plain, Size: 332 bytes --]
Hi all,
Is there a way to map a region of physical memory to dom0/domU?
Let's say I have a custom device mapped at that memory region and I want
either dom0 or a domU to have full access to this device.
There seems to be a way to share memory between dom0 and a domU, maybe
also between domU and domU.
Thanks,
Lukas
[-- Attachment #1.2: S/MIME Cryptographic Signature --]
[-- Type: application/pkcs7-signature, Size: 5388 bytes --]
[-- Attachment #2: Type: text/plain, Size: 157 bytes --]
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [xen/arm]: Mapping physical memory to dom0/domU
@ 2019-06-03 15:16 ` Julien Grall
0 siblings, 0 replies; 4+ messages in thread
From: Julien Grall @ 2019-06-03 15:16 UTC (permalink / raw)
To: Lukas Jünger, xen-devel
On 29/05/2019 15:06, Lukas Jünger wrote:
> Hi all,
Hi,
> Is there a way to map a region of physical memory to dom0/domU?
Yes, you can use the option 'iomem'.
> Let's say I have a custom device mapped at that memory region and I want either
> dom0 or a domU to have full access to this device.
The page [1] will give you instruction how to passthrough a device.
> There seems to be a way to share memory between dom0 and a domU, maybe also
> between domU and domU.
This can be done dynamically using grant-table. There are patches on the ML for
static sharing.
Cheers,
>
> Thanks,
> Lukas
[1] https://xenbits.xen.org/docs/unstable/misc/arm/passthrough.txt
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xenproject.org
> https://lists.xenproject.org/mailman/listinfo/xen-devel
>
--
Julien Grall
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [Xen-devel] [xen/arm]: Mapping physical memory to dom0/domU
@ 2019-06-03 15:16 ` Julien Grall
0 siblings, 0 replies; 4+ messages in thread
From: Julien Grall @ 2019-06-03 15:16 UTC (permalink / raw)
To: Lukas Jünger, xen-devel
On 29/05/2019 15:06, Lukas Jünger wrote:
> Hi all,
Hi,
> Is there a way to map a region of physical memory to dom0/domU?
Yes, you can use the option 'iomem'.
> Let's say I have a custom device mapped at that memory region and I want either
> dom0 or a domU to have full access to this device.
The page [1] will give you instruction how to passthrough a device.
> There seems to be a way to share memory between dom0 and a domU, maybe also
> between domU and domU.
This can be done dynamically using grant-table. There are patches on the ML for
static sharing.
Cheers,
>
> Thanks,
> Lukas
[1] https://xenbits.xen.org/docs/unstable/misc/arm/passthrough.txt
>
>
> _______________________________________________
> Xen-devel mailing list
> Xen-devel@lists.xenproject.org
> https://lists.xenproject.org/mailman/listinfo/xen-devel
>
--
Julien Grall
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xenproject.org
https://lists.xenproject.org/mailman/listinfo/xen-devel
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2019-06-03 15:17 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-05-29 14:06 [xen/arm]: Mapping physical memory to dom0/domU Lukas Jünger
2019-05-29 14:06 ` [Xen-devel] " Lukas Jünger
2019-06-03 15:16 ` Julien Grall
2019-06-03 15:16 ` [Xen-devel] " Julien Grall
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.