From: Julien Grall <julien@xen.org>
To: Stefano Stabellini <sstabellini@kernel.org>,
xen-devel@lists.xenproject.org
Cc: Artem_Mygaiev@epam.com, peng.fan@nxp.com,
andrew.cooper3@citrix.com, George.Dunlap@citrix.com,
Bertrand.Marquis@arm.com, jbeulich@suse.com,
Volodymyr_Babchuk@epam.com
Subject: Re: [PATCH 0/12] direct-map DomUs
Date: Thu, 16 Apr 2020 09:59:27 +0100 [thread overview]
Message-ID: <4a62c7c1-710f-21a9-a6cc-03aa290e18b1@xen.org> (raw)
In-Reply-To: <alpine.DEB.2.21.2004141746350.8746@sstabellini-ThinkPad-T480s>
On 15/04/2020 02:02, Stefano Stabellini wrote:
> Hi all,
>
> This series adds support for 1:1 mapping (guest physical == physical)
> the memory of dom0less domUs. The memory ranges assigned to a domU can be
> explicitly chosen by the user at boot time.
>
> This is desirable in cases where an IOMMU is not present in the system,
> or it cannot be used. For instance, it might not be usable because it
> doesn't cover a specific device, or because it doesn't have enough
> bandwidth, or because it adds too much latency. In these cases, the user
> should use a MPU to protect the memory in the system (e.g. the Xilinx
> XMPU), configuring it with the chosen address ranges.
>
> Cheers,
>
> Stefano
>
>
>
> The following changes since commit 7372466b21c3b6c96bb7a52754e432bac883a1e3:
>
> x86/mem_sharing: Fix build with !CONFIG_XSM (2020-04-10 15:20:10 +0100)
>
> are available in the Git repository at:
>
> http://xenbits.xenproject.org/git-http/people/sstabellini/xen-unstable.git direct-map-1
>
> for you to fetch changes up to 43503720ab6851a28a66fdd067f592d5354ae83a:
>
> xen/arm: call iomem_permit_access for passthrough devices (2020-04-14 17:42:21 -0700)
>
> ----------------------------------------------------------------
> Stefano Stabellini (12):
> xen: introduce xen_dom_flags
> xen/arm: introduce arch_xen_dom_flags and direct_map
> xen/arm: introduce 1:1 mapping for domUs
> xen: split alloc_heap_pages in two halves for reusability
> xen: introduce reserve_heap_pages
> xen/arm: reserve 1:1 memory for direct_map domUs
> xen/arm: new vgic: rename vgic_cpu/dist_base to c/dbase
> xen/arm: if is_domain_direct_mapped use native addresses for GICv2
> xen/arm: if is_domain_direct_mapped use native addresses for GICv3
> xen/arm: if is_domain_direct_mapped use native UART address for vPL011
The 3 patches above cover addresses but not interrupts. Why?
Cheers,
--
Julien Grall
next prev parent reply other threads:[~2020-04-16 8:59 UTC|newest]
Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-15 1:02 [PATCH 0/12] direct-map DomUs Stefano Stabellini
2020-04-15 1:02 ` [PATCH 01/12] xen: introduce xen_dom_flags Stefano Stabellini
2020-04-15 9:12 ` Jan Beulich
2020-04-15 13:26 ` Julien Grall
2020-04-29 23:57 ` Stefano Stabellini
2020-04-15 1:02 ` [PATCH 02/12] xen/arm: introduce arch_xen_dom_flags and direct_map Stefano Stabellini
2020-04-15 10:27 ` Jan Beulich
2020-04-15 11:27 ` Andrew Cooper
2020-04-30 0:34 ` Stefano Stabellini
2020-04-15 1:02 ` [PATCH 03/12] xen/arm: introduce 1:1 mapping for domUs Stefano Stabellini
2020-04-15 13:36 ` Julien Grall
2020-05-01 1:26 ` Stefano Stabellini
2020-05-01 8:30 ` Julien Grall
2020-05-09 0:07 ` Stefano Stabellini
2020-05-09 9:56 ` Julien Grall
2020-04-15 1:02 ` [PATCH 04/12] xen: split alloc_heap_pages in two halves for reusability Stefano Stabellini
2020-04-15 11:22 ` Wei Liu
2020-04-17 10:02 ` Jan Beulich
2020-04-29 23:09 ` Stefano Stabellini
2020-04-15 1:02 ` [PATCH 05/12] xen: introduce reserve_heap_pages Stefano Stabellini
2020-04-15 13:24 ` Julien Grall
2020-04-17 10:11 ` Jan Beulich
2020-04-29 22:46 ` Stefano Stabellini
2020-04-30 6:29 ` Jan Beulich
2020-04-30 16:21 ` Stefano Stabellini
2020-05-04 9:16 ` Jan Beulich
2020-04-30 14:51 ` Julien Grall
2020-04-30 17:00 ` Stefano Stabellini
2020-04-30 18:27 ` Julien Grall
2020-05-12 1:10 ` Stefano Stabellini
2020-05-12 8:57 ` Julien Grall
2020-04-15 1:02 ` [PATCH 06/12] xen/arm: reserve 1:1 memory for direct_map domUs Stefano Stabellini
2020-04-15 13:38 ` Julien Grall
2020-04-15 1:02 ` [PATCH 07/12] xen/arm: new vgic: rename vgic_cpu/dist_base to c/dbase Stefano Stabellini
2020-04-15 13:41 ` Julien Grall
2020-04-15 1:02 ` [PATCH 08/12] xen/arm: if is_domain_direct_mapped use native addresses for GICv2 Stefano Stabellini
2020-04-15 14:00 ` Julien Grall
2020-05-01 1:26 ` Stefano Stabellini
2020-05-01 8:23 ` Julien Grall
2020-05-09 0:06 ` Stefano Stabellini
2020-04-15 1:02 ` [PATCH 09/12] xen/arm: if is_domain_direct_mapped use native addresses for GICv3 Stefano Stabellini
2020-04-15 14:09 ` Julien Grall
2020-05-01 1:31 ` Stefano Stabellini
2020-05-01 8:40 ` Julien Grall
2020-05-09 0:06 ` Stefano Stabellini
2020-04-15 1:02 ` [PATCH 10/12] xen/arm: if is_domain_direct_mapped use native UART address for vPL011 Stefano Stabellini
2020-04-15 14:11 ` Julien Grall
2020-05-01 1:26 ` Stefano Stabellini
2020-05-01 8:09 ` Julien Grall
2020-05-09 0:07 ` Stefano Stabellini
2020-05-09 10:11 ` Julien Grall
2020-05-11 22:58 ` Stefano Stabellini
2020-04-15 1:02 ` [PATCH 11/12] xen/arm: if xen_force don't try to setup the IOMMU Stefano Stabellini
2020-04-15 14:12 ` Julien Grall
2020-04-29 21:55 ` Stefano Stabellini
2020-04-30 13:51 ` Julien Grall
2020-05-01 1:25 ` Stefano Stabellini
2020-04-15 1:02 ` [PATCH 12/12] xen/arm: call iomem_permit_access for passthrough devices Stefano Stabellini
2020-04-15 14:18 ` Julien Grall
2020-04-29 20:47 ` Stefano Stabellini
2020-04-30 13:01 ` Julien Grall
2020-05-24 14:12 ` Julien Grall
2020-05-26 16:46 ` Stefano Stabellini
2020-05-27 18:09 ` Julien Grall
2020-04-16 8:59 ` Julien Grall [this message]
2020-04-29 20:16 ` [PATCH 0/12] direct-map DomUs Stefano Stabellini
2020-04-30 12:54 ` Julien Grall
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