Juergen Gross 251e90e7e3 xen: don't require virtio with grants for non-PV guests ... Commit fa1f57421e ("xen/virtio: Enable restricted memory access using Xen grant mappings") introduced a new requirement for using virtio devices: the backend now needs to support the VIRTIO_F_ACCESS_PLATFORM feature. This is an undue requirement for non-PV guests, as those can be operated with existing backends without any problem, as long as those backends are running in dom0. Per default allow virtio devices without grant support for non-PV guests. On Arm require VIRTIO_F_ACCESS_PLATFORM for devices having been listed in the device tree to use grants. Add a new config item to always force use of grants for virtio. Fixes: fa1f57421e ("xen/virtio: Enable restricted memory access using Xen grant mappings") Reported-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> Tested-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # Arm64 guest using Xen Reviewed-by: Stefano Stabellini <sstabellini@kernel.org> Link: https://lore.kernel.org/r/20220622063838.8854-4-jgross@suse.com Signed-off-by: Juergen Gross <jgross@suse.com>		2022-08-01 07:43:03 +02:00
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arm	arm/xen: Assign xen-grant DMA ops for xen-grant DMA devices	2022-06-06 16:07:30 +02:00
interface	xen: sync xs_wire.h header with upstream xen	2022-05-19 14:44:05 +02:00
acpi.h	xen: Remove support for PV ACPI cpu/memory hotplug	2021-04-23 09:31:50 +02:00
balloon.h	xen/balloon: Bring alloc(free)_xenballooned_pages helpers back	2022-01-06 09:53:35 +01:00
events.h	xen/console: harden hvc_xen against event channel storms	2021-12-16 08:24:08 +01:00
features.h
grant_table.h	xen/grants: support allocating consecutive grants	2022-06-06 08:54:35 +02:00
hvc-console.h
hvm.h	xen: Move xen_setup_callback_vector() definition to include/xen/hvm.h	2020-06-11 15:15:19 +02:00
mem-reservation.h	xen/balloon: add runtime control for scrubbing ballooned out pages	2018-09-14 08:51:10 -04:00
page.h	swiotlb-xen: remove XEN_PFN_PHYS	2020-08-04 07:50:43 +02:00
pci.h	xen-pciback: allow compiling on other archs than x86	2021-11-02 08:03:43 -05:00
platform_pci.h
swiotlb-xen.h	swiotlb-xen: fix DMA_ATTR_NO_KERNEL_MAPPING on arm	2022-05-11 19:48:32 +02:00
xen-front-pgdir-shbuf.h	xen: Introduce shared buffer helpers for page directory...	2018-12-18 12:15:55 -05:00
xen-ops.h	xen: don't require virtio with grants for non-PV guests	2022-08-01 07:43:03 +02:00
xen.h	xen: don't require virtio with grants for non-PV guests	2022-08-01 07:43:03 +02:00
xenbus_dev.h	xen: xenbus_dev.h: delete incorrect file name	2022-02-03 08:16:32 +01:00
xenbus.h	xen/xenbus: eliminate xenbus_grant_ring()	2022-05-19 14:22:11 +02:00