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Juergen Gross fa1f57421e xen/virtio: Enable restricted memory access using Xen grant mappings 
In order to support virtio in Xen guests add a config option XEN_VIRTIO
enabling the user to specify whether in all Xen guests virtio should
be able to access memory via Xen grant mappings only on the host side.

Also set PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS feature from the guest
initialization code on Arm and x86 if CONFIG_XEN_VIRTIO is enabled.

Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Link: https://lore.kernel.org/r/1654197833-25362-5-git-send-email-olekstysh@gmail.com
Signed-off-by: Juergen Gross <jgross@suse.com>
 		2022-06-06 16:07:30 +02:00
..
Kconfig perf: Force architectures to opt-in to guest callbacks 2021-11-17 14:49:08 +01:00
Makefile x86: remove the IOMMU table infrastructure 2022-04-18 07:21:10 +02:00
apic.c arch:x86:xen: Remove unnecessary assignment in xen_apic_read() 2022-03-15 20:35:35 -05:00
debugfs.c x86: xen: no need to check return value of debugfs_create functions 2019-06-03 15:49:07 +02:00
debugfs.h
…
efi.c efi: x86/xen: switch to efi_get_secureboot_mode helper 2020-11-17 15:09:32 +01:00
enlighten.c x86/xen: switch initial pvops IRQ functions to dummy ones 2021-11-02 08:03:43 -05:00
enlighten_hvm.c xen/virtio: Enable restricted memory access using Xen grant mappings 2022-06-06 16:07:30 +02:00
enlighten_pv.c xen/virtio: Enable restricted memory access using Xen grant mappings 2022-06-06 16:07:30 +02:00
enlighten_pvh.c xen/x86: adjust data placement 2021-10-05 08:36:19 +02:00
grant-table.c x86/xen: open code alloc_vm_area in arch_gnttab_valloc 2020-10-18 09:27:10 -07:00
irq.c x86/xen: switch initial pvops IRQ functions to dummy ones 2021-11-02 08:03:43 -05:00
mmu.c x86/xen: Add SPDX identifier in arch/x86/xen files 2018-09-03 16:50:33 +02:00
mmu.h mm: update ptep_modify_prot_start/commit to take vm_area_struct as arg 2019-03-05 21:07:18 -08:00
mmu_hvm.c proc/vmcore: convert oldmem_pfn_is_ram callback to more generic vmcore callbacks 2021-11-09 10:02:48 -08:00
mmu_pv.c swiotlb-xen: fix DMA_ATTR_NO_KERNEL_MAPPING on arm 2022-05-11 19:48:32 +02:00
multicalls.c treewide: Switch printk users from %pf and %pF to %ps and %pS, respectively 2019-04-09 14:19:06 +02:00
multicalls.h
…
p2m.c memblock: use memblock_free for freeing virtual pointers 2021-11-06 13:30:41 -07:00
platform-pci-unplug.c x86: xen: platform-pci-unplug: use pr_err() and pr_warn() instead of raw printk() 2021-08-30 12:09:54 +02:00
pmu.c xen: fix is_xen_pmu() 2022-03-25 14:22:53 -05:00
pmu.h xen: fix is_xen_pmu() 2022-03-25 14:22:53 -05:00
setup.c x86/xen: Fix kerneldoc warning 2022-03-10 09:27:55 -06:00
smp.c x86/xen: remove xen_have_vcpu_info_placement flag 2021-11-02 07:45:44 -05:00
smp.h
…
smp_hvm.c xen: delay xen_hvm_init_time_ops() if kdump is boot on vcpu>=32 2022-03-10 09:27:55 -06:00
smp_pv.c x86/xen: Allow to retry if cpu_initialize_context() failed. 2022-04-12 14:13:01 +02:00
spinlock.c x86/xen: don't unbind uninitialized lock_kicker_irq 2020-11-09 07:43:45 -06:00
suspend.c x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend 2018-02-28 16:03:19 +01:00
suspend_hvm.c xen: Move xen_setup_callback_vector() definition to include/xen/hvm.h 2020-06-11 15:15:19 +02:00
suspend_pv.c locking/seqlock, headers: Untangle the spaghetti monster 2020-08-06 16:13:13 +02:00
time.c xen: delay xen_hvm_init_time_ops() if kdump is boot on vcpu>=32 2022-03-10 09:27:55 -06:00
trace.c
…
vga.c xen/x86: obtain full video frame buffer address for Dom0 also under EFI 2022-02-10 11:07:23 +01:00
xen-asm.S x86/ibt,xen: Sprinkle the ENDBR 2022-03-15 10:32:35 +01:00
xen-head.S x86/xen: Add ANNOTATE_NOENDBR to startup_xen() 2022-04-19 21:58:49 +02:00
xen-ops.h x86/xen: remove xen_have_vcpu_info_placement flag 2021-11-02 07:45:44 -05:00