Hi,
This patch series add support for grant mappings as a pseudo RAM region for Xen.
Enabling grant mappings patches(first 6) are written by Juergen in 2021.
QEMU Virtio device provides an emulated backends for Virtio frontned devices
in Xen.
Please set "iommu_platform=on" option when invoking QEMU. As this will set
VIRTIO_F_ACCESS_PLATFORM feature which will be used by virtio frontend in Xen
to know whether backend supports grants or not.
Changelog:
v2->v3:
Drop patch 1/7. This was done because device unplug is an x86-only case.
Add missing qemu_mutex_unlock() before return.
v1->v2:
Split patch 2/7 to keep phymem.c changes in a separate.
In patch "xen: add map and unmap callbacks for grant" add check for total
allowed grant < XEN_MAX_VIRTIO_GRANTS.
Fix formatting issues and re-based with master latest.
Regards,
Vikram
Juergen Gross (5):
xen: add pseudo RAM region for grant mappings
softmmu: let qemu_map_ram_ptr() use qemu_ram_ptr_length()
xen: let xen_ram_addr_from_mapcache() return -1 in case of not found
entry
memory: add MemoryRegion map and unmap callbacks
xen: add map and unmap callbacks for grant region
Vikram Garhwal (2):
softmmu: physmem: Split ram_block_add()
hw: arm: Add grant mapping.
hw/arm/xen_arm.c | 3 +
hw/i386/xen/xen-hvm.c | 3 +
hw/xen/xen-hvm-common.c | 4 +-
hw/xen/xen-mapcache.c | 214 ++++++++++++++++++++++++++++++--
include/exec/memory.h | 21 ++++
include/exec/ram_addr.h | 1 +
include/hw/xen/xen-hvm-common.h | 2 +
include/hw/xen/xen_pvdev.h | 3 +
include/sysemu/xen-mapcache.h | 3 +
system/physmem.c | 179 +++++++++++++++-----------
10 files changed, 351 insertions(+), 82 deletions(-)
--
2.17.1
