qemu-patch-raspberry4/include/hw/xen
Ross Lagerwall 2cbf890353 xen: Use newly added dmops for mapping VGA memory
Xen unstable (to be in 4.11) has two new dmops, relocate_memory and
pin_memory_cacheattr. Use these to set up the VGA memory, replacing the
previous calls to libxc. This allows the VGA console to work properly
when QEMU is running restricted (-xen-domid-restrict).

Wrapper functions are provided to allow QEMU to work with older versions
of Xen.

Tweak the error handling while making this change:
* Report pin_memory_cacheattr errors.
* Report errors even when DEBUG_HVM is not set. This is useful for
trying to understand why VGA is not working, since otherwise it just
fails silently.
* Fix the return values when an error occurs. The functions now
consistently return -1 and set errno.

CC: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Reviewed-by: Ian Jackson <ian.jackson@eu.citrix.com>
Signed-off-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
2018-04-26 16:29:51 +01:00
..
io xen: import ring.h from xen 2017-04-21 12:41:29 -07:00
xen.h xen: use libxendevice model to restrict operations 2017-04-21 12:40:14 -07:00
xen_backend.h xen: add a global indicator for grant copy being available 2017-10-26 14:23:06 -07:00
xen_common.h xen: Use newly added dmops for mapping VGA memory 2018-04-26 16:29:51 +01:00
xen_pvdev.h xen: create qdev for each backend device 2016-11-22 10:29:39 -08:00