xemu/hw/i386/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
..
Makefile.objs move xen-mapcache.c to hw/i386/xen/ 2017-04-25 11:04:34 -07:00
trace-events trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
xen_apic.c apic: add send_msi() to APICCommonClass 2016-10-17 15:44:49 -02:00
xen_platform.c Merge remote-tracking branch 'origin/master' into HEAD 2018-01-11 22:03:50 +02:00
xen_pvdevice.c pci: Add INTERFACE_CONVENTIONAL_PCI_DEVICE to Conventional PCI devices 2017-10-15 05:54:43 +03:00
xen-hvm.c xen: Use newly added dmops for mapping VGA memory 2018-04-26 16:29:51 +01:00
xen-mapcache.c mmap(2) returns MAP_FAILED, not NULL, on failure 2017-12-18 17:07:02 +03:00