tree d1aef99070e547931b89e328e09f3f8ab3041ec0
parent d0d1cd70d10639273e2a23870e7e7d80b2bc4e21
author XiongZhang <xiong.y.zhang@intel.com> 1487794799 -0700
committer Alex Williamson <alex.williamson@redhat.com> 1487794799 -0700

vfio/pci-quirks.c: Disable stolen memory for igd VFIO

Regardless of running in UPT or legacy mode, the guest igd
drivers may attempt to use stolen memory, however only legacy
mode has BIOS support for reserving stolen memmory in the
guest VM. We zero out the stolen memory size in all cases,
then guest igd driver won't use stolen memory.
In legacy mode, user could use x-igd-gms option to specify the
amount of stolen memory which will be pre-allocated and reserved
by bios for igd use.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99028
          https://bugs.freedesktop.org/show_bug.cgi?id=99025

Signed-off-by: Xiong Zhang <xiong.y.zhang@intel.com>
Tested-by: Terrence Xu <terrence.xu@intel.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>