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authorLaszlo Ersek <lersek@redhat.com>2016-03-11 00:07:16 +0100
committerLaszlo Ersek <lersek@redhat.com>2016-04-06 19:41:08 +0200
commiteccc28bfcb91b5d72adf173d7404652c7aa63c26 (patch)
treed4a04842da5d28ab7dfbc930ef34ec5b42a1efd8 /OvmfPkg/OvmfPkgIa32.dsc
parent29d0259e06ee0d0772d1068e02fb2242542fad2a (diff)
downloadedk2-platforms-eccc28bfcb91b5d72adf173d7404652c7aa63c26.tar.xz
OvmfPkg: disable PcdHiiOsRuntimeSupport
Edk2 commit 8a45f80edad4 ("MdeModulePkg: Make HII configuration settings available to OS runtime") implements the optional UEFI feature described in "31.2.11.1 OS Runtime Utilization" in UEFI v2.6. While this feature might show benefits down the road even in QEMU virtual machines, at the moment it only presents drawbacks: - it increases the EfiRuntimeServicesData footprint, - it triggers HII compatibility problems between edk2 and external drivers unconditionally, even if the end-user is not interested in HII and/or in configuring said drivers (see <https://www.redhat.com/archives/vfio-users/2016-March/msg00153.html> and <http://thread.gmane.org/gmane.comp.bios.edk2.devel/9894> for an example). While the feature was being introduced, popular demand for a controlling Feature PCD rose (see <http://thread.gmane.org/gmane.comp.bios.edk2.devel/7626>), which is why we can set it now to FALSE. Cc: Jordan Justen <jordan.l.justen@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Diffstat (limited to 'OvmfPkg/OvmfPkgIa32.dsc')
-rw-r--r--OvmfPkg/OvmfPkgIa32.dsc1
1 files changed, 1 insertions, 0 deletions
diff --git a/OvmfPkg/OvmfPkgIa32.dsc b/OvmfPkg/OvmfPkgIa32.dsc
index 19146f2bbb..d296d932f9 100644
--- a/OvmfPkg/OvmfPkgIa32.dsc
+++ b/OvmfPkg/OvmfPkgIa32.dsc
@@ -358,6 +358,7 @@
#
################################################################################
[PcdsFeatureFlag]
+ gEfiMdeModulePkgTokenSpaceGuid.PcdHiiOsRuntimeSupport|FALSE
gEfiMdeModulePkgTokenSpaceGuid.PcdStatusCodeUseSerial|FALSE
gEfiMdeModulePkgTokenSpaceGuid.PcdStatusCodeUseMemory|TRUE
gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSupportUefiDecompress|FALSE