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| author | Laszlo Ersek <lersek@redhat.com> | 2016-03-11 00:07:16 +0100 |
|---|---|---|
| committer | Laszlo Ersek <lersek@redhat.com> | 2016-04-06 19:41:08 +0200 |
| commit | eccc28bfcb91b5d72adf173d7404652c7aa63c26 (patch) | |
| tree | d4a04842da5d28ab7dfbc930ef34ec5b42a1efd8 | |
| parent | 29d0259e06ee0d0772d1068e02fb2242542fad2a (diff) | |
| download | edk2-eccc28bfcb91b5d72adf173d7404652c7aa63c26.tar.gz edk2-eccc28bfcb91b5d72adf173d7404652c7aa63c26.tar.bz2 edk2-eccc28bfcb91b5d72adf173d7404652c7aa63c26.zip | |
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>
| -rw-r--r-- | OvmfPkg/OvmfPkgIa32.dsc | 1 | ||||
| -rw-r--r-- | OvmfPkg/OvmfPkgIa32X64.dsc | 1 | ||||
| -rw-r--r-- | OvmfPkg/OvmfPkgX64.dsc | 1 |
3 files changed, 3 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
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc index e8b3ee3a11..8489b77e88 100644 --- a/OvmfPkg/OvmfPkgIa32X64.dsc +++ b/OvmfPkg/OvmfPkgIa32X64.dsc @@ -363,6 +363,7 @@ #
################################################################################
[PcdsFeatureFlag]
+ gEfiMdeModulePkgTokenSpaceGuid.PcdHiiOsRuntimeSupport|FALSE
gEfiMdeModulePkgTokenSpaceGuid.PcdStatusCodeUseSerial|FALSE
gEfiMdeModulePkgTokenSpaceGuid.PcdStatusCodeUseMemory|TRUE
gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSupportUefiDecompress|FALSE
diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc index 18a467795e..24fa073542 100644 --- a/OvmfPkg/OvmfPkgX64.dsc +++ b/OvmfPkg/OvmfPkgX64.dsc @@ -363,6 +363,7 @@ #
################################################################################
[PcdsFeatureFlag]
+ gEfiMdeModulePkgTokenSpaceGuid.PcdHiiOsRuntimeSupport|FALSE
gEfiMdeModulePkgTokenSpaceGuid.PcdStatusCodeUseSerial|FALSE
gEfiMdeModulePkgTokenSpaceGuid.PcdStatusCodeUseMemory|TRUE
gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSupportUefiDecompress|FALSE
|