On Tue, May 17, 2022 at 12:47:21PM +0000, Yao, Jiewen wrote: > Question: Does this patch need catch release 202205 release?
It does fix a regression since 202202, so I'd hope so :) -dann > > > > -----Original Message----- > > From: Xu, Min M <min.m...@intel.com> > > Sent: Tuesday, May 17, 2022 8:43 PM > > To: devel@edk2.groups.io > > Cc: Xu, Min M <min.m...@intel.com>; dann frazier > > <dann.fraz...@canonical.com>; Aktas, Erdem <erdemak...@google.com>; > > James Bottomley <j...@linux.ibm.com>; Yao, Jiewen <jiewen....@intel.com>; > > Tom Lendacky <thomas.lenda...@amd.com> > > Subject: [PATCH] OvmfPkg/OvmfPkgX64: Use different CcProbeLib when SMM is > > on or off > > > > CcProbeLib is designed to check the vm guest type. The OvmfPkg/CcProbeLib > > reads the OvmfWorkArea (0x80B000) to get the vm guest type which is > > written by each guest (SEV or TDX guest). But in SMM drivers the access > > to OvmfWorkArea is illegal. PiSmmCpuDxeSmm.inf is an example. It uses > > IoLib which in OvmfPkgX64 BaseIoLibIntrinsicSev.inf is included. The > > IoLib probes if the working guest is td guest by calling CcProbe(). > > > > So CcProbeLibNull will be included when SMM_REQUIRE is set. Currently > > only TDVF uses CcProbe to check the guest type, and TDVF doesn't > > support SMM, so this fix has no side-effect. > > > > Cc: dann frazier <dann.fraz...@canonical.com> > > Cc: Erdem Aktas <erdemak...@google.com> > > Cc: James Bottomley <j...@linux.ibm.com> > > Cc: Jiewen Yao <jiewen....@intel.com> > > Cc: Tom Lendacky <thomas.lenda...@amd.com> > > Signed-off-by: Min Xu <min.m...@intel.com> > > --- > > OvmfPkg/OvmfPkgX64.dsc | 4 +++- > > 1 file changed, 3 insertions(+), 1 deletion(-) > > > > diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc > > index 71526bba31..db7f4def7a 100644 > > --- a/OvmfPkg/OvmfPkgX64.dsc > > +++ b/OvmfPkg/OvmfPkgX64.dsc > > @@ -171,7 +171,6 @@ > > PciCapLib|OvmfPkg/Library/BasePciCapLib/BasePciCapLib.inf > > > > PciCapPciSegmentLib|OvmfPkg/Library/BasePciCapPciSegmentLib/BasePciCapP > > ciSegmentLib.inf > > PciCapPciIoLib|OvmfPkg/Library/UefiPciCapPciIoLib/UefiPciCapPciIoLib.inf > > - CcProbeLib|OvmfPkg/Library/CcProbeLib/CcProbeLib.inf > > IoLib|MdePkg/Library/BaseIoLibIntrinsic/BaseIoLibIntrinsicSev.inf > > > > OemHookStatusCodeLib|MdeModulePkg/Library/OemHookStatusCodeLibNull/ > > OemHookStatusCodeLibNull.inf > > SerialPortLib|PcAtChipsetPkg/Library/SerialIoLib/SerialIoLib.inf > > @@ -198,6 +197,9 @@ > > > > !if $(SMM_REQUIRE) == FALSE > > LockBoxLib|OvmfPkg/Library/LockBoxLib/LockBoxBaseLib.inf > > + CcProbeLib|OvmfPkg/Library/CcProbeLib/CcProbeLib.inf > > +!else > > + CcProbeLib|MdePkg/Library/CcProbeLibNull/CcProbeLibNull.inf > > !endif > > > > CustomizedDisplayLib|MdeModulePkg/Library/CustomizedDisplayLib/Customize > > dDisplayLib.inf > > > > FrameBufferBltLib|MdeModulePkg/Library/FrameBufferBltLib/FrameBufferBltLi > > b.inf > -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#89830): https://edk2.groups.io/g/devel/message/89830 Mute This Topic: https://groups.io/mt/91162384/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
