Set PcdSpeculationBarrierType to use CPUID instead of the default LFENCE in the BaseLib function SpeculationBarrier(). LFENCE requires SSE2, and Quark platforms do not support SSE2.
Cc: Kelly Steele <kelly.ste...@intel.com> Cc: Liming Gao <liming....@intel.com> Signed-off-by: Michael D Kinney <michael.d.kin...@intel.com> --- QuarkPlatformPkg/Quark.dsc | 7 ++++++- QuarkPlatformPkg/QuarkMin.dsc | 5 +++++ 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/QuarkPlatformPkg/Quark.dsc b/QuarkPlatformPkg/Quark.dsc index 422fd9cf8d..96ddc1565a 100644 --- a/QuarkPlatformPkg/Quark.dsc +++ b/QuarkPlatformPkg/Quark.dsc @@ -2,7 +2,7 @@ # Clanton Peak CRB platform with 32-bit DXE for 4MB/8MB flash devices. # # This package provides Clanton Peak CRB platform specific modules. -# Copyright (c) 2013 - 2018 Intel Corporation. +# Copyright (c) 2013 - 2019 Intel Corporation. # # SPDX-License-Identifier: BSD-2-Clause-Patent # @@ -448,6 +448,11 @@ [PcdsFixedAtBuild] gEfiMdeModulePkgTokenSpaceGuid.PcdRecoveryFileName|L"QUARKREC.Cap" !endif + # + # Quark does not support LFENCE. Use CPUID as speculation barrier + # + gEfiMdePkgTokenSpaceGuid.PcdSpeculationBarrierType|0x02 + [PcdsPatchableInModule] gEfiMdePkgTokenSpaceGuid.PcdDebugPrintErrorLevel|0x803000C7 gEfiMdeModulePkgTokenSpaceGuid.PcdVpdBaseAddress|0x0 diff --git a/QuarkPlatformPkg/QuarkMin.dsc b/QuarkPlatformPkg/QuarkMin.dsc index 00e2febb54..8ca75bc474 100644 --- a/QuarkPlatformPkg/QuarkMin.dsc +++ b/QuarkPlatformPkg/QuarkMin.dsc @@ -406,6 +406,11 @@ [PcdsFixedAtBuild] gEfiMdeModulePkgTokenSpaceGuid.PcdConInConnectOnDemand|FALSE + # + # Quark does not support LFENCE. Use CPUID as speculation barrier + # + gEfiMdePkgTokenSpaceGuid.PcdSpeculationBarrierType|0x02 + [PcdsPatchableInModule] gEfiMdePkgTokenSpaceGuid.PcdDebugPrintErrorLevel|0x803000C7 gEfiMdeModulePkgTokenSpaceGuid.PcdVpdBaseAddress|0x0 -- 2.21.0.windows.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#39868): https://edk2.groups.io/g/devel/message/39868 Mute This Topic: https://groups.io/mt/31424370/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
