From: "Kubacki, Michael A" <michael.a.kubacki@intel.com>
To: devel@edk2.groups.io
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Laszlo Ersek <lersek@redhat.com>,
Liming Gao <liming.gao@intel.com>,
Jordan Justen <jordan.l.justen@intel.com>,
Hao A Wu <hao.a.wu@intel.com>
Subject: [PATCH V5 09/10] OvmfPkg: Disable variable runtime cache
Date: Thu, 17 Oct 2019 17:14:09 -0700 [thread overview]
Message-ID: <20191018001410.27328-10-michael.a.kubacki@intel.com> (raw)
In-Reply-To: <20191018001410.27328-1-michael.a.kubacki@intel.com>
Sets gEfiMdeModulePkgTokenSpaceGuid.PcdEnableVariableRuntimeCache
to FALSE in OvmfPkgIa32.dsc, OvmfPkgIa32X64.dsc, and OvmfPkgX64.dsc
so that when SMM_REQUIRE is TRUE, the SMM variable driver will not
use the runtime variable cache.
This is done for OvmfPkg because it currently depends upon a SMM
variable GetVariable ()implementation as a simple method to exercise
the SMM driver stack. This allows the following commands to be used
for variables such as Boot####, BootOrder, and BootNext to test SMM
timing and stability differences on the BSP (e.g. CPU#0) vs an
AP (e.g. CPU#1).
# taskset -c 0 efibootmgr
# taskset -c 1 efibootmgr
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Signed-off-by: Michael Kubacki <michael.a.kubacki@intel.com>
---
OvmfPkg/OvmfPkgIa32.dsc | 1 +
OvmfPkg/OvmfPkgIa32X64.dsc | 1 +
OvmfPkg/OvmfPkgX64.dsc | 1 +
3 files changed, 3 insertions(+)
diff --git a/OvmfPkg/OvmfPkgIa32.dsc b/OvmfPkg/OvmfPkgIa32.dsc
index 66e944436a..4861e2342b 100644
--- a/OvmfPkg/OvmfPkgIa32.dsc
+++ b/OvmfPkg/OvmfPkgIa32.dsc
@@ -428,6 +428,7 @@
!if $(SMM_REQUIRE) == TRUE
gUefiOvmfPkgTokenSpaceGuid.PcdSmmSmramRequire|TRUE
gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmEnableBspElection|FALSE
+ gEfiMdeModulePkgTokenSpaceGuid.PcdEnableVariableRuntimeCache|FALSE
!endif
[PcdsFixedAtBuild]
diff --git a/OvmfPkg/OvmfPkgIa32X64.dsc b/OvmfPkg/OvmfPkgIa32X64.dsc
index 51c2bfb44f..f316d97d6a 100644
--- a/OvmfPkg/OvmfPkgIa32X64.dsc
+++ b/OvmfPkg/OvmfPkgIa32X64.dsc
@@ -433,6 +433,7 @@
!if $(SMM_REQUIRE) == TRUE
gUefiOvmfPkgTokenSpaceGuid.PcdSmmSmramRequire|TRUE
gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmEnableBspElection|FALSE
+ gEfiMdeModulePkgTokenSpaceGuid.PcdEnableVariableRuntimeCache|FALSE
!endif
[PcdsFixedAtBuild]
diff --git a/OvmfPkg/OvmfPkgX64.dsc b/OvmfPkg/OvmfPkgX64.dsc
index ba7a758844..546649f0a2 100644
--- a/OvmfPkg/OvmfPkgX64.dsc
+++ b/OvmfPkg/OvmfPkgX64.dsc
@@ -433,6 +433,7 @@
!if $(SMM_REQUIRE) == TRUE
gUefiOvmfPkgTokenSpaceGuid.PcdSmmSmramRequire|TRUE
gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmEnableBspElection|FALSE
+ gEfiMdeModulePkgTokenSpaceGuid.PcdEnableVariableRuntimeCache|FALSE
!endif
[PcdsFixedAtBuild]
--
2.16.2.windows.1
next prev parent reply other threads:[~2019-10-18 0:15 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-18 0:14 [PATCH V5 00/10] UEFI Variable SMI Reduction Kubacki, Michael A
2019-10-18 0:14 ` [PATCH V5 01/10] MdeModulePkg/Variable: Consolidate common parsing functions Kubacki, Michael A
2019-10-18 0:14 ` [PATCH V5 02/10] MdeModulePkg/Variable: Parameterize GetNextVariableInternal () stores Kubacki, Michael A
2019-10-18 0:14 ` [PATCH V5 03/10] MdeModulePkg/Variable: Parameterize VARIABLE_INFO_ENTRY buffer Kubacki, Michael A
2019-10-18 0:14 ` [PATCH V5 04/10] MdeModulePkg/Variable: Parameterize auth status in VariableParsing Kubacki, Michael A
2019-10-18 0:14 ` [PATCH V5 05/10] MdeModulePkg/Variable: Add a file for NV variable functions Kubacki, Michael A
2019-10-18 0:14 ` [PATCH V5 06/10] MdeModulePkg VariableInfo: Always consider RT DXE and SMM stats Kubacki, Michael A
2019-10-18 0:14 ` [PATCH V5 07/10] MdeModulePkg/Variable: Add RT GetVariable() cache support Kubacki, Michael A
2019-10-18 0:14 ` [PATCH V5 08/10] MdeModulePkg/Variable: Add RT GetNextVariableName() " Kubacki, Michael A
2019-10-18 0:14 ` Kubacki, Michael A [this message]
2019-10-18 0:14 ` [PATCH V5 10/10] MdeModulePkg: Enable variable runtime cache by default Kubacki, Michael A
2019-10-18 2:31 ` [edk2-devel] [PATCH V5 00/10] UEFI Variable SMI Reduction Wang, Jian J
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