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author | Michael Kubacki <michael.a.kubacki@intel.com> | 2019-10-14 10:14:24 -0700 |
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committer | Michael Kubacki <michael.a.kubacki@intel.com> | 2019-11-05 21:55:54 -0800 |
commit | d511d6e0e7a9ffa960afb275c28093bfe41e42ad (patch) | |
tree | 357a5bf5e244aa23c81d4ff740218af34a75e790 | |
parent | 6f9838f32ff4c3b747c0c47540c34b4ec089642b (diff) | |
download | edk2-d511d6e0e7a9ffa960afb275c28093bfe41e42ad.zip edk2-d511d6e0e7a9ffa960afb275c28093bfe41e42ad.tar.gz edk2-d511d6e0e7a9ffa960afb275c28093bfe41e42ad.tar.bz2 |
OvmfPkg: Disable variable runtime cache
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>
Reviewed-by: Laszlo Ersek <lersek@redhat.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 05bb6ae..d350b75 100644 --- a/OvmfPkg/OvmfPkgIa32.dsc +++ b/OvmfPkg/OvmfPkgIa32.dsc @@ -431,6 +431,7 @@ !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 4a75a03..1ef82ca 100644 --- a/OvmfPkg/OvmfPkgIa32X64.dsc +++ b/OvmfPkg/OvmfPkgIa32X64.dsc @@ -436,6 +436,7 @@ !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 ed54181..232815c 100644 --- a/OvmfPkg/OvmfPkgX64.dsc +++ b/OvmfPkg/OvmfPkgX64.dsc @@ -436,6 +436,7 @@ !if $(SMM_REQUIRE) == TRUE
gUefiOvmfPkgTokenSpaceGuid.PcdSmmSmramRequire|TRUE
gUefiCpuPkgTokenSpaceGuid.PcdCpuSmmEnableBspElection|FALSE
+ gEfiMdeModulePkgTokenSpaceGuid.PcdEnableVariableRuntimeCache|FALSE
!endif
[PcdsFixedAtBuild]
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