On 10/15/19 01:30, Michael Kubacki wrote: > 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.biesheu...@linaro.org> > Cc: Laszlo Ersek <ler...@redhat.com> > Cc: Liming Gao <liming....@intel.com> > Cc: Jordan Justen <jordan.l.jus...@intel.com> > Cc: Hao A Wu <hao.a...@intel.com> > Signed-off-by: Michael Kubacki <michael.a.kuba...@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] >
Reviewed-by: Laszlo Ersek <ler...@redhat.com> -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#48979): https://edk2.groups.io/g/devel/message/48979 Mute This Topic: https://groups.io/mt/34540096/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
