ACPI Timer does not work in a PVH guest, but local APIC works on both PVH and HVM.
Note that the use of SecPeiDxeTimerLibCpu might be an issue with a driver of type DXE_RUNTIME_DRIVER. I've attemptde to find out which of the DXE_RUNTIME_DRIVER uses the TimerLib at runtime. I've done that by replacing the TimerLib evaluation in [LibraryClasses.common.DXE_RUNTIME_DRIVER] by a different one and check every module that uses it (with the --report-file=report build option). ResetSystemRuntimeDxe is calling the TimerLib API at runtime to do the operation "EfiResetCold", so this may never complete if the OS have disabled the Local APIC Timer. Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1689 Signed-off-by: Anthony PERARD <anthony.per...@citrix.com> --- Notes: v3: - cleanup .dsc, leave only one TimerLib resolution - Added a note in the commit message regarding the use of the local apic by runtime drivers OvmfPkg/OvmfXen.dsc | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-) diff --git a/OvmfPkg/OvmfXen.dsc b/OvmfPkg/OvmfXen.dsc index 9f79d455fa..6288394eb8 100644 --- a/OvmfPkg/OvmfXen.dsc +++ b/OvmfPkg/OvmfXen.dsc @@ -104,7 +104,7 @@ [SkuIds] ################################################################################ [LibraryClasses] PcdLib|MdePkg/Library/BasePcdLibNull/BasePcdLibNull.inf - TimerLib|OvmfPkg/Library/AcpiTimerLib/BaseAcpiTimerLib.inf + TimerLib|MdePkg/Library/SecPeiDxeTimerLibCpu/SecPeiDxeTimerLibCpu.inf PrintLib|MdePkg/Library/BasePrintLib/BasePrintLib.inf BaseMemoryLib|MdePkg/Library/BaseMemoryLibRepStr/BaseMemoryLibRepStr.inf BaseLib|MdePkg/Library/BaseLib/BaseLib.inf @@ -202,7 +202,6 @@ [LibraryClasses.common] BaseCryptLib|CryptoPkg/Library/BaseCryptLib/BaseCryptLib.inf [LibraryClasses.common.SEC] - TimerLib|OvmfPkg/Library/AcpiTimerLib/BaseRomAcpiTimerLib.inf QemuFwCfgLib|OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgSecLib.inf !ifdef $(DEBUG_ON_SERIAL_PORT) DebugLib|MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf @@ -281,7 +280,6 @@ [LibraryClasses.common.DXE_CORE] [LibraryClasses.common.DXE_RUNTIME_DRIVER] PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf - TimerLib|OvmfPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.inf HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf @@ -298,7 +296,6 @@ [LibraryClasses.common.DXE_RUNTIME_DRIVER] [LibraryClasses.common.UEFI_DRIVER] PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf - TimerLib|OvmfPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.inf HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf DxeCoreEntryPoint|MdePkg/Library/DxeCoreEntryPoint/DxeCoreEntryPoint.inf MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf @@ -313,7 +310,6 @@ [LibraryClasses.common.UEFI_DRIVER] [LibraryClasses.common.DXE_DRIVER] PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf - TimerLib|OvmfPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.inf HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf @@ -337,7 +333,6 @@ [LibraryClasses.common.DXE_DRIVER] [LibraryClasses.common.UEFI_APPLICATION] PcdLib|MdePkg/Library/DxePcdLib/DxePcdLib.inf - TimerLib|OvmfPkg/Library/AcpiTimerLib/DxeAcpiTimerLib.inf HobLib|MdePkg/Library/DxeHobLib/DxeHobLib.inf MemoryAllocationLib|MdePkg/Library/UefiMemoryAllocationLib/UefiMemoryAllocationLib.inf ReportStatusCodeLib|MdeModulePkg/Library/DxeReportStatusCodeLib/DxeReportStatusCodeLib.inf -- Anthony PERARD -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#43287): https://edk2.groups.io/g/devel/message/43287 Mute This Topic: https://groups.io/mt/32308573/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
