On Thu, 29 Jun 2023 at 10:09, duntan <dun....@intel.com> wrote: > > In the V8 patch set: > In 'OvmfPkg:Remove code that apply AddressEncMask to non-leaf entry', I > refined the commit message and added comments in the code around the areas > being changed to explain this code change. > > Only resend the changed patch in OvmfPkg. The patch set has been reviewed-by > > Dun Tan (14): > OvmfPkg:Remove code that apply AddressEncMask to non-leaf entry > MdeModulePkg: Remove other attribute protection in UnsetGuardPage
> UefiCpuPkg: Use CpuPageTableLib to convert SMM paging attribute. This patch breaks SMM on IA32. !!!! IA32 Exception Type - 0E(#PF - Page-Fault) CPU Apic ID - 00000000 !!!! ExceptionData - 00000008 I:0 R:1 U:0 W:0 P:0 PK:0 SS:0 SGX:0 EIP - 07FF97A6, CS - 00000008, EFLAGS - 00000046 EAX - 07FF2400, ECX - 07FC5140, EDX - 06AD7120, EBX - FFFFFFFF ESP - 07FCCDB4, EBP - 07FCCF4C, ESI - 00000000, EDI - 00000000 DS - 00000020, ES - 00000020, FS - 00000020, GS - 00000020, SS - 00000020 CR0 - 8001003B, CR2 - 06AD713C, CR3 - 07FA5000, CR4 - 00000668 DR0 - 00000000, DR1 - 00000000, DR2 - 00000000, DR3 - 00000000 DR6 - FFFF0FF0, DR7 - 00000400 GDTR - 07FC3000 0000004F, IDTR - 07FC6000 000000FF LDTR - 00000000, TR - 00000040 FXSAVE_STATE - 07FC7D60 qemu: terminating on signal 2 This appears to be a result from the following code in UefiCpuPkg/PiSmmCpuDxeSmm/Ia32/PageTbl.c:SmmInitPageTable() @@ -31,7 +31,7 @@ SmmInitPageTable ( InitializeSpinLock (mPFLock); mPhysicalAddressBits = 32; mPagingMode = PagingPae; which seems to be the wrong paging mode. However, 'Paging32bit' is not actually supported by the library so changing it results in an ASSERT(): Patch page table start ... ASSERT_RETURN_ERROR (Status = Unsupported) ASSERT [PiSmmCpuDxeSmm] /home/ardb/build/edk2/UefiCpuPkg/PiSmmCpuDxeSmm/SmmCpuMemoryManagement.c(537): !(((INTN)(RETURN_STATUS)(Status)) < 0) -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#108937): https://edk2.groups.io/g/devel/message/108937 Mute This Topic: https://groups.io/mt/99847923/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
