Hi Laszlo This is for UEFI2.5 Properties Table feature. See UEFI 2.5 spec, 4.6 EFI Configuration Table & Properties Table, page 105.
// // Memory attribute (Not defined bits are reserved) // #define EFI_PROPERTIES_RUNTIME_MEMORY_PROTECTION_NON_EXECUTABLE_PE_DATA 0x1 // BIT 0 - description - implies the runtime data is separated from the code This bit implies that the UEFI runtime code and data sections of the executable image are separate and aligned to at least a 4KiB boundary. This bit also implies that the data pages do no have any executable code. A platform may use gEfiMdeModulePkgTokenSpaceGuid.PropertiesTableEnable to control enable or disable this feature. In order to meet "secure by default" rule, we define it TRUE as default configuration in MdeModulePkg. If a platform does not want to enable this feature, it can override this PCD to be FALSE. If a platform wants to enable this feature, it can override link option to make code/data 4K aligned for any runtime driver. Thank you Yao Jiewen -----Original Message----- From: Laszlo Ersek [mailto:ler...@redhat.com] Sent: Monday, June 08, 2015 6:34 PM To: Yao, Jiewen Cc: edk2-devel@lists.sourceforge.net Subject: Re: [edk2] [patch] MdePkg/PropertiesTable support, MdeModulePkg/DxeCore support UEFI2.5 properties table On 06/04/15 16:34, Yao, Jiewen wrote: > + SetPropertiesTableSectionAlignment (SectionAlignment); if > + ((SectionAlignment & (SIZE_4KB - 1)) != 0) { > + DEBUG ((EFI_D_ERROR, "!!!!!!!! InsertImageRecord - Section > + Alignment(0x%x) is not 4K !!!!!!!!\n", SectionAlignment)); I just noticed that the above message is printed under OVMF for all DXE_RUNTIME_DRIVER modules. Why does that happen? Thanks Laszlo > + PdbPointer = PeCoffLoaderGetPdbPointer ((VOID*) (UINTN) ImageAddress); > + if (PdbPointer != NULL) { > + DEBUG ((EFI_D_ERROR, "!!!!!!!! Image - %a !!!!!!!!\n", PdbPointer)); > + } > + goto Finish; > + } ------------------------------------------------------------------------------ _______________________________________________ edk2-devel mailing list edk2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/edk2-devel
