Hello all, After Drew pointed out that mach-virt now populates the memory region beyond DRAM, I am proposing this approach instead. Since KVM limits its IPA space to 40 bits, there is simply no point in supporting anything beyond that for ArmVirtQemu.
I am cc'ing the Xen guys since they may run into similar issues on ThunderX, or any other hardware whose support PA space is so large. Their platform does not use ArmVirtPkg/ArmVirtPlatformLib though, so a similar change may be necssary on the Xen end. Changes since v1: - inverted order of the patches - added Laszlo's R-b to patch #1 (formerly patch #2) - use an explicit 64-bit type the left shift left hand operand, since the right hand operand may (and will) exceed 32 even on 32-bit platforms (patch #2, formerly patch #1) - add missing space between MIN and ( Ard Biesheuvel (2): ArmVirtPkg/ArmVirtQemu: limit the (I)PA space to 40 bits ArmVirtPkg/ArmVirtPlatformLib: reduce ID map size to GCD region size ArmVirtPkg/ArmVirtQemu.dsc | 4 ++++ ArmVirtPkg/Library/ArmVirtPlatformLib/ArmVirtPlatformLib.inf | 1 + ArmVirtPkg/Library/ArmVirtPlatformLib/VirtMem.c | 4 +++- 3 files changed, 8 insertions(+), 1 deletion(-) -- 1.9.1 _______________________________________________ edk2-devel mailing list edk2-devel@lists.01.org https://lists.01.org/mailman/listinfo/edk2-devel
