On Tue, Nov 22, 2022 at 02:12:09PM +0300, Evgeniy Baskov wrote:
> This patchset is aimed
> * to improve UEFI compatibility of compressed kernel code for x86_64
> * to setup proper memory access attributes for code and rodata sections
> * to implement W^X protection policy throughout the whole execution
> of compressed kernel for EFISTUB code path.
Hi Evgeniy,
I've tested this patch set on hardware and QEMU+MU firmware, and it
works for me with a couple of minor issues:
- on one machine that has the DXE protocol but not the EFI one, we get
an error because the firmware doesn't support EFI_MEMORY_RP
- on QEMU I'm seeing the size of "(unsigned long)_head - image_base"
wind up as 0, which leads to an EFI_INVALID_PARAMETER on the
clear_memory_attributes() call.
In both cases the system winds up working, but with unnecessary console
output. I'll send you patches as a follow-up to this mail. In the mean
time:
Tested-by: Peter Jones <pjones@xxxxxxxxxx>
--
Peter
