Messages in this thread | | | Date | Tue, 13 Dec 2022 13:03:17 -0500 | From | Peter Jones <> | Subject | Re: [PATCH v3 00/24] x86_64: Improvements at compressed kernel stage |
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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@redhat.com>
-- Peter
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