Comment 1 for bug 2037137
Revision history for this message
| Heinrich Schuchardt (xypron) wrote Re: shim crashes on arm64 w/ firmware that supports EFI Memory Attribute Protocol | #1 |
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79ea94a
(Get the code!)
Hello Dann,
The UEFI specification requires that if a 64 KiB page contains either of
– EfiRuntimeServi
– EfiRuntimeServi
– EfiReserved
– EfiACPIMemoryNVS
then all 4KiB pages in the 64KiB page must use identical attributes.
So additionally to the cited patch you must ensure that buffer allocated with AllocatePages() in handle_image() for which you set memory attributes does not contain any of the above memory types. The easiest way to fulfill the requirement is appropriate alignment and rounding of the used memory. I can't find this in upstream shim.
Best regards
Heinrich