On Fri, Sep 27, 2024 at 04:14:55PM +0300, Ilias Apalodimas wrote: [snip] > > Well, I suppose so. But if it doesn't > > matter, why is Sughosh spending all this time solving the problem? > > First of all, we got multiple asks from Tom saying LMB wasn't doing > all that it should for a long time and needed fixing regardless. > LMB prior to the patches was calling efi_get_memory_map_alloc() on the > reserve function and be aware of EFI mappings, but that wasn't the > best solution. With the lmb created on the fly we also had to call > that function every time before LMB could decide what memory is free.
On this point, to be clear, I asked Heinrich to tie EFI and LMB together because I had missed that it wasn't doing anything before and wanted to avoid a round of CVE assignments over "you can use EFI to overwrite U-Boot" similar to the CVEs that caused us to start abusing the old LMB mechanism too. Nobody liked that original change and it was intended to be reworked. -- Tom
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