Messages in this thread | | | Date | Tue, 19 Jul 2022 19:37:43 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH] efi/x86: use naked RET on mixed mode call wrapper |
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On Tue, Jul 19, 2022 at 05:22:28PM +0200, Ard Biesheuvel wrote: > The code in question is a little trampoline that executes from the EFI > mixed mode 1:1 mapping of the kernel text, and never via the kernel > mapping, so we should just move it into .rodata instead (and fix up > the mixed mode virtual address map logic accordingly). I don't think > mapping the kernel text and rodata into the 1;1 EFI map is needed at > all, tbh, and the only thing we ever access via that mapping is that > little trampoline. > > Something like
I'm obviously always for simplifications like that. I'm guessing this should be tested for a full next release before it goes to Linus?
Thx.
-- Regards/Gruss, Boris.
https://people.kernel.org/tglx/notes-about-netiquette
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