Messages in this thread | | | Subject | Re: BUG() at boot in __phys_addr with DEBUG_VIRTUAL | From | Matt Fleming <> | Date | Thu, 13 Nov 2014 10:36:33 +0000 |
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On Wed, 2014-11-12 at 18:25 +0100, Borislav Petkov wrote: > > But before we do that: Matt, why do we need the kernel text mapped 1:1 > in the EFI page table at all? > > You've added this with > > 4f9dbcfc4029 ("x86/efi: Add mixed runtime services support")
So that when we switch into 32-bit mode we can still access the kernel text via the 1:1 mapping in protected mode.
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