efi/x86: Drop the special GDT for the EFI thunk

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Instead of using efi_gdt64 to switch back to 64-bit mode and then
switching to the real boot-time GDT, just switch to the boot-time GDT
directly. The two GDT's are identical other than efi_gdt64 not including
the 32-bit code segment.

Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Link: https://lore.kernel.org/r/20200523221513.1642948-1-nivedita@alum.mit.edu
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>

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Arvind Sankar 2020-05-23 18:15:13 -04:00 • committed by Ard Biesheuvel

parent 6e99d3213b

commit 9241dfe7f2

1 changed files with 3 additions and 16 deletions

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arch/x86/boot/compressed/efi_thunk_64.S

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