x86/boot/64: Use RIP_REL_REF() to assign 'phys_base'

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'phys_base' is assigned from code that executes from a 1:1 mapping so it
cannot use a plain access from C. Replace the use of fixup_pointer()
with RIP_REL_REF(), which is better and simpler.

While at it, move the assignment to before the addition of the SME mask
so there is no need to subtract it again, and drop the unnecessary
addition ('phys_base' is statically initialized to 0x0)

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20240221113506.2565718-20-ardb+git@google.com

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Ard Biesheuvel 2024-02-21 12:35:09 +01:00 • committed by Ingo Molnar

parent 5da7936719

commit d9ec115805

1 changed files with 1 additions and 6 deletions

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arch/x86/kernel/head64.c

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