x86/boot/compressed: Move startup32_load_idt() into .text section

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commit c6355995ba upstream.

Convert startup32_load_idt() into an ordinary function and move it into
the .text section. This involves turning the rva() immediates into ones
derived from a local label, and preserving/restoring the %ebp and %ebx
as per the calling convention.

Also move the #ifdef to the only existing call site. This makes it clear
that the function call does nothing if support for memory encryption is
not compiled in.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20221122161017.2426828-12-ardb@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Ard Biesheuvel 2022-11-22 17:10:11 +01:00 • committed by Greg Kroah-Hartman

parent 29134968f7

commit 2e47116315

1 changed files with 20 additions and 11 deletions

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arch/x86/boot/compressed/head_64.S

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