x86/boot/compressed: Pull global variable reference into startup32_load_idt()

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commit d73a257f7f upstream.

In preparation for moving startup32_load_idt() out of head_64.S and
turning it into an ordinary function using the ordinary 32-bit calling
convention, pull the global variable reference to boot32_idt up into
startup32_load_idt() so that startup32_set_idt_entry() does not need to
discover its own runtime physical address, which will no longer be
correlated with startup_32 once this code is moved into .text.

While at it, give startup32_set_idt_entry() static linkage.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lore.kernel.org/r/20221122161017.2426828-11-ardb@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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

parent 530a4271b7

commit 29134968f7

1 changed files with 8 additions and 12 deletions

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arch/x86/boot/compressed/head_64.S

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