Uros Bizjak 558fc8e186 x86/boot: Do not test if AC and ID eflags are changeable on x86_64 ...

The test for the changeabitily of AC and ID EFLAGS is used to
distinguish between i386 and i486 processors (AC) and to test
for CPUID instruction support (ID).

Skip these tests on x86_64 processors as they always supports CPUID.

Also change the return type of has_eflag() to bool.

Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20250307091022.181136-1-ubizjak@gmail.com

2025-03-08 20:36:26 +01:00

615 B

Raw Blame History

View Raw