[PATCH] x86-64: Avoid overflows during apic timer calibration

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- Use 64bit TSC calculations to avoid handling overflow
- Use 32bit unsigned arithmetic for the APIC timer. This
way overflows are handled correctly.
- Fix exit check of loop to account for apic timer counting down

Signed-off-by: dpreed@reed.com
Signed-off-by: Andi Kleen <ak@suse.de>

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David P. Reed 2007-05-02 19:27:20 +02:00 • committed by Andi Kleen

parent 9d016dd43b

commit 4637a74cf2

1 changed files with 6 additions and 5 deletions

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arch/x86_64/kernel/apic.c

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