Messages in this thread | | | Subject | Re: [ACPI] Re: Linux 2.4.26-rc1 (cmpxchg vs 80386 build) | From | Len Brown <> | Date | 30 Mar 2004 12:44:33 -0500 |
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Sorry I didn't reply to this thread, after Alan wrote I figured the topic was closed;-)
Yes, per my initial message, gcc _will_ generate cmpxchg for the 80386 build. Indeed, it has been doing so for over a year with ACPI's previous private (and flawed) asm() invocation of cmpxchg.
Andi/Alan suggested we invoke cmpxchg always in ACPI, but disable ACPI at boot-time in the unlikely event we find ourselves running on a cpu without that instruction.
Luming has already taking a swing at this patch here: http://bugzilla.kernel.org/show_bug.cgi?id=2391
thanks, -Len
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