Date: Tue, 10 Oct 2000 00:44:58 +0200 From: "Andi Kleen" <[EMAIL PROTECTED]> On Mon, Oct 09, 2000 at 11:41:13PM +0100, Alan Cox wrote: > I dont actually know a CPU that doesnt have one in SMP mode. Its just often > behind an I/O interface that is slower than ideal Where would you put it for IA32 ? I don't know any free MSR that could be abused for that, and acessing MSRs is insanely slow anyways. Any other ideas ? The local APIC holds the hardware cpu number (which happens to equal the logical cpu number in the current x86 code). And I believe the local APIC has a 32-bit scratch register or 2 as well... but don't quote me on that one. Later, David S. Miller [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
- Re: Calling current() from interrup... Kenn Humborg
- Re: Calling current() from interrupt context Roman Zippel
- Re: Calling current() from interrupt context Francis Galiegue
- Re: Calling current() from interrupt context Linus Torvalds
- Re: Calling current() from interrupt context Keith Owens
- Re: Calling current() from interrupt context Kenn Humborg
- Re: Calling current() from interrupt context Alan Cox
- Re: Calling current() from interrupt con... Andi Kleen
- Re: Calling current() from interrup... Alan Cox
- Re: Calling current() from inte... Andi Kleen
- Re: Calling current() from inte... David S. Miller
- Re: Calling current() from inte... Jeff V. Merkey
- Re: Calling current() from inte... Jeff V. Merkey
- Re: Calling current() from inte... Jeff V. Merkey
- Re: Calling current() from inte... Jeff V. Merkey
- Re: Calling current() from inte... Alan Cox
- Re: Calling current() from interrup... Kenn Humborg
- Re: Calling current() from inte... Andi Kleen
- Re: Calling current() from inte... Kenn Humborg
- Re: Calling current() from interrupt con... Linus Torvalds
- Re: Calling current() from interrup... Jamie Lokier