Re: [Xen-devel] irq processing related question ....

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 9 Mar 2005, at 00:17, Himanshu Raj wrote:

> I was looking at the definition of FIRST_EXTERNAL_VECTOR in
> xen/include/asm-x86/irq.h and linux-2.6.10-.../mach-xen/irq_vectors.h. 
> They are
> not the same. Furthermore, the hypercall vector is defined 
> differently. Is
> there any correlation between these symbols in different files? I 
> thought the
> external intr vectors started after the 32 TRAPs, no?
I raised to 0x30 so that 0x20-0x2f can be used as 'fast trap' vectors 
by OSes that use them. If none of the BSDs use that trap range then 
FIRST_EXTERNAL_VECTOR can be dropped to 0x20 -- we are unlikely to be 
supporting paravirtual Windows OSes in teh forseeable future. :-)
 -- Keir



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