Re: [PATCH 0/3] Remove interrupt stack table usage from x86_64 kernel

[Avi Kivity]

Avi Kivity wrote:
> 1. Add per-cpu IDT

Or we could have just two IDTs - one with IST and one without.  I 
clocked LIDT at 58 cycles (and we need two per heavyweight switch), so 
it's not that wonderful.

--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.

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