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xen-devel
Re: [Xen-devel] [PATCH] Add SCHEDOP_block_on
On Fri, Mar 10, 2006 at 04:49:47PM +0000, Keir Fraser wrote:
> I really don't much like the change this adds to evtchn_set_pending(),
Could you explain why? Would you prefer an explicit vcpu_flag or
something?
Whilst I cannot offhand think of a case other than kernel debuggers that
need this, it's also presumably true that it will apply across all domU
kernels (I do not know if kdb gets serious use these days, but ...)
> HYPERVISOR_set_callbacks(<dummy irq handler>);
This would work (I think), but it's rather unpleasant to say the least.
> come up with some suitable code to restore normal event delivery
> without Xen interface changes.
We do need this. It's quite tricky having to carefully synthesise the
pending_sel bit etc.
regards,
john
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