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Re: [Xen-devel] [PATCH 0/2] make hypercall preemption checks consistent

To: Jan Beulich <JBeulich@xxxxxxxx>
From: Keir Fraser <keir.xen@xxxxxxxxx>
Date: Thu, 13 Mar 2014 10:26:13 +0000
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
Delivery-date: Thu, 13 Mar 2014 10:26:20 +0000
List-id: Xen developer discussion <xen-devel.lists.xen.org>

Jan Beulich

4 March 2014 11:21

- never preempt on the first iteration (ensure forward progress)
- never preempt on the last iteration (pointless/wasteful)
- do cheap checks first

1: common: make hypercall preemption checks consistent
2: x86: make hypercall preemption checks consistent

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>

Acked-by: Keir Fraser <keir@xxxxxxx>

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References:
- [Xen-devel] [PATCH 0/2] make hypercall preemption checks consistent
  - From: Jan Beulich

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