Re: [PATCH 9/9] qspinlock,x86,kvm: Implement KVM support for paravirt qspinlock
From: Raghavendra K T
Date: Fri Mar 20 2015 - 04:01:21 EST
On 03/20/2015 02:38 AM, Waiman Long wrote:
On 03/19/2015 06:01 AM, Peter Zijlstra wrote:
[...]
You are probably right. The initial apply_paravirt() was done before the
SMP boot. Subsequent ones were at kernel module load time. I put a
counter in the __native_queue_spin_unlock() and it registered 26949
unlock calls in a 16-cpu guest before it got patched out.
because even printks take lock..
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