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From: Marc Zyngier <maz@kernel.org>
To: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Sean Christopherson <seanjc@google.com>,
	Paolo Bonzini <pbonzini@redhat.com>,
	kvm@vger.kernel.org, yj226063@alibaba-inc.com
Subject: Re: 3 preempted variables in kvm
Date: Mon, 25 Jan 2021 08:46:20 +0000	[thread overview]
Message-ID: <cb8ee83260dd9cc60acbab5e33c2b6db@kernel.org> (raw)
In-Reply-To: <c14cac63-6a4c-1b5d-6a32-e16117141e94@linux.alibaba.com>

On 2021-01-25 05:49, Alex Shi wrote:
> Hi Sean,
> 
> Thanks a lot for the detailed explanations.
> Yes, they are all meaningful variables on x86. But for more archs,
> guess the lock
> issue on different arch's guest are similar. Maybe a abstraction on
> the point would
> be very helpful. Any comments?

It depends on what you have in mind. The whole "yield to another
vcpu" mechanism is already abstracted behind kvm_vcpu_on_spin(),
which at arm64, s390 and x86 are using. You could investigate
whether this is a valid approach for Power and MIPS.

Thanks,

         M.
-- 
Jazz is not dead. It just smells funny...

      reply	other threads:[~2021-01-26 20:29 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-22 15:11 3 preempted variables in kvm Alex Shi
2021-01-22 19:30 ` Sean Christopherson
2021-01-25  5:49   ` Alex Shi
2021-01-25  8:46     ` Marc Zyngier [this message]

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