From: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
To: Marc Zyngier <maz@kernel.org>
Cc: joelaf@google.com,
Sergey Senozhatsky <sergey.senozhatsky@gmail.com>,
linux-kernel@vger.kernel.org, suleiman@google.com,
will@kernel.org, kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org
Subject: Re: [RFC][PATCH 0/4] arm64:kvm: teach guest sched that VCPUs can be preempted
Date: Fri, 11 Sep 2020 17:58:41 +0900 [thread overview]
Message-ID: <20200911085841.GB562@jagdpanzerIV.localdomain> (raw)
In-Reply-To: <cbcfb402b7fdb8a2a45b80fbb0e79f3e@kernel.org>
My apologies for the slow reply.
On (20/08/17 13:25), Marc Zyngier wrote:
>
> It really isn't the same thing at all. You are exposing PV spinlocks,
> while Sergey exposes preemption to vcpus.
>
Correct, we see vcpu preemption as a "fundamental" feature, with
consequences that affect scheduling, which is a core feature :)
Marc, is there anything in particular that you dislike about this RFC
patch set? Joel has some ideas, which we may discuss offline if that
works for you.
-ss
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next prev parent reply other threads:[~2020-09-11 9:16 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-21 4:17 [RFC][PATCH 0/4] arm64:kvm: teach guest sched that VCPUs can be preempted Sergey Senozhatsky
2020-07-21 4:17 ` [RFC][PATCH 1/4] arm64:kvm: define pv_state SMCCC HV calls Sergey Senozhatsky
2020-07-21 4:17 ` [RFC][PATCH 2/4] arm64: add guest pvstate support Sergey Senozhatsky
2020-07-21 4:17 ` [RFC][PATCH 3/4] arm64: add host " Sergey Senozhatsky
2020-07-21 4:17 ` [RFC][PATCH 4/4] arm64: do not use dummy vcpu_is_preempted() anymore Sergey Senozhatsky
2020-08-17 2:03 ` [RFC][PATCH 0/4] arm64:kvm: teach guest sched that VCPUs can be preempted Sergey Senozhatsky
2020-08-17 12:03 ` yezengruan
2020-08-17 12:25 ` Marc Zyngier
2020-08-17 14:15 ` yezengruan
2020-09-11 8:58 ` Sergey Senozhatsky [this message]
2020-12-08 20:02 ` Joel Fernandes
2020-12-09 9:43 ` Marc Zyngier
2020-12-10 1:39 ` Joel Fernandes
2020-12-10 8:45 ` Marc Zyngier
2020-12-11 9:34 ` Quentin Perret
2020-12-16 1:45 ` Joel Fernandes
2020-09-11 8:46 ` Sergey Senozhatsky
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