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Fri, 11 Sep 2020 01:58:44 -0700 (PDT) Date: Fri, 11 Sep 2020 17:58:41 +0900 From: Sergey Senozhatsky To: Marc Zyngier Subject: Re: [RFC][PATCH 0/4] arm64:kvm: teach guest sched that VCPUs can be preempted Message-ID: <20200911085841.GB562@jagdpanzerIV.localdomain> References: <20200721041742.197354-1-sergey.senozhatsky@gmail.com> <20200817020310.GA1210848@jagdpanzerIV.localdomain> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200911_045849_597337_6259C34B X-CRM114-Status: GOOD ( 10.51 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: joelaf@google.com, Sergey Senozhatsky , linux-kernel@vger.kernel.org, yezengruan , "Wanghaibin \(D\)" , suleiman@google.com, will@kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel