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[95.120.215.139]) by smtp.gmail.com with ESMTPSA id y13sm7051284wrg.8.2019.09.26.05.12.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 26 Sep 2019 05:12:36 -0700 (PDT) References: <20190924124433.96810-1-slp@redhat.com> <20190924124433.96810-8-slp@redhat.com> <23a6e891-c3ba-3991-d627-433eb1fe156d@redhat.com> <87a7ass9ho.fsf@redhat.com> <87o8z737am.fsf@redhat.com> <92575de9-da44-cac4-5b3d-6b07a7a8ea34@redhat.com> <87k19v2whk.fsf@redhat.com> User-agent: mu4e 1.2.0; emacs 26.2 From: Sergio Lopez To: Paolo Bonzini Subject: Re: [PATCH v4 7/8] docs/microvm.txt: document the new microvm machine type In-reply-to: Date: Thu, 26 Sep 2019 14:12:24 +0200 Message-ID: <87impf2r4n.fsf@redhat.com> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="=-=-="; micalg=pgp-sha256; protocol="application/pgp-signature" X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ehabkost@redhat.com, kvm@vger.kernel.org, mst@redhat.com, lersek@redhat.com, mtosatti@redhat.com, qemu-devel@nongnu.org, kraxel@redhat.com, imammedo@redhat.com, philmd@redhat.com, rth@twiddle.net Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --=-=-= Content-Type: text/plain Paolo Bonzini writes: > On 26/09/19 12:16, Sergio Lopez wrote: >>> If KVM is in use, the >>> LAPIC timer frequency is known to be 1 GHz. >>> >>> arch/x86/kernel/kvm.c can just set >>> >>> lapic_timer_period = 1000000000 / HZ; >>> >>> and that should disabled LAPIC calibration if TSC deadline is absent. >> Given that they can only be omitted when an specific set of conditions >> is met, I think I'm going to make them optional but enabled by default. > > Please do introduce the infrastructure to make them OnOffAuto, and for > now make Auto the same as On. We have time to review that since microvm > is not versioned. OK, sounds like a good idea to me. 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