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Thu, 09 Jan 2020 09:46:14 +0000 MIME-Version: 1.0 Date: Thu, 09 Jan 2020 09:46:14 +0000 From: Marc Zyngier To: Jianyong Wu Subject: Re: [RFC PATCH v9 7/8] ptp: arm64: Enable ptp_kvm for arm64 In-Reply-To: References: <20191210034026.45229-1-jianyong.wu@arm.com> <20191210034026.45229-8-jianyong.wu@arm.com> Message-ID: X-Sender: maz@kernel.org User-Agent: Roundcube Webmail/1.3.8 X-SA-Exim-Connect-IP: 51.254.78.96 X-SA-Exim-Rcpt-To: Jianyong.Wu@arm.com, netdev@vger.kernel.org, yangbo.lu@nxp.com, john.stultz@linaro.org, tglx@linutronix.de, pbonzini@redhat.com, sean.j.christopherson@intel.com, richardcochran@gmail.com, Mark.Rutland@arm.com, will@kernel.org, Suzuki.Poulose@arm.com, Steven.Price@arm.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org, Steve.Capper@arm.com, Kaly.Xin@arm.com, Justin.He@arm.com, nd@arm.com, kvm-owner@vger.kernel.org X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Cc: Justin He , kvm-owner@vger.kernel.org, kvm@vger.kernel.org, netdev@vger.kernel.org, richardcochran@gmail.com, linux-kernel@vger.kernel.org, sean.j.christopherson@intel.com, Steven Price , john.stultz@linaro.org, yangbo.lu@nxp.com, pbonzini@redhat.com, tglx@linutronix.de, nd , will@kernel.org, kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu On 2020-01-09 09:24, Marc Zyngier wrote: > On 2020-01-09 05:59, Jianyong Wu wrote: [...] >> So we focus it on arm64. Also I have never tested it on arm32 machine >> ( we lack of arm32 machine) > > I'm sure your employer can provide you with such a box. I can probably > even tell you which cupboard they are stored in... ;-) > >> Do you think it's necessary to enable ptp_kvm on arm32? If so, I can >> do that. > > I can't see why we wouldn't, given that it should be a zero effort task > (none of the code here is arch specific). To be clear, what I'm after is support for 32bit *guests*. I don't expect any issue with a 32bit host (it's all common code), but you should be able to test 32bit guests pretty easily (most ARMv8.0 CPUs support 32bit EL1). M. -- Jazz is not dead. It just smells funny... _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm