From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCH 19/19] Documentation: ACPI for ARM64 Date: Tue, 29 Jul 2014 14:52:40 +0200 Message-ID: <351673188.FxXsM7MvdA@wuerfel> References: <1406206825-15590-1-git-send-email-hanjun.guo@linaro.org> <20140729112824.GM2576@leverpostej> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Christoffer Dall Cc: Mark Rutland , Mark Brown , Catalin Marinas , Will Deacon , Lv Zheng , "rob.herring@linaro.org" , Lorenzo Pieralisi , Daniel Lezcano , Robert Moore , "linux-acpi@vger.kernel.org" , "grant.likely@linaro.org" , Charles Garcia-Tobin , Robert Richter , Jason Cooper , Marc Zyngier , Liviu Dudau , Bjorn Helgaas , "linux-arm-kernel@lists.infradead.org" , "graeme.gregory@linaro.org" , Randy Dunlap R List-Id: linux-acpi@vger.kernel.org On Tuesday 29 July 2014 14:37:38 Christoffer Dall wrote: > > For reference, Red Hat's current arguing point for ACPI in VMs is > hotplug of things like CPUs and memory for very large VMs, but I > haven't thought too carefully about this just yet, as I don't have a > 100+ core ARM 64-bit hardware lying around... I thought you could run guests with more virtual CPUs that you have physical CPUs on the host. Regarding CPU and memory hotplug, don't we already have PSCI and xen-balloon/virtio-balloon for that? Arnd