From mboxrd@z Thu Jan 1 00:00:00 1970 From: Julien Grall Subject: Re: ARM Guest VM Type Date: Sun, 27 Apr 2014 20:33:46 +0100 Message-ID: <535D5B9A.7000505@linaro.org> References: <535ADAD4.6040000@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: Tamas Lengyel , Stefano Stabellini Cc: Wei Huang , Ian Campbell , "xen-devel@lists.xen.org" List-Id: xen-devel@lists.xenproject.org Hello Tamas, On 27/04/14 11:25, Tamas Lengyel wrote: > What about paging? On x86 it's configurable whether I want the guest to > use shadow or HAP via hap=0/1 but I haven't find anything about that for > the ARM side. Looking at the source I got the feeling that it's shadow > paging if the guest is created with the config shown in > http://wiki.xenproject.org/wiki/Xen_ARM_with_Virtualization_Extensions#DomU_kernel_and_DTS. > Please correct me if I'm wrong! Thanks =) Xen on ARM takes directly advantage of the hardware virtualization feature. ARM processors provide a stage 2 translation (i.e guest PA -> host PA). We don't support other kind of P2M translation (such as shadow PT) on ARM. Regards, -- Julien Grall