From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tamas K Lengyel Subject: [PATCH V14 2/7] xen/arm: Implement domain_get_maximum_gpfn Date: Thu, 26 Mar 2015 23:05:26 +0100 Message-ID: <1427407531-31694-3-git-send-email-tklengyel@sec.in.tum.de> References: <1427407531-31694-1-git-send-email-tklengyel@sec.in.tum.de> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1427407531-31694-1-git-send-email-tklengyel@sec.in.tum.de> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org Cc: wei.liu2@citrix.com, ian.campbell@citrix.com, stefano.stabellini@eu.citrix.com, ian.jackson@eu.citrix.com, julien.grall@linaro.org, tim@xen.org, stefano.stabellini@citrix.com, jbeulich@suse.com, keir@xen.org List-Id: xen-devel@lists.xenproject.org From: Julien Grall The function domain_get_maximum_gpfn is returning the maximum gpfn ever mapped in the guest. We can use d->arch.p2m.max_mapped_gfn for this purpose. We use this in xenaccess as to avoid the user attempting to set page permissions on pages which don't exist for the domain, as a non-arch specific sanity check. Signed-off-by: Julien Grall --- xen/arch/arm/mm.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c index 7d4ba0c..ca0aa69 100644 --- a/xen/arch/arm/mm.c +++ b/xen/arch/arm/mm.c @@ -985,7 +985,7 @@ int page_is_ram_type(unsigned long mfn, unsigned long mem_type) unsigned long domain_get_maximum_gpfn(struct domain *d) { - return -ENOSYS; + return d->arch.p2m.max_mapped_gfn; } void share_xen_page_with_guest(struct page_info *page, -- 2.1.4