From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tamas K Lengyel Subject: [PATCH for-4.5 v12 2/3] xen/arm: Implement domain_get_maximum_gpfn Date: Mon, 29 Sep 2014 17:55:12 +0200 Message-ID: <1412006113-31551-3-git-send-email-tklengyel@sec.in.tum.de> References: <1412006113-31551-1-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: <1412006113-31551-1-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: tim@xen.org, dgdegra@tycho.nsa.gov, Julien Grall , stefano.stabellini@citrix.com, ian.campbell@citrix.com 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 c5b48ef..439cb01 100644 --- a/xen/arch/arm/mm.c +++ b/xen/arch/arm/mm.c @@ -971,7 +971,7 @@ 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, -- 2.1.0