From: Julien Grall Date: Mon, 20 Apr 2015 15:06:21 +0000 (+0200) Subject: xen/arm: Implement domain_get_maximum_gpfn X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~3393 X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https:/%22bookmarks://%22Dat/%22http:/www.example.com/cgi/%22https:/%22bookmarks:/%22Dat?a=commitdiff_plain;h=7b7d7b56effff9c5af871892c552e30da7619f82;p=xen.git xen/arm: Implement domain_get_maximum_gpfn 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 Acked-by: Ian Campbell --- diff --git a/xen/arch/arm/mm.c b/xen/arch/arm/mm.c index 11a0be84c8..a91ea774f1 100644 --- a/xen/arch/arm/mm.c +++ b/xen/arch/arm/mm.c @@ -996,7 +996,7 @@ 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,