[PATCH v5 15/17] xen: Extend getdomaininfo to return the domain's max_gpfn

[Tamas K Lengyel <tklengyel@sec.in.tum.de>]

On ARM determining a domains max_gpfn thus far required the user to be aware
of how the guest's memory is mapped with potential holes and estimate the max
gpfn accordingly. Extending getdomaininfo to just return this value simplifies
the process for the user.

Signed-off-by: Tamas K Lengyel <tklengyel@sec.in.tum.de>
---
 xen/common/domctl.c         | 1 +
 xen/include/public/domctl.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/xen/common/domctl.c b/xen/common/domctl.c
index 638080f..6a57925 100644
--- a/xen/common/domctl.c
+++ b/xen/common/domctl.c
@@ -202,6 +202,7 @@ void getdomaininfo(struct domain *d, struct xen_domctl_getdomaininfo *info)
 
     info->tot_pages         = d->tot_pages;
     info->max_pages         = d->max_pages;
+    info->max_gpfn          = domain_get_maximum_gpfn(d);
     info->outstanding_pages = d->outstanding_pages;
     info->shr_pages         = atomic_read(&d->shr_pages);
     info->paged_pages       = atomic_read(&d->paged_pages);
diff --git a/xen/include/public/domctl.h b/xen/include/public/domctl.h
index 69a8b44..66d29bb 100644
--- a/xen/include/public/domctl.h
+++ b/xen/include/public/domctl.h
@@ -102,6 +102,7 @@ struct xen_domctl_getdomaininfo {
     uint32_t flags;              /* XEN_DOMINF_* */
     uint64_aligned_t tot_pages;
     uint64_aligned_t max_pages;
+    uint64_aligned_t max_gpfn;
     uint64_aligned_t outstanding_pages;
     uint64_aligned_t shr_pages;
     uint64_aligned_t paged_pages;
-- 
2.1.0