Hi Juergen, On 20/09/17 07:34, Juergen Gross wrote:
Add the maximum possible mfn to struct xen_sysctl_physinfo in order to enable Xen tools to size the grant table frame limits for a domUSigned-off-by: Juergen Gross <jgr...@suse.com> --- xen/common/sysctl.c | 1 + xen/include/public/sysctl.h | 2 ++ 2 files changed, 3 insertions(+) diff --git a/xen/common/sysctl.c b/xen/common/sysctl.c index a6882d1c9d..22f5d991f6 100644 --- a/xen/common/sysctl.c +++ b/xen/common/sysctl.c @@ -266,6 +266,7 @@ long do_sysctl(XEN_GUEST_HANDLE_PARAM(xen_sysctl_t) u_sysctl) get_outstanding_claims(&pi->free_pages, &pi->outstanding_pages); pi->scrub_pages = 0; pi->cpu_khz = cpu_khz; + pi->max_mfn = get_upper_mfn_bound() - 1; arch_do_physinfo(pi);if ( copy_to_guest(u_sysctl, op, 1) )diff --git a/xen/include/public/sysctl.h b/xen/include/public/sysctl.h index 7830b987da..86b9ced86b 100644 --- a/xen/include/public/sysctl.h +++ b/xen/include/public/sysctl.h @@ -108,6 +108,8 @@ struct xen_sysctl_physinfo {/* XEN_SYSCTL_PHYSCAP_??? */uint32_t capabilities; + + uint64_t max_mfn; /* Largest possible MFN on this host */
Don't you need to bump XEN_SYSCTL_INTERFACE_VERSION because of this change?
}; typedef struct xen_sysctl_physinfo xen_sysctl_physinfo_t; DEFINE_XEN_GUEST_HANDLE(xen_sysctl_physinfo_t);
Cheers, -- Julien Grall _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
