xen/domctl: Return arch_config via getdomaininfo

This allows toolstack software to distinguish HVM from PVH guests.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Wei Liu <wei.liu2@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
---
v2: bump domctl version number

tools/libxc/include/xenctrl.h

@@ -456,6 +456,7 @@ typedef struct xc_dominfo {
     unsigned int  max_vcpu_id;
     xen_domain_handle_t handle;
     unsigned int  cpupool;
+    struct xen_arch_domainconfig arch_config;
 } xc_dominfo_t;
 
 typedef xen_domctl_getdomaininfo_t xc_domaininfo_t;

tools/libxc/xc_domain.c

@@ -421,6 +421,7 @@ int xc_domain_getinfo(xc_interface *xch,
         info->nr_online_vcpus = domctl.u.getdomaininfo.nr_online_vcpus;
         info->max_vcpu_id = domctl.u.getdomaininfo.max_vcpu_id;
         info->cpupool = domctl.u.getdomaininfo.cpupool;
+        info->arch_config = domctl.u.getdomaininfo.arch_config;
 
         memcpy(info->handle, domctl.u.getdomaininfo.handle,
                sizeof(xen_domain_handle_t));

xen/arch/x86/domctl.c

@@ -345,6 +345,8 @@ void arch_get_domain_info(const struct domain *d,
 {
     if ( paging_mode_hap(d) )
         info->flags |= XEN_DOMINF_hap;
+
+    info->arch_config.emulation_flags = d->arch.emulation_flags;
 }
 
 #define MAX_IOPORTS 0x10000

xen/include/public/domctl.h

@@ -38,7 +38,7 @@
 #include "hvm/save.h"
 #include "memory.h"
 
-#define XEN_DOMCTL_INTERFACE_VERSION 0x0000000e
+#define XEN_DOMCTL_INTERFACE_VERSION 0x0000000f
 
 /*
  * NB. xen_domctl.domain is an IN/OUT parameter for this operation.
@@ -116,6 +116,7 @@ struct xen_domctl_getdomaininfo {
     uint32_t ssidref;
     xen_domain_handle_t handle;
     uint32_t cpupool;
+    struct xen_arch_domainconfig arch_config;
 };
 typedef struct xen_domctl_getdomaininfo xen_domctl_getdomaininfo_t;
 DEFINE_XEN_GUEST_HANDLE(xen_domctl_getdomaininfo_t);