[IA64] add IA64_dom0VP_add_memdesc hypercall.
This hypercall is necessary for pv_ops balloon driver which
uses Linux memory hot plug in order to tell the region
which will be populated.
Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
diff -r d40dfdd3bfdb xen/arch/ia64/xen/dom0_ops.c
--- a/xen/arch/ia64/xen/dom0_ops.c Mon Sep 29 21:18:21 2008 +0900
+++ b/xen/arch/ia64/xen/dom0_ops.c Mon Sep 29 21:19:36 2008 +0900
@@ -607,6 +607,12 @@
case IA64_DOM0VP_unexpose_foreign_p2m:
ret = dom0vp_unexpose_foreign_p2m(d, arg0, arg1);
break;
+ case IA64_DOM0VP_add_memdesc: {
+ XEN_GUEST_HANDLE(char) hnd;
+ set_xen_guest_handle(hnd, (char*)arg1);
+ ret = dom0vp_add_memdesc(d, (domid_t)arg0, hnd);
+ break;
+ }
default:
ret = -1;
printk("unknown dom0_vp_op 0x%lx\n", cmd);
diff -r d40dfdd3bfdb xen/arch/ia64/xen/mm.c
--- a/xen/arch/ia64/xen/mm.c Mon Sep 29 21:18:21 2008 +0900
+++ b/xen/arch/ia64/xen/mm.c Mon Sep 29 21:19:36 2008 +0900
@@ -2461,6 +2461,42 @@
free_domheap_pages(page, order);
return ret;
}
+
+unsigned long
+dom0vp_add_memdesc(struct domain *d,
+ domid_t targ_domid, XEN_GUEST_HANDLE(char) buffer)
+{
+ unsigned long ret = 0;
+ struct domain *targ_d;
+ struct xen_ia64_memmap_info u_memmap_info;
+ char *u_memmap;
+
+ ret = memmap_info_copy_from_guest(&u_memmap_info, &u_memmap, buffer);
+ if (ret != 0)
+ return ret;
+
+ if (targ_domid == DOMID_SELF)
+ targ_d = rcu_lock_current_domain();
+ else {
+ targ_d = rcu_lock_domain_by_id(targ_domid);
+ if (targ_d == NULL) {
+ ret = -ENOENT;
+ goto out;
+ }
+ if (!IS_PRIV_FOR(current->domain, targ_d)) {
+ ret = -EPERM;
+ goto out_unlock;
+ }
+ }
+
+ ret = __dom0vp_add_memdesc(targ_d, &u_memmap_info, u_memmap);
+
+ out_unlock:
+ rcu_unlock_domain(targ_d);
+ out:
+ xfree(u_memmap);
+ return ret;
+}
#endif
// grant table host mapping
diff -r d40dfdd3bfdb xen/include/asm-ia64/mm.h
--- a/xen/include/asm-ia64/mm.h Mon Sep 29 21:18:21 2008 +0900
+++ b/xen/include/asm-ia64/mm.h Mon Sep 29 21:19:36 2008 +0900
@@ -448,6 +448,7 @@
extern void foreign_p2m_destroy(struct domain* d);
extern unsigned long dom0vp_expose_foreign_p2m(struct domain* dest_dom,
unsigned long dest_gpfn, domid_t domid, XEN_GUEST_HANDLE(char) buffer, unsigned
long flags);
extern unsigned long dom0vp_unexpose_foreign_p2m(struct domain* dest_dom,
unsigned long dest_gpfn, domid_t domid);
+unsigned long dom0vp_add_memdesc(struct domain *d, domid_t targ_domid,
XEN_GUEST_HANDLE(char) buffer);
#else
#define expose_p2m_init() do { } while (0)
#define dom0vp_expose_p2m(d, conv_start_gpfn, assign_start_gpfn, expose_size,
granule_pfn) (-ENOSYS)
@@ -456,6 +457,7 @@
#define dom0vp_expose_foreign_p2m(dest_dom, dest_gpfn, domid, buffer, flags)
(-ENOSYS)
#define dom0vp_unexpose_foreign_p2m(dest_dom, dest_gpfn, domid)
(-ENOSYS)
#define __dom0vp_add_memdesc(d, memmap_info, memdesc) (-ENOSYS)
+#define dom0vp_add_memdesc(d, targ_domid, buffer) (-ENOSYS)
#endif
extern volatile unsigned long *mpt_table;
diff -r d40dfdd3bfdb xen/include/public/arch-ia64.h
--- a/xen/include/public/arch-ia64.h Mon Sep 29 21:18:21 2008 +0900
+++ b/xen/include/public/arch-ia64.h Mon Sep 29 21:19:36 2008 +0900
@@ -464,6 +464,9 @@
/* unexpose the foreign domain's p2m table into privileged domain */
#define IA64_DOM0VP_unexpose_foreign_p2m 13
+/* Add a new memory descriptor to memmap_info for memory hot plug */
+#define IA64_DOM0VP_add_memdesc 14
+
// flags for page assignement to pseudo physical address space
#define _ASSIGN_readonly 0
#define ASSIGN_readonly (1UL << _ASSIGN_readonly)
memmap-info-hypercall.patch
Description: Text Data
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