[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 e912134782e0 xen/arch/ia64/xen/dom0_ops.c
--- a/xen/arch/ia64/xen/dom0_ops.c Thu Oct 02 17:56:17 2008 +0900
+++ b/xen/arch/ia64/xen/dom0_ops.c Thu Oct 02 17:59:42 2008 +0900
@@ -603,6 +603,12 @@
ret = dom0vp_get_memmap((domid_t)arg0, hnd);
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 e912134782e0 xen/arch/ia64/xen/mm.c
--- a/xen/arch/ia64/xen/mm.c Thu Oct 02 17:56:17 2008 +0900
+++ b/xen/arch/ia64/xen/mm.c Thu Oct 02 17:59:42 2008 +0900
@@ -2508,6 +2508,31 @@
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;
+
+ ret = rcu_lock_target_domain_by_id(targ_domid, &targ_d);
+ if (ret != 0)
+ goto out;
+
+ ret = __dom0vp_add_memdesc(targ_d, &u_memmap_info, u_memmap);
+
+ rcu_unlock_domain(targ_d);
+ out:
+ xfree(u_memmap);
+ return ret;
+}
#endif
// grant table host mapping
diff -r e912134782e0 xen/include/asm-ia64/mm.h
--- a/xen/include/asm-ia64/mm.h Thu Oct 02 17:56:17 2008 +0900
+++ b/xen/include/asm-ia64/mm.h Thu Oct 02 17:59:42 2008 +0900
@@ -449,6 +449,7 @@
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);
extern unsigned long dom0vp_get_memmap(domid_t domid, XEN_GUEST_HANDLE(char)
buffer);
+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)
@@ -458,6 +459,7 @@
#define dom0vp_unexpose_foreign_p2m(dest_dom, dest_gpfn, domid)
(-ENOSYS)
#define __dom0vp_add_memdesc(d, memmap_info, memdesc) (-ENOSYS)
#define dom0vp_get_memmap(domid, buffer) (-ENOSYS)
+#define dom0vp_add_memdesc(d, targ_domid, buffer) (-ENOSYS)
#endif
extern volatile unsigned long *mpt_table;
diff -r e912134782e0 xen/include/public/arch-ia64.h
--- a/xen/include/public/arch-ia64.h Thu Oct 02 17:56:17 2008 +0900
+++ b/xen/include/public/arch-ia64.h Thu Oct 02 17:59:42 2008 +0900
@@ -458,6 +458,9 @@
This hypercall avoids such race. */
#define IA64_DOM0VP_get_memmap 14
+/* Add a new memory descriptor to memmap_info for memory hot plug */
+#define IA64_DOM0VP_add_memdesc 15
+
// 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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