From: Keir Fraser <keir.fraser@citrix.com>
Date: Fri, 9 Jan 2009 11:44:35 +0000 (+0000)
Subject: New XENMAPSPACE_gmfn parameter for XENMEM_add_to_physmap.
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14014^2~84
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=3e50af3d8776193538d9538445e62012ade10c85;p=xen.git

New XENMAPSPACE_gmfn parameter for XENMEM_add_to_physmap.

Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
---

diff --git a/xen/arch/ia64/xen/mm.c b/xen/arch/ia64/xen/mm.c
index 66336182fe..1213f7de96 100644
--- a/xen/arch/ia64/xen/mm.c
+++ b/xen/arch/ia64/xen/mm.c
@@ -3295,38 +3295,40 @@ arch_memory_op(int op, XEN_GUEST_HANDLE(void) arg)
 
             spin_unlock(&d->grant_table->lock);
             break;
-        case XENMAPSPACE_mfn:
-        {
-            if ( get_page_from_pagenr(xatp.idx, d) ) {
-                struct xen_ia64_memmap_info memmap_info;
-                efi_memory_desc_t md;
-                int ret;
-
-                mfn = xatp.idx;
-                page = mfn_to_page(mfn);
-
-                memmap_info.efi_memmap_size = sizeof(md);
-                memmap_info.efi_memdesc_size = sizeof(md);
-                memmap_info.efi_memdesc_version =
-                    EFI_MEMORY_DESCRIPTOR_VERSION;
-
-                md.type = EFI_CONVENTIONAL_MEMORY;
-                md.pad = 0;
-                md.phys_addr = xatp.gpfn << PAGE_SHIFT;
-                md.virt_addr = 0;
-                md.num_pages = 1UL << (PAGE_SHIFT - EFI_PAGE_SHIFT);
-                md.attribute = EFI_MEMORY_WB;
-
-                ret = __dom0vp_add_memdesc(d, &memmap_info, (char*)&md);
-                if (ret != 0) {
-                    put_page(page);
-                    rcu_unlock_domain(d);
-                    gdprintk(XENLOG_DEBUG,
-                             "%s:%d td %d gpfn 0x%lx mfn 0x%lx ret %d\n",
-                             __func__, __LINE__,
-                             d->domain_id, xatp.gpfn, xatp.idx, ret);
-                    return ret;
-                }
+        case XENMAPSPACE_gmfn:
+            xatp.idx = gmfn_to_mfn(d, xatp.idx);
+        case XENMAPSPACE_mfn: {
+            struct xen_ia64_memmap_info memmap_info;
+            efi_memory_desc_t md;
+            int ret;
+
+            if ( !get_page_from_pagenr(xatp.idx, d) )
+                break;
+
+            mfn = xatp.idx;
+            page = mfn_to_page(mfn);
+
+            memmap_info.efi_memmap_size = sizeof(md);
+            memmap_info.efi_memdesc_size = sizeof(md);
+            memmap_info.efi_memdesc_version =
+                EFI_MEMORY_DESCRIPTOR_VERSION;
+
+            md.type = EFI_CONVENTIONAL_MEMORY;
+            md.pad = 0;
+            md.phys_addr = xatp.gpfn << PAGE_SHIFT;
+            md.virt_addr = 0;
+            md.num_pages = 1UL << (PAGE_SHIFT - EFI_PAGE_SHIFT);
+            md.attribute = EFI_MEMORY_WB;
+
+            ret = __dom0vp_add_memdesc(d, &memmap_info, (char*)&md);
+            if (ret != 0) {
+                put_page(page);
+                rcu_unlock_domain(d);
+                gdprintk(XENLOG_DEBUG,
+                         "%s:%d td %d gpfn 0x%lx mfn 0x%lx ret %d\n",
+                         __func__, __LINE__,
+                         d->domain_id, xatp.gpfn, xatp.idx, ret);
+                return ret;
             }
             break;
         }
diff --git a/xen/arch/x86/mm.c b/xen/arch/x86/mm.c
index 15b3fe2317..142b9f1efb 100644
--- a/xen/arch/x86/mm.c
+++ b/xen/arch/x86/mm.c
@@ -3808,14 +3808,14 @@ long arch_memory_op(int op, XEN_GUEST_HANDLE(void) arg)
 
             spin_unlock(&d->grant_table->lock);
             break;
+        case XENMAPSPACE_gmfn:
+            xatp.idx = gmfn_to_mfn(d, xatp.idx);
         case XENMAPSPACE_mfn:
-        {
-            if ( get_page_from_pagenr(xatp.idx, d) ) {
-                mfn = xatp.idx;
-                page = mfn_to_page(mfn);
-            }
+            if ( !get_page_from_pagenr(xatp.idx, d) )
+                break;
+            mfn = xatp.idx;
+            page = mfn_to_page(mfn);
             break;
-        }
         default:
             break;
         }
diff --git a/xen/include/public/memory.h b/xen/include/public/memory.h
index 6edd59b5ef..5ff7ef4447 100644
--- a/xen/include/public/memory.h
+++ b/xen/include/public/memory.h
@@ -206,7 +206,8 @@ struct xen_add_to_physmap {
     /* Source mapping space. */
 #define XENMAPSPACE_shared_info 0 /* shared info page */
 #define XENMAPSPACE_grant_table 1 /* grant table page */
-#define XENMAPSPACE_mfn         2 /* usual MFN */
+#define XENMAPSPACE_mfn         2 /* MFN */
+#define XENMAPSPACE_gmfn        3 /* GMFN */
     unsigned int space;
 
     /* Index into source mapping space. */