[Xen-devel] [PATCH 3/5] dump-core take 2: libxc: add xc_domain_tranlate_gpfn()

[Isaku Yamahata <yamahata@xxxxxxxxxxxxx>]

# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Date 1169088584 -32400
# Node ID 9d5b9b6ff32744c912c44cfb9944646224923628
# Parent  c2db94de4afc030170609d7d9de6daf334b17182
libxc: add xc_domain_translate_gpfn for XENMEM_translate_gpfn_list
which is used by dump-core ia64 support.
PATCHNAME: dump_core_xc_domain_translate_gpfn

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

diff -r c2db94de4afc -r 9d5b9b6ff327 tools/libxc/xc_domain.c
--- a/tools/libxc/xc_domain.c   Thu Jan 18 15:13:11 2007 +0900
+++ b/tools/libxc/xc_domain.c   Thu Jan 18 11:49:44 2007 +0900
@@ -556,6 +556,30 @@ int xc_domain_memory_populate_physmap(in
         err = -1;
     }
 
+    return err;
+}
+
+int xc_domain_translate_gpfn(int xc_handle,
+                             uint32_t domid,
+                             unsigned long nr_gpfns,
+                             xen_pfn_t *gpfn_list,
+                             xen_pfn_t *mfn_list)
+{
+    int err;
+    struct xen_translate_gpfn_list translate = {
+        .domid = domid,
+        .nr_gpfns = nr_gpfns
+    };
+    set_xen_guest_handle(translate.gpfn_list, gpfn_list);
+    set_xen_guest_handle(translate.mfn_list, mfn_list);
+    err = xc_memory_op(xc_handle, XENMEM_translate_gpfn_list, &translate);
+    if ( err )
+    {
+        DPRINTF("Failed to translate for dom %d: %ld gpfns\n",
+                domid, nr_gpfns);
+        errno = -err;
+    }
+    
     return err;
 }
 
diff -r c2db94de4afc -r 9d5b9b6ff327 tools/libxc/xc_private.c
--- a/tools/libxc/xc_private.c  Thu Jan 18 15:13:11 2007 +0900
+++ b/tools/libxc/xc_private.c  Thu Jan 18 11:49:44 2007 +0900
@@ -210,6 +210,7 @@ int xc_memory_op(int xc_handle,
     DECLARE_HYPERCALL;
     struct xen_memory_reservation *reservation = arg;
     struct xen_machphys_mfn_list *xmml = arg;
+    struct xen_translate_gpfn_list *translate = arg;
     xen_pfn_t *extent_start;
     long ret = -EINVAL;
 
@@ -256,6 +257,32 @@ int xc_memory_op(int xc_handle,
         if ( lock_pages(arg, sizeof(struct xen_add_to_physmap)) )
         {
             PERROR("Could not lock");
+            goto out1;
+        }
+        break;
+    case XENMEM_translate_gpfn_list:
+        if ( lock_pages(translate, sizeof(*translate)) != 0 )
+        {
+            PERROR("Coult not lock");
+            goto out1;
+        }
+        get_xen_guest_handle(extent_start, translate->gpfn_list);
+        if ( lock_pages(extent_start,
+                        translate->nr_gpfns * sizeof(xen_pfn_t)) )
+        {
+            PERROR("Coult not lock");
+            unlock_pages(translate, sizeof(*translate));
+            goto out1;
+        }
+        get_xen_guest_handle(extent_start, translate->mfn_list);
+        if ( lock_pages(extent_start,
+                        translate->nr_gpfns * sizeof(xen_pfn_t)) )
+        {
+            PERROR("Coult not lock");
+            unlock_pages(translate, sizeof(*translate));
+            get_xen_guest_handle(extent_start, translate->gpfn_list);
+            unlock_pages(extent_start,
+                         translate->nr_gpfns * sizeof(xen_pfn_t));
             goto out1;
         }
         break;
@@ -282,6 +309,13 @@ int xc_memory_op(int xc_handle,
         break;
     case XENMEM_add_to_physmap:
         unlock_pages(arg, sizeof(struct xen_add_to_physmap));
+        break;
+    case XENMEM_translate_gpfn_list:
+        unlock_pages(translate, sizeof(*translate));
+        get_xen_guest_handle(extent_start, translate->gpfn_list);
+        unlock_pages(extent_start, translate->nr_gpfns * sizeof(xen_pfn_t));
+        get_xen_guest_handle(extent_start, translate->mfn_list);
+        unlock_pages(extent_start, translate->nr_gpfns * sizeof(xen_pfn_t));
         break;
     }
 
diff -r c2db94de4afc -r 9d5b9b6ff327 tools/libxc/xenctrl.h
--- a/tools/libxc/xenctrl.h     Thu Jan 18 15:13:11 2007 +0900
+++ b/tools/libxc/xenctrl.h     Thu Jan 18 11:49:44 2007 +0900
@@ -457,6 +457,12 @@ int xc_domain_memory_populate_physmap(in
                                       unsigned int address_bits,
                                       xen_pfn_t *extent_start);
 
+int xc_domain_translate_gpfn(int xc_handle,
+                             uint32_t domid,
+                             unsigned long nr_gpfns,
+                             xen_pfn_t *gpfn_list,
+                             xen_pfn_t *mfn_list);
+
 int xc_domain_ioport_permission(int xc_handle,
                                 uint32_t domid,
                                 uint32_t first_port,
--
yamahata

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