[Xen-devel] [PATCH] libxl: accout for shadow memory for PV guests too

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

Accout for shadow memory for PV guests too

We need to accout for the memory needed by shadow pagetables even for PV
guests, because in that case shadow pagetables are used during live
migration.


Signed-off-by: Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>

diff -r 7d2fdc083c9c tools/libxl/libxl.c
--- a/tools/libxl/libxl.c       Thu Nov 18 12:28:31 2010 +0000
+++ b/tools/libxl/libxl.c       Thu Nov 18 14:46:26 2010 +0000
@@ -3023,7 +3023,7 @@ int libxl_domain_need_memory(libxl_ctx *
         if (strstr(dm_info->device_model, "stubdom-dm"))
             *need_memkb += 32 * 1024;
     } else
-        *need_memkb += LIBXL_PV_EXTRA_MEMORY;
+        *need_memkb += b_info->shadow_memkb + LIBXL_PV_EXTRA_MEMORY;
     if (*need_memkb % (2 * 1024))
         *need_memkb += (2 * 1024) - (*need_memkb % (2 * 1024));
     return 0;
diff -r 7d2fdc083c9c tools/libxl/xl_cmdimpl.c
--- a/tools/libxl/xl_cmdimpl.c  Thu Nov 18 12:28:31 2010 +0000
+++ b/tools/libxl/xl_cmdimpl.c  Thu Nov 18 14:46:26 2010 +0000
@@ -332,8 +332,8 @@ static void init_build_info(libxl_domain
     b_info->target_memkb = b_info->max_memkb;
     b_info->disable_migrate = 0;
     b_info->cpuid = NULL;
+    b_info->shadow_memkb = 0;
     if (c_info->hvm) {
-        b_info->shadow_memkb = 0; /* Set later */
         b_info->video_memkb = 8 * 1024;
         b_info->kernel.path = strdup("hvmloader");
         b_info->hvm = 1;

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