[Xen-devel] [PATCH 10/10] linux/x86-64 2.6.18: reserve bootmem differently

["Jan Beulich" <jbeulich@xxxxxxxxxx>]

Do init memory reservation in a single step rather then piece-wise.
This is not really addressing a problem, but simplifies things a little.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>

Index: head-2007-02-27/arch/x86_64/kernel/setup-xen.c
===================================================================
--- head-2007-02-27.orig/arch/x86_64/kernel/setup-xen.c 2007-03-05 
10:00:18.000000000 +0100
+++ head-2007-02-27/arch/x86_64/kernel/setup-xen.c      2007-02-27 
16:27:37.000000000 +0100
@@ -691,6 +691,14 @@ void __init setup_arch(char **cmdline_p)
        contig_initmem_init(0, end_pfn);
 #endif
 
+#ifdef CONFIG_XEN
+       /*
+        * Reserve kernel, physmap, start info, initial page tables, and
+        * direct mapping.
+        */
+       reserve_bootmem_generic(__pa_symbol(&_text),
+                               (table_end << PAGE_SHIFT) - 
__pa_symbol(&_text));
+#else
        /* Reserve direct mapping */
        reserve_bootmem_generic(table_start << PAGE_SHIFT, 
                                (table_end - table_start) << PAGE_SHIFT);
@@ -699,12 +707,6 @@ void __init setup_arch(char **cmdline_p)
        reserve_bootmem_generic(__pa_symbol(&_text),
                                __pa_symbol(&_end) - __pa_symbol(&_text));
 
-#ifdef CONFIG_XEN
-       /* reserve physmap, start info and initial page tables */
-       reserve_bootmem_generic(__pa_symbol(&_end),
-                               (table_start << PAGE_SHIFT) -
-                               __pa_symbol(&_end));
-#else
        /*
         * reserve physical page 0 - it's a special BIOS page on many boxes,
         * enabling clean reboots, SMP operation, laptop functions.



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