[patch] crashkernel allocation failure #1

[patch] crashkernel allocation failure #1

[Gerd Hoffmann]

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   Hi,

The kexec crash kernel area allocation code does some effort to move the 
images (i.e. kernel+initrd) out of the way, so the crashkernel area can 
be allocated at the default location (@16m).

In case initial_images_end is not page aligned a single page in the 
middle of the crash kernel area is leaked though, making the whole move 
effort fail.

The attached patch fixed that by rounding up initial_images_end to the 
next page boundary.

please apply,
   Gerd

[-- Attachment #2: xen-crashkernel.patch --]
[-- Type: text/x-patch, Size: 499 bytes --]

--- xen/arch/x86/setup.c.fix	2007-05-03 09:40:19.000000000 +0200
+++ xen/arch/x86/setup.c	2007-06-19 11:19:11.000000000 +0200
@@ -453,6 +453,7 @@
     if ( initial_images_start < xenheap_phys_end )
         initial_images_start = xenheap_phys_end;
     initial_images_end = initial_images_start + modules_length;
+    initial_images_end = (initial_images_end + PAGE_SIZE - 1) & PAGE_MASK;
 
     move_memory(initial_images_start, 
                 mod[0].mod_start, mod[mbi->mods_count-1].mod_end);

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