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authorDavid Vrabel <dvrabel@cantab.net>2012-05-03 16:15:42 +0100
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2012-05-07 15:32:24 -0400
commit83d51ab473dddde7df858015070ed22b84ebe9a9 (patch)
treec02be9696877ae5d7c00a524ae4daf2f99c181f1 /arch/x86/xen/enlighten.c
parent96dc08b35c4af8cb5810450602590706f2593a5f (diff)
xen/setup: update VA mapping when releasing memory during setup
In xen_memory_setup(), if a page that is being released has a VA mapping this must also be updated. Otherwise, the page will be not released completely -- it will still be referenced in Xen and won't be freed util the mapping is removed and this prevents it from being reallocated at a different PFN. This was already being done for the ISA memory region in xen_ident_map_ISA() but on many systems this was omitting a few pages as many systems marked a few pages below the ISA memory region as reserved in the e820 map. This fixes errors such as: (XEN) page_alloc.c:1148:d0 Over-allocation for domain 0: 2097153 > 2097152 (XEN) memory.c:133:d0 Could not allocate order=0 extent: id=0 memflags=0 (0 of 17) Signed-off-by: David Vrabel <david.vrabel@citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Diffstat (limited to 'arch/x86/xen/enlighten.c')
-rw-r--r--arch/x86/xen/enlighten.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index fe06bf4ef0e3..ac90e5629508 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -1308,7 +1308,6 @@ asmlinkage void __init xen_start_kernel(void)
xen_raw_console_write("mapping kernel into physical memory\n");
pgd = xen_setup_kernel_pagetable(pgd, xen_start_info->nr_pages);
- xen_ident_map_ISA();
/* Allocate and initialize top and mid mfn levels for p2m structure */
xen_build_mfn_list_list();