[Xen-devel] [PATCH] x86/PAE linux: don't restrict upper half of page table entries to 3 bits

["Jan Beulich" <jbeulich@xxxxxxxxxx>]

.. when dumping the page table contents during an oops.

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

Index: head-2006-12-01/arch/i386/mm/fault-xen.c
===================================================================
--- head-2006-12-01.orig/arch/i386/mm/fault-xen.c       2007-01-05 
17:14:18.000000000 +0100
+++ head-2006-12-01/arch/i386/mm/fault-xen.c    2007-01-05 17:17:54.000000000 
+0100
@@ -225,7 +225,7 @@ static void dump_fault_path(unsigned lon
        p += (address >> 30) * 2;
        printk(KERN_ALERT "%08lx -> *pde = %08lx:%08lx\n", page, p[1], p[0]);
        if (p[0] & 1) {
-               mfn  = (p[0] >> PAGE_SHIFT) | ((p[1] & 0x7) << 20); 
+               mfn  = (p[0] >> PAGE_SHIFT) | (p[1] << 20);
                page = mfn_to_pfn(mfn) << PAGE_SHIFT; 
                p  = (unsigned long *)__va(page);
                address &= 0x3fffffff;
@@ -234,7 +234,7 @@ static void dump_fault_path(unsigned lon
                       page, p[1], p[0]);
 #ifndef CONFIG_HIGHPTE
                if (p[0] & 1) {
-                       mfn  = (p[0] >> PAGE_SHIFT) | ((p[1] & 0x7) << 20); 
+                       mfn  = (p[0] >> PAGE_SHIFT) | (p[1] << 20);
                        page = mfn_to_pfn(mfn) << PAGE_SHIFT; 
                        p  = (unsigned long *) __va(page);
                        address &= 0x001fffff;


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