From mboxrd@z Thu Jan  1 00:00:00 1970
From: Gerd Knorr <kraxel@suse.de>
Subject: [patch] pae/smp fix
Date: Tue, 9 Aug 2005 12:54:34 +0200
Message-ID: <20050809105434.GB15824@bytesex>
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  Hi,

We'll have to make the pmd's writable on release ...

For the UP case the mm_umpin() in _arch_exit_mmap() is
good enougth, for SMP it isn't ...

  Gerd

--- arch/xen/i386/mm/pgtable.c.smp	2005-08-09 12:48:31.992742653 +0200
+++ arch/xen/i386/mm/pgtable.c	2005-08-09 12:48:50.853202203 +0200
@@ -359,6 +359,7 @@
 	if (PTRS_PER_PMD > 1) {
 		for (i = 0; i < USER_PTRS_PER_PGD; ++i) {
 			pmd_t *pmd = (void *)__va(pgd_val(pgd[i])-1);
+			make_page_writable(pmd);
 			kmem_cache_free(pmd_cache, pmd);
 		}
 		if (!HAVE_SHARED_KERNEL_PMD) {