[Xen-devel] [patch] pae/smp fix

[Gerd Knorr <kraxel@xxxxxxx>]

  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) {

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