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-rw-r--r--arch/powerpc/mm/pgtable_64.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c
index d95679a..d050fc8 100644
--- a/arch/powerpc/mm/pgtable_64.c
+++ b/arch/powerpc/mm/pgtable_64.c
@@ -265,6 +265,14 @@ void __iomem * ioremap_flags(phys_addr_t addr, unsigned long size,
/* we don't want to let _PAGE_USER and _PAGE_EXEC leak out */
flags &= ~(_PAGE_USER | _PAGE_EXEC);
+#ifdef _PAGE_BAP_SR
+ /* _PAGE_USER contains _PAGE_BAP_SR on BookE using the new PTE format
+ * which means that we just cleared supervisor access... oops ;-) This
+ * restores it
+ */
+ flags |= _PAGE_BAP_SR;
+#endif
+
if (ppc_md.ioremap)
return ppc_md.ioremap(addr, size, flags, caller);
return __ioremap_caller(addr, size, flags, caller);
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