x86: fix ioremap pgprot inconsistency
The pgprot flags which are handed into ioremap_page_range() are
different to those which are set in change_page_attr(). The
ioremap_page_range flags are executable, while the c_p_a flags are
not. Also make the mappings global (which is a NOP currently on 32bit,
although CPUs from PPRO+ onwards support it, but that's a separate
fix.)
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/mm/ioremap_32.c b/arch/x86/mm/ioremap_32.c
index f8e6c47..18757f0 100644
--- a/arch/x86/mm/ioremap_32.c
+++ b/arch/x86/mm/ioremap_32.c
@@ -67,8 +67,7 @@
return NULL;
}
- prot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY
- | _PAGE_ACCESSED | flags);
+ prot = MAKE_GLOBAL(__PAGE_KERNEL | flags);
/*
* Mappings have to be page-aligned