Commit 585583d9 authored Jul 14, 2008 by Kumar Gala Committed by Benjamin Herrenschmidt Jul 15, 2008

powerpc: Fix pte_update for CONFIG_PTE_64BIT and !PTE_ATOMIC_UPDATES

Because the pte is now 64-bits the compiler was optimizing the update
to always clear the upper 32-bits of the pte. We need to ensure the
clr mask is treated as an unsigned long long to get the proper behavior.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Acked-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

parent 7ff86b03

include/asm-powerpc/pgtable-ppc32.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -624,7 +624,7 @@ static inline unsigned long long pte_update(pte_t *p,
		: "cc" );
		#else /* PTE_ATOMIC_UPDATES */
		unsigned long long old = pte_val(*p);
		*p = __pte((old & ~clr) \| set);
		*p = __pte((old & ~(unsigned long long)clr) \| set);
		#endif /* !PTE_ATOMIC_UPDATES */

		#ifdef CONFIG_44x