The constraints of the rrbm inline assembly are missing two earlyclobber operands, which can lead to an addressing exception depending on compiler register allocation decisions.
Signed-off-by: Gerald Schaefer <[email protected]> --- Hello Andrew, please merge this with patch thp-s390-architecture-backend-for-thp-on-s390.patch arch/s390/include/asm/pgtable.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h index 1393a3c..ce67458 100644 --- a/arch/s390/include/asm/pgtable.h +++ b/arch/s390/include/asm/pgtable.h @@ -1296,7 +1296,8 @@ static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma, " ogr %1,%0\n" " la %3,0(%4,%3)\n" " brct %2,0b\n" - : "=d" (tmp), "+d" (rc), "+d" (counter), "+a" (pmd_addr) + : "=&d" (tmp), "+&d" (rc), "+d" (counter), + "+a" (pmd_addr) : "a" (64 * 4096UL) : "cc"); rc = !!rc; } else { -- 1.7.11.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
