parisc: provide macro to create exception table entries

[platform/adaptation/renesas_rcar/renesas_kernel.git] / arch / parisc / mm / fault.c

diff --git a/arch/parisc/mm/fault.c b/arch/parisc/mm/fault.c
index 0293588..df0d329 100644 (file)
--- a/arch/parisc/mm/fault.c
+++ b/arch/parisc/mm/fault.c
@@ -142,6 +142,12 @@ int fixup_exception(struct pt_regs *regs)
 {
        const struct exception_table_entry *fix;
 
+       /* If we only stored 32bit addresses in the exception table we can drop
+        * out if we faulted on a 64bit address. */
+       if ((sizeof(regs->iaoq[0]) > sizeof(fix->insn))
+               && (regs->iaoq[0] >> 32))
+                       return 0;
+
        fix = search_exception_tables(regs->iaoq[0]);
        if (fix) {
                struct exception_data *d;