powerpc/tm: Turn interrupts hard off in tm_reclaim()

commit c69e63b0f135fa51d6e1c38b5ac8a1def15ea3fa upstream.

We can't take IRQs in tm_reclaim as we might have a bogus r13 and r1.

This turns IRQs hard off in this function.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/arch/powerpc/kernel/tm.S b/arch/powerpc/kernel/tm.S
index 875282f17f34de9c856be476bf364b594f42758c..e3f8da3c00b9acd3a54eb9e8bdf2a3de23f10c0f 100644 (file)
--- a/arch/powerpc/kernel/tm.S
+++ b/arch/powerpc/kernel/tm.S
@@ -128,6 +128,7 @@ _GLOBAL(tm_reclaim)
        mr      r15, r14
        ori     r15, r15, MSR_FP
        li      r16, MSR_RI
+       ori     r16, r16, MSR_EE /* IRQs hard off */
        andc    r15, r15, r16
        oris    r15, r15, MSR_VEC@h
 #ifdef CONFIG_VSX