X-Git-Url: https://git.kernelconcepts.de/?a=blobdiff_plain;f=arch%2Fpowerpc%2Fkernel%2Fmisc_64.S;h=8ac0bd2bddb0c93b95dccfd61807807219913b5e;hb=d8e2a4053574002135fbb032c2e74f1d1dbb2103;hp=c119044cad0d58e94bb0d4a7557ed27da8f7a390;hpb=c316cf670491def52a396d3bdc5a63ad01f7fefa;p=karo-tx-linux.git

diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index c119044cad0d..8ac0bd2bddb0 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -614,6 +614,18 @@ _GLOBAL(kexec_sequence)
 	li	r0,0
 	std	r0,16(r1)
 
+BEGIN_FTR_SECTION
+	/*
+	 * This is the best time to turn AMR/IAMR off.
+	 * key 0 is used in radix for supervisor<->user
+	 * protection, but on hash key 0 is reserved
+	 * ideally we want to enter with a clean state.
+	 * NOTE, we rely on r0 being 0 from above.
+	 */
+	mtspr	SPRN_IAMR,r0
+	mtspr	SPRN_AMOR,r0
+END_FTR_SECTION_IFSET(CPU_FTR_ARCH_300)
+
 	/* save regs for local vars on new stack.
 	 * yes, we won't go back, but ...
 	 */