From 3acd1dbcd39388bdac3a05172edc51a97191fe5d Mon Sep 17 00:00:00 2001
From: Olivier Houchard <cognet@FreeBSD.org>
Date: Sun, 27 Oct 2013 22:15:50 +0000
Subject: [PATCH] Make sure the PCB is aligned on 8 bytes, we may use ldrd/strd
 to access it, which may have strong alignment requirements.

---
 sys/arm/include/pcb.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sys/arm/include/pcb.h b/sys/arm/include/pcb.h
index 8a762aa6789..8d98f2efa0e 100644
--- a/sys/arm/include/pcb.h
+++ b/sys/arm/include/pcb.h
@@ -81,7 +81,11 @@ struct pcb {
 	struct	pcb_arm32 un_32;
 	struct vfp_state pcb_vfpstate;          /* VP/NEON state */
 	u_int pcb_vfpcpu;                       /* VP/NEON last cpu */
-};
+} __aligned(8); /* 
+		 * We need the PCB to be aligned on 8 bytes, as we may
+		 * access it using ldrd/strd, and some CPUs require it
+		 * to by aligned on 8 bytes.
+		 */
 
 /*
  * No additional data for core dumps.