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From: Nathan Whitehorn <nwhitehorn@FreeBSD.org>
Date: Sun, 17 Sep 2017 19:53:52 +0000 (UTC)
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Subject: svn commit: r323685 - projects/powernv/powerpc/powerpc
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Author: nwhitehorn
Date: Sun Sep 17 19:53:52 2017
New Revision: 323685
URL: https://svnweb.freebsd.org/changeset/base/323685

Log:
  Make sure to record the BSP's hwref. This previously worked by accident since
  the BSP hwref was always zero, but that isn't necessarily true with PowerNV.
  This prevents a QEMU segfault on recent QEMU versions and, I'm sure, some
  fascinating problems on hardware.

Modified:
  projects/powernv/powerpc/powerpc/machdep.c

Modified: projects/powernv/powerpc/powerpc/machdep.c
==============================================================================
--- projects/powernv/powerpc/powerpc/machdep.c	Sun Sep 17 19:40:17 2017	(r323684)
+++ projects/powernv/powerpc/powerpc/machdep.c	Sun Sep 17 19:53:52 2017	(r323685)
@@ -376,6 +376,7 @@ powerpc_init(vm_offset_t fdt, vm_offset_t toc, vm_offs
 	pc->pc_curthread = &thread0;
 	thread0.td_oncpu = bsp.cr_cpuid;
 	pc->pc_cpuid = bsp.cr_cpuid;
+	pc->pc_hwref = bsp.cr_hwref;
 	pc->pc_pir = mfspr(SPR_PIR);
 	__asm __volatile("mtsprg 0, %0" :: "r"(pc));