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[src/trunk]: src/sys/arch/x86/x86 Disable errata #1091. We are the only OS to...
details: https://anonhg.NetBSD.org/src/rev/255df2d6ca27
branches: trunk
changeset: 451362:255df2d6ca27
user: maxv <maxv%NetBSD.org@localhost>
date: Sat May 18 07:49:31 2019 +0000
description:
Disable errata #1091. We are the only OS to apply it, and it seems to be
causing trouble to VirtualBox (PR/54143).
diffstat:
sys/arch/x86/x86/errata.c | 6 ++++--
1 files changed, 4 insertions(+), 2 deletions(-)
diffs (34 lines):
diff -r beedd8d3c257 -r 255df2d6ca27 sys/arch/x86/x86/errata.c
--- a/sys/arch/x86/x86/errata.c Sat May 18 07:33:10 2019 +0000
+++ b/sys/arch/x86/x86/errata.c Sat May 18 07:49:31 2019 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: errata.c,v 1.25 2018/08/12 05:43:42 maxv Exp $ */
+/* $NetBSD: errata.c,v 1.26 2019/05/18 07:49:31 maxv Exp $ */
/*-
* Copyright (c) 2007 The NetBSD Foundation, Inc.
@@ -45,7 +45,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: errata.c,v 1.25 2018/08/12 05:43:42 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: errata.c,v 1.26 2019/05/18 07:49:31 maxv Exp $");
#include <sys/types.h>
#include <sys/systm.h>
@@ -341,6 +341,7 @@
1049, FALSE, MSR_FP_CFG, x86_errata_set13,
x86_errata_setmsr, FP_CFG_ERRATA_1049
},
+#if 0 /* Should we apply this errata? The other OSes don't. */
/*
* 1091: Address Boundary Crossing Load Operation May Receive
* Stale Data
@@ -349,6 +350,7 @@
1091, FALSE, MSR_LS_CFG2, x86_errata_set13,
x86_errata_setmsr, LS_CFG2_ERRATA_1091
},
+#endif
/*
* 1095: Potential Violation of Read Ordering In Lock Operation
* In SMT (Simultaneous Multithreading) Mode
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