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[src/trunk]: src/sys/arch/xen/x86 Change xpq_flush_cache to just do WBINVD le...
details: https://anonhg.NetBSD.org/src/rev/6332c61a7d50
branches: trunk
changeset: 791245:6332c61a7d50
user: jnemeth <jnemeth%NetBSD.org@localhost>
date: Sun Nov 10 01:19:13 2013 +0000
description:
Change xpq_flush_cache to just do WBINVD letting the hypervisor trap and
handle it as MMUEXT_FLUSH_CACHE is a privileged hypervisor operation.
diffstat:
sys/arch/xen/x86/x86_xpmap.c | 12 ++++--------
1 files changed, 4 insertions(+), 8 deletions(-)
diffs (37 lines):
diff -r fbdd99e47452 -r 6332c61a7d50 sys/arch/xen/x86/x86_xpmap.c
--- a/sys/arch/xen/x86/x86_xpmap.c Sun Nov 10 00:50:13 2013 +0000
+++ b/sys/arch/xen/x86/x86_xpmap.c Sun Nov 10 01:19:13 2013 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: x86_xpmap.c,v 1.51 2013/11/08 02:23:52 christos Exp $ */
+/* $NetBSD: x86_xpmap.c,v 1.52 2013/11/10 01:19:13 jnemeth Exp $ */
/*
* Copyright (c) 2006 Mathieu Ropert <mro%adviseo.fr@localhost>
@@ -69,7 +69,7 @@
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: x86_xpmap.c,v 1.51 2013/11/08 02:23:52 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: x86_xpmap.c,v 1.52 2013/11/10 01:19:13 jnemeth Exp $");
#include "opt_xen.h"
#include "opt_ddb.h"
@@ -348,16 +348,12 @@
void
xpq_flush_cache(void)
{
- struct mmuext_op op;
- int s = splvm(), err;
+ int s = splvm();
xpq_flush_queue();
XENPRINTK2(("xpq_queue_flush_cache\n"));
- op.cmd = MMUEXT_FLUSH_CACHE;
- if ((err = HYPERVISOR_mmuext_op(&op, 1, NULL, DOMID_SELF)) < 0) {
- panic("xpq_flush_cache, err %d", err);
- }
+ asm("wbinvd":::"memory");
splx(s); /* XXX: removeme */
}
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