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[Xen-changelog] [xen-unstable] x86: document tsc_native configuration op

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Subject: [Xen-changelog] [xen-unstable] x86: document tsc_native configuration option in xmexample.hvm.
From: Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>
Date: Fri, 16 Oct 2009 01:10:18 -0700
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# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1255678489 -3600
# Node ID 7396c20cb26c767e587df5da414ae0ff0da89141
# Parent  1ab8978d687ffdcfe99078711c2403265a2499b6
x86: document tsc_native configuration option in xmexample.hvm.

Set the default value to 1

Signed-off-by: Xiantao Zhang <xiantao.zhang@xxxxxxxxx>
---
 tools/examples/xmexample.hvm |    6 ++++++
 1 files changed, 6 insertions(+)

diff -r 1ab8978d687f -r 7396c20cb26c tools/examples/xmexample.hvm
--- a/tools/examples/xmexample.hvm      Fri Oct 16 08:32:34 2009 +0100
+++ b/tools/examples/xmexample.hvm      Fri Oct 16 08:34:49 2009 +0100
@@ -177,6 +177,12 @@ stdvga=0
 #   then xm console or minicom can connect
 serial='pty'
 
+#----------------------------------------------------------------------------
+#   tsc_native : TSC mode (0=emulate TSC, 1=native TSC)
+#   emulate TSC provides synced TSC for all vcpus, but lose perfomrance.
+#   native TSC leverages hardware's TSC(no perf loss), but vcpu's TSC may lose
+#   sync due to hardware's unreliable/unsynced TSC between CPUs.
+tsc_native=1
 
 #-----------------------------------------------------------------------------
 #   Qemu Monitor, default is disable

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