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[Xen-devel] [PATCH] time-xen : Reset monotonic time when sync up time fr

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Subject: [Xen-devel] [PATCH] time-xen : Reset monotonic time when sync up time from dom0 to domU
From: "Du, Hang" <hdu@xxxxxxxxxxxx>
Date: Tue, 12 Oct 2010 03:19:14 -0700
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Cc: "Liu, Saipu" <saliu@xxxxxxxxxxxx>, "Yi, Shunli" <syi@xxxxxxxxxxxx>
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Thread-topic: [Xen-devel] [PATCH] time-xen : Reset monotonic time when sync up time from dom0 to domU

Signed-off-by: Shunli Yi <shyi@xxxxxxxxxxxx>

Signed-off-by: Hang Du <hdu@xxxxxxxxxxxx>


When sync up time from dom0 to domU, the monotonic time should be reset or domU cannot sync up backward time from dom0.


diff –urN a/arch/i386/kernel/time-xen.c   b/arch/i386/kernel/time-xen.c  


--- a/arch/i386/kernel/time-xen.c   2010-10-11 10:41:06.000000000 +0800

+++ b/arch/i386/kernel/time-xen.c   2010-10-11 10:43:32.000000000 +0800

@@ -715,6 +715,8 @@



    if (shadow_tv_version != HYPERVISOR_shared_info->wc_version) {

+        if (!independent_wallclock)

+            monotonic_reset();


        schedule_clock_was_set_work = 1;



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Attachment: time-xen.patch
Description: time-xen.patch

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