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From: "Zhao Forrest" <forrest.zhao@gmail.com>
To: linux-kernel@vger.kernel.org
Cc: kvm-devel@lists.sourceforge.net
Subject: Can Linux kernel handle unsynced TSC?
Date: Fri, 29 Feb 2008 16:55:05 +0800	[thread overview]
Message-ID: <ac8af0be0802290055m5ca1aa84yad6e38f6935f847@mail.gmail.com> (raw)

Sorry for reposting it.

For example,
1 rdtsc() is invoked on CPU0
2 process is migrated to CPU1, and rdtsc() is invoked on CPU1
3 if TSC on CPU1 is slower than TSC on CPU0, can kernel guarantee
that the second rdtsc() doesn't return a value smaller than the one
returned by the first rdtsc()?

Thanks,
Forrest

             reply	other threads:[~2008-02-29  8:55 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-29  8:55 Zhao Forrest [this message]
2008-02-29 10:43 ` Peter Zijlstra
2008-02-29 14:20   ` Zhao Forrest
2008-02-29 14:27     ` Peter Zijlstra

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