From: Thomas Gleixner <tglx@linutronix.de>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Ingo Molnar <mingo@kernel.org>, "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [GIT pull] x86/timers updates for 4.13
Date: Tue, 4 Jul 2017 09:27:12 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.20.1707040925430.9000@nanos> (raw)
In-Reply-To: <CA+55aFyXwVqZbdgPf4gpA3ArxRpMyqKSxH40td=vUhLNh813fw@mail.gmail.com>
On Mon, 3 Jul 2017, Linus Torvalds wrote:
> On Mon, Jul 3, 2017 at 1:20 AM, Thomas Gleixner <tglx@linutronix.de> wrote:
> >
> > This update contains:
> >
> > - The final solution for the TSC deadline timer borkage, which is caused
> > by a hardware problem in the TSC_ADJUST/TSC_DEADLINE_TIMER logic.
> >
> > The problem is documented now fixed with a microcode update, so we can
> > remove the workaround and check for the microcode version. If the
> > microcode is not up to date, then the TSC deadline timer is
> > enabled. If the borkage is fixed by the proper micro code version,
> > then the deadline timer can be used. In both cases the restrictions to
> > the range of the TSC_ADJUST value, which were added as workarounds,
> > are removed.
> >
> > - A few simple fixes and updates to the timer related x86 code.
>
> That deadline timer explanation made no sense.
Indeed. Sorry.
> I edited it to what I think you wanted to say in the commit message.
Yes. Thank you for fixing it up!
tglx
prev parent reply other threads:[~2017-07-04 7:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-03 8:20 Thomas Gleixner
2017-07-04 1:06 ` Linus Torvalds
2017-07-04 7:27 ` Thomas Gleixner [this message]
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