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From: Boris Ostrovsky <boris.ostrovsky@oracle.com>
To: Thomas Gleixner <tglx@linutronix.de>,
	Pavel Tatashin <pasha.tatashin@oracle.com>
Cc: Steven Sistare <steven.sistare@oracle.com>,
	Daniel Jordan <daniel.m.jordan@oracle.com>,
	linux@armlinux.org.uk,
	Martin Schwidefsky <schwidefsky@de.ibm.com>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	John Stultz <john.stultz@linaro.org>,
	sboyd@codeaurora.org, x86@kernel.org,
	LKML <linux-kernel@vger.kernel.org>,
	mingo@redhat.com, "H. Peter Anvin" <hpa@zytor.com>,
	douly.fnst@cn.fujitsu.com, Peter Zijlstra <peterz@infradead.org>,
	Prarit Bhargava <prarit@redhat.com>,
	feng.tang@intel.com, Petr Mladek <pmladek@suse.com>,
	gnomes@lxorguk.ukuu.org.uk, linux-s390@vger.kernel.org,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Subject: Re: [PATCH v12 09/11] x86/tsc: prepare for early sched_clock
Date: Mon, 9 Jul 2018 19:16:00 -0400	[thread overview]
Message-ID: <e256129f-eed8-bd02-a462-d97db68c5de6@oracle.com> (raw)
In-Reply-To: <alpine.DEB.2.21.1806281159590.1778@nanos.tec.linutronix.de>

On 06/28/2018 06:43 AM, Thomas Gleixner wrote:
>
> For enhanced fun the early calibration stuff was moved from right after
> init_hypervisor_platform() to the place where it is now in commit
> ccb64941f375a6 ("x86/timers: Move simple_udelay_calibration() past
> kvmclock_init()") to speed up KVM boot time by avoiding the PIT
> calibration. I have no idea why it wasn't just moved past the XEN
> initialization a few lines further down, especially as the change was done
> by a XEN maintainer :) Boris?

(Sorry for late response, I was out)


No good reason for that. I don't know what (whether?) I was thinking.

-boris




  parent reply	other threads:[~2018-07-09 23:16 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-06-21 21:25 [PATCH v12 00/11] Early boot time stamps for x86 Pavel Tatashin
2018-06-21 21:25 ` [PATCH v12 01/11] x86: text_poke() may access uninitialized struct pages Pavel Tatashin
2018-06-21 21:37   ` Randy Dunlap
2018-06-25  8:14   ` Peter Zijlstra
2018-06-25  8:39     ` Thomas Gleixner
2018-06-25  9:09       ` Peter Zijlstra
2018-06-25  9:18         ` Thomas Gleixner
2018-06-25  9:22           ` Peter Zijlstra
2018-06-25 12:32             ` Pavel Tatashin
2018-06-25 13:48               ` Peter Zijlstra
2018-06-25 14:06                 ` Pavel Tatashin
2018-06-21 21:25 ` [PATCH v12 02/11] x86: initialize static branching early Pavel Tatashin
2018-06-23  9:16   ` Borislav Petkov
2018-06-23 13:11     ` Pavel Tatashin
2018-06-21 21:25 ` [PATCH v12 03/11] x86/tsc: redefine notsc to behave as tsc=unstable Pavel Tatashin
2018-06-23 13:32   ` Thomas Gleixner
2018-06-21 21:25 ` [PATCH v12 04/11] kvm/x86: remove kvm memblock dependency Pavel Tatashin
2018-06-23 13:36   ` Thomas Gleixner
2018-07-05 16:12   ` Paolo Bonzini
2018-07-06  9:24     ` Thomas Gleixner
2018-07-06  9:36       ` Paolo Bonzini
2018-07-06  9:45         ` Thomas Gleixner
2018-07-06 10:08           ` Paolo Bonzini
2018-07-06 10:44             ` Thomas Gleixner
2018-07-06 10:50               ` Thomas Gleixner
2018-07-06 15:03                 ` Pavel Tatashin
2018-07-06 15:09                   ` Paolo Bonzini
2018-06-21 21:25 ` [PATCH v12 05/11] s390/time: add read_persistent_wall_and_boot_offset() Pavel Tatashin
2018-06-25  7:07   ` Martin Schwidefsky
2018-06-25 12:45     ` Pavel Tatashin
2018-06-21 21:25 ` [PATCH v12 06/11] time: replace read_boot_clock64() with read_persistent_wall_and_boot_offset() Pavel Tatashin
2018-06-23 13:49   ` Thomas Gleixner
2018-06-21 21:25 ` [PATCH v12 07/11] s390/time: remove read_boot_clock64() Pavel Tatashin
2018-06-21 21:25 ` [PATCH v12 08/11] ARM/time: " Pavel Tatashin
2018-06-23 13:52   ` Thomas Gleixner
2018-06-21 21:25 ` [PATCH v12 09/11] x86/tsc: prepare for early sched_clock Pavel Tatashin
2018-06-23 16:50   ` Thomas Gleixner
2018-06-23 18:49     ` Pavel Tatashin
2018-06-23 20:11     ` Thomas Gleixner
2018-06-23 21:29       ` Pavel Tatashin
2018-06-23 23:38         ` Thomas Gleixner
2018-06-24  2:43           ` Pavel Tatashin
2018-06-24  7:30             ` Thomas Gleixner
2018-06-26 15:42           ` Thomas Gleixner
2018-06-26 18:42             ` Pavel Tatashin
2018-06-26 19:47               ` Pavel Tatashin
2018-06-28  7:31               ` Thomas Gleixner
2018-06-28 10:43                 ` Thomas Gleixner
2018-06-28 11:46                   ` Peter Zijlstra
2018-06-28 12:27                     ` Thomas Gleixner
2018-06-28 19:42                   ` Pavel Tatashin
2018-06-29  7:30                     ` Thomas Gleixner
2018-06-29  8:57                       ` Pavel Tatashin
2018-07-03 20:59                         ` Thomas Gleixner
2018-07-02 17:18                       ` Konrad Rzeszutek Wilk
2018-06-29 14:30                   ` Andy Shevchenko
2018-06-29 17:50                     ` Andy Shevchenko
2018-07-09 23:16                   ` Boris Ostrovsky [this message]
2018-06-21 21:25 ` [PATCH v12 10/11] sched: early boot clock Pavel Tatashin
2018-06-25  8:55   ` Peter Zijlstra
2018-06-25 12:44     ` Pavel Tatashin
2018-06-25 19:23     ` Pavel Tatashin
2018-06-26  9:00       ` Peter Zijlstra
2018-06-26 11:27         ` Pavel Tatashin
2018-06-26 11:51           ` Pavel Tatashin
2018-06-26 15:07           ` Peter Zijlstra
2018-06-21 21:25 ` [PATCH v12 11/11] x86/tsc: use tsc early Pavel Tatashin
2018-06-23 16:56   ` Thomas Gleixner
2018-06-23 21:38     ` Pavel Tatashin

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