Will the name of hyperv_clocksource_tsc_page or hyperv_clocksource pages change?

Alma Eyre (Sonata Software North America) v-aleyre at microsoft.com
Fri Jul 13 00:53:28 UTC 2018


Hello,

Even after asking again, I never did hear from the customer why it matters if the name changes. The case is being closed, and I am assuming that the information you gave (that I passed onto the customer) was sufficient to answer the customer's question.

Thank you Greg, Vitaly, and Peter for helping answer this question.


エアー・アルマ
Professional Direct Delivery Manager
Email: v-aleyre at microsoft.com

Microsoft Azure Professional Direct Services
日本 +81 1-2051-4100(無料)
日本 +81 3-6743-9670(有料)  
電子メール: pdazure at microsoft.com


-----Original Message-----
From: Greg KH <gregkh at linuxfoundation.org> 
Sent: Friday, June 22, 2018 10:51 PM
To: Peter Zijlstra <peterz at infradead.org>
Cc: Alma Eyre (Sonata Software North America) <v-aleyre at microsoft.com>; Haiyang Zhang <haiyangz at microsoft.com>; devel at linuxdriverproject.org; Vitaly Kuznetsov <vkuznets at redhat.com>; Linus Torvalds <torvalds at linux-foundation.org>; Thomas Gleixner <tglx at linutronix.de>
Subject: Re: Will the name of hyperv_clocksource_tsc_page or hyperv_clocksource pages change?

On Fri, Jun 22, 2018 at 10:22:28AM +0200, Peter Zijlstra wrote:
> On Fri, Jun 22, 2018 at 03:17:25AM +0000, Alma Eyre (Sonata Software North America) wrote:
> > Hello,
> > 
> > This is Alma supporting Azure for Japanese customers. I had a 
> > question from a customer that I could not find the answers for. I 
> > saw this
> > github(https://na01.safelinks.protection.outlook.com/?url=https%3A%2
> > F%2Fgithub.com%2Ftorvalds%2Flinux%2Fcommit%2F88c9281a9fba67636ab26c1
> > fd6afbc78a632374f&data=02%7C01%7Cv-aleyre%40microsoft.com%7Cfd2c
> > bcc41da54a65be1908d5d8cd635c%7C72f988bf86f141af91ab2d7cd011db47%7C1%
> > 7C0%7C636653299021462729&sdata=B0KCAukioytYR0RlTPr2n3KVCrKzkRem2
> > ir1aBiXXoA%3D&reserved=0) page, and I was wondering if someone 
> > on this list might be able to answer the question.
> > 
> > Will the name of hyperv_clocksource_tsc_page or hyperv_clocksource 
> > pages change?
> 
> https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithu
> b.com%2Ftorvalds%2Flinux%2Fblob%2Fe7aa8c2eb11ba69b1b69099c3c7bd6be3087
> b0ba%2FDocumentation%2Fprocess%2Fstable-api-nonsense.rst&data=02%7
> C01%7Cv-aleyre%40microsoft.com%7Cfd2cbcc41da54a65be1908d5d8cd635c%7C72
> f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636653299021462729&sdata=
> URuIH1hhfWowC4yfkZxZB8Gg9%2Fo6rEkzufMOUSgjJug%3D&reserved=0

Or better yet, in a pretty html format:
	https://na01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.kernel.org%2Fdoc%2Fhtml%2Flatest%2Fprocess%2Fstable-api-nonsense.html&data=02%7C01%7Cv-aleyre%40microsoft.com%7Cfd2cbcc41da54a65be1908d5d8cd635c%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C636653299021462729&sdata=UBkvgJz9XcURXiTPbV1CImpK9DsnbK9HTgFwZCKjcJU%3D&reserved=0

But, this is a name of a clocksource, not really an internal kernel api.

Alma, what external tool depends on the specific name of a kernel clock?
Why would it matter what the name of it is?

thanks,

greg k-h


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