linux-kernel - Re: Linux on Hyper-V 1) cd006086fa5d ata_piix: defer disks to the Hyper-V drivers by default 2) db63a4c8115a libata: add a host flag to ignore detected ATA device FW: use hv_storvsc instead of ata_piix to handle the IDE disks devices ( but not for the ...

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Message-ID: <E9DA0754731C42D4981E807AB209929A@local.st.by>
Date:	Mon, 4 Jun 2012 18:57:31 +0300
From:	"Victor Miasnikov" <vvm@....by>
To:	"KY Srinivasan" <kys@...rosoft.com>,
	"Greg KH" <gregkh@...uxfoundation.org>
Cc:	<stable@...r.kernel.org>, "Jonathan Nieder" <jrnieder@...il.com>,
	<linux-kernel@...r.kernel.org>,
	"Mike Sterling" <mike.sterling@...rosoft.com>
Subject: Re: Linux on Hyper-V 1) cd006086fa5d ata_piix: defer disks to the Hyper-V drivers by default 2) db63a4c8115a libata: add a host flag to ignore detected ATA device FW: use hv_storvsc instead of ata_piix to handle the IDE disks devices ( but not for the ...

Hi!

>> > VVM > > > Hyper-V admins need _worked_ Linux v3.4.X / v3.3.X / v3.2.X
>> >I can help you with the ata patch on specific set of distros of interest.
>> >If the system that you are interested loads the ata_piix module,
>> >we can solve the issue on hand using modprobe rules rather than a patch
>> against the ata driver.
>> 
>>  K.Y.:  Youre _theory_ ( about "can solve the issue on hand using modprobe
>> rules") is wrong for:
 
> As I said,  if the ata_piix driver is a loadable module, 
> we can solve the issue with modprobe rules. 
> If it is not a loadable module we cannot obviously 
> solve the problem with modprobe rules
> and we will need the ata patch.

 Nothing new: 
   -- "the ata patch" is need, if we want worked 100% / 100% Linux on Hyper-V
   -- "solve the problem with modprobe rules" very often not worked solution (  i.e. if the ata_piix driver  . . . )

Total: 

{
  cd006086fa5d ata_piix: defer disks to the Hyper-V drivers by default

and its prerequisite

  db63a4c8115a libata: add a host flag to ignore detected ATA devices
}
 need be backported from

3.5 

 to

3.4.latest
3.3.latest
3.2.latest



Best regards, Victor Miasnikov
Blog:  http://vvm.blog.tut.by/ 

P.S.

> As I said,  if the ata_piix driver is a loadable module, 
> we can solve the issue with modprobe rules. 

We can test Youre theory:

----- Original Message ----- 
From: "Victor Miasnikov"
To: "KY Srinivasan"
Sent: Monday, June 04, 2012 6:50 PM

  . . .

with use only  "modprobe rules" prepare binary patch ( .xDelta)  for <Linux_Distib_ZZZZ_Kernel_3.2_>

   . . .

 Goal: work in Hyper-V guest as ( ( Linux_Distib_ZZZZ_Kernel_3.1_.iso ) + worked mouse ) ) in LiveCD and after install

--


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