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Re: [PATCH v3] powerpc: Add an inline function to update POWER8 HID0

From Sam Bobroff <sam.bobroff@au1.ibm.com>
Newsgroups linux.kernel
Subject Re: [PATCH v3] powerpc: Add an inline function to update POWER8 HID0
Date 2015-08-14 07:00 +0200
Message-ID <pXffX-79-1@gated-at.bofh.it> (permalink)
References <pU0Q9-22l-9@gated-at.bofh.it> <pU0ZQ-2sZ-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, Aug 05, 2015 at 12:38:31PM +0530, Gautham R. Shenoy wrote:
> Section 3.7 of Version 1.2 of the Power8 Processor User's Manual
> prescribes that updates to HID0 be preceded by a SYNC instruction and
> followed by an ISYNC instruction (Page 91).
> 
> Create an inline function name update_power8_hid0() which follows this
> recipe and invoke it from the static split core path.
> 
> Signed-off-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>

Hi Gautham,

I've tested this on a Power 8 machine and verified that it is able to change
split modes and that when doing so the new code is used.

Reviewed-by: Sam Bobroff <sam.bobroff@au1.ibm.com>
Tested-by: Sam Bobroff <sam.bobroff@au1.ibm.com>

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Thread

Re: powerpc: Add an inline function to update HID0 Segher Boessenkool <segher@kernel.crashing.org> - 2015-08-05 04:40 +0200
  Re: powerpc: Add an inline function to update HID0 Gautham R Shenoy <ego@linux.vnet.ibm.com> - 2015-08-05 09:00 +0200
    [PATCH v3] powerpc: Add an inline function to update POWER8 HID0 "Gautham R. Shenoy" <ego@linux.vnet.ibm.com> - 2015-08-05 09:10 +0200
      Re: [PATCH v3] powerpc: Add an inline function to update POWER8 HID0 Sam Bobroff <sam.bobroff@au1.ibm.com> - 2015-08-14 07:00 +0200
      Re: [PATCH v3] powerpc: Add an inline function to update POWER8 HID0 Shreyas B Prabhu <shreyas@linux.vnet.ibm.com> - 2015-08-14 11:10 +0200
      Re: [v3] powerpc: Add an inline function to update POWER8 HID0 Michael Ellerman <mpe@ellerman.id.au> - 2015-08-17 10:10 +0200

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