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To: Balbir Singh <bsingharora@gmail.com>, linuxppc-dev@lists.ozlabs.org
From: Michael Ellerman <patch-notifications@ellerman.id.au>
Cc: aneesh.kumar@linux.vnet.ibm.com, npiggin@gmail.com
Subject: Re: [1/2] powerpc/mm: Add tracking of the number of coprocessors
 using a context
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Date: Fri, 23 Mar 2018 22:11:13 +1100 (AEDT)
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On Thu, 2018-03-22 at 22:29:05 UTC, Balbir Singh wrote:
> From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> 
> Currently, when using coprocessors (which use the Nest MMU), we
> simply increment the active_cpu count to force all TLB invalidations
> to be come broadcast.
> 
> Unfortunately, due to an errata in POWER9, we will need to know
> more specifically that coprocessors are in use.
> 
> This maintains a separate copros counter in the MMU context for
> that purpose.
> 
> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> Tested-by: Balbir Singh <bsingharora@gmail.com>

Series applied to powerpc fixes, thanks.

https://git.kernel.org/powerpc/c/aff6f8cb3e2170b9e58b0932bce7bf

cheers