[1/2] powerpc/mm: Add tracking of the number of coprocessors using a context

Michael Ellerman patch-notifications at ellerman.id.au
Fri Mar 23 22:11:13 AEDT 2018

On Thu, 2018-03-22 at 22:29:05 UTC, Balbir Singh wrote:
> From: Benjamin Herrenschmidt <benh at 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 at kernel.crashing.org>
> Tested-by: Balbir Singh <bsingharora at gmail.com>

Series applied to powerpc fixes, thanks.



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