Le 30/08/2017 à 23:01, Benjamin Herrenschmidt a écrit :
On Wed, 2017-08-30 at 15:59 +0200, Frederic Barrat wrote:
It's not clear why it makes sense for these to be empty. Either for the
general idea of the "flush_all_mm()" API, or for your intended use by
CXL.
I was not too sure what to do f
On Wed, 2017-08-30 at 15:59 +0200, Frederic Barrat wrote:
> > It's not clear why it makes sense for these to be empty. Either for the
> > general idea of the "flush_all_mm()" API, or for your intended use by
> > CXL.
>
> I was not too sure what to do for hash, but the idea is that the new
> flush
On Wed, 2017-08-30 at 23:17 +1000, Michael Ellerman wrote:
> It's not clear why it makes sense for these to be empty. Either for the
> general idea of the "flush_all_mm()" API, or for your intended use by
> CXL.
Indeed. On hash we don't have a way to flush a PID out of the TLB,
but you can flush t
Le 30/08/2017 à 15:17, Michael Ellerman a écrit :
Frederic Barrat writes:
With the optimizations introduced by commit a46cc7a90fd8
("powerpc/mm/radix: Improve TLB/PWC flushes"), flush_tlb_mm() no
longer flushes the page walk cache with radix. This patch introduces
flush_all_mm(), which flush
Frederic Barrat writes:
> With the optimizations introduced by commit a46cc7a90fd8
> ("powerpc/mm/radix: Improve TLB/PWC flushes"), flush_tlb_mm() no
> longer flushes the page walk cache with radix. This patch introduces
> flush_all_mm(), which flushes everything, tlb and pwc, for a given mm.
>
>
With the optimizations introduced by commit a46cc7a90fd8
("powerpc/mm/radix: Improve TLB/PWC flushes"), flush_tlb_mm() no
longer flushes the page walk cache with radix. This patch introduces
flush_all_mm(), which flushes everything, tlb and pwc, for a given mm.
Signed-off-by: Frederic Barrat
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