From: Michael Ellerman <patch-notifications@ellerman.id.au>
To: Christophe Leroy <christophe.leroy@c-s.fr>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] powerpc/32s: Slenderize _tlbia() for powerpc 603/603e
Date: Fri, 6 Mar 2020 11:27:43 +1100 (AEDT) [thread overview]
Message-ID: <48YT3N3R0Nz9sSm@ozlabs.org> (raw)
In-Reply-To: <12f4f4f0ff89aeab3b937fc96c84fb35e1b2517e.1580748445.git.christophe.leroy@c-s.fr>
On Mon, 2020-02-03 at 16:47:37 UTC, Christophe Leroy wrote:
> _tlbia() is a function used only on 603/603e core, ie on CPUs which
> don't have a hash table.
>
> _tlbia() uses the tlbia macro which implements a loop of 1024 tlbie.
>
> On the 603/603e core, flushing the entire TLB requires no more than
> 32 tlbie.
>
> Replace tlbia by a loop of 32 tlbie.
>
> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Applied to powerpc next, thanks.
https://git.kernel.org/powerpc/c/e1347a020b81fe47c80cd277bfaa61295a9482a4
cheers
prev parent reply other threads:[~2020-03-06 0:51 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-03 16:47 [PATCH] powerpc/32s: Slenderize _tlbia() for powerpc 603/603e Christophe Leroy
2020-02-03 16:57 ` Joakim Tjernlund
2020-02-03 17:16 ` Christophe Leroy
2020-03-06 0:27 ` Michael Ellerman [this message]
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