From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Michael Ellerman <mpe@ellerman.id.au>,
Frederic Barrat <fbarrat@linux.vnet.ibm.com>,
linuxppc-dev@lists.ozlabs.org, andrew.donnellan@au1.ibm.com,
clombard@linux.vnet.ibm.com, vaibhav@linux.vnet.ibm.com
Cc: alistair@popple.id.au
Subject: Re: [PATCH v2 1/3] powerpc/mm: Export flush_all_mm()
Date: Thu, 31 Aug 2017 07:00:17 +1000 [thread overview]
Message-ID: <1504126817.4974.22.camel@kernel.crashing.org> (raw)
In-Reply-To: <87inh519fl.fsf@concordia.ellerman.id.au>
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 the whole LPID.
Cheers,
Ben.
prev parent reply other threads:[~2017-08-30 21:00 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-08-30 10:15 [PATCH v2 1/3] powerpc/mm: Export flush_all_mm() Frederic Barrat
2017-08-30 10:15 ` [PATCH v2 2/3] cxl: Fix driver use count Frederic Barrat
2017-08-30 13:18 ` Michael Ellerman
2017-08-31 11:36 ` [v2,2/3] " Michael Ellerman
2017-08-30 10:15 ` [PATCH v2 3/3] cxl: Enable global TLBIs for cxl contexts Frederic Barrat
2017-08-30 13:17 ` [PATCH v2 1/3] powerpc/mm: Export flush_all_mm() Michael Ellerman
2017-08-30 13:59 ` Frederic Barrat
2017-08-30 21:01 ` Benjamin Herrenschmidt
2017-08-31 9:13 ` Frederic Barrat
2017-08-30 21:00 ` Benjamin Herrenschmidt [this message]
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