From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: Michael Neuling <mikey@neuling.org>,
paulus@samba.org, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] powerpc: thp: Use tlbiel wherever possible
Date: Thu, 07 Aug 2014 06:30:40 +1000 [thread overview]
Message-ID: <1407357040.3073.93.camel@pasglop> (raw)
In-Reply-To: <8738d965hf.fsf@linux.vnet.ibm.com>
On Wed, 2014-08-06 at 20:16 +0530, Aneesh Kumar K.V wrote:
> "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com> writes:
>
> > If we know that user address space has never executed on other cpus
> > we could use tlbiel.
> >
> > Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
>
> Now checking against flush_hash_page, I am wondering whether I need to handle
> transcational memory in case of tlbiel ? Michael, can you let me know if
> this is needed ?
Also, beware that we have code that sets "tlbiel" in the page definition
array to 0 on all but 4k and 64k pages...
Cheers,
Ben.
next prev parent reply other threads:[~2014-08-06 20:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-05 6:48 [PATCH] powerpc: thp: Use tlbiel wherever possible Aneesh Kumar K.V
2014-08-06 14:46 ` Aneesh Kumar K.V
2014-08-06 20:30 ` Benjamin Herrenschmidt [this message]
2014-08-07 6:04 ` Aneesh Kumar K.V
2014-08-06 23:12 ` Michael Neuling
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