From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: linuxppc-dev@lists.ozlabs.org, paulus@samba.org
Subject: Re: [PATCH] powerpc: thp: Add write barrier after updating the valid bit
Date: Tue, 29 Jul 2014 17:00:44 +1000 [thread overview]
Message-ID: <1406617244.4935.81.camel@pasglop> (raw)
In-Reply-To: <8761igu008.fsf@linux.vnet.ibm.com>
On Tue, 2014-07-29 at 12:25 +0530, Aneesh Kumar K.V wrote:
> We want to make sure for usage like below we don't reorder the load.
>
> if (pmd_trans_huge(*pmdp)){
>
> get_hpte_slot_array(pmdp)
> }
Shouldn't we also make sure that we don't have lock set ? (In case it's
in the middle of being updated).
Cheers,
Ben.
next prev parent reply other threads:[~2014-07-29 7:00 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-15 14:52 [PATCH] powerpc: thp: Add write barrier after updating the valid bit Aneesh Kumar K.V
2014-07-22 5:27 ` Benjamin Herrenschmidt
2014-07-22 18:53 ` Aneesh Kumar K.V
2014-07-22 21:55 ` Benjamin Herrenschmidt
2014-07-29 6:55 ` Aneesh Kumar K.V
2014-07-29 7:00 ` Benjamin Herrenschmidt [this message]
2014-07-29 10:37 ` Aneesh Kumar K.V
-- strict thread matches above, loose matches on Subject: below --
2014-07-15 14:51 Aneesh Kumar K.V
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