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From: Leonardo Bras <leonardo@linux.ibm.com>
To: jhubbard@nvidia.com, linuxppc-dev@lists.ozlabs.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Cc: dan.j.williams@intel.com, arnd@arndb.de, jgg@ziepe.ca,
	gregkh@linuxfoundation.org, mahesh@linux.vnet.ibm.com,
	yuehaibing@huawei.com, npiggin@gmail.com, rppt@linux.ibm.com,
	keith.busch@intel.com, rfontana@redhat.com, paulus@samba.org,
	aneesh.kumar@linux.ibm.com, ganeshgr@linux.ibm.com,
	tglx@linutronix.de, ira.weiny@intel.com,
	akpm@linux-foundation.org, allison@lohutok.net
Subject: Re: [PATCH v2 11/11] powerpc/mm/book3s64/pgtable: Uses counting method to skip serializing
Date: Tue, 24 Sep 2019 18:23:18 -0300	[thread overview]
Message-ID: <3dc42edc28b11e4d5db385a54fb42504200419e5.camel@linux.ibm.com> (raw)

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John Hubbard <jhubbard@nvidia.com> writes:

>> Is that what you meant?
>
> Yes.
>

I am still trying to understand this issue.

I am also analyzing some cases where interrupt disable is not done
before the lockless pagetable walk (patch 3 discussion).

But given I forgot to add the mm mailing list before, I think it would
be wiser to send a v3 and gather feedback while I keep trying to
understand how it works, and if it needs additional memory barrier here.

Thanks!

Leonardo Bras


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             reply	other threads:[~2019-09-24 21:23 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-24 21:23 Leonardo Bras [this message]
     [not found] <20190920195047.7703-1-leonardo@linux.ibm.com>
     [not found] ` <20190920195047.7703-12-leonardo@linux.ibm.com>
     [not found]   ` <1b39eaa7-751d-40bc-d3d7-41aaa15be42a@nvidia.com>
     [not found]     ` <24863d8904c6e05e5dd48cab57db4274675ae654.camel@linux.ibm.com>
2019-09-21  0:48       ` John Hubbard
2019-09-23 17:25         ` Leonardo Bras
2019-09-23 18:14           ` John Hubbard
2019-09-23 19:40             ` Leonardo Bras
2019-09-23 19:58               ` John Hubbard
2019-09-23 20:23                 ` Leonardo Bras
2019-09-23 20:26                   ` John Hubbard

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