From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Vlastimil Babka <vbabka@suse.cz>,
Alexey Kardashevskiy <aik@ozlabs.ru>,
linux-mm@kvack.org
Cc: Alexander Duyck <alexander.h.duyck@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
David Gibson <david@gibson.dropbear.id.au>,
Johannes Weiner <hannes@cmpxchg.org>,
Joonsoo Kim <js1304@gmail.com>, Mel Gorman <mgorman@suse.de>,
Michal Hocko <mhocko@suse.cz>, Paul Mackerras <paulus@samba.org>,
Sasha Levin <sasha.levin@oracle.com>,
linux-kernel@vger.kernel.org,
Alex Williamson <alex.williamson@redhat.com>,
Alexander Graf <agraf@suse.de>,
Paolo Bonzini <pbonzini@redhat.com>,
"Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: [RFC PATCH kernel vfio] mm: vfio: Move pages out of CMA before pinning
Date: Mon, 17 Aug 2015 19:58:19 +1000 [thread overview]
Message-ID: <1439805499.2416.14.camel@kernel.crashing.org> (raw)
In-Reply-To: <55D1AF06.5090703@suse.cz>
On Mon, 2015-08-17 at 11:53 +0200, Vlastimil Babka wrote:
> I meant why the kernel used for QEMU has also CMA enabled and used
> (for
> something else)? CMA is mostly used on mobile devices and they don't
> run
> QEMU?
I explained in a separeate reply but yes, we do use a CMA for KVM for
our MMU hash tables.
Cheers,
Ben.
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WARNING: multiple messages have this Message-ID (diff)
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Vlastimil Babka <vbabka@suse.cz>,
Alexey Kardashevskiy <aik@ozlabs.ru>,
linux-mm@kvack.org
Cc: Alexander Duyck <alexander.h.duyck@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
David Gibson <david@gibson.dropbear.id.au>,
Johannes Weiner <hannes@cmpxchg.org>,
Joonsoo Kim <js1304@gmail.com>, Mel Gorman <mgorman@suse.de>,
Michal Hocko <mhocko@suse.cz>, Paul Mackerras <paulus@samba.org>,
Sasha Levin <sasha.levin@oracle.com>,
linux-kernel@vger.kernel.org,
Alex Williamson <alex.williamson@redhat.com>,
Alexander Graf <agraf@suse.de>,
Paolo Bonzini <pbonzini@redhat.com>,
"Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com>,
Peter Zijlstra <peterz@infradead.org>
Subject: Re: [RFC PATCH kernel vfio] mm: vfio: Move pages out of CMA before pinning
Date: Mon, 17 Aug 2015 19:58:19 +1000 [thread overview]
Message-ID: <1439805499.2416.14.camel@kernel.crashing.org> (raw)
In-Reply-To: <55D1AF06.5090703@suse.cz>
On Mon, 2015-08-17 at 11:53 +0200, Vlastimil Babka wrote:
> I meant why the kernel used for QEMU has also CMA enabled and used
> (for
> something else)? CMA is mostly used on mobile devices and they don't
> run
> QEMU?
I explained in a separeate reply but yes, we do use a CMA for KVM for
our MMU hash tables.
Cheers,
Ben.
next prev parent reply other threads:[~2015-08-17 10:20 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-05 8:08 [RFC PATCH kernel vfio] mm: vfio: Move pages out of CMA before pinning Alexey Kardashevskiy
2015-08-05 8:08 ` Alexey Kardashevskiy
2015-08-15 10:50 ` Alexey Kardashevskiy
2015-08-15 10:50 ` Alexey Kardashevskiy
2015-08-17 7:45 ` Vlastimil Babka
2015-08-17 7:45 ` Vlastimil Babka
2015-08-17 9:11 ` Alexey Kardashevskiy
2015-08-17 9:11 ` Alexey Kardashevskiy
2015-08-17 9:53 ` Vlastimil Babka
2015-08-17 9:53 ` Vlastimil Babka
2015-08-17 9:58 ` Benjamin Herrenschmidt [this message]
2015-08-17 9:58 ` Benjamin Herrenschmidt
2015-08-17 9:57 ` Benjamin Herrenschmidt
2015-08-17 9:57 ` Benjamin Herrenschmidt
2015-08-31 13:48 ` Peter Zijlstra
2015-08-31 13:48 ` Peter Zijlstra
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