From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: kvm@vger.kernel.org, Gleb Natapov <gleb@kernel.org>,
Alexander Graf <agraf@suse.de>,
kvm-ppc@vger.kernel.org, linux-kernel@vger.kernel.org,
Paul Mackerras <paulus@samba.org>,
Paolo Bonzini <pbonzini@redhat.com>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 3/3] PPC: KVM: Add support for 64bit TCE windows
Date: Thu, 05 Jun 2014 20:27:17 +1000 [thread overview]
Message-ID: <1401964037.3247.129.camel@pasglop> (raw)
In-Reply-To: <539037DB.5080706@ozlabs.ru>
On Thu, 2014-06-05 at 19:26 +1000, Alexey Kardashevskiy wrote:
>
> No trees yet. For 64GB window we need (64<<30)/(16<<20)*8 = 32K TCE table.
> Do we really need trees?
The above is assuming hugetlbfs backed guests. These are the least of my worry
indeed. But we need to deal with 4k and 64k guests.
Cheers,
Ben
next prev parent reply other threads:[~2014-06-05 10:27 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-05 7:25 [PATCH 0/3] Prepare for in-kernel VFIO DMA operations acceleration Alexey Kardashevskiy
2014-06-05 7:25 ` [PATCH 1/3] PPC: KVM: Reserve KVM_CAP_SPAPR_TCE_VFIO capability number Alexey Kardashevskiy
2014-06-05 7:25 ` [PATCH 2/3] PPC: KVM: Reserve KVM_CAP_SPAPR_TCE_64 " Alexey Kardashevskiy
2014-06-05 7:25 ` [PATCH 3/3] PPC: KVM: Add support for 64bit TCE windows Alexey Kardashevskiy
2014-06-05 7:38 ` Benjamin Herrenschmidt
2014-06-05 9:26 ` Alexey Kardashevskiy
2014-06-05 10:27 ` Benjamin Herrenschmidt [this message]
2014-06-05 11:56 ` Alexander Graf
2014-06-05 12:30 ` Benjamin Herrenschmidt
2014-06-05 12:32 ` Alexander Graf
2014-06-05 13:04 ` Alexey Kardashevskiy
2014-06-05 11:57 ` [PATCH 0/3] Prepare for in-kernel VFIO DMA operations acceleration Alexander Graf
2014-06-06 0:20 ` Alexey Kardashevskiy
2014-06-25 21:12 ` Alexander Graf
2014-06-25 23:59 ` Alexey Kardashevskiy
2014-06-26 10:37 ` Alexander Graf
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