From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>,
Anthony Liguori <aliguori@us.ibm.com>,
"Michael S . Tsirkin" <mst@redhat.com>,
qemu-devel@nongnu.org, David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [Qemu-devel] [PATCH v2] pci: Introduce helper to retrieve a PCI device's DMA address space
Date: Fri, 09 Aug 2013 20:20:59 +1000 [thread overview]
Message-ID: <1376043659.32100.37.camel@pasglop> (raw)
In-Reply-To: <5204B8F9.5050201@redhat.com>
On Fri, 2013-08-09 at 11:40 +0200, Paolo Bonzini wrote:
> (BTW, do you need to enable bus-master DMA on PCI bridges, to do DMA
> for devices sitting on the secondary bus?)
In theory yes though I have seen bridges who ignore it...
Cheers,
Ben.
next prev parent reply other threads:[~2013-08-09 10:21 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-09 8:49 [Qemu-devel] [PATCH v2] pci: Introduce helper to retrieve a PCI device's DMA address space Alexey Kardashevskiy
2013-08-09 9:40 ` Paolo Bonzini
2013-08-09 9:48 ` Alexey Kardashevskiy
2013-08-09 9:53 ` Paolo Bonzini
2013-08-09 10:13 ` Alexey Kardashevskiy
2013-08-09 10:19 ` Paolo Bonzini
2013-08-09 10:58 ` Alexey Kardashevskiy
2013-08-09 11:07 ` Paolo Bonzini
2013-08-09 11:21 ` Alexey Kardashevskiy
2013-08-09 11:30 ` Paolo Bonzini
2013-08-09 10:44 ` David Gibson
2013-08-09 10:20 ` Benjamin Herrenschmidt [this message]
2013-08-09 10:29 ` Paolo Bonzini
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