From: Paolo Bonzini <pbonzini@redhat.com>
To: Jan Kiszka <jan.kiszka@siemens.com>,
"Michael S. Tsirkin" <mst@redhat.com>
Cc: "linux-s390@vger.kernel.org" <linux-s390@vger.kernel.org>,
xen-devel <Xen-devel@lists.xen.org>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Andy Lutomirski <luto@amacapital.net>,
Christian Borntraeger <borntraeger@de.ibm.com>,
"linux390@de.ibm.com" <linux390@de.ibm.com>,
Linux Virtualization <virtualization@lists.linux-foundation.org>
Subject: Re: [PATCH v4 0/4] virtio: Clean up scatterlists and use the DMA API
Date: Tue, 28 Jul 2015 18:36:41 +0200 [thread overview]
Message-ID: <55B7AF99.2080209@redhat.com> (raw)
In-Reply-To: <55B77F8C.7010804@siemens.com>
On 28/07/2015 15:11, Jan Kiszka wrote:
>>> >>
>>> >> This doesn't matter much, since the only guests that implement an IOMMU
>>> >> in QEMU are (afaik) PPC and x86, and x86 does not yet promise any kind
>>> >> of stability.
>> >
>> > Hmm I think Jan (cc) said it was already used out there.
> Yes, no known issues with vt-d emulation for almost a year now. Error
> reporting could be improved, and interrupt remapping is still missing,
> but those are minor issues in this context.
On the other hand interrupt remapping is absolutely necessary for
production use, hence my point that x86 does not promise API stability.
("Any kind of stability" actually didn't include crashes; those are not
expected :))
The Google patches for userspace PIC and IOAPIC are proceeding well, so
hopefully we can have interrupt remapping soon.
Paolo
next prev parent reply other threads:[~2015-07-28 16:36 UTC|newest]
Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-28 1:08 [PATCH v4 0/4] virtio: Clean up scatterlists and use the DMA API Andy Lutomirski
2015-07-28 7:05 ` Christian Borntraeger
2015-07-28 8:16 ` Paolo Bonzini
2015-07-28 10:12 ` Benjamin Herrenschmidt
2015-07-28 12:46 ` Paolo Bonzini
2015-07-28 13:06 ` Michael S. Tsirkin
2015-07-28 13:11 ` Jan Kiszka
2015-07-28 16:11 ` Andy Lutomirski
2015-07-28 16:44 ` Jan Kiszka
2015-07-28 17:10 ` Andy Lutomirski
2015-07-28 17:17 ` Jan Kiszka
2015-07-28 18:22 ` Andy Lutomirski
2015-07-28 19:06 ` Jan Kiszka
2015-07-28 19:24 ` Andy Lutomirski
2015-07-28 19:33 ` Jan Kiszka
2015-07-28 21:16 ` Andy Lutomirski
2015-07-28 22:43 ` Andy Lutomirski
2015-07-28 23:21 ` Benjamin Herrenschmidt
2015-07-28 23:33 ` Andy Lutomirski
2015-07-29 0:36 ` Benjamin Herrenschmidt
2015-07-29 0:47 ` Andy Lutomirski
2015-07-29 0:54 ` Benjamin Herrenschmidt
2015-07-29 8:17 ` Paolo Bonzini
2015-07-29 8:20 ` Jan Kiszka
2015-07-29 9:21 ` Benjamin Herrenschmidt
2015-07-29 8:07 ` Jan Kiszka
2015-07-28 16:36 ` Paolo Bonzini [this message]
2015-07-28 16:42 ` Jan Kiszka
2015-07-28 17:15 ` Paolo Bonzini
2015-07-28 17:19 ` Jan Kiszka
2015-07-28 17:31 ` Paolo Bonzini
2015-07-28 13:08 ` Michael S. Tsirkin
-- strict thread matches above, loose matches on Subject: below --
2014-09-01 17:39 Andy Lutomirski
2014-09-01 22:16 ` Benjamin Herrenschmidt
2014-09-02 5:55 ` Andy Lutomirski
2014-09-02 20:53 ` Benjamin Herrenschmidt
2014-09-02 20:56 ` Konrad Rzeszutek Wilk
2014-09-02 21:08 ` Benjamin Herrenschmidt
2014-09-02 21:37 ` Andy Lutomirski
2014-09-02 22:10 ` Benjamin Herrenschmidt
2014-09-02 23:11 ` Andy Lutomirski
2014-09-02 23:20 ` Benjamin Herrenschmidt
2014-09-02 23:42 ` Andy Lutomirski
2014-09-03 0:25 ` Benjamin Herrenschmidt
2014-09-03 0:32 ` Andy Lutomirski
2014-09-03 0:43 ` Benjamin Herrenschmidt
2014-09-04 2:03 ` Andy Lutomirski
2014-09-03 7:47 ` Paolo Bonzini
2014-09-03 7:52 ` Andy Lutomirski
2014-09-03 8:01 ` Paolo Bonzini
2014-09-03 8:05 ` Benjamin Herrenschmidt
2014-09-03 12:11 ` Paolo Bonzini
2014-09-03 15:07 ` Andy Lutomirski
2014-09-03 15:11 ` Paolo Bonzini
2014-09-03 16:39 ` Michael S. Tsirkin
2014-09-03 20:38 ` Andy Lutomirski
2014-09-03 7:43 ` Paolo Bonzini
2014-09-03 6:42 ` Rusty Russell
2014-09-03 7:50 ` Andy Lutomirski
2014-09-05 2:31 ` Rusty Russell
2014-09-05 2:57 ` Andy Lutomirski
2014-09-05 5:20 ` Benjamin Herrenschmidt
2014-09-05 7:33 ` Christian Borntraeger
2014-09-10 15:36 ` Christopher Covington
2014-09-10 16:15 ` Andy Lutomirski
2014-09-05 5:16 ` Benjamin Herrenschmidt
2014-09-14 8:58 ` Michael S. Tsirkin
2014-09-03 12:51 ` Michael S. Tsirkin
2014-09-05 2:32 ` Rusty Russell
2014-09-05 3:06 ` Andy Lutomirski
2014-09-02 21:10 ` Michael S. Tsirkin
2014-09-02 21:49 ` Andy Lutomirski
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