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From: "Zeng, Jason" <jason.zeng@intel.com>
To: Deepa Dinamani <deepa.kernel@gmail.com>
Cc: "Tian, Kevin" <kevin.tian@intel.com>,
	"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
	"iommu@lists.linux-foundation.org"
	<iommu@lists.linux-foundation.org>,
	"Zeng, Jason" <jason.zeng@intel.com>,
	David Woodhouse <dwmw2@infradead.org>
Subject: RE: [PATCH] intel-iommu: Turn off translations at shutdown
Date: Mon, 11 Nov 2019 00:39:15 +0000
Message-ID: <8D8B600C3EC1B64FAD4503F0B66C61F23BC0DC@SHSMSX103.ccr.corp.intel.com> (raw)
In-Reply-To: <CABeXuvoiX639HchLbgTHLiXPh=Yr2dJHUp2Yqc6pNJ3As1OJ8A@mail.gmail.com>

> -----Original Message-----
> > > > For VMM live update case, we should be able to detect and bypass
> > > > the shutdown that Deepa introduced here, so keep IOMMU still
> operating?
> > >
> > > Is that a 'yes' to Deepa's "if someone wants to make it conditional,
> > > we can do that" ?
> >
> > Yes, I think so. Thanks!
> 
> Are these changes already part of the kernel like avoiding shutdown of the
> passthrough devices? device_shutdown() doesn't seem to be doing anything
> selectively as of now.
> 

No, it is not in upstream yet. It is an on-going effort, which tries to kexec reboot
the host while keeping IOMMU still working.

Thanks,
Jason

> Thanks,
> Deepa
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      parent reply index

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-07 20:59 Deepa Dinamani
2019-11-07 21:27 ` Deepa Dinamani
2019-11-08  3:07   ` Lu Baolu
2019-11-08  3:06 ` Lu Baolu
2019-11-08 22:28   ` Deepa Dinamani
2019-11-09  0:35     ` Lu Baolu
2019-11-08  7:54 ` David Woodhouse
2019-11-08  8:47   ` Zeng, Jason
2019-11-08  8:57     ` David Woodhouse
2019-11-08  9:11       ` Zeng, Jason
2019-11-08 22:48         ` Deepa Dinamani
2019-11-10 18:24           ` Deepa Dinamani
2019-11-10 20:36             ` Deepa Dinamani
2019-11-11  2:35               ` Zeng, Jason
2019-11-11  0:39           ` Zeng, Jason [this message]

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