From: Paul Durrant <Paul.Durrant@citrix.com>
To: 'Jan Beulich' <JBeulich@suse.com>
Cc: xen-devel <xen-devel@lists.xenproject.org>,
Kevin Tian <kevin.tian@intel.com>, Wei Liu <wei.liu2@citrix.com>,
George Dunlap <George.Dunlap@citrix.com>
Subject: Re: [PATCH v8 7/7] vtd: add lookup_page method to iommu_ops
Date: Thu, 13 Sep 2018 14:04:50 +0000 [thread overview]
Message-ID: <33c6c87a30cd471ab3499e297da768ca@AMSPEX02CL03.citrite.net> (raw)
In-Reply-To: <5B9A6C9A02000078001E849B@prv1-mh.provo.novell.com>
> -----Original Message-----
> From: Jan Beulich [mailto:JBeulich@suse.com]
> Sent: 13 September 2018 14:57
> To: Paul Durrant <Paul.Durrant@citrix.com>
> Cc: George Dunlap <George.Dunlap@citrix.com>; Wei Liu
> <wei.liu2@citrix.com>; Kevin Tian <kevin.tian@intel.com>; xen-devel <xen-
> devel@lists.xenproject.org>
> Subject: RE: [PATCH v8 7/7] vtd: add lookup_page method to iommu_ops
>
> >>> On 13.09.18 at 15:50, <Paul.Durrant@citrix.com> wrote:
> > Ok. I'll spell it out in the header if you think it is non-obvious.
>
> Obvious or not - do we _have_ any such outer locking in place right now?
>
Yes. The locking is either via the P2M or grant table locks for all current uses or map and unmap that I can see.
Paul
> Jan
>
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next prev parent reply other threads:[~2018-09-13 14:06 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-13 10:31 [PATCH v8 0/6] paravirtual IOMMU pre-requisites and clean-up Paul Durrant
2018-09-13 10:31 ` [PATCH v8 1/7] iommu: introduce the concept of DFN Paul Durrant
2018-09-13 12:45 ` Jan Beulich
2018-09-13 13:09 ` Paul Durrant
2018-09-13 13:21 ` Paul Durrant
2018-09-13 13:40 ` Jan Beulich
2018-09-13 13:46 ` Paul Durrant
2018-09-13 14:14 ` Paul Durrant
2018-09-13 10:31 ` [PATCH v8 2/7] iommu: make use of type-safe DFN and MFN in exported functions Paul Durrant
2018-09-13 10:31 ` [PATCH v8 3/7] iommu: push use of type-safe DFN and MFN into iommu_ops Paul Durrant
2018-09-13 10:31 ` [PATCH v8 4/7] iommu: don't domain_crash() inside iommu_map/unmap_page() Paul Durrant
2018-09-13 10:31 ` [PATCH v8 5/7] memory: add check_get_page_from_gfn() as a wrapper Paul Durrant
2018-09-13 13:22 ` Jan Beulich
2018-09-13 13:43 ` Paul Durrant
2018-09-13 10:31 ` [PATCH v7 6/6] vtd: add lookup_page method to iommu_ops Paul Durrant
2018-09-13 10:31 ` [PATCH v8 6/7] vtd: add missing check for shared EPT Paul Durrant
2018-09-13 10:31 ` [PATCH v8 7/7] vtd: add lookup_page method to iommu_ops Paul Durrant
2018-09-13 13:29 ` Jan Beulich
2018-09-13 13:34 ` Paul Durrant
2018-09-13 13:44 ` Jan Beulich
2018-09-13 13:50 ` Paul Durrant
2018-09-13 13:56 ` Jan Beulich
2018-09-13 14:04 ` Paul Durrant [this message]
2018-09-13 14:50 ` Jan Beulich
2018-09-13 14:53 ` Paul Durrant
2018-09-14 7:58 ` Jan Beulich
2018-09-14 8:11 ` Paul Durrant
2018-09-14 8:28 ` Jan Beulich
2018-09-14 8:48 ` Paul Durrant
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