From: Andrew Cooper <andrew.cooper3@citrix.com>
To: "Roger Pau Monné" <roger.pau@citrix.com>
Cc: Juergen Gross <jgross@suse.com>,
Stefano Stabellini <sstabellini@kernel.org>,
Wei Liu <wei.liu2@citrix.com>,
Xen-devel <xen-devel@lists.xen.org>,
Julien Grall <julien.grall@arm.com>,
Jan Beulich <JBeulich@suse.com>
Subject: Re: [PATCH v3 2/7] docs: Improve documentation and parsing for iommu=
Date: Mon, 21 Jan 2019 17:30:20 +0000 [thread overview]
Message-ID: <b1da343d-0548-41b4-0dbd-89344ae1bcdc@citrix.com> (raw)
In-Reply-To: <20190116110639.nomqk3whreaxy4e4@mac>
On 16/01/2019 11:06, Roger Pau Monné wrote:
> On Wed, Jan 16, 2019 at 09:00:45AM +0000, Andrew Cooper wrote:
>>
>> ->> Control the use of Snoop Control.
>> -
>> -> `sharept`
>> -
>> -> Default: `true`
>> -
>> ->> Control whether CPU and IOMMU page tables should be shared.
>> -
>> -> `dom0-passthrough`
>> -
>> -> **WARNING: This command line option is deprecated, and superseded by
>> -> _dom0-iommu=passthrough_ - using both options in combination is undefined.**
>> -
>> -> `dom0-strict`
>> + Due to implementation choices, sharing pagetables doesn't work on AMD
>> + hardware, and this option is ignored. It is enabled by default on Intel
> ^ compatible
The VT-d driver binds specifically to Intel systems. I'm not aware of
any non-Intel systems which use VT-d, but we'd need to make code changes
if we find any.
~Andrew
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next prev parent reply other threads:[~2019-01-21 17:30 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-16 9:00 [PATCH v3 for-4.12 0/7] Docs improvements, and dom0 construction fixes Andrew Cooper
2019-01-16 9:00 ` [PATCH v3 1/7] docs: Improve documentation for dom0= and dom0-iommu= Andrew Cooper
2019-01-16 10:53 ` Roger Pau Monné
2019-01-16 19:54 ` Andrew Cooper
2019-01-16 11:52 ` Jan Beulich
2019-01-16 19:51 ` Andrew Cooper
2019-01-17 8:43 ` Roger Pau Monné
2019-01-17 9:08 ` Andrew Cooper
2019-01-17 9:14 ` Juergen Gross
2019-01-17 11:59 ` Jan Beulich
2019-01-17 12:11 ` Andrew Cooper
2019-01-17 11:20 ` Jan Beulich
2019-01-17 12:15 ` Andrew Cooper
2019-01-17 12:26 ` Jan Beulich
2019-01-21 17:24 ` Andrew Cooper
2019-01-16 9:00 ` [PATCH v3 2/7] docs: Improve documentation and parsing for iommu= Andrew Cooper
2019-01-16 11:06 ` Roger Pau Monné
2019-01-21 17:30 ` Andrew Cooper [this message]
2019-01-16 13:47 ` Jan Beulich
2019-01-16 9:00 ` [PATCH v3 3/7] docs: Improve documentation and parsing for pci= Andrew Cooper
2019-01-16 11:08 ` Roger Pau Monné
2019-01-16 13:52 ` Jan Beulich
2019-01-16 9:00 ` [PATCH v3 4/7] docs: Improve documentation and parsing for efi= Andrew Cooper
2019-01-16 14:00 ` Jan Beulich
2019-01-16 9:00 ` [PATCH v3 5/7] x86/dom0: Improve dom0= useability Andrew Cooper
2019-01-16 11:13 ` Roger Pau Monné
2019-01-16 14:08 ` Jan Beulich
2019-01-16 19:58 ` Andrew Cooper
2019-01-17 11:21 ` Jan Beulich
2019-01-16 9:00 ` [PATCH v3 6/7] xen/dom0: Drop iommu_hwdom_inclusive entirely Andrew Cooper
2019-01-16 11:24 ` Roger Pau Monné
2019-01-17 13:32 ` Jan Beulich
2019-01-17 14:51 ` Roger Pau Monné
2019-01-16 9:00 ` [PATCH v3 7/7] xen/dom0: Add a dom0-iommu=none option Andrew Cooper
2019-01-16 11:32 ` Roger Pau Monné
2019-01-17 10:55 ` Wei Liu
2019-01-17 13:35 ` Jan Beulich
2019-01-21 18:08 ` Andrew Cooper
2019-01-22 8:06 ` Jan Beulich
2019-01-22 13:42 ` Andrew Cooper
2019-01-16 11:38 ` [PATCH v3 for-4.12 0/7] Docs improvements, and dom0 construction fixes Juergen Gross
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