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From: Lu Baolu <baolu.lu@linux.intel.com>
To: Qian Cai <cai@lca.pw>
Cc: kevin.tian@intel.com, ashok.raj@intel.com,
	linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
	jacob.jun.pan@intel.com, David Woodhouse <dwmw2@infradead.org>
Subject: Re: [PATCH v2 1/1] iommu/vt-d: Add Kconfig option to enable/disable scalable mode
Date: Tue, 12 Nov 2019 13:48:12 +0800
Message-ID: <fefea7dd-8cde-889d-0883-7d94b8d85f20@linux.intel.com> (raw)
In-Reply-To: <77EC0C76-22C1-4982-8E0A-9AD7223B3410@lca.pw>

Hi,

On 11/11/19 10:05 PM, Qian Cai wrote:
> 
> 
>> On Nov 11, 2019, at 12:23 AM, Lu Baolu <baolu.lu@linux.intel.com> wrote:
>>
>> The scalable mode is defined in VT-d 3.0. The scalable mode capability
>> could be checked by reading /sys/devices/virtual/iommu/dmar*/intel-
>> iommu/ecap. It's currently not friendly for reading. You need to decode
>> it according to the spec.
> 
> This looks like some perfect information to put in the Kconfig description.
> 

Okay. Will add it in the next version.

Best regards,
baolu
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Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-09  3:40 Lu Baolu
2019-11-09  3:59 ` Qian Cai
2019-11-11  1:27   ` Lu Baolu
2019-11-11  2:00     ` Qian Cai
2019-11-11  2:17       ` Lu Baolu
2019-11-11  2:58 ` Qian Cai
2019-11-11  5:20   ` Lu Baolu
2019-11-11 14:05     ` Qian Cai
2019-11-12  5:48       ` Lu Baolu [this message]

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