Groups > linux.kernel > #1194104

Re: [PATCH char-misc-next 10/19] lib: convert iova.c into a library

From	Robin Murphy <robin.murphy@arm.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH char-misc-next 10/19] lib: convert iova.c into a library
Date	2015-07-28 12:50 +0200
Message-ID	<pRaCl-6MU-1@gated-at.bofh.it> (permalink)
References	<pR00h-8jZ-7@gated-at.bofh.it> <pR09Y-8vE-29@gated-at.bofh.it> <pR9ZE-61X-31@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On 28/07/15 11:03, Joerg Roedel wrote:
> On Mon, Jul 27, 2015 at 04:57:32PM -0700, Ashutosh Dixit wrote:
>> From: Harish Chegondi <harish.chegondi@intel.com>
>>
>> This patch converts iova.c into a library, moving it from
>> drivers/iommu/ to lib/, and exports its virtual address allocation and
>> management functions so that other modules can reuse them.
>>
>> Cc: Joerg Roedel <joro@8bytes.org>
>> Reviewed-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
>> Reviewed-by: Sudeep Dutt <sudeep.dutt@intel.com>
>> Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
>
> Where is this going to be used outside of the IOMMU world?
>

...and how does it relate to the patches from Sakari (+CC) doing much 
the same thing[1]?

Having gone and fished out the main LKML thread ([2], to help anyone 
else missing it), I don't see any obvious dependency on the Intel IOMMU 
driver - what happens here if that is compiled out and hasn't called 
iommu_iova_cache_init() first?

Robin.

[1]:http://thread.gmane.org/gmane.linux.kernel.iommu/10142
[2]:http://thread.gmane.org/gmane.linux.kernel/2005895

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Thread

[PATCH char-misc-next 00/19] misc: mic: Enable COSM and remaining SCIF functionality Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:30 +0200
  [PATCH char-misc-next 01/19] misc: mic: SCIF poll Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:30 +0200
  [PATCH char-misc-next 02/19] misc: mic: Add support for kernel mode SCIF clients Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:30 +0200
  [PATCH char-misc-next 19/19] misc: mic: SCIF RMA nodeqp and minor miscellaneous changes Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:40 +0200
  [PATCH char-misc-next 18/19] misc: mic: SCIF fence Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:40 +0200
  [PATCH char-misc-next 12/19] misc: mic: SCIF RMA header file and IOCTL changes Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:40 +0200
  [PATCH char-misc-next 10/19] lib: convert iova.c into a library Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:40 +0200
    Re: [PATCH char-misc-next 10/19] lib: convert iova.c into a library Joerg Roedel <joro@8bytes.org> - 2015-07-28 12:10 +0200
      Re: [PATCH char-misc-next 10/19] lib: convert iova.c into a library Robin Murphy <robin.murphy@arm.com> - 2015-07-28 12:50 +0200
    Re: [PATCH char-misc-next 10/19] lib: convert iova.c into a library Andrew Morton <akpm@linux-foundation.org> - 2015-07-28 22:50 +0200
  [PATCH char-misc-next 11/19] dma: Add support to program MIC x100 status descriptiors Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:40 +0200
  [PATCH char-misc-next 16/19] misc: mic: SCIF remote memory map/unmap interface Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:40 +0200
  [PATCH char-misc-next 15/19] misc: mic: SCIF RMA list operations Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:40 +0200
  [PATCH char-misc-next 04/19] misc: mic: Coprocessor State Management (COSM) driver Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:40 +0200
  [PATCH char-misc-next 13/19] misc: mic: SCIF RMA header file Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:40 +0200
  [PATCH char-misc-next 05/19] misc: mic: COSM SCIF server Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:40 +0200
  [PATCH char-misc-next 03/19] misc: mic: MIC COSM bus Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:40 +0200
  [PATCH char-misc-next 08/19] misc: mic: Remove COSM functionality from the MIC card driver Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 01:50 +0200
  [PATCH char-misc-next 06/19] misc: mic: COSM client driver Ashutosh Dixit <ashutosh.dixit@intel.com> - 2015-07-28 02:00 +0200

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