> -Original Message-
> From: tiantao (H)
> Sent: Friday, February 11, 2022 4:15 PM
> To: Song Bao Hua (Barry Song) ; sh...@kernel.org;
> chenxiang (M)
> Cc: iommu@lists.linux-foundation.org; linux-kselft...@vger.kernel.org;
> linux...@openeuler.org
> Subj
> -Original Message-
> From: chenxiang (M)
> Sent: Tuesday, February 8, 2022 8:05 PM
> To: Song Bao Hua (Barry Song) ; h...@lst.de;
> m.szyprow...@samsung.com; robin.mur...@arm.com
> Cc: linux...@openeuler.org; Linuxarm ;
> iommu@lists.linux-foundat
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Tuesday, December 7, 2021 4:01 AM
> To: Jay Chen ; h...@lst.de;
> m.szyprow...@samsung.com;
> linux-ker...@vger.kernel.org; iommu@lists.linux-foundation.org; Song Bao Hua
> (Barry S
> -Original Message-
> From: fanghao (A)
> Sent: Tuesday, March 30, 2021 7:34 PM
> To: h...@lst.de; m.szyprow...@samsung.com; robin.mur...@arm.com; Song Bao Hua
> (Barry Song)
> Cc: iommu@lists.linux-foundation.org; linux...@openeuler.org;
> linux-kselft...@vge
s.org; h...@lst.de;
> m.szyprow...@samsung.com; Song Bao Hua (Barry Song)
> ; iommu@lists.linux-foundation.org;
> linux-ker...@vger.kernel.org
> Subject: Re: [PATCH] dma-mapping: make map_benchmark compile into module
>
> On Wed, Mar 24, 2021 at 10:17:38AM +0800, Tian Tao wrote:
>
> -Original Message-
> From: tiantao (H)
> Sent: Wednesday, March 24, 2021 3:18 PM
> To: a...@linux-foundation.org; pet...@infradead.org; paul...@kernel.org;
> a...@kernel.org; t...@linutronix.de; rost...@goodmis.org; h...@lst.de;
> m.szyprow...@samsung.com; Song B
> -Original Message-
> From: chenxiang (M)
> Sent: Thursday, March 18, 2021 10:30 PM
> To: h...@lst.de; m.szyprow...@samsung.com; robin.mur...@arm.com; Song Bao Hua
> (Barry Song)
> Cc: iommu@lists.linux-foundation.org; linux...@openeuler.org;
> linux-ksel
> -Original Message-
> From: Jason Gunthorpe [mailto:j...@ziepe.ca]
> Sent: Thursday, February 11, 2021 7:04 AM
> To: Song Bao Hua (Barry Song)
> Cc: David Hildenbrand ; Wangzhou (B)
> ; linux-ker...@vger.kernel.org;
> iommu@lists.linux-foundation.org; linux...@k
> -Original Message-
> From: Jason Gunthorpe [mailto:j...@ziepe.ca]
> Sent: Wednesday, February 10, 2021 2:54 AM
> To: Song Bao Hua (Barry Song)
> Cc: David Hildenbrand ; Wangzhou (B)
> ; linux-ker...@vger.kernel.org;
> iommu@lists.linux-foundation.org; linux...@k
> -Original Message-
> From: Jason Gunthorpe [mailto:j...@ziepe.ca]
> Sent: Tuesday, February 9, 2021 10:30 AM
> To: Song Bao Hua (Barry Song)
> Cc: David Hildenbrand ; Wangzhou (B)
> ; linux-ker...@vger.kernel.org;
> iommu@lists.linux-foundation.org; linux...@k
> -Original Message-
> From: David Hildenbrand [mailto:da...@redhat.com]
> Sent: Monday, February 8, 2021 11:37 PM
> To: Song Bao Hua (Barry Song) ; Matthew Wilcox
>
> Cc: Wangzhou (B) ; linux-ker...@vger.kernel.org;
> iommu@lists.linux-foundation.org; linux...@k
.infradead.org; linux-...@vger.kernel.org; Andrew
> Morton ; Alexander Viro ;
> gre...@linuxfoundation.org; Song Bao Hua (Barry Song)
> ; kevin.t...@intel.com;
> jean-phili...@linaro.org; eric.au...@redhat.com; Liguozhu (Kenneth)
> ; zhangfei@linaro.org; chensihang (A)
>
>
> -Original Message-
> From: owner-linux...@kvack.org [mailto:owner-linux...@kvack.org] On Behalf Of
> David Hildenbrand
> Sent: Monday, February 8, 2021 9:22 PM
> To: Song Bao Hua (Barry Song) ; Matthew Wilcox
>
> Cc: Wangzhou (B) ; linux-ker...@vger.kernel.org
> -Original Message-
> From: David Rientjes [mailto:rient...@google.com]
> Sent: Monday, February 8, 2021 3:18 PM
> To: Song Bao Hua (Barry Song)
> Cc: Matthew Wilcox ; Wangzhou (B)
> ; linux-ker...@vger.kernel.org;
> iommu@lists.linux-foundation.org; linux...@k
> -Original Message-
> From: owner-linux...@kvack.org [mailto:owner-linux...@kvack.org] On Behalf Of
> Matthew Wilcox
> Sent: Monday, February 8, 2021 2:31 PM
> To: Song Bao Hua (Barry Song)
> Cc: Wangzhou (B) ; linux-ker...@vger.kernel.org;
> iommu@lists.linux-
adead.org;
> linux-...@vger.kernel.org; Andrew Morton ;
> Alexander Viro ; gre...@linuxfoundation.org; Song
> Bao Hua (Barry Song) ; j...@ziepe.ca;
> kevin.t...@intel.com; jean-phili...@linaro.org; eric.au...@redhat.com;
> Liguozhu (Kenneth) ; zhangfei@linaro.org;
> chensihang (A)
> S
> -Original Message-
> From: Christoph Hellwig [mailto:h...@lst.de]
> Sent: Friday, February 5, 2021 11:36 PM
> To: Song Bao Hua (Barry Song)
> Cc: Christoph Hellwig ; m.szyprow...@samsung.com;
> robin.mur...@arm.com; iommu@lists.linux-foundation.org;
> linux-k
> -Original Message-
> From: Christoph Hellwig [mailto:h...@lst.de]
> Sent: Friday, February 5, 2021 10:21 PM
> To: Song Bao Hua (Barry Song)
> Cc: m.szyprow...@samsung.com; h...@lst.de; robin.mur...@arm.com;
> iommu@lists.linux-foundation.org; linux-ker...@vger.k
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Friday, February 5, 2021 12:51 PM
> To: Song Bao Hua (Barry Song) ;
> m.szyprow...@samsung.com; h...@lst.de; iommu@lists.linux-foundation.org
> Cc: linux-ker...@vger.kernel.org; linu
> -Original Message-
> From: Tian, Kevin [mailto:kevin.t...@intel.com]
> Sent: Tuesday, February 2, 2021 3:52 PM
> To: Jason Gunthorpe
> Cc: Song Bao Hua (Barry Song) ; chensihang (A)
> ; Arnd Bergmann ; Greg
> Kroah-Hartman ; linux-ker...@vger.kernel.org
> -Original Message-
> From: Jason Gunthorpe [mailto:j...@ziepe.ca]
> Sent: Tuesday, February 2, 2021 12:44 PM
> To: Tian, Kevin
> Cc: Song Bao Hua (Barry Song) ; chensihang (A)
> ; Arnd Bergmann ; Greg
> Kroah-Hartman ; linux-ker...@vger.kernel.org;
> iommu@li
> -Original Message-
> From: Tian, Kevin [mailto:kevin.t...@intel.com]
> Sent: Friday, January 29, 2021 11:09 PM
> To: Song Bao Hua (Barry Song) ; Jason Gunthorpe
>
> Cc: chensihang (A) ; Arnd Bergmann
> ; Greg Kroah-Hartman ;
> linux-ker...@vger.kerne
> -Original Message-
> From: Jason Gunthorpe [mailto:j...@ziepe.ca]
> Sent: Wednesday, January 27, 2021 7:20 AM
> To: Song Bao Hua (Barry Song)
> Cc: Wangzhou (B) ; Greg Kroah-Hartman
> ; Arnd Bergmann ; Zhangfei Gao
> ; linux-accelerat...@lists.oz
> -Original Message-
> From: Jason Gunthorpe [mailto:j...@ziepe.ca]
> Sent: Tuesday, January 26, 2021 2:13 PM
> To: Song Bao Hua (Barry Song)
> Cc: Wangzhou (B) ; Greg Kroah-Hartman
> ; Arnd Bergmann ; Zhangfei Gao
> ; linux-accelerat...@lists.ozlabs.org;
> linu
> -Original Message-
> From: owner-linux...@kvack.org [mailto:owner-linux...@kvack.org] On Behalf Of
> Jason Gunthorpe
> Sent: Tuesday, January 26, 2021 12:16 PM
> To: Song Bao Hua (Barry Song)
> Cc: Wangzhou (B) ; Greg Kroah-Hartman
> ; Arnd Bergmann ; Zhangfei Ga
;
> iommu@lists.linux-foundation.org; linux...@kvack.org; Song Bao Hua (Barry
> Song)
> ; Liguozhu (Kenneth) ;
> chensihang (A)
> Subject: Re: [RFC PATCH v2] uacce: Add uacce_ctrl misc device
>
> On Mon, Jan 25, 2021 at 04:34:56PM +0800, Zhou Wang wrote:
>
> > +static
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Saturday, December 19, 2020 7:10 AM
> To: Song Bao Hua (Barry Song) ; h...@lst.de;
> m.szyprow...@samsung.com
> Cc: iommu@lists.linux-foundation.org; Linuxarm ; Dan
> Carpenter
>
> -Original Message-
> From: Heiner Kallweit [mailto:hkallwe...@gmail.com]
> Sent: Monday, December 14, 2020 5:33 AM
> To: Christoph Hellwig ; Marek Szyprowski
> ; Robin Murphy ; Song Bao Hua
> (Barry Song)
> Cc: open list:AMD IOMMU (AMD-VI) ; Linux
> Kernel
> -Original Message-
> From: Dan Carpenter [mailto:dan.carpen...@oracle.com]
> Sent: Wednesday, December 9, 2020 8:00 PM
> To: Song Bao Hua (Barry Song)
> Cc: iommu@lists.linux-foundation.org
> Subject: [bug report] dma-mapping: add benchmark support for str
> -Original Message-
> From: Colin King [mailto:colin.k...@canonical.com]
> Sent: Thursday, November 26, 2020 3:05 AM
> To: Song Bao Hua (Barry Song) ; Christoph
> Hellwig ; Marek Szyprowski ;
> Robin Murphy ; iommu@lists.linux-foundation.org
> Cc: kernel-janit...@v
> -Original Message-
> From: Colin King [mailto:colin.k...@canonical.com]
> Sent: Thursday, November 26, 2020 2:56 AM
> To: Song Bao Hua (Barry Song) ; Christoph
> Hellwig ; Marek Szyprowski ;
> Robin Murphy ; iommu@lists.linux-foundation.org
> Cc: kernel-janit...@v
> -Original Message-
> From: Christoph Hellwig [mailto:h...@lst.de]
> Sent: Sunday, November 15, 2020 9:45 PM
> To: Song Bao Hua (Barry Song)
> Cc: Christoph Hellwig ; iommu@lists.linux-foundation.org;
> robin.mur...@arm.com; m.szyprow...@samsung.com; Linuxar
> -Original Message-
> From: Christoph Hellwig [mailto:h...@lst.de]
> Sent: Sunday, November 15, 2020 5:54 AM
> To: Song Bao Hua (Barry Song)
> Cc: iommu@lists.linux-foundation.org; h...@lst.de; robin.mur...@arm.com;
> m.szyprow...@samsung.com; Linuxar
> -Original Message-
> From: John Garry
> Sent: Wednesday, November 11, 2020 10:37 PM
> To: Song Bao Hua (Barry Song) ;
> iommu@lists.linux-foundation.org; h...@lst.de; robin.mur...@arm.com;
> m.szyprow...@samsung.com
> Cc: linux-kselft...@vger.kernel.org; Will De
> -Original Message-
> From: John Garry
> Sent: Tuesday, November 10, 2020 9:39 PM
> To: Song Bao Hua (Barry Song) ;
> iommu@lists.linux-foundation.org; h...@lst.de; robin.mur...@arm.com;
> m.szyprow...@samsung.com
> Cc: linux-kselft...@vger.kernel.org; Will De
Hello Robin, Christoph,
Any further comment? John suggested that "depends on DEBUG_FS" should be added
in Kconfig.
I am collecting more comments to send v4 together with fixing this minor issue
:-)
Thanks
Barry
> -Original Message-
> From: Song Bao Hua (Barry Song
> -Original Message-
> From: John Garry
> Sent: Monday, November 2, 2020 10:19 PM
> To: Song Bao Hua (Barry Song) ;
> iommu@lists.linux-foundation.org; h...@lst.de; robin.mur...@arm.com;
> m.szyprow...@samsung.com
> Cc: linux-kselft...@vger.kernel.org; Shuah
> -Original Message-
> From: Song Bao Hua (Barry Song) [mailto:song.bao@hisilicon.com]
> Sent: Saturday, October 31, 2020 10:45 PM
> To: Robin Murphy ;
> iommu@lists.linux-foundation.org; h...@lst.de; m.szyprow...@samsung.com
> Cc: j...@8bytes.org; w...@kernel.org
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Saturday, October 31, 2020 4:48 AM
> To: Song Bao Hua (Barry Song) ;
> iommu@lists.linux-foundation.org; h...@lst.de; m.szyprow...@samsung.com
> Cc: j...@8bytes.org; w...@kernel.org
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Friday, October 30, 2020 8:38 AM
> To: Song Bao Hua (Barry Song) ;
> iommu@lists.linux-foundation.org; h...@lst.de; m.szyprow...@samsung.com
> Cc: j...@8bytes.org; w...@kernel.org; sh...@ke
> -Original Message-
> From: h...@lst.de [mailto:h...@lst.de]
> Sent: Tuesday, October 27, 2020 8:55 PM
> To: Song Bao Hua (Barry Song)
> Cc: Robin Murphy ; h...@lst.de;
> iommu@lists.linux-foundation.org; linux-ker...@vger.kernel.org
> Subject: Re: [PATCH] d
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Tuesday, October 27, 2020 1:25 AM
> To: h...@lst.de
> Cc: iommu@lists.linux-foundation.org; linux-ker...@vger.kernel.org; Song Bao
> Hua (Barry Song)
> Subject: [PATCH] dma: Per-NUMA-n
> -Original Message-
> From: linux-kernel-ow...@vger.kernel.org
> [mailto:linux-kernel-ow...@vger.kernel.org] On Behalf Of John Garry
> Sent: Saturday, August 22, 2020 1:54 AM
> To: w...@kernel.org; robin.mur...@arm.com
> Cc: j...@8bytes.org; linux-arm-ker...@lists.infradead.org;
>
> -Original Message-
> From: linux-kernel-ow...@vger.kernel.org
> [mailto:linux-kernel-ow...@vger.kernel.org] On Behalf Of Christoph Hellwig
> Sent: Friday, August 21, 2020 6:19 PM
> To: Song Bao Hua (Barry Song)
> Cc: h...@lst.de; m.szyprow...@samsung.com; robin.m
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Friday, August 28, 2020 11:18 PM
> To: Song Bao Hua (Barry Song) ; Will Deacon
>
> Cc: iommu@lists.linux-foundation.org; linux-arm-ker...@lists.infradead.org;
> j...@8bytes.org; Li
> -Original Message-
> From: Will Deacon [mailto:w...@kernel.org]
> Sent: Friday, August 28, 2020 10:29 PM
> To: Song Bao Hua (Barry Song)
> Cc: iommu@lists.linux-foundation.org; linux-arm-ker...@lists.infradead.org;
> robin.mur...@arm.com; j...@8bytes.org; Linux
> -Original Message-
> From: Jean-Philippe Brucker [mailto:jean-phili...@linaro.org]
> Sent: Friday, August 28, 2020 7:41 PM
> To: Song Bao Hua (Barry Song)
> Cc: iommu@lists.linux-foundation.org; linux-arm-ker...@lists.infradead.org;
> robin.mur...@arm.com; w...@ke
> -Original Message-
> From: Song Bao Hua (Barry Song)
> Sent: Saturday, August 22, 2020 7:27 AM
> To: 'Mike Kravetz' ; h...@lst.de;
> m.szyprow...@samsung.com; robin.mur...@arm.com; w...@kernel.org;
> ganapatrao.kulka...@cavium.com; catalin.mari...@arm.com;
> a...
> -Original Message-
> From: Mike Kravetz [mailto:mike.krav...@oracle.com]
> Sent: Saturday, August 22, 2020 5:53 AM
> To: Song Bao Hua (Barry Song) ; h...@lst.de;
> m.szyprow...@samsung.com; robin.mur...@arm.com; w...@kernel.org;
> ganapatrao.kulka...@cavium
> -Original Message-
> From: Randy Dunlap [mailto:rdun...@infradead.org]
> Sent: Saturday, August 22, 2020 4:08 AM
> To: Song Bao Hua (Barry Song) ; h...@lst.de;
> m.szyprow...@samsung.com; robin.mur...@arm.com; w...@kernel.org;
> ganapatrao.kulka...@cavium.com; catal
> -Original Message-
> From: Mike Rapoport [mailto:r...@linux.ibm.com]
> Sent: Saturday, August 22, 2020 2:28 AM
> To: Song Bao Hua (Barry Song)
> Cc: h...@lst.de; m.szyprow...@samsung.com; robin.mur...@arm.com;
> w...@kernel.org; ganapatrao.kulka...@cavium.c
> -Original Message-
> From: Will Deacon [mailto:w...@kernel.org]
> Sent: Friday, August 21, 2020 9:27 PM
> To: Song Bao Hua (Barry Song)
> Cc: h...@lst.de; m.szyprow...@samsung.com; robin.mur...@arm.com;
> ganapatrao.kulka...@cavium.com; catalin.mari...@arm.com;
&
> -Original Message-
> From: Will Deacon [mailto:w...@kernel.org]
> Sent: Friday, August 21, 2020 8:47 PM
> To: Song Bao Hua (Barry Song)
> Cc: h...@lst.de; m.szyprow...@samsung.com; robin.mur...@arm.com;
> ganapatrao.kulka...@cavium.com; catalin.mari...@arm.com;
&
> -Original Message-
> From: linux-kernel-ow...@vger.kernel.org
> [mailto:linux-kernel-ow...@vger.kernel.org] On Behalf Of Randy Dunlap
> Sent: Friday, August 21, 2020 2:50 PM
> To: Song Bao Hua (Barry Song) ; h...@lst.de;
> m.szyprow...@samsung.com; robin
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Wednesday, August 19, 2020 2:31 AM
> To: Song Bao Hua (Barry Song) ; w...@kernel.org;
> j...@8bytes.org
> Cc: Zengtao (B) ;
> iommu@lists.linux-foundation.org; linux-arm-ker..
> -Original Message-
> From: John Garry
> Sent: Tuesday, August 4, 2020 3:34 AM
> To: Song Bao Hua (Barry Song) ; w...@kernel.org;
> robin.mur...@arm.com; j...@8bytes.org; iommu@lists.linux-foundation.org
> Cc: Zengtao (B) ;
> linux-arm-ker...@lists.infradead.org
>
> -Original Message-
> From: Will Deacon [mailto:w...@kernel.org]
> Sent: Saturday, August 1, 2020 12:22 AM
> To: Song Bao Hua (Barry Song)
> Cc: John Garry ; robin.mur...@arm.com;
> j...@8bytes.org; iommu@lists.linux-foundation.org; Zengtao (B)
> ; Linux
> -Original Message-
> From: John Garry
> Sent: Friday, July 31, 2020 10:21 PM
> To: Song Bao Hua (Barry Song) ; w...@kernel.org;
> robin.mur...@arm.com; j...@8bytes.org; iommu@lists.linux-foundation.org
> Cc: Zengtao (B) ; Linuxarm
> ; linux-arm-ker...@lists.infrad
> -Original Message-
> From: Christoph Hellwig [mailto:h...@lst.de]
> Sent: Wednesday, July 29, 2020 12:23 AM
> To: Song Bao Hua (Barry Song)
> Cc: Christoph Hellwig ; m.szyprow...@samsung.com;
> robin.mur...@arm.com; w...@kernel.org; ganapatrao.kulka...@cavium.c
> -Original Message-
> From: Christoph Hellwig [mailto:h...@lst.de]
> Sent: Tuesday, July 28, 2020 11:53 PM
> To: Song Bao Hua (Barry Song)
> Cc: h...@lst.de; m.szyprow...@samsung.com; robin.mur...@arm.com;
> w...@kernel.org; ganapatrao.kulka...@cavium.com;
> ca
> -Original Message-
> From: iommu [mailto:iommu-boun...@lists.linux-foundation.org] On Behalf
> Of Christoph Hellwig
> Sent: Friday, July 24, 2020 12:02 AM
> To: iommu@lists.linux-foundation.org
> Cc: robin.mur...@arm.com
> Subject: [PATCH v2] dma-contiguous: cleanup
> -Original Message-
> From: Christoph Hellwig [mailto:h...@lst.de]
> Sent: Friday, July 24, 2020 12:01 AM
> To: Song Bao Hua (Barry Song)
> Cc: Christoph Hellwig ; m.szyprow...@samsung.com;
> robin.mur...@arm.com; w...@kernel.org; ganapatrao.kulka...@cavium.c
> -Original Message-
> From: Christoph Hellwig [mailto:h...@lst.de]
> Sent: Thursday, July 23, 2020 2:30 AM
> To: Song Bao Hua (Barry Song)
> Cc: h...@lst.de; m.szyprow...@samsung.com; robin.mur...@arm.com;
> w...@kernel.org; ganapatrao.kulka...@cavium.com;
> ca
> -Original Message-
> From: Christoph Hellwig [mailto:h...@lst.de]
> Sent: Thursday, July 23, 2020 2:17 AM
> To: Song Bao Hua (Barry Song)
> Cc: h...@lst.de; m.szyprow...@samsung.com; robin.mur...@arm.com;
> w...@kernel.org; ganapatrao.kulka...@cavium.com;
> ca
> -Original Message-
> From: Song Bao Hua (Barry Song)
> Sent: Friday, July 17, 2020 9:06 PM
> To: 'Robin Murphy' ; w...@kernel.org;
> j...@8bytes.org
> Cc: linux-ker...@vger.kernel.org; Linuxarm ;
> linux-arm-ker...@lists.infradead.org; iommu@lists.linux-foundat
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Friday, July 17, 2020 8:55 PM
> To: Song Bao Hua (Barry Song) ; w...@kernel.org;
> j...@8bytes.org
> Cc: linux-ker...@vger.kernel.org; Linuxarm ;
> linux-arm-ker...@lists.infradead.o
> -Original Message-
> From: Song Bao Hua (Barry Song)
> Sent: Sunday, June 28, 2020 11:13 PM
> To: h...@lst.de; m.szyprow...@samsung.com; robin.mur...@arm.com;
> w...@kernel.org; ganapatrao.kulka...@cavium.com;
> catalin.mari...@arm.com
> Cc: iommu@lists.linux-fou
> -Original Message-
> From: netdev-ow...@vger.kernel.org [mailto:netdev-ow...@vger.kernel.org]
> On Behalf Of Christoph Hellwig
> Sent: Wednesday, July 8, 2020 6:50 PM
> To: Robin Murphy
> Cc: Björn Töpel ; Christoph Hellwig ;
> Daniel Borkmann ; maxi...@mellanox.com;
>
> -Original Message-
> From: Will Deacon [mailto:w...@kernel.org]
> Sent: Saturday, July 4, 2020 4:22 AM
> To: Song Bao Hua (Barry Song)
> Cc: h...@lst.de; m.szyprow...@samsung.com; robin.mur...@arm.com;
> linux-arm-ker...@lists.infradead.org; iommu@lists.li
> -Original Message-
> From: Will Deacon [mailto:w...@kernel.org]
> Sent: Saturday, July 4, 2020 4:22 AM
> To: Song Bao Hua (Barry Song)
> Cc: robin.mur...@arm.com; h...@lst.de; m.szyprow...@samsung.com;
> iommu@lists.linux-foundation.org; linux-arm-ker...@l
> -Original Message-
> From: linux-kernel-ow...@vger.kernel.org
> [mailto:linux-kernel-ow...@vger.kernel.org] On Behalf Of Robin Murphy
> Sent: Thursday, June 25, 2020 11:11 PM
> To: Song Bao Hua (Barry Song) ; h...@lst.de;
> m.szyprow...@samsung.com; w...@kernel.org;
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Thursday, June 25, 2020 11:16 PM
> To: Song Bao Hua (Barry Song) ; h...@lst.de;
> m.szyprow...@samsung.com; w...@kernel.org;
> ganapatrao.kulka...@cavium.com; catalin.mari...@arm.com
>
> -Original Message-
> From: Matthias Brugger [mailto:matthias@gmail.com]
> Sent: Monday, June 8, 2020 8:15 AM
> To: Roman Gushchin ; Song Bao Hua (Barry Song)
>
> Cc: catalin.mari...@arm.com; John Garry ;
> linux-ker...@vger.kernel.org; Linuxarm
> -Original Message-
> From: Philip Li [mailto:philip...@intel.com]
> Sent: Saturday, June 6, 2020 3:47 PM
> To: Dan Carpenter
> Cc: Song Bao Hua (Barry Song) ;
> kbu...@lists.01.org; h...@lst.de; m.szyprow...@samsung.com;
> robin.mur...@arm.com; catalin.mari...@ar
> -Original Message-
> From: Dan Carpenter [mailto:dan.carpen...@oracle.com]
> Sent: Thursday, June 4, 2020 11:37 PM
> To: kbu...@lists.01.org; Song Bao Hua (Barry Song)
> ; h...@lst.de; m.szyprow...@samsung.com;
> robin.mur...@arm.com; catalin.mari...@arm.com
> Cc
> >
> > On Tue, Jun 02, 2020 at 05:09:57AM +0000, Song Bao Hua (Barry Song)
> wrote:
> > > > >
> > > > > Platform devices are NUMA? That's crazy, and feels like a total
> > > > > abuse of platform devices and drivers that
> -Original Message-
> From: Greg KH [mailto:gre...@linuxfoundation.org]
> Sent: Tuesday, June 2, 2020 6:11 PM
> To: Song Bao Hua (Barry Song)
> Cc: raf...@kernel.org; iommu@lists.linux-foundation.org;
> linux-arm-ker...@lists.infradead.org; linux-ker...@vger.ke
> >
> > Platform devices are NUMA? That's crazy, and feels like a total abuse
> > of platform devices and drivers that really should belong on a "real"
> > bus.
>
> I am not sure if it is an abuse of platform device. But smmu is a platform
> device,
> drivers/iommu/arm-smmu-v3.c is a platform
> -Original Message-
> From: Greg KH [mailto:gre...@linuxfoundation.org]
> Sent: Tuesday, June 2, 2020 4:24 PM
> To: Song Bao Hua (Barry Song)
> Cc: raf...@kernel.org; iommu@lists.linux-foundation.org;
> linux-arm-ker...@lists.infradead.org; linux-ker...@vger.ke
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Tuesday, June 2, 2020 1:14 AM
> To: Song Bao Hua (Barry Song) ; w...@kernel.org;
> h...@lst.de; m.szyprow...@samsung.com; iommu@lists.linux-foundation.org
> Cc: Linuxa
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ORGANIZER;CN=Song Bao Hua (Barry Song):MAILTO:song.bao@hisilicon.com
ATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN=h...@lst.de
:MAILTO:h
> Subject: Re: arm-smmu-v3 high cpu usage for NVMe
>
> On 20/03/2020 10:41, John Garry wrote:
>
> + Barry, Alexandru
>
> > PerfTop: 85864 irqs/sec kernel:89.6% exact: 0.0% lost:
> > 0/34434 drop:
> > 0/40116 [4000Hz cycles], (all, 96 CPUs)
> >
>
> Subject: Re: Constantly map and unmap of streaming DMA buffers with
> IOMMU backend might cause serious performance problem
>
> On 2020-05-15 09:19, Song Bao Hua wrote:
> [ snip... nice analysis, but ultimately it's still "doing stuff has more
> overhead
> than not
> Subject: Re: Constantly map and unmap of streaming DMA buffers with
> IOMMU backend might cause serious performance problem
>
> On Fri, May 15, 2020 at 01:10:21PM +0100, Robin Murphy wrote:
> >> Meanwhile, for the safety of buffers, lower-layer drivers need to make
> certain the buffers have
Hi Russell & All,
In many DMA streaming map/unmap use cases, lower-layer device drivers
completely have no idea how and when single/sg buffers are allocated and freed
by upper-layer filesystem, network protocol, mm management system etc. So the
only thing device drivers can do is constantly
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