Subject: Re: [PATCH] vfio: do not coalesce DMA mappings
Hi Xuan,
On 7/4/2023 1:36 PM, Ding, Xuan wrote:
Hi Nipun,
-Original Message-
From: Gupta, Nipun
Sent: Tuesday, July 4, 2023 2:54 PM
To: Ding, Xuan ; dev@dpdk.org;
tho...@monjalon.net; Burakov, Anatoly ;
Yigit, Ferruh ; David Marchand
On 7/4/2023 7:39 PM, Thomas Monjalon wrote:
04/07/2023 11:23, Gupta, Nipun:
On 7/4/2023 1:36 PM, Ding, Xuan wrote:
From: Gupta, Nipun
From: Ding, Xuan
From: Ding, Xuan
From: Nipun Gupta
Hi Xuan,
Thanks for pointing out the issue and figuring out the patch which
introduced this. If yo
g, Xuan ; dev@dpdk.org;
> >> tho...@monjalon.net; Burakov, Anatoly ;
> >> Yigit, Ferruh ; David Marchand
> >>
> >> Cc: Agarwal, Nikhil ; He, Xingguang
> >> ; Ling, WeiX
> >> Subject: RE: [PATCH] vfio: do not coalesce DMA mappings
> >&g
04/07/2023 11:23, Gupta, Nipun:
> On 7/4/2023 1:36 PM, Ding, Xuan wrote:
>> From: Gupta, Nipun
>>> From: Ding, Xuan
From: Ding, Xuan
> From: Nipun Gupta
> > Hi Xuan,
> >
> > Thanks for pointing out the issue and figuring out the patch which
> > introduced this. If you ha
Subject: RE: [PATCH] vfio: do not coalesce DMA mappings
Hi Xuan,
Please see inline.
-Original Message-
From: Ding, Xuan
Sent: Tuesday, July 4, 2023 10:43 AM
To: Gupta, Nipun ; dev@dpdk.org;
tho...@monjalon.net; Burakov, Anatoly ;
Yigit, Ferruh
Cc: Agarwal, Nikhil ; He, Xingguang
ov, Anatoly ;
> > Yigit, Ferruh
> > Cc: Agarwal, Nikhil ; He, Xingguang
> > ; Ling, WeiX
> > Subject: RE: [PATCH] vfio: do not coalesce DMA mappings
> >
> > Hi Nipun,
> >
> > > -Original Message-
> > > From: Ding, Xuan
> >
erruh.yi...@amd.com
> > Cc: nikhil.agar...@amd.com; He, Xingguang ; Ling,
> > WeiX
> > Subject: RE: [PATCH] vfio: do not coalesce DMA mappings
> >
> > Hi Nipun,
> >
> > Replies are inline.
> >
> > > -Original Message-
> > > Fro
v, Anatoly ;
> > ferruh.yi...@amd.com
> > Cc: nikhil.agar...@amd.com; He, Xingguang ;
> > Ling, WeiX
> > Subject: Re: [PATCH] vfio: do not coalesce DMA mappings
> >
> > Hi Xuan,
> >
> > Thanks for pointing out the issue and figuring out the patch which
&g
> WeiX
> Subject: Re: [PATCH] vfio: do not coalesce DMA mappings
>
> Hi Xuan,
>
> Thanks for pointing out the issue and figuring out the patch which introduced
> this. If you have answers to below queries, please let me know:
>
> Is there any other test cases which tests &q
@monjalon.net; Burakov, Anatoly
; ferruh.yi...@amd.com
Cc: nikhil.agar...@amd.com; Nipun Gupta
Subject: [PATCH] vfio: do not coalesce DMA mappings
At the cleanup time when dma unmap is done, linux kernel does not allow
unmap of individual segments which were coalesced together while creating
the DM
@dpdk.org; tho...@monjalon.net; Burakov, Anatoly
> ; ferruh.yi...@amd.com
> Cc: nikhil.agar...@amd.com; Nipun Gupta
> Subject: [PATCH] vfio: do not coalesce DMA mappings
>
> At the cleanup time when dma unmap is done, linux kernel does not allow
> unmap of individual segments whi
At the cleanup time when dma unmap is done, linux kernel
does not allow unmap of individual segments which were
coalesced together while creating the DMA map for type1 IOMMU
mappings. So, this change updates the mapping of the memory
segments(hugepages) on a per-page basis.
Signed-off-by: Nipun Gu
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