Re: [PATCH v5 01/11] iommu/vt-d: add wrapper functions for page allocations

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Pasha,

> -----Original Message-----
> From: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
> Sent: Thursday, April 4, 2024 7:26 PM
> To: Linu Cherian <lcherian@xxxxxxxxxxx>
> Cc: akpm@xxxxxxxxxxxxxxxxxxxx; alim.akhtar@xxxxxxxxxxx;
> alyssa@xxxxxxxxxxxxx; asahi@xxxxxxxxxxxxxxx; baolu.lu@xxxxxxxxxxxxxxx;
> bhelgaas@xxxxxxxxxx; cgroups@xxxxxxxxxxxxxxx; corbet@xxxxxxx;
> david@xxxxxxxxxx; dwmw2@xxxxxxxxxxxxx; hannes@xxxxxxxxxxx;
> heiko@xxxxxxxxx; iommu@xxxxxxxxxxxxxxx; jernej.skrabec@xxxxxxxxx;
> jonathanh@xxxxxxxxxx; joro@xxxxxxxxxx; krzysztof.kozlowski@xxxxxxxxxx;
> linux-doc@xxxxxxxxxxxxxxx; linux-fsdevel@xxxxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx; linux-mm@xxxxxxxxx; linux-
> rockchip@xxxxxxxxxxxxxxxxxxx; linux-samsung-soc@xxxxxxxxxxxxxxx; linux-
> sunxi@xxxxxxxxxxxxxxx; linux-tegra@xxxxxxxxxxxxxxx;
> lizefan.x@xxxxxxxxxxxxx; marcan@xxxxxxxxx; mhiramat@xxxxxxxxxx;
> m.szyprowski@xxxxxxxxxxx; paulmck@xxxxxxxxxx; rdunlap@xxxxxxxxxxxxx;
> robin.murphy@xxxxxxx; samuel@xxxxxxxxxxxx;
> suravee.suthikulpanit@xxxxxxx; sven@xxxxxxxxxxxxx;
> thierry.reding@xxxxxxxxx; tj@xxxxxxxxxx; tomas.mudrunka@xxxxxxxxx;
> vdumpa@xxxxxxxxxx; wens@xxxxxxxx; will@xxxxxxxxxx; yu-
> cheng.yu@xxxxxxxxx; rientjes@xxxxxxxxxx; bagasdotme@xxxxxxxxx;
> mkoutny@xxxxxxxx
> Subject: [EXTERNAL] Re: [PATCH v5 01/11] iommu/vt-d: add wrapper
> functions for page allocations
> 
> > Few minor nits.
> 
> Hi Linu,
> 
> Thank you for taking a look at this patch, my replies below.
> 
> > > +/*
> > > + * All page allocations that should be reported to as
> > > +"iommu-pagetables" to
> > > + * userspace must use on of the functions below.  This includes
> > > +allocations of
> > > + * page-tables and other per-iommu_domain configuration structures.
> >
> > /s/use on/use one/?
> 
> I will correct in the next version (if there is going to be one).
> 
> > > + *
> > > + * This is necessary for the proper accounting as IOMMU state can
> > > + be rather
> > > + * large, i.e. multiple gigabytes in size.
> > > + */
> > > +
> > > +/**
> > > + * __iommu_alloc_pages - allocate a zeroed page of a given order.
> > > + * @gfp: buddy allocator flags
> >
> > Shall we keep the comments generic here(avoid reference to allocator
> > algo)  ?
> 
> There are no references to allocator algorithm. I specify the zero page
> because this function adds __GFP_ZERO. The order and gfp arguments are
> provided by the caller, therefore, should be mentioned.

Just meant to remove the mention of "buddy allocator" in the above comments if I was not clear.
Ie. "* @gfp:  allocator flags"  instead of "* @gfp: buddy allocator flags" since that is allocator specific.

Thanks
Linu Cherian.




[Index of Archives]     [Linux Ext4 Filesystem]     [Union Filesystem]     [Filesystem Testing]     [Ceph Users]     [Ecryptfs]     [NTFS 3]     [AutoFS]     [Kernel Newbies]     [Share Photos]     [Security]     [Netfilter]     [Bugtraq]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux Cachefs]     [Reiser Filesystem]     [Linux RAID]     [NTFS 3]     [Samba]     [Device Mapper]     [CEPH Development]

  Powered by Linux