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From: Feng Li <lifeng1519@gmail.com>
To: "Burakov, Anatoly" <anatoly.burakov@intel.com>
Cc: David Marchand <david.marchand@redhat.com>,
	Li Feng <fengli@smartx.com>,
	 Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>,
	Bruce Richardson <bruce.richardson@intel.com>,
	 dev <dev@dpdk.org>, Kyle Zhang <kyle@smartx.com>,
	Yang Fan <fanyang@smartx.com>
Subject: Re: [dpdk-dev] [PATCH] librte_eal: add APIs to speedup virt2iova/phys
Date: Tue, 6 Apr 2021 18:40:07 +0800
Message-ID: <CAEK8JBA2m9sOkMVvum7qUmbr45=CiOxSijDeR7CF=N1pa42MMw@mail.gmail.com> (raw)
In-Reply-To: <efe667fe-f419-d7ed-70e2-e777adc97c9f@intel.com>

On Thu, Apr 1, 2021 at 6:39 PM Burakov, Anatoly
<anatoly.burakov@intel.com> wrote:
>
> On 25-Mar-21 1:32 PM, David Marchand wrote:
> > Hello,
> >
> > On Mon, Apr 20, 2020 at 4:13 PM Li Feng <fengli@smartx.com> wrote:
> >>
> >> Cool, thank you, Anatoly and Kozlyuk.
> >>
> >> I haven't found how Windows implements the rte_mem_virt2phy.
> >>
> >> Using an opaque structure pointer as the first argument is a good idea.
> >
> > I pinged about this patch status 6 months ago but got no reply.
> > Trying again in public.
> >
> >  From the thread, I understand that at best it would have to be done differently.
> >
>
> I would agree with the latter. Like i said in my original response, the
> fd-less API's are already on the very of what's acceptable and in the
> perfect world we wouldn't have them in the first place, and i don't like
> the fact that they exist and would wholly discourage their use, mainly
> because of very confusing semantics of real physical address vs. DPDK's
> IOVA vs. user IOVA, and potential for errors due to trying to resolve an
> IOVA address of something that doesn't even have it.
>
> Given the above, I certainly don't like the idea of building on top of
> these API's.

Got it. Let's drop it.

>
> --
> Thanks,
> Anatoly

  reply	other threads:[~2021-04-07  6:50 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-20 11:09 Li Feng
2020-04-20 12:16 ` Burakov, Anatoly
2020-04-20 13:07   ` Dmitry Kozlyuk
2020-04-20 14:13     ` Li Feng
2021-03-25 13:32       ` David Marchand
2021-03-29  6:26         ` Li Feng
2021-04-01 10:38         ` Burakov, Anatoly
2021-04-06 10:40           ` Feng Li [this message]
2021-04-06 11:23             ` David Marchand

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