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From: Lance Richardson <lance.richardson@broadcom.com>
To: Thomas Monjalon <thomas@monjalon.net>
Cc: "Burakov, Anatoly" <anatoly.burakov@intel.com>,
	Dmitry Kozlyuk <dmitry.kozliuk@gmail.com>,
	 Narcisa Ana Maria Vasile <navasile@linux.microsoft.com>,
	Dmitry Malloy <dmitrym@microsoft.com>,
	 Pallavi Kadam <pallavi.kadam@intel.com>,
	dev@dpdk.org, dpdk stable <stable@dpdk.org>
Subject: Re: [dpdk-stable] [dpdk-dev] [PATCH v3] eal: fix memory mapping for 32-bit targets
Date: Mon, 10 May 2021 12:04:31 -0400
Message-ID: <CADyeNEBdiAkXSGW6RNWdgOXv=5=CAypFUdUTCGjt-TwNuZEn-g@mail.gmail.com> (raw)
In-Reply-To: <4580427.4aQfPY00Ab@thomas>

[-- Attachment #1: Type: text/plain, Size: 1306 bytes --]

On Mon, May 10, 2021 at 11:55 AM Thomas Monjalon <thomas@monjalon.net>
wrote:

> 10/05/2021 17:31, Burakov, Anatoly:
> > On 10-May-21 1:42 PM, Thomas Monjalon wrote:
> > > +Cc Anatoly
> > >
> > > 08/05/2021 16:27, Lance Richardson:
> > >> For 32-bit targets, size_t is normally a 32-bit type and
> > >> does not have sufficient range to represent 64-bit offsets
> > >> that can are needed when mapping PCI addresses. Use uint64_t
> > >> instead.
> > >>
> > >> Found when attempting to run 32-bit Linux dpdk-testpmd
> > >> using VFIO driver:
> > >>
> > >>      EAL: pci_map_resource(): cannot map resource(63, 0xc0010000, \
> > >>      0x200000, 0x20000000000): Invalid argument ((nil))
> > >>
> > >> Fixes: c4b89ecb64ea ("eal: introduce memory management wrappers")
> > >> Cc: stable@dpdk.org
> > >> Signed-off-by: Lance Richardson <lance.richardson@broadcom.com>
> > >> ---
> >
> > LGTM, although the Fixes: tag is probably wrong because IIRC previous
> > versions did have the same issue.
>
> What should be the right Fixes tag Anatoly?
>

I think this would be more appropriate (prior to this commit,
pci_map_resource()
called mmap() directly with off_t offset, with this commit offset was
narrowed
to size_t before calling mmap()):

Fixes: 2fd3567e5425 ("pci: use OS generic memory mapping functions")

  reply	other threads:[~2021-05-10 16:04 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-07 18:10 [dpdk-stable] [PATCH] " Lance Richardson
2021-05-07 18:50 ` Lance Richardson
2021-05-07 18:55   ` Lance Richardson
2021-05-07 19:06 ` [dpdk-stable] [PATCH v2] " Lance Richardson
2021-05-07 20:51   ` Dmitry Kozlyuk
2021-05-07 21:35     ` Lance Richardson
2021-05-08 14:12 ` [dpdk-stable] [PATCH] " Lance Richardson
2021-05-08 14:27 ` [dpdk-stable] [PATCH v3] " Lance Richardson
2021-05-10 12:42   ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
2021-05-10 15:31     ` Burakov, Anatoly
2021-05-10 15:55       ` Thomas Monjalon
2021-05-10 16:04         ` Lance Richardson [this message]
2021-05-11  7:55           ` Thomas Monjalon
2021-05-11 20:45       ` Thomas Monjalon
2021-05-11  8:17   ` Thomas Monjalon
2021-05-11 13:33     ` Lance Richardson
2021-05-11 14:45 ` [dpdk-stable] [PATCH v4] " Lance Richardson
2021-05-11 15:56   ` Lance Richardson
2021-05-11 16:08     ` Dmitry Kozlyuk
2021-05-11 20:45       ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon

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