From: Thomas Monjalon <thomas@monjalon.net>
To: Alexey Kardashevskiy <aik@ozlabs.ru>
Cc: "Burakov, Anatoly" <anatoly.burakov@intel.com>, dev@dpdk.org
Subject: Re: [PATCH dpdk v2] vfio/ppc64/spapr: Warn if DMA window was created at unexpected offset
Date: Wed, 18 Oct 2017 08:24:34 +0200 [thread overview]
Message-ID: <3509725.R4iCQoWzDS@xps> (raw)
In-Reply-To: <65996a36-e64e-248c-d22b-cd9db1ba5e3f@ozlabs.ru>
18/10/2017 07:11, Alexey Kardashevskiy:
> On 18/10/17 03:13, Thomas Monjalon wrote:
> > 28/04/2017 13:19, Burakov, Anatoly:
> >> From: Alexey Kardashevskiy
> >>> VFIO_IOMMU_SPAPR_TCE_CREATE ioctl() returns the actual bus address for
> >>> just created DMA window. It happens to start from zero because the default
> >>> window is removed (leaving no windows) and new window starts from zero.
> >>> However this is not guaranteed and a new window may start from another
> >>> address, this adds a check and an error message.
> >>>
> >>>
> >>> Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
> >>> ---
> >>> Changes:
> >>> v2:
> >>> * this just prints warning and fails instead of incorrectly changing IOVA
> >>> addresses
> >>> ---
> >>
> >> Hi Alexey,
> >>
> >> There are some compile failures with this patch. You'll probably want to replace %lx with PRIx64 or similar :)
> >>
> >> I would argue that just saying "DMA offsets other than zero are not supported" will be sufficient and will make error message less confusing. Up to you though.
> >
> > Please, can we progress on this patch?
> > Is it still a relevant patch?
>
> Nope, http://dpdk.org/browse/dpdk/commit/?id=ed1e7e576be219e1e has the
> warning, this is enough really.
OK, I've marked it as superseded in patchwork.
Thanks
prev parent reply other threads:[~2017-10-18 6:24 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-26 8:09 [PATCH dpdk v2] vfio/ppc64/spapr: Warn if DMA window was created at unexpected offset Alexey Kardashevskiy
2017-04-28 11:19 ` Burakov, Anatoly
2017-10-17 16:13 ` Thomas Monjalon
2017-10-18 5:11 ` Alexey Kardashevskiy
2017-10-18 6:24 ` Thomas Monjalon [this message]
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