From: Bruce Richardson <bruce.richardson@intel.com>
To: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Cc: Thomas Monjalon <thomas.monjalon@6wind.com>,
David Marchand <david.marchand@6wind.com>,
"dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] virtio: fix wrong features returned for legacy virtio
Date: Mon, 14 Mar 2016 13:54:55 +0000 [thread overview]
Message-ID: <20160314135455.GA24168@bricha3-MOBL3> (raw)
In-Reply-To: <20160314124432.GP979@yliu-dev.sh.intel.com>
On Mon, Mar 14, 2016 at 08:44:32PM +0800, Yuanhan Liu wrote:
> On Mon, Mar 14, 2016 at 10:48:31AM +0000, Bruce Richardson wrote:
> > On Thu, Mar 10, 2016 at 03:50:54PM +0800, Yuanhan Liu wrote:
> > > On Thu, Mar 10, 2016 at 08:43:37AM +0100, David Marchand wrote:
> > > > On Thu, Mar 10, 2016 at 8:01 AM, Yuanhan Liu
> > > > <yuanhan.liu@linux.intel.com> wrote:
> > > > > Declare dst as type uint32_t instead of uint64_t, otherwise, we will get
> > > > > a random upper 32 bit feature bits, as the following io port read reads
> > > > > lower 32 bit only. It could lead a feature bits that include VIRTIO_F_VERSION_1
> > > > > (the 32th bit) for legacy virtio, which is obviously wrong.
> > > > >
> > > > > Fixes: b8f04520ad71 ("virtio: use PCI ioport API")
> > > > >
> > > > > Cc: David Marchand <david.marchand@6wind.com>
> > > > > Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
> > > >
> > > > Argh, good catch.
> > > > Relooked at my patch, this should be the only bug (of this kind ;-)).
> > >
> > > Yes, I also have a check while making this patch.
> > >
> > > --yliu
> > > >
> > > > Reviewed-by: David Marchand <david.marchand@6wind.com>
> > > >
> > > >
> > > > --
> > > > David Marchand
> > Hi,
> >
> > this patch no longer applies to dpdk-next-net/rel_16_04 branch due to changes
> > in legacy_get_features function.
>
> Hi Bruce,
>
> It's a patch based on Thomas' tree. And this patch fixes an regression
> at there, too.
>
> --yliu
>
Ok, thanks for the info.
Thomas, I'm delegating this patch to you in patchwork to apply to your tree.
/Bruce
next prev parent reply other threads:[~2016-03-14 13:55 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-10 7:01 Yuanhan Liu
2016-03-10 7:19 ` Tan, Jianfeng
2016-03-10 7:43 ` David Marchand
2016-03-10 7:50 ` Yuanhan Liu
2016-03-14 10:48 ` Bruce Richardson
2016-03-14 12:44 ` Yuanhan Liu
2016-03-14 13:54 ` Bruce Richardson [this message]
2016-03-14 22:21 ` Thomas Monjalon
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160314135455.GA24168@bricha3-MOBL3 \
--to=bruce.richardson@intel.com \
--cc=david.marchand@6wind.com \
--cc=dev@dpdk.org \
--cc=thomas.monjalon@6wind.com \
--cc=yuanhan.liu@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).