From: "Xia, Chenbo" <chenbo.xia@intel.com>
To: "Yigit, Ferruh" <ferruh.yigit@intel.com>,
"Burakov, Anatoly" <anatoly.burakov@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v1 1/2] vfio: make API return values consistent
Date: Wed, 22 Sep 2021 11:30:50 +0000 [thread overview]
Message-ID: <MN2PR11MB40638EECECAE8942E1C7DE859CA29@MN2PR11MB4063.namprd11.prod.outlook.com> (raw)
In-Reply-To: <fa84b4ae-021d-b50a-0343-8acd8abab440@intel.com>
> -----Original Message-----
> From: Yigit, Ferruh <ferruh.yigit@intel.com>
> Sent: Wednesday, September 22, 2021 5:27 PM
> To: Xia, Chenbo <chenbo.xia@intel.com>; Burakov, Anatoly
> <anatoly.burakov@intel.com>; dev@dpdk.org
> Subject: Re: [dpdk-dev] [PATCH v1 1/2] vfio: make API return values consistent
>
> On 9/22/2021 4:30 AM, Xia, Chenbo wrote:
> > Hi Anatoly,
> >
> >> -----Original Message-----
> >> From: dev <dev-bounces@dpdk.org> On Behalf Of Anatoly Burakov
> >> Sent: Thursday, September 16, 2021 6:37 PM
> >> To: dev@dpdk.org
> >> Subject: [dpdk-dev] [PATCH v1 1/2] vfio: make API return values consistent
> >>
> >> Currently, when VFIO support is not compiled, FreeBSD and Linux have
> >> different return values. Fix Linux implementation to follow FreeBSD one.
> >>
> >> Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com>
> >> ---
> >>
> >> Notes:
> >> Current minimum support Linux kernel is 4.4, and Meson build file sets
> the
> >
> > Do you mean currently DPDK support linux >= 4.4? I am not aware of this,
> could you
> > show me where it is defined?
> >
>
> https://git.dpdk.org/dpdk/tree/doc/guides/linux_gsg/sys_reqs.rst?h=v21.08#n124
>
> Commit d2feae68bf30 ("doc: update minimum supported Linux kernel")
Thanks Ferruh!
About removing the fallback or not, if we decide to remove, maybe for other files
that check linux kernel version, we also need to change some check because we are
assuming kernel version >= 4.4 here. If that's a strong requirement, I'll vote for
yes...
/Chenbo
>
> > And do we need backport? As 'return -1' does not align with the API doxygen.
> >
> > Thanks,
> > Chenbo
> >
> >> RTE_EAL_VFIO config option to `true` simply because we are compiling
> for
> >> Linux.
> >> So, it looks like VFIO support is pretty much assumed on Linux, so i
> think
> >> we
> >> can safely drop the fallback dummy implementation from Linux altogether?
> >>
> >> lib/eal/linux/eal_vfio.c | 6 +++---
> >> 1 file changed, 3 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/lib/eal/linux/eal_vfio.c b/lib/eal/linux/eal_vfio.c
> >> index 25add2fa5d..b9e4d3ad3c 100644
> >> --- a/lib/eal/linux/eal_vfio.c
> >> +++ b/lib/eal/linux/eal_vfio.c
> >> @@ -2111,19 +2111,19 @@ rte_vfio_enable(__rte_unused const char *modname)
> >> int
> >> rte_vfio_is_enabled(__rte_unused const char *modname)
> >> {
> >> - return -1;
> >> + return 0;
> >> }
> >>
> >> int
> >> rte_vfio_noiommu_is_enabled(void)
> >> {
> >> - return -1;
> >> + return 0;
> >> }
> >>
> >> int
> >> rte_vfio_clear_group(__rte_unused int vfio_group_fd)
> >> {
> >> - return -1;
> >> + return 0;
> >> }
> >>
> >> int
> >> --
> >> 2.25.1
> >
next prev parent reply other threads:[~2021-09-22 11:30 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-16 10:36 Anatoly Burakov
2021-09-16 10:36 ` [dpdk-dev] [PATCH v1 2/2] vfio: add errno on unsupported platforms Anatoly Burakov
2021-09-16 10:39 ` Bruce Richardson
2021-09-22 3:31 ` Xia, Chenbo
2021-09-22 3:30 ` [dpdk-dev] [PATCH v1 1/2] vfio: make API return values consistent Xia, Chenbo
2021-09-22 9:26 ` Ferruh Yigit
2021-09-22 11:30 ` Xia, Chenbo [this message]
2021-10-28 8:21 ` David Marchand
2021-10-28 10:29 ` Burakov, Anatoly
2021-10-28 11:11 ` Xia, Chenbo
2021-10-28 11:32 ` Ferruh Yigit
2021-10-28 13:00 ` Burakov, Anatoly
2021-10-28 14:53 ` Thomas Monjalon
2021-10-28 15:40 ` Burakov, Anatoly
2021-10-28 16:38 ` Stephen Hemminger
2021-10-28 13:49 ` [dpdk-dev] [PATCH v2 1/4] vfio: drop fallback Linux implementation Anatoly Burakov
2021-10-28 13:49 ` [dpdk-dev] [PATCH v2 2/4] vfio: fix wrong return value for FreeBSD Anatoly Burakov
2021-10-28 13:49 ` [dpdk-dev] [PATCH v2 3/4] vfio: fix documentation to match intended behavior Anatoly Burakov
2021-10-28 13:49 ` [dpdk-dev] [PATCH v2 4/4] vfio: add errno on unsupported platforms Anatoly Burakov
2021-10-28 14:13 ` Burakov, Anatoly
2021-10-28 14:15 ` [dpdk-dev] [PATCH v3 1/4] vfio: drop fallback Linux implementation Anatoly Burakov
2021-10-28 14:15 ` [dpdk-dev] [PATCH v3 2/4] vfio: fix wrong return value for FreeBSD Anatoly Burakov
2021-11-05 2:50 ` Xia, Chenbo
2021-10-28 14:15 ` [dpdk-dev] [PATCH v3 3/4] vfio: fix documentation to match intended behavior Anatoly Burakov
2021-11-05 2:57 ` [dpdk-dev] [dpdk-stable] " Xia, Chenbo
2021-10-28 14:15 ` [dpdk-dev] [PATCH v3 4/4] vfio: add errno on unsupported platforms Anatoly Burakov
2021-11-08 15:55 ` [dpdk-dev] [dpdk-stable] " David Marchand
2021-11-01 6:27 ` [dpdk-dev] [PATCH v3 1/4] vfio: drop fallback Linux implementation Xia, Chenbo
2021-11-01 13:57 ` Burakov, Anatoly
2021-11-05 2:48 ` Xia, Chenbo
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