From: "Liu, Yi L" <yi.l.liu@intel.com>
To: Will Deacon <will@kernel.org>
Cc: Lu Baolu <baolu.lu@linux.intel.com>,
"joro@8bytes.org" <joro@8bytes.org>,
"Tian, Kevin" <kevin.tian@intel.com>,
"jacob.jun.pan@linux.intel.com" <jacob.jun.pan@linux.intel.com>,
"Raj, Ashok" <ashok.raj@intel.com>,
"Tian, Jun J" <jun.j.tian@intel.com>,
"Sun, Yi Y" <yi.y.sun@intel.com>,
"iommu@lists.linux-foundation.org"
<iommu@lists.linux-foundation.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [PATCH v3 3/3] iommu/vt-d: Fix ineffective devTLB invalidation for subdevices
Date: Thu, 7 Jan 2021 05:22:12 +0000 [thread overview]
Message-ID: <DM5PR11MB1435DA1E9AEE9F25AB06ED9AC3AF0@DM5PR11MB1435.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20210105172348.GA12032@willie-the-truck>
Hi Will,
> From: Will Deacon <will@kernel.org>
> Sent: Wednesday, January 6, 2021 1:24 AM
>
> On Tue, Jan 05, 2021 at 05:50:22AM +0000, Liu, Yi L wrote:
> > > > +static void __iommu_flush_dev_iotlb(struct device_domain_info
> *info,
> > > > + u64 addr, unsigned int mask)
> > > > +{
> > > > + u16 sid, qdep;
> > > > +
> > > > + if (!info || !info->ats_enabled)
> > > > + return;
> > > > +
> > > > + sid = info->bus << 8 | info->devfn;
> > > > + qdep = info->ats_qdep;
> > > > + qi_flush_dev_iotlb(info->iommu, sid, info->pfsid,
> > > > + qdep, addr, mask);
> > > > +}
> > > > +
> > > > static void iommu_flush_dev_iotlb(struct dmar_domain *domain,
> > > > u64 addr, unsigned mask)
> > > > {
> > > > - u16 sid, qdep;
> > > > unsigned long flags;
> > > > struct device_domain_info *info;
> > > > + struct subdev_domain_info *sinfo;
> > > >
> > > > if (!domain->has_iotlb_device)
> > > > return;
> > > >
> > > > spin_lock_irqsave(&device_domain_lock, flags);
> > > > - list_for_each_entry(info, &domain->devices, link) {
> > > > - if (!info->ats_enabled)
> > > > - continue;
> > > > + list_for_each_entry(info, &domain->devices, link)
> > > > + __iommu_flush_dev_iotlb(info, addr, mask);
> > > >
> > > > - sid = info->bus << 8 | info->devfn;
> > > > - qdep = info->ats_qdep;
> > > > - qi_flush_dev_iotlb(info->iommu, sid, info->pfsid,
> > > > - qdep, addr, mask);
> > > > + list_for_each_entry(sinfo, &domain->subdevices, link_domain) {
> > > > + __iommu_flush_dev_iotlb(get_domain_info(sinfo->pdev),
> > > > + addr, mask);
> > > > }
> > >
> > > Nit:
> > > list_for_each_entry(sinfo, &domain->subdevices, link_domain) {
> > > info = get_domain_info(sinfo->pdev);
> > > __iommu_flush_dev_iotlb(info, addr, mask);
> > > }
> >
> > you are right. this should be better.
>
> Please can you post a v4, with Lu's acks and the issue reported by Dan fixed
> too?
sure, will send out later.
Regards,
Yi Liu
> Thanks,
>
> Will
prev parent reply other threads:[~2021-01-07 5:23 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-29 3:25 [PATCH v3 0/3] iommu/vt-d: Misc fixes on scalable mode Liu Yi L
2020-12-29 3:25 ` [PATCH v3 1/3] iommu/vt-d: Move intel_iommu info from struct intel_svm to struct intel_svm_dev Liu Yi L
2020-12-29 8:34 ` Lu Baolu
2020-12-29 3:25 ` [PATCH v3 2/3] iommu/vt-d: Track device aux-attach with subdevice_domain_info Liu Yi L
2020-12-29 8:38 ` Lu Baolu
2021-01-05 5:58 ` Liu, Yi L
2020-12-29 3:25 ` [PATCH v3 3/3] iommu/vt-d: Fix ineffective devTLB invalidation for subdevices Liu Yi L
2020-12-29 8:41 ` Lu Baolu
2021-01-05 5:50 ` Liu, Yi L
2021-01-05 17:23 ` Will Deacon
2021-01-07 5:22 ` Liu, Yi L [this message]
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=DM5PR11MB1435DA1E9AEE9F25AB06ED9AC3AF0@DM5PR11MB1435.namprd11.prod.outlook.com \
--to=yi.l.liu@intel.com \
--cc=ashok.raj@intel.com \
--cc=baolu.lu@linux.intel.com \
--cc=iommu@lists.linux-foundation.org \
--cc=jacob.jun.pan@linux.intel.com \
--cc=joro@8bytes.org \
--cc=jun.j.tian@intel.com \
--cc=kevin.tian@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=will@kernel.org \
--cc=yi.y.sun@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).