From: Jacob Pan <jacob.jun.pan@linux.intel.com>
To: Andriy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: iommu@lists.linux-foundation.org,
LKML <linux-kernel@vger.kernel.org>,
Joerg Roedel <joro@8bytes.org>,
David Woodhouse <dwmw2@infradead.org>,
Alex Williamson <alex.williamson@redhat.com>,
Jean-Philippe Brucker <jean-philippe.brucker@arm.com>,
Yi Liu <yi.l.liu@intel.com>, "Tian, Kevin" <kevin.tian@intel.com>,
Raj Ashok <ashok.raj@intel.com>,
Christoph Hellwig <hch@infradead.org>,
Lu Baolu <baolu.lu@linux.intel.com>,
jacob.jun.pan@linux.intel.com
Subject: Re: [PATCH 09/18] iommu/vt-d: Enlightened PASID allocation
Date: Tue, 9 Apr 2019 09:34:13 -0700 [thread overview]
Message-ID: <20190409093413.603b5333@jacob-builder> (raw)
In-Reply-To: <20190409100859.GF9224@smile.fi.intel.com>
On Tue, 9 Apr 2019 13:08:59 +0300
Andriy Shevchenko <andriy.shevchenko@linux.intel.com> wrote:
> On Mon, Apr 08, 2019 at 04:59:24PM -0700, Jacob Pan wrote:
> > From: Lu Baolu <baolu.lu@linux.intel.com>
> >
> > If Intel IOMMU runs in caching mode, a.k.a. virtual IOMMU, the
> > IOMMU driver should rely on the emulation software to allocate
> > and free PASID IDs. The Intel vt-d spec revision 3.0 defines a
> > register set to support this. This includes a capability register,
> > a virtual command register and a virtual response register. Refer
> > to section 10.4.42, 10.4.43, 10.4.44 for more information.
> >
> > This patch adds the enlightened PASID allocation/free interfaces
> > via the virtual command register.
>
> > + pr_debug("vcmd alloc pasid\n");
>
> Perhaps tracepoints should be in use?
> OTOH we have function tracer, so, this message in any case is a noise.
> And this is applicable to other similar cases.
>
Agreed, I added that for debug purpose.
Thanks,
Jacob
next prev parent reply other threads:[~2019-04-09 16:31 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-08 23:59 [PATCH 00/18] Shared virtual address IOMMU and VT-d support Jacob Pan
2019-04-08 23:59 ` [PATCH 01/18] drivers core: Add I/O ASID allocator Jacob Pan
2019-04-09 10:00 ` Andriy Shevchenko
2019-04-09 10:04 ` Christoph Hellwig
2019-04-09 10:30 ` Andriy Shevchenko
2019-04-09 14:53 ` Paul E. McKenney
2019-04-09 15:21 ` Andriy Shevchenko
2019-04-09 22:08 ` Paul E. McKenney
2019-04-08 23:59 ` [PATCH 02/18] ioasid: Add custom IOASID allocator Jacob Pan
2019-04-15 18:53 ` Alex Williamson
2019-04-15 22:45 ` Jacob Pan
2019-04-08 23:59 ` [PATCH 03/18] ioasid: Convert ioasid_idr to XArray Jacob Pan
2019-04-08 23:59 ` [PATCH 04/18] driver core: add per device iommu param Jacob Pan
2019-04-08 23:59 ` [PATCH 05/18] iommu: introduce device fault data Jacob Pan
2019-04-09 10:03 ` Andriy Shevchenko
2019-04-09 16:44 ` Jacob Pan
2019-04-08 23:59 ` [PATCH 06/18] iommu: introduce device fault report API Jacob Pan
2019-04-08 23:59 ` [PATCH 07/18] iommu: Introduce attach/detach_pasid_table API Jacob Pan
2019-04-08 23:59 ` [PATCH 08/18] iommu: Introduce cache_invalidate API Jacob Pan
2019-04-09 10:07 ` Andriy Shevchenko
2019-04-09 16:43 ` Jacob Pan
2019-04-09 17:37 ` Andriy Shevchenko
2019-04-10 21:21 ` Jacob Pan
2019-04-11 10:02 ` Andriy Shevchenko
2019-04-08 23:59 ` [PATCH 09/18] iommu/vt-d: Enlightened PASID allocation Jacob Pan
2019-04-09 10:08 ` Andriy Shevchenko
2019-04-09 16:34 ` Jacob Pan [this message]
2019-04-08 23:59 ` [PATCH 10/18] iommu/vt-d: Add custom allocator for IOASID Jacob Pan
2019-04-15 20:37 ` Alex Williamson
2019-04-15 23:10 ` Jacob Pan
2019-04-18 15:36 ` Jean-Philippe Brucker
2019-04-19 4:29 ` Jacob Pan
2019-04-23 10:53 ` Jean-Philippe Brucker
2019-04-16 15:30 ` Jacob Pan
2019-04-08 23:59 ` [PATCH 11/18] iommu/vt-d: Replace Intel specific PASID allocator with IOASID Jacob Pan
2019-04-08 23:59 ` [PATCH 12/18] iommu: Add guest PASID bind function Jacob Pan
2019-04-08 23:59 ` [PATCH 13/18] iommu/vt-d: Move domain helper to header Jacob Pan
2019-04-08 23:59 ` [PATCH 14/18] iommu/vt-d: Add nested translation support Jacob Pan
2019-04-08 23:59 ` [PATCH 15/18] iommu/vt-d: Add bind guest PASID support Jacob Pan
2019-04-09 14:52 ` Andriy Shevchenko
2019-04-08 23:59 ` [PATCH 16/18] iommu: add max num of cache and granu types Jacob Pan
2019-04-09 14:53 ` Andriy Shevchenko
2019-04-08 23:59 ` [PATCH 17/18] iommu/vt-d: Support flushing more translation cache types Jacob Pan
2019-04-08 23:59 ` [PATCH 18/18] iommu/vt-d: Add svm/sva invalidate function Jacob Pan
2019-04-09 14:57 ` Andriy Shevchenko
2019-04-09 17:43 ` Jacob Pan
2019-04-09 9:56 ` [PATCH 00/18] Shared virtual address IOMMU and VT-d support Andriy Shevchenko
2019-04-09 16:33 ` Jacob Pan
2019-04-15 17:25 ` Jacob Pan
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