From: Jacob Pan <jacob.jun.pan@linux.intel.com>
To: "Tian, Kevin" <kevin.tian@intel.com>
Cc: "iommu@lists.linux-foundation.org"
<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@linaro.com>,
"Liu, Yi L" <yi.l.liu@intel.com>,
"Raj, Ashok" <ashok.raj@intel.com>,
Christoph Hellwig <hch@infradead.org>,
Lu Baolu <baolu.lu@linux.intel.com>,
Jonathan Cameron <jic23@kernel.org>,
Eric Auger <eric.auger@redhat.com>,
jacob.jun.pan@linux.intel.com
Subject: Re: [PATCH v7 06/11] iommu/vt-d: Avoid duplicated code for PASID setup
Date: Mon, 28 Oct 2019 15:41:40 -0700 [thread overview]
Message-ID: <20191028154140.313a1fe9@jacob-builder> (raw)
In-Reply-To: <AADFC41AFE54684AB9EE6CBC0274A5D19D5CDCA0@SHSMSX104.ccr.corp.intel.com>
On Fri, 25 Oct 2019 06:42:54 +0000
"Tian, Kevin" <kevin.tian@intel.com> wrote:
> > From: Jacob Pan [mailto:jacob.jun.pan@linux.intel.com]
> > Sent: Friday, October 25, 2019 3:55 AM
> >
> > After each setup for PASID entry, related translation caches must be
> > flushed.
> > We can combine duplicated code into one function which is less error
> > prone.
> >
> > Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
>
> similarly, it doesn't need to be in this series.
Technically true, it is in this series so that we can use the combined
function.
>
> > ---
> > drivers/iommu/intel-pasid.c | 48
> > +++++++++++++++++--------------------------- -
> > 1 file changed, 18 insertions(+), 30 deletions(-)
> >
> > diff --git a/drivers/iommu/intel-pasid.c
> > b/drivers/iommu/intel-pasid.c index e79d680fe300..ffbd416ed3b8
> > 100644 --- a/drivers/iommu/intel-pasid.c
> > +++ b/drivers/iommu/intel-pasid.c
> > @@ -485,6 +485,21 @@ void intel_pasid_tear_down_entry(struct
> > intel_iommu *iommu,
> > devtlb_invalidation_with_pasid(iommu, dev, pasid);
> > }
> >
> > +static void pasid_flush_caches(struct intel_iommu *iommu,
> > + struct pasid_entry *pte,
> > + int pasid, u16 did)
> > +{
> > + if (!ecap_coherent(iommu->ecap))
> > + clflush_cache_range(pte, sizeof(*pte));
> > +
> > + if (cap_caching_mode(iommu->cap)) {
> > + pasid_cache_invalidation_with_pasid(iommu, did,
> > pasid);
> > + iotlb_invalidation_with_pasid(iommu, did, pasid);
> > + } else {
> > + iommu_flush_write_buffer(iommu);
> > + }
> > +}
> > +
> > /*
> > * Set up the scalable mode pasid table entry for first only
> > * translation type.
> > @@ -530,16 +545,7 @@ int intel_pasid_setup_first_level(struct
> > intel_iommu *iommu,
> > /* Setup Present and PASID Granular Transfer Type: */
> > pasid_set_translation_type(pte, 1);
> > pasid_set_present(pte);
> > -
> > - if (!ecap_coherent(iommu->ecap))
> > - clflush_cache_range(pte, sizeof(*pte));
> > -
> > - if (cap_caching_mode(iommu->cap)) {
> > - pasid_cache_invalidation_with_pasid(iommu, did,
> > pasid);
> > - iotlb_invalidation_with_pasid(iommu, did, pasid);
> > - } else {
> > - iommu_flush_write_buffer(iommu);
> > - }
> > + pasid_flush_caches(iommu, pte, pasid, did);
> >
> > return 0;
> > }
> > @@ -603,16 +609,7 @@ int intel_pasid_setup_second_level(struct
> > intel_iommu *iommu,
> > */
> > pasid_set_sre(pte);
> > pasid_set_present(pte);
> > -
> > - if (!ecap_coherent(iommu->ecap))
> > - clflush_cache_range(pte, sizeof(*pte));
> > -
> > - if (cap_caching_mode(iommu->cap)) {
> > - pasid_cache_invalidation_with_pasid(iommu, did,
> > pasid);
> > - iotlb_invalidation_with_pasid(iommu, did, pasid);
> > - } else {
> > - iommu_flush_write_buffer(iommu);
> > - }
> > + pasid_flush_caches(iommu, pte, pasid, did);
> >
> > return 0;
> > }
> > @@ -646,16 +643,7 @@ int intel_pasid_setup_pass_through(struct
> > intel_iommu *iommu,
> > */
> > pasid_set_sre(pte);
> > pasid_set_present(pte);
> > -
> > - if (!ecap_coherent(iommu->ecap))
> > - clflush_cache_range(pte, sizeof(*pte));
> > -
> > - if (cap_caching_mode(iommu->cap)) {
> > - pasid_cache_invalidation_with_pasid(iommu, did,
> > pasid);
> > - iotlb_invalidation_with_pasid(iommu, did, pasid);
> > - } else {
> > - iommu_flush_write_buffer(iommu);
> > - }
> > + pasid_flush_caches(iommu, pte, pasid, did);
> >
> > return 0;
> > }
> > --
> > 2.7.4
>
[Jacob Pan]
next prev parent reply other threads:[~2019-10-28 22:37 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-24 19:54 [PATCH v7 00/11] Nested Shared Virtual Address (SVA) VT-d support Jacob Pan
2019-10-24 19:54 ` [PATCH v7 01/11] iommu/vt-d: Cache virtual command capability register Jacob Pan
2019-10-25 2:53 ` Lu Baolu
2019-10-25 6:06 ` Tian, Kevin
2019-11-08 10:32 ` Auger Eric
2019-10-24 19:54 ` [PATCH v7 02/11] iommu/vt-d: Enlightened PASID allocation Jacob Pan
2019-10-25 6:19 ` Tian, Kevin
2019-10-29 17:14 ` Jacob Pan
2019-10-29 18:16 ` Tian, Kevin
2019-11-08 10:33 ` Auger Eric
2019-11-08 22:22 ` Jacob Pan
2019-10-24 19:54 ` [PATCH v7 03/11] iommu/vt-d: Add custom allocator for IOASID Jacob Pan
2019-10-25 2:30 ` Lu Baolu
2019-10-25 4:43 ` Jacob Pan
2019-10-25 6:40 ` Tian, Kevin
2019-10-25 14:39 ` Lu Baolu
2019-10-25 15:52 ` Tian, Kevin
2019-10-28 22:49 ` Jacob Pan
2019-10-29 2:22 ` Lu Baolu
2019-10-25 6:31 ` Tian, Kevin
2019-10-28 22:52 ` Jacob Pan
2019-11-08 10:40 ` Auger Eric
2019-11-08 22:26 ` Jacob Pan
2019-10-24 19:54 ` [PATCH v7 04/11] iommu/vt-d: Replace Intel specific PASID allocator with IOASID Jacob Pan
2019-10-25 5:47 ` Lu Baolu
2019-11-01 18:29 ` Jacob Pan
2019-10-25 6:41 ` Tian, Kevin
2019-10-28 22:46 ` Jacob Pan
2019-11-08 11:30 ` Auger Eric
2019-11-08 22:55 ` Jacob Pan
2019-11-12 9:54 ` Auger Eric
2019-10-24 19:54 ` [PATCH v7 05/11] iommu/vt-d: Move domain helper to header Jacob Pan
2019-10-25 5:26 ` Lu Baolu
2019-10-24 19:54 ` [PATCH v7 06/11] iommu/vt-d: Avoid duplicated code for PASID setup Jacob Pan
2019-10-25 5:32 ` Lu Baolu
2019-10-25 6:42 ` Tian, Kevin
2019-10-28 22:41 ` Jacob Pan [this message]
2019-11-12 9:54 ` Auger Eric
2019-10-24 19:55 ` [PATCH v7 07/11] iommu/vt-d: Add nested translation helper function Jacob Pan
2019-10-25 7:04 ` Tian, Kevin
2019-11-01 21:10 ` Jacob Pan
2019-10-25 15:04 ` Lu Baolu
2019-10-25 16:06 ` Jacob Pan
2019-11-08 13:55 ` Auger Eric
2019-10-24 19:55 ` [PATCH v7 08/11] iommu/vt-d: Misc macro clean up for SVM Jacob Pan
2019-10-26 1:00 ` Lu Baolu
2019-10-28 22:38 ` Jacob Pan
2019-10-24 19:55 ` [PATCH v7 09/11] iommu/vt-d: Add bind guest PASID support Jacob Pan
2019-10-25 7:19 ` Tian, Kevin
2019-10-25 17:33 ` Jacob Pan
2019-10-28 6:03 ` Tian, Kevin
2019-10-28 16:02 ` Jacob Pan
2019-10-29 7:57 ` Tian, Kevin
2019-10-29 16:11 ` Jacob Pan
2019-10-29 18:04 ` Tian, Kevin
2019-10-29 2:33 ` Lu Baolu
2019-10-26 2:01 ` Lu Baolu
2019-10-28 22:29 ` Jacob Pan
2019-10-29 2:54 ` Lu Baolu
2019-10-29 4:11 ` Jacob Pan
2019-10-29 5:04 ` Lu Baolu
2019-10-24 19:55 ` [PATCH v7 10/11] iommu/vt-d: Support flushing more translation cache types Jacob Pan
2019-10-25 7:21 ` Tian, Kevin
2019-11-01 21:30 ` Jacob Pan
2019-10-26 2:22 ` Lu Baolu
2019-11-01 21:28 ` Jacob Pan
2019-11-08 16:18 ` Auger Eric
2019-11-08 23:05 ` Jacob Pan
2019-10-24 19:55 ` [PATCH v7 11/11] iommu/vt-d: Add svm/sva invalidate function Jacob Pan
2019-10-25 7:27 ` Tian, Kevin
2019-10-26 2:40 ` Lu Baolu
2019-10-26 7:03 ` Lu Baolu
2019-10-28 6:06 ` Tian, Kevin
2019-10-28 16:10 ` Jacob Pan
2019-10-29 18:52 ` Tian, Kevin
2019-10-29 19:25 ` Jacob Pan
2019-10-28 16:13 ` Jacob Pan
2019-11-12 10:28 ` Auger Eric
2020-02-15 1:18 ` Jacob Pan
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=20191028154140.313a1fe9@jacob-builder \
--to=jacob.jun.pan@linux.intel.com \
--cc=alex.williamson@redhat.com \
--cc=ashok.raj@intel.com \
--cc=baolu.lu@linux.intel.com \
--cc=dwmw2@infradead.org \
--cc=eric.auger@redhat.com \
--cc=hch@infradead.org \
--cc=iommu@lists.linux-foundation.org \
--cc=jean-philippe@linaro.com \
--cc=jic23@kernel.org \
--cc=joro@8bytes.org \
--cc=kevin.tian@intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=yi.l.liu@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).