From: Peter Xu <peterx@redhat.com>
To: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Cc: joro@8bytes.org, Jason Wang <jasowang@redhat.com>,
peterx@redhat.com, Jerome Glisse <jglisse@redhat.com>
Subject: [PATCH 1/2] iommu/vt-d: Remove change_pte notifier
Date: Wed, 30 Jan 2019 13:57:57 +0800 [thread overview]
Message-ID: <20190130055758.3994-2-peterx@redhat.com> (raw)
In-Reply-To: <20190130055758.3994-1-peterx@redhat.com>
The change_pte() interface is tailored for PFN updates, while the
other notifier invalidate_range() should be enough for Intel IOMMU
cache flushing. Actually we've done similar thing for AMD IOMMU
already in 8301da53fbc1 ("iommu/amd: Remove change_pte mmu_notifier
call-back", 2014-07-30) but the Intel IOMMU driver still have it.
Signed-off-by: Peter Xu <peterx@redhat.com>
---
drivers/iommu/intel-svm.c | 9 ---------
1 file changed, 9 deletions(-)
diff --git a/drivers/iommu/intel-svm.c b/drivers/iommu/intel-svm.c
index a2a2aa4439aa..e9fd3ca057ac 100644
--- a/drivers/iommu/intel-svm.c
+++ b/drivers/iommu/intel-svm.c
@@ -180,14 +180,6 @@ static void intel_flush_svm_range(struct intel_svm *svm, unsigned long address,
rcu_read_unlock();
}
-static void intel_change_pte(struct mmu_notifier *mn, struct mm_struct *mm,
- unsigned long address, pte_t pte)
-{
- struct intel_svm *svm = container_of(mn, struct intel_svm, notifier);
-
- intel_flush_svm_range(svm, address, 1, 1, 0);
-}
-
/* Pages have been freed at this point */
static void intel_invalidate_range(struct mmu_notifier *mn,
struct mm_struct *mm,
@@ -227,7 +219,6 @@ static void intel_mm_release(struct mmu_notifier *mn, struct mm_struct *mm)
static const struct mmu_notifier_ops intel_mmuops = {
.release = intel_mm_release,
- .change_pte = intel_change_pte,
.invalidate_range = intel_invalidate_range,
};
--
2.17.1
next prev parent reply other threads:[~2019-01-30 5:58 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-30 5:57 [PATCH 0/2] Some MMU notifier cleanups for Intel/AMD IOMMU Peter Xu
2019-01-30 5:57 ` Peter Xu [this message]
2019-01-30 16:32 ` [PATCH 1/2] iommu/vt-d: Remove change_pte notifier Joerg Roedel
2019-01-30 5:57 ` [PATCH 2/2] iommu/amd: Remove clear_flush_young notifier Peter Xu
2019-01-30 12:27 ` Jean-Philippe Brucker
2019-01-31 7:59 ` Peter Xu
2019-01-31 12:25 ` Jean-Philippe Brucker
2019-02-01 3:51 ` Peter Xu
2019-02-01 11:46 ` Jean-Philippe Brucker
2019-02-02 7:08 ` Peter Xu
2019-01-30 16:31 ` Joerg Roedel
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=20190130055758.3994-2-peterx@redhat.com \
--to=peterx@redhat.com \
--cc=iommu@lists.linux-foundation.org \
--cc=jasowang@redhat.com \
--cc=jglisse@redhat.com \
--cc=joro@8bytes.org \
--cc=linux-kernel@vger.kernel.org \
/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).