Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1200918

[PATCH 23/26] iommu/vt-d: Remove dmar_global_lock from device_notifier

Show all headers | View raw

From: Joerg Roedel <jroedel@suse.de>

The code in the locked section does not touch anything
protected by the dmar_global_lock. Remove it from there.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/iommu/intel-iommu.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 1a9ecfe..624e0a2 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -4272,11 +4272,9 @@ static int device_notifier(struct notifier_block *nb,
 	if (!domain)
 		return 0;
 
-	down_read(&dmar_global_lock);
 	dmar_remove_one_dev_info(domain, dev);
 	if (!domain_type_is_vm_or_si(domain) && list_empty(&domain->devices))
 		domain_exit(domain);
-	up_read(&dmar_global_lock);
 
 	return 0;
 }
-- 
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[PATCH 00/26] iommu/vt-d: Clean up device<->domain  attachment Joerg Roedel <joro@8bytes.org> - 2015-08-05 17:30 +0200
  [PATCH 03/26] iommu/vt-d: Split up iommu->domains array Joerg Roedel <joro@8bytes.org> - 2015-08-05 17:30 +0200
    Re: [PATCH 03/26] iommu/vt-d: Split up iommu->domains array Alex Williamson <alex.williamson@redhat.com> - 2015-08-07 00:40 +0200
      Re: [PATCH 03/26] iommu/vt-d: Split up iommu->domains array Joerg Roedel <joro@8bytes.org> - 2015-08-07 13:20 +0200
  [PATCH 14/26] iommu/vt-d: Move context-mapping  into dmar_insert_dev_info Joerg Roedel <joro@8bytes.org> - 2015-08-05 17:40 +0200
  [PATCH 11/26] iommu/vt-d: Simplify io/tlb flushing in intel_iommu_unmap Joerg Roedel <joro@8bytes.org> - 2015-08-05 17:40 +0200
  [PATCH 13/26] iommu/vt-d: Simplify domain_remove_dev_info() Joerg Roedel <joro@8bytes.org> - 2015-08-05 17:40 +0200
  [PATCH 10/26] iommu/vt-d: Replace iommu_bmp with a refcount Joerg Roedel <joro@8bytes.org> - 2015-08-05 17:40 +0200
    Re: [PATCH 10/26] iommu/vt-d: Replace iommu_bmp with a refcount Alex Williamson <alex.williamson@redhat.com> - 2015-08-06 21:30 +0200
      Re: [PATCH 10/26] iommu/vt-d: Replace iommu_bmp with a refcount Joerg Roedel <joro@8bytes.org> - 2015-08-07 13:20 +0200
  [PATCH 12/26] iommu/vt-d: Simplify domain_remove_one_dev_info() Joerg Roedel <joro@8bytes.org> - 2015-08-05 17:40 +0200
  [PATCH 16/26] iommu/vt-d: Rename domain_remove_one_dev_info() Joerg Roedel <joro@8bytes.org> - 2015-08-05 17:40 +0200
  [PATCH 17/26] iommu/vt-d: Rename iommu_detach_dependent_devices() Joerg Roedel <joro@8bytes.org> - 2015-08-05 17:40 +0200
  [PATCH 21/26] iommu/vt-d: Only call domain_remove_one_dev_info to detach old domain Joerg Roedel <joro@8bytes.org> - 2015-08-05 17:40 +0200
  [PATCH 23/26] iommu/vt-d: Remove dmar_global_lock from device_notifier Joerg Roedel <joro@8bytes.org> - 2015-08-05 17:40 +0200
  Re: [PATCH 00/26] iommu/vt-d: Clean up device<->domain  attachment Alex Williamson <alex.williamson@redhat.com> - 2015-08-06 23:10 +0200
    Re: [PATCH 00/26] iommu/vt-d: Clean up device<->domain  attachment Joerg Roedel <joro@8bytes.org> - 2015-08-07 13:30 +0200

csiph-web