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From: Jean-Philippe Brucker <jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
To: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
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	dwmw2-wEGCiKHe2LqWVfeAwA7xHQ@public.gmane.org,
	christian.koenig-5C7GfCeVMHo@public.gmane.org
Subject: [PATCH v2 24/40] iommu/arm-smmu-v3: Seize private ASID
Date: Fri, 11 May 2018 20:06:25 +0100
Message-ID: <20180511190641.23008-25-jean-philippe.brucker@arm.com> (raw)
In-Reply-To: <20180511190641.23008-1-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>

The SMMU has a single ASID space, the union of shared and private ASID
sets. This means that the context table module competes with the arch
allocator for ASIDs. Shared ASIDs are those of Linux processes, allocated
by the arch, and contribute in broadcast TLB maintenance. Private ASIDs
are allocated by the SMMU driver and used for "classic" map/unmap DMA.
They require explicit TLB invalidations.

When we pin down an mm_context and get an ASID that is already in use by
the SMMU, it belongs to a private context. We used to simply abort the
bind, but this is unfair to users that would be unable to bind a few
seemingly random processes. Try to allocate a new private ASID for the
context in use, and make the old ASID shared.

Introduce a new lock to prevent races when rewriting context descriptors.

Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
---
 drivers/iommu/arm-smmu-v3-context.c | 90 ++++++++++++++++++++++++++---
 1 file changed, 83 insertions(+), 7 deletions(-)

diff --git a/drivers/iommu/arm-smmu-v3-context.c b/drivers/iommu/arm-smmu-v3-context.c
index 352cba3c1a62..0e12f6804e16 100644
--- a/drivers/iommu/arm-smmu-v3-context.c
+++ b/drivers/iommu/arm-smmu-v3-context.c
@@ -65,6 +65,8 @@
 #define ARM_SMMU_TCR2CD(tcr, fld)	FIELD_PREP(CTXDESC_CD_0_TCR_##fld, \
 					FIELD_GET(ARM64_TCR_##fld, tcr))
 
+#define ARM_SMMU_NO_PASID		(-1)
+
 struct arm_smmu_cd {
 	struct iommu_pasid_entry	entry;
 
@@ -72,8 +74,14 @@ struct arm_smmu_cd {
 	u64				tcr;
 	u64				mair;
 
+	int				pasid;
+
+	/* 'refs' tracks alloc/free */
 	refcount_t			refs;
+	/* 'users' tracks attach/detach, and is only used for sanity checking */
+	unsigned int			users;
 	struct mm_struct		*mm;
+	struct arm_smmu_cd_tables	*tbl;
 };
 
 #define pasid_entry_to_cd(entry) \
@@ -105,6 +113,7 @@ struct arm_smmu_cd_tables {
 #define pasid_ops_to_tables(ops) \
 	pasid_to_cd_tables(iommu_pasid_table_ops_to_table(ops))
 
+static DEFINE_SPINLOCK(contexts_lock);
 static DEFINE_SPINLOCK(asid_lock);
 static DEFINE_IDR(asid_idr);
 
@@ -191,8 +200,8 @@ static u64 arm_smmu_cpu_tcr_to_cd(u64 tcr)
 	return val;
 }
 
-static int arm_smmu_write_ctx_desc(struct arm_smmu_cd_tables *tbl, int ssid,
-				   struct arm_smmu_cd *cd)
+static int __arm_smmu_write_ctx_desc(struct arm_smmu_cd_tables *tbl, int ssid,
+				     struct arm_smmu_cd *cd)
 {
 	u64 val;
 	bool cd_live;
@@ -262,6 +271,18 @@ static int arm_smmu_write_ctx_desc(struct arm_smmu_cd_tables *tbl, int ssid,
 	return 0;
 }
 
+static int arm_smmu_write_ctx_desc(struct arm_smmu_cd_tables *tbl, int ssid,
+				   struct arm_smmu_cd *cd)
+{
+	int ret;
+
+	spin_lock(&contexts_lock);
+	ret = __arm_smmu_write_ctx_desc(tbl, ssid, cd);
+	spin_unlock(&contexts_lock);
+
+	return ret;
+}
+
 static bool arm_smmu_free_asid(struct arm_smmu_cd *cd)
 {
 	bool free;
@@ -301,15 +322,26 @@ static struct arm_smmu_cd *arm_smmu_alloc_cd(struct arm_smmu_cd_tables *tbl)
 	if (!cd)
 		return NULL;
 
-	cd->entry.release = arm_smmu_free_cd;
+	cd->pasid		= ARM_SMMU_NO_PASID;
+	cd->tbl			= tbl;
+	cd->entry.release	= arm_smmu_free_cd;
 	refcount_set(&cd->refs, 1);
 
 	return cd;
 }
 
+/*
+ * Try to reserve this ASID in the SMMU. If it is in use, try to steal it from
+ * the private entry. Careful here, we may be modifying the context tables of
+ * another SMMU!
+ */
 static struct arm_smmu_cd *arm_smmu_share_asid(u16 asid)
 {
+	int ret;
 	struct arm_smmu_cd *cd;
+	struct arm_smmu_cd_tables *tbl;
+	struct arm_smmu_context_cfg *cfg;
+	struct iommu_pasid_entry old_entry;
 
 	cd = idr_find(&asid_idr, asid);
 	if (!cd)
@@ -319,17 +351,47 @@ static struct arm_smmu_cd *arm_smmu_share_asid(u16 asid)
 		/*
 		 * It's pretty common to find a stale CD when doing unbind-bind,
 		 * given that the release happens after a RCU grace period.
-		 * Simply reuse it.
+		 * Simply reuse it, but check that it isn't active, because it's
+		 * going to be assigned a different PASID.
 		 */
+		if (WARN_ON(cd->users))
+			return ERR_PTR(-EINVAL);
+
 		refcount_inc(&cd->refs);
 		return cd;
 	}
 
+	tbl = cd->tbl;
+	cfg = &tbl->pasid.cfg.arm_smmu;
+
+	ret = idr_alloc_cyclic(&asid_idr, cd, 0, 1 << cfg->asid_bits,
+			       GFP_ATOMIC);
+	if (ret < 0)
+		return ERR_PTR(-ENOSPC);
+
+	/* Save the previous ASID */
+	old_entry = cd->entry;
+
 	/*
-	 * Ouch, ASID is already in use for a private cd.
-	 * TODO: seize it, for the common good.
+	 * Race with unmap; TLB invalidations will start targeting the new ASID,
+	 * which isn't assigned yet. We'll do an invalidate-all on the old ASID
+	 * later, so it doesn't matter.
 	 */
-	return ERR_PTR(-EEXIST);
+	cd->entry.tag = ret;
+
+	/*
+	 * Update ASID and invalidate CD in all associated masters. There will
+	 * be some overlap between use of both ASIDs, until we invalidate the
+	 * TLB.
+	 */
+	arm_smmu_write_ctx_desc(tbl, cd->pasid, cd);
+
+	/* Invalidate TLB entries previously associated with that context */
+	iommu_pasid_flush_tlbs(&tbl->pasid, cd->pasid, &old_entry);
+
+	idr_remove(&asid_idr, asid);
+
+	return NULL;
 }
 
 static struct iommu_pasid_entry *
@@ -476,6 +538,15 @@ static int arm_smmu_set_cd(struct iommu_pasid_table_ops *ops, int pasid,
 	if (WARN_ON(pasid > (1 << tbl->pasid.cfg.order)))
 		return -EINVAL;
 
+	if (WARN_ON(cd->pasid != ARM_SMMU_NO_PASID && cd->pasid != pasid))
+		return -EEXIST;
+
+	/*
+	 * There is a single cd structure for each address space, multiple
+	 * devices may use the same in different tables.
+	 */
+	cd->users++;
+	cd->pasid = pasid;
 	return arm_smmu_write_ctx_desc(tbl, pasid, cd);
 }
 
@@ -488,6 +559,11 @@ static void arm_smmu_clear_cd(struct iommu_pasid_table_ops *ops, int pasid,
 	if (WARN_ON(pasid > (1 << tbl->pasid.cfg.order)))
 		return;
 
+	WARN_ON(cd->pasid != pasid);
+
+	if (!(--cd->users))
+		cd->pasid = ARM_SMMU_NO_PASID;
+
 	arm_smmu_write_ctx_desc(tbl, pasid, NULL);
 
 	/*
-- 
2.17.0

  parent reply index

Thread overview: 123+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-11 19:06 [PATCH v2 00/40] Shared Virtual Addressing for the IOMMU Jean-Philippe Brucker
     [not found] ` <20180511190641.23008-1-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-05-11 19:06   ` [PATCH v2 01/40] iommu: Introduce Shared Virtual Addressing API Jean-Philippe Brucker
     [not found]     ` <20180511190641.23008-2-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-05-16 20:41       ` Jacob Pan
2018-05-17 10:02         ` Jean-Philippe Brucker
2018-05-17 17:00           ` Jacob Pan
2018-09-05 11:29       ` Auger Eric
     [not found]         ` <bf42affd-e9d0-e4fc-6d28-f3c3f7795348-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2018-09-06 11:09           ` Jean-Philippe Brucker
     [not found]             ` <03d31ba5-1eda-ea86-8c0c-91d14c86fe83-5wv7dgnIgG8@public.gmane.org>
2018-09-06 11:12               ` Christian König
     [not found]                 ` <ed39159c-087e-7e56-7d29-d1de9fa1677f-5C7GfCeVMHo@public.gmane.org>
2018-09-06 12:45                   ` Jean-Philippe Brucker
     [not found]                     ` <f0b317d5-e2e9-5478-952c-05e8b97bd68b-5wv7dgnIgG8@public.gmane.org>
2018-09-07  8:55                       ` Christian König
     [not found]                         ` <2fd4a0a1-1a35-bf82-df84-b995cce011d9-5C7GfCeVMHo@public.gmane.org>
2018-09-07 15:45                           ` Jean-Philippe Brucker
     [not found]                             ` <65e7accd-4446-19f5-c667-c6407e89cfa6-5wv7dgnIgG8@public.gmane.org>
2018-09-07 18:02                               ` Christian König
     [not found]                                 ` <5bbc0332-b94b-75cc-ca42-a9b196811daf-5C7GfCeVMHo@public.gmane.org>
2018-09-07 21:25                                   ` Jacob Pan
2018-09-08  7:29                                     ` Christian König
     [not found]                                       ` <3e3a6797-a233-911b-3a7d-d9b549160960-5C7GfCeVMHo@public.gmane.org>
2018-09-12 12:40                                         ` Jean-Philippe Brucker
     [not found]                                           ` <9445a0be-fb5b-d195-4fdf-7ad6cb36ef4f-5wv7dgnIgG8@public.gmane.org>
2018-09-12 12:56                                             ` Christian König
2018-09-13  7:15                                     ` Tian, Kevin
2018-09-13  7:26                           ` Tian, Kevin
2018-05-11 19:06   ` [PATCH v2 02/40] iommu/sva: Bind process address spaces to devices Jean-Philippe Brucker
     [not found]     ` <20180511190641.23008-3-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-05-17 13:10       ` Jonathan Cameron
     [not found]         ` <20180517141058.00001c76-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-05-21 14:43           ` Jean-Philippe Brucker
2018-09-05 11:29       ` Auger Eric
     [not found]         ` <471873d4-a1a6-1a3a-cf17-1e686b4ade96-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2018-09-06 11:09           ` Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 03/40] iommu/sva: Manage process address spaces Jean-Philippe Brucker
     [not found]     ` <20180511190641.23008-4-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-05-16 23:31       ` Jacob Pan
2018-05-17 10:02         ` Jean-Philippe Brucker
     [not found]           ` <de478769-9f7a-d40b-a55e-e2c63ad883e8-5wv7dgnIgG8@public.gmane.org>
2018-05-22 16:43             ` Jacob Pan
2018-05-24 11:44               ` Jean-Philippe Brucker
2018-05-24 11:50                 ` Ilias Apalodimas
2018-05-24 15:04                   ` Jean-Philippe Brucker
     [not found]                     ` <19e82a74-429a-3f86-119e-32b12082d0ff-5wv7dgnIgG8@public.gmane.org>
2018-05-25  6:33                       ` Ilias Apalodimas
2018-05-25  8:39                         ` Jonathan Cameron
     [not found]                           ` <20180525093959.000040a7-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-05-26  2:24                             ` Kenneth Lee
2018-05-26  2:24                           ` Kenneth Lee
     [not found]                           ` <20180526022445.GA6069@kllp05>
2018-06-11 16:10                             ` Kenneth Lee
2018-06-11 16:10                             ` Kenneth Lee
2018-06-11 16:32                           ` Kenneth Lee
2018-05-17 14:25       ` Jonathan Cameron
     [not found]         ` <20180517150516.000067ca-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-05-21 14:44           ` Jean-Philippe Brucker
2018-09-05 12:14       ` Auger Eric
     [not found]         ` <d785ec89-6743-d0f1-1a7f-85599a033e5b-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2018-09-05 18:18           ` Jacob Pan
2018-09-06 17:40             ` Jean-Philippe Brucker
2018-09-06 11:10           ` Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 04/40] iommu/sva: Add a mm_exit callback for device drivers Jean-Philippe Brucker
     [not found]     ` <20180511190641.23008-5-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-09-05 13:23       ` Auger Eric
     [not found]         ` <d1dc28c4-7742-9c41-3f91-3fbcb8b13c1c-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2018-09-06 11:10           ` Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 05/40] iommu/sva: Track mm changes with an MMU notifier Jean-Philippe Brucker
     [not found]     ` <20180511190641.23008-6-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-05-17 14:25       ` Jonathan Cameron
     [not found]         ` <20180517152514.00004247-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-05-21 14:44           ` Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 06/40] iommu/sva: Search mm by PASID Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 07/40] iommu: Add a page fault handler Jean-Philippe Brucker
     [not found]     ` <20180511190641.23008-8-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-05-17 15:25       ` Jonathan Cameron
     [not found]         ` <20180517162555.00002bd3-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-05-21 14:48           ` Jean-Philippe Brucker
2018-05-18 18:04       ` Jacob Pan
2018-05-21 14:49         ` Jean-Philippe Brucker
     [not found]           ` <8a640794-a6f3-fa01-82a9-06479a6f779a-5wv7dgnIgG8@public.gmane.org>
2018-05-22 23:35             ` Jacob Pan
2018-05-24 11:44               ` Jean-Philippe Brucker
     [not found]                 ` <bdf9f221-ab97-2168-d072-b7f6a0dba840-5wv7dgnIgG8@public.gmane.org>
2018-05-26  0:35                   ` Jacob Pan
2018-05-29 10:00                     ` Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 08/40] iommu/iopf: Handle mm faults Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 09/40] iommu/sva: Register page fault handler Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 10/40] mm: export symbol mm_access Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 11/40] mm: export symbol find_get_task_by_vpid Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 12/40] mm: export symbol mmput_async Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 13/40] vfio: Add support for Shared Virtual Addressing Jean-Philippe Brucker
     [not found]     ` <20180511190641.23008-14-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-05-17 15:58       ` Jonathan Cameron
     [not found]         ` <20180517165845.00000cc9-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-05-21 14:51           ` Jean-Philippe Brucker
2018-05-23  9:38       ` Xu Zaibo
     [not found]         ` <5B0536A3.1000304-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-05-24 11:44           ` Jean-Philippe Brucker
     [not found]             ` <cd13f60d-b282-3804-4ca7-2d34476c597f-5wv7dgnIgG8@public.gmane.org>
2018-05-24 12:35               ` Xu Zaibo
     [not found]                 ` <5B06B17C.1090809-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-05-24 15:04                   ` Jean-Philippe Brucker
     [not found]                     ` <205c1729-8026-3efe-c363-d37d7150d622-5wv7dgnIgG8@public.gmane.org>
2018-05-25  2:39                       ` Xu Zaibo
2018-05-25  9:47                         ` Jean-Philippe Brucker
     [not found]                           ` <fea420ff-e738-e2ed-ab1e-a3f4dde4b6ef-5wv7dgnIgG8@public.gmane.org>
2018-05-26  3:53                             ` Xu Zaibo
     [not found]                               ` <5B08DA21.3070507-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-05-29 11:55                                 ` Jean-Philippe Brucker
     [not found]                                   ` <99ff4f89-86ef-a251-894c-8aa8a47d2a69-5wv7dgnIgG8@public.gmane.org>
2018-05-29 12:24                                     ` Xu Zaibo
2018-08-27  8:06       ` Xu Zaibo
     [not found]         ` <5B83B11E.7010807-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-08-31 13:34           ` Jean-Philippe Brucker
     [not found]             ` <1d5b6529-4e5a-723c-3f1b-dd5a9adb490c-5wv7dgnIgG8@public.gmane.org>
2018-09-01  2:23               ` Xu Zaibo
     [not found]                 ` <5B89F818.7060300-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-09-03 10:34                   ` Jean-Philippe Brucker
     [not found]                     ` <3a961aff-e830-64bb-b6a9-14e08de1abf5-5wv7dgnIgG8@public.gmane.org>
2018-09-04  2:12                       ` Xu Zaibo
     [not found]                         ` <5B8DEA15.7020404-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-09-04 10:57                           ` Jean-Philippe Brucker
     [not found]                             ` <bc27f902-4d12-21b7-b9e9-18bcae170503-5wv7dgnIgG8@public.gmane.org>
2018-09-05  3:15                               ` Xu Zaibo
     [not found]                                 ` <5B8F4A59.20004-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-09-05 11:02                                   ` Jean-Philippe Brucker
     [not found]                                     ` <b51107b8-a525-13ce-f4c3-d423b8502c27-5wv7dgnIgG8@public.gmane.org>
2018-09-06  7:26                                       ` Xu Zaibo
2018-05-11 19:06   ` [PATCH v2 14/40] dt-bindings: document stall and PASID properties for IOMMU masters Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 15/40] iommu/of: Add stall and pasid properties to iommu_fwspec Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 16/40] arm64: mm: Pin down ASIDs for sharing mm with devices Jean-Philippe Brucker
     [not found]     ` <20180511190641.23008-17-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-05-15 14:16       ` Catalin Marinas
     [not found]         ` <20180515141658.vivrgcyww2pxumye-+1aNUgJU5qkijLcmloz0ER/iLCjYCKR+VpNB7YpNyf8@public.gmane.org>
2018-05-17 10:01           ` Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 17/40] iommu/arm-smmu-v3: Link domains and devices Jean-Philippe Brucker
     [not found]     ` <20180511190641.23008-18-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-05-17 16:07       ` Jonathan Cameron
     [not found]         ` <20180517170748.00004927-hv44wF8Li93QT0dZR+AlfA@public.gmane.org>
2018-05-21 14:49           ` Jean-Philippe Brucker
2018-09-10 15:16       ` Auger Eric
2018-05-11 19:06   ` [PATCH v2 18/40] iommu/io-pgtable-arm: Factor out ARM LPAE register defines Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 19/40] iommu: Add generic PASID table library Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 20/40] iommu/arm-smmu-v3: Move context descriptor code Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 21/40] iommu/arm-smmu-v3: Add support for Substream IDs Jean-Philippe Brucker
     [not found]     ` <20180511190641.23008-22-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-05-31 11:01       ` Bharat Kumar Gogada
     [not found]         ` <BLUPR0201MB1505AA55707BE2E13392FFAFA5630-hRBPhS1iNj/g9tdZWAsUFxrHTHEw16jenBOFsp37pqbUKgpGm//BTAC/G2K4zDHf@public.gmane.org>
2018-06-01 10:46           ` Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 22/40] iommu/arm-smmu-v3: Add second level of context descriptor table Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 23/40] iommu/arm-smmu-v3: Share process page tables Jean-Philippe Brucker
2018-05-11 19:06   ` Jean-Philippe Brucker [this message]
2018-05-11 19:06   ` [PATCH v2 25/40] iommu/arm-smmu-v3: Add support for VHE Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 26/40] iommu/arm-smmu-v3: Enable broadcast TLB maintenance Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 27/40] iommu/arm-smmu-v3: Add SVA feature checking Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 28/40] iommu/arm-smmu-v3: Implement mm operations Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 29/40] iommu/arm-smmu-v3: Add support for Hardware Translation Table Update Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 30/40] iommu/arm-smmu-v3: Register I/O Page Fault queue Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 31/40] iommu/arm-smmu-v3: Improve add_device error handling Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 32/40] iommu/arm-smmu-v3: Maintain a SID->device structure Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 33/40] iommu/arm-smmu-v3: Add stall support for platform devices Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 34/40] ACPI/IORT: Check ATS capability in root complex nodes Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 35/40] iommu/arm-smmu-v3: Add support for PCI ATS Jean-Philippe Brucker
     [not found]     ` <20180511190641.23008-36-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-05-19 17:25       ` Sinan Kaya
     [not found]         ` <922474e8-0aa5-e022-0502-f1e51b0d4859-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2018-05-21 14:52           ` Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 36/40] iommu/arm-smmu-v3: Hook up ATC invalidation to mm ops Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 37/40] iommu/arm-smmu-v3: Disable tagged pointers Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 38/40] PCI: Make "PRG Response PASID Required" handling common Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 39/40] iommu/arm-smmu-v3: Add support for PRI Jean-Philippe Brucker
     [not found]     ` <20180511190641.23008-40-jean-philippe.brucker-5wv7dgnIgG8@public.gmane.org>
2018-05-25 14:08       ` Bharat Kumar Gogada
     [not found]         ` <BLUPR0201MB150513BBAA161355DE9B3A48A5690-hRBPhS1iNj/g9tdZWAsUFxrHTHEw16jenBOFsp37pqbUKgpGm//BTAC/G2K4zDHf@public.gmane.org>
2018-05-29 10:27           ` Jean-Philippe Brucker
2018-05-11 19:06   ` [PATCH v2 40/40] iommu/arm-smmu-v3: Add support for PCI PASID Jean-Philippe Brucker

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