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From: Fenghua Yu <fenghua.yu@intel.com>
To: "Thomas Gleixner" <tglx@linutronix.de>,
	"Dave Hansen" <dave.hansen@linux.intel.com>,
	"Ingo Molnar" <mingo@redhat.com>,
	"Borislav Petkov" <bp@alien8.de>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Andy Lutomirski" <luto@kernel.org>,
	"Tony Luck" <tony.luck@intel.com>,
	"Lu Baolu" <baolu.lu@linux.intel.com>,
	"Joerg Roedel" <joro@8bytes.org>,
	Josh Poimboeuf <jpoimboe@redhat.com>,
	"Jacob Pan" <jacob.jun.pan@linux.intel.com>,
	"Ashok Raj" <ashok.raj@intel.com>,
	"Ravi V Shankar" <ravi.v.shankar@intel.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>,
	iommu@lists.linux-foundation.org, x86 <x86@kernel.org>,
	linux-kernel <linux-kernel@vger.kernel.org>
Subject: [PATCH v3 02/11] mm: Change CONFIG option for mm->pasid field
Date: Fri, 28 Jan 2022 12:28:56 -0800	[thread overview]
Message-ID: <20220128202905.2274672-3-fenghua.yu@intel.com> (raw)
In-Reply-To: <20220128202905.2274672-1-fenghua.yu@intel.com>

This currently depends on CONFIG_IOMMU_SUPPORT. But it is only
needed when CONFIG_IOMMU_SVA option is enabled.

Change the CONFIG guards around definition and initialization
of mm->pasid field.

Suggested-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
---
v2:
- Change condition to more accurate CONFIG_IOMMU_SVA (Jacob and Tony)

 include/linux/mm_types.h | 2 +-
 kernel/fork.c            | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 9db36dc5d4cf..c959116abd95 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -630,7 +630,7 @@ struct mm_struct {
 #endif
 		struct work_struct async_put_work;
 
-#ifdef CONFIG_IOMMU_SUPPORT
+#ifdef CONFIG_IOMMU_SVA
 		u32 pasid;
 #endif
 	} __randomize_layout;
diff --git a/kernel/fork.c b/kernel/fork.c
index d75a528f7b21..6ee7551d3bd2 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1021,7 +1021,7 @@ static void mm_init_owner(struct mm_struct *mm, struct task_struct *p)
 
 static void mm_init_pasid(struct mm_struct *mm)
 {
-#ifdef CONFIG_IOMMU_SUPPORT
+#ifdef CONFIG_IOMMU_SVA
 	mm->pasid = INIT_PASID;
 #endif
 }
-- 
2.35.0

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WARNING: multiple messages have this Message-ID (diff)
From: Fenghua Yu <fenghua.yu@intel.com>
To: "Thomas Gleixner" <tglx@linutronix.de>,
	"Dave Hansen" <dave.hansen@linux.intel.com>,
	"Ingo Molnar" <mingo@redhat.com>,
	"Borislav Petkov" <bp@alien8.de>,
	"Peter Zijlstra" <peterz@infradead.org>,
	"Andy Lutomirski" <luto@kernel.org>,
	"Tony Luck" <tony.luck@intel.com>,
	"Lu Baolu" <baolu.lu@linux.intel.com>,
	"Joerg Roedel" <joro@8bytes.org>,
	Josh Poimboeuf <jpoimboe@redhat.com>,
	"Jacob Pan" <jacob.jun.pan@linux.intel.com>,
	"Ashok Raj" <ashok.raj@intel.com>,
	"Ravi V Shankar" <ravi.v.shankar@intel.com>
Cc: iommu@lists.linux-foundation.org, "x86" <x86@kernel.org>,
	"linux-kernel" <linux-kernel@vger.kernel.org>,
	Fenghua Yu <fenghua.yu@intel.com>
Subject: [PATCH v3 02/11] mm: Change CONFIG option for mm->pasid field
Date: Fri, 28 Jan 2022 12:28:56 -0800	[thread overview]
Message-ID: <20220128202905.2274672-3-fenghua.yu@intel.com> (raw)
In-Reply-To: <20220128202905.2274672-1-fenghua.yu@intel.com>

This currently depends on CONFIG_IOMMU_SUPPORT. But it is only
needed when CONFIG_IOMMU_SVA option is enabled.

Change the CONFIG guards around definition and initialization
of mm->pasid field.

Suggested-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Tony Luck <tony.luck@intel.com>
---
v2:
- Change condition to more accurate CONFIG_IOMMU_SVA (Jacob and Tony)

 include/linux/mm_types.h | 2 +-
 kernel/fork.c            | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
index 9db36dc5d4cf..c959116abd95 100644
--- a/include/linux/mm_types.h
+++ b/include/linux/mm_types.h
@@ -630,7 +630,7 @@ struct mm_struct {
 #endif
 		struct work_struct async_put_work;
 
-#ifdef CONFIG_IOMMU_SUPPORT
+#ifdef CONFIG_IOMMU_SVA
 		u32 pasid;
 #endif
 	} __randomize_layout;
diff --git a/kernel/fork.c b/kernel/fork.c
index d75a528f7b21..6ee7551d3bd2 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1021,7 +1021,7 @@ static void mm_init_owner(struct mm_struct *mm, struct task_struct *p)
 
 static void mm_init_pasid(struct mm_struct *mm)
 {
-#ifdef CONFIG_IOMMU_SUPPORT
+#ifdef CONFIG_IOMMU_SVA
 	mm->pasid = INIT_PASID;
 #endif
 }
-- 
2.35.0


  parent reply	other threads:[~2022-01-28 20:29 UTC|newest]

Thread overview: 54+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-01-28 20:28 [PATCH v3 00/11] Re-enable ENQCMD and PASID MSR Fenghua Yu
2022-01-28 20:28 ` Fenghua Yu
2022-01-28 20:28 ` [PATCH v3 01/11] iommu/sva: Rename CONFIG_IOMMU_SVA_LIB to CONFIG_IOMMU_SVA Fenghua Yu
2022-01-28 20:28   ` Fenghua Yu
2022-02-04 23:07   ` Thomas Gleixner
2022-02-04 23:07     ` Thomas Gleixner
2022-01-28 20:28 ` Fenghua Yu [this message]
2022-01-28 20:28   ` [PATCH v3 02/11] mm: Change CONFIG option for mm->pasid field Fenghua Yu
2022-02-04 23:07   ` Thomas Gleixner
2022-02-04 23:07     ` Thomas Gleixner
2022-01-28 20:28 ` [PATCH v3 03/11] iommu/ioasid: Introduce a helper to check for valid PASIDs Fenghua Yu
2022-01-28 20:28   ` Fenghua Yu
2022-02-04 23:08   ` Thomas Gleixner
2022-02-04 23:08     ` Thomas Gleixner
2022-02-04 23:23   ` Thomas Gleixner
2022-02-04 23:23     ` Thomas Gleixner
2022-01-28 20:28 ` [PATCH v3 04/11] kernel/fork: Initialize mm's PASID Fenghua Yu
2022-01-28 20:28   ` Fenghua Yu
2022-02-04 23:22   ` Thomas Gleixner
2022-02-04 23:22     ` Thomas Gleixner
2022-02-05  0:25     ` Fenghua Yu
2022-02-05  0:25       ` Fenghua Yu
2022-01-28 20:28 ` [PATCH v3 05/11] iommu/sva: Assign a PASID to mm on PASID allocation and free it on mm exit Fenghua Yu
2022-01-28 20:28   ` Fenghua Yu
2022-02-04 23:56   ` Thomas Gleixner
2022-02-04 23:56     ` Thomas Gleixner
2022-02-05  0:33     ` Fenghua Yu
2022-02-05  0:33       ` Fenghua Yu
2022-02-05  3:50   ` Lu Baolu
2022-02-05  3:50     ` Lu Baolu
2022-02-05  5:10     ` Fenghua Yu
2022-02-05  5:10       ` Fenghua Yu
2022-02-05  7:10       ` Lu Baolu
2022-02-05  7:10         ` Lu Baolu
2022-01-28 20:29 ` [PATCH v3 06/11] x86/fpu: Clear PASID when copying fpstate Fenghua Yu
2022-01-28 20:29   ` Fenghua Yu
2022-02-04 23:58   ` Thomas Gleixner
2022-02-04 23:58     ` Thomas Gleixner
2022-01-28 20:29 ` [PATCH v3 07/11] sched: Define and initialize a flag to identify valid PASID in the task Fenghua Yu
2022-01-28 20:29   ` Fenghua Yu
2022-02-04 23:58   ` Thomas Gleixner
2022-02-04 23:58     ` Thomas Gleixner
2022-01-28 20:29 ` [PATCH v3 08/11] x86/traps: Demand-populate PASID MSR via #GP Fenghua Yu
2022-01-28 20:29   ` Fenghua Yu
2022-02-05  0:00   ` Thomas Gleixner
2022-02-05  0:00     ` Thomas Gleixner
2022-01-28 20:29 ` [PATCH v3 09/11] x86/cpufeatures: Re-enable ENQCMD Fenghua Yu
2022-01-28 20:29   ` Fenghua Yu
2022-02-05  0:00   ` Thomas Gleixner
2022-02-05  0:00     ` Thomas Gleixner
2022-01-28 20:29 ` [PATCH v3 10/11] tools/objtool: Check for use of the ENQCMD instruction in the kernel Fenghua Yu
2022-01-28 20:29   ` Fenghua Yu
2022-01-28 20:29 ` [PATCH v3 11/11] docs: x86: Change documentation for SVA (Shared Virtual Addressing) Fenghua Yu
2022-01-28 20:29   ` Fenghua Yu

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