All of lore.kernel.org
 help / color / mirror / Atom feed
From: Baoquan He <bhe@redhat.com>
To: joro@8bytes.org
Cc: Baoquan He <bhe@redhat.com>,
	kexec@lists.infradead.org, xlpang@redhat.com,
	linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
	dyoung@redhat.com
Subject: [PATCH v7 06/12] iommu: Add is_attach_deferred call-back to iommu-ops
Date: Fri, 25 Nov 2016 13:13:13 +0800	[thread overview]
Message-ID: <1480050799-1237-7-git-send-email-bhe@redhat.com> (raw)
In-Reply-To: <1480050799-1237-1-git-send-email-bhe@redhat.com>

This new call-back will be used to check if the domain attach need be
deferred for now. If yes, the domain attach/detach will return directly.

Signed-off-by: Baoquan He <bhe@redhat.com>
---
 drivers/iommu/iommu.c | 8 ++++++++
 include/linux/iommu.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 9a2f196..0262eee 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1083,6 +1083,10 @@ static int __iommu_attach_device(struct iommu_domain *domain,
 				 struct device *dev)
 {
 	int ret;
+	if ((domain->ops->is_attach_deferred != NULL) &&
+	    domain->ops->is_attach_deferred(domain, dev))
+		return 0;
+
 	if (unlikely(domain->ops->attach_dev == NULL))
 		return -ENODEV;
 
@@ -1124,6 +1128,10 @@ EXPORT_SYMBOL_GPL(iommu_attach_device);
 static void __iommu_detach_device(struct iommu_domain *domain,
 				  struct device *dev)
 {
+	if ((domain->ops->is_attach_deferred != NULL) &&
+	    domain->ops->is_attach_deferred(domain, dev))
+		return;
+
 	if (unlikely(domain->ops->detach_dev == NULL))
 		return;
 
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 436dc21..e179313 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -200,6 +200,7 @@ struct iommu_ops {
 	u32 (*domain_get_windows)(struct iommu_domain *domain);
 
 	int (*of_xlate)(struct device *dev, struct of_phandle_args *args);
+	bool (*is_attach_deferred)(struct iommu_domain *domain, struct device *dev);
 
 	unsigned long pgsize_bitmap;
 };
-- 
2.5.5


_______________________________________________
kexec mailing list
kexec@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/kexec

WARNING: multiple messages have this Message-ID (diff)
From: Baoquan He <bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: joro-zLv9SwRftAIdnm+yROfE0A@public.gmane.org
Cc: kexec-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org
Subject: [PATCH v7 06/12] iommu: Add is_attach_deferred call-back to iommu-ops
Date: Fri, 25 Nov 2016 13:13:13 +0800	[thread overview]
Message-ID: <1480050799-1237-7-git-send-email-bhe@redhat.com> (raw)
In-Reply-To: <1480050799-1237-1-git-send-email-bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>

This new call-back will be used to check if the domain attach need be
deferred for now. If yes, the domain attach/detach will return directly.

Signed-off-by: Baoquan He <bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
---
 drivers/iommu/iommu.c | 8 ++++++++
 include/linux/iommu.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 9a2f196..0262eee 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1083,6 +1083,10 @@ static int __iommu_attach_device(struct iommu_domain *domain,
 				 struct device *dev)
 {
 	int ret;
+	if ((domain->ops->is_attach_deferred != NULL) &&
+	    domain->ops->is_attach_deferred(domain, dev))
+		return 0;
+
 	if (unlikely(domain->ops->attach_dev == NULL))
 		return -ENODEV;
 
@@ -1124,6 +1128,10 @@ EXPORT_SYMBOL_GPL(iommu_attach_device);
 static void __iommu_detach_device(struct iommu_domain *domain,
 				  struct device *dev)
 {
+	if ((domain->ops->is_attach_deferred != NULL) &&
+	    domain->ops->is_attach_deferred(domain, dev))
+		return;
+
 	if (unlikely(domain->ops->detach_dev == NULL))
 		return;
 
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 436dc21..e179313 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -200,6 +200,7 @@ struct iommu_ops {
 	u32 (*domain_get_windows)(struct iommu_domain *domain);
 
 	int (*of_xlate)(struct device *dev, struct of_phandle_args *args);
+	bool (*is_attach_deferred)(struct iommu_domain *domain, struct device *dev);
 
 	unsigned long pgsize_bitmap;
 };
-- 
2.5.5

WARNING: multiple messages have this Message-ID (diff)
From: Baoquan He <bhe@redhat.com>
To: joro@8bytes.org
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
	kexec@lists.infradead.org, dyoung@redhat.com, xlpang@redhat.com,
	Baoquan He <bhe@redhat.com>
Subject: [PATCH v7 06/12] iommu: Add is_attach_deferred call-back to iommu-ops
Date: Fri, 25 Nov 2016 13:13:13 +0800	[thread overview]
Message-ID: <1480050799-1237-7-git-send-email-bhe@redhat.com> (raw)
In-Reply-To: <1480050799-1237-1-git-send-email-bhe@redhat.com>

This new call-back will be used to check if the domain attach need be
deferred for now. If yes, the domain attach/detach will return directly.

Signed-off-by: Baoquan He <bhe@redhat.com>
---
 drivers/iommu/iommu.c | 8 ++++++++
 include/linux/iommu.h | 1 +
 2 files changed, 9 insertions(+)

diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c
index 9a2f196..0262eee 100644
--- a/drivers/iommu/iommu.c
+++ b/drivers/iommu/iommu.c
@@ -1083,6 +1083,10 @@ static int __iommu_attach_device(struct iommu_domain *domain,
 				 struct device *dev)
 {
 	int ret;
+	if ((domain->ops->is_attach_deferred != NULL) &&
+	    domain->ops->is_attach_deferred(domain, dev))
+		return 0;
+
 	if (unlikely(domain->ops->attach_dev == NULL))
 		return -ENODEV;
 
@@ -1124,6 +1128,10 @@ EXPORT_SYMBOL_GPL(iommu_attach_device);
 static void __iommu_detach_device(struct iommu_domain *domain,
 				  struct device *dev)
 {
+	if ((domain->ops->is_attach_deferred != NULL) &&
+	    domain->ops->is_attach_deferred(domain, dev))
+		return;
+
 	if (unlikely(domain->ops->detach_dev == NULL))
 		return;
 
diff --git a/include/linux/iommu.h b/include/linux/iommu.h
index 436dc21..e179313 100644
--- a/include/linux/iommu.h
+++ b/include/linux/iommu.h
@@ -200,6 +200,7 @@ struct iommu_ops {
 	u32 (*domain_get_windows)(struct iommu_domain *domain);
 
 	int (*of_xlate)(struct device *dev, struct of_phandle_args *args);
+	bool (*is_attach_deferred)(struct iommu_domain *domain, struct device *dev);
 
 	unsigned long pgsize_bitmap;
 };
-- 
2.5.5

  parent reply	other threads:[~2016-11-25  5:14 UTC|newest]

Thread overview: 42+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-11-25  5:13 [PATCH v7 00/12] Fix kdump faults on system with amd iommu Baoquan He
2016-11-25  5:13 ` Baoquan He
2016-11-25  5:13 ` Baoquan He
2016-11-25  5:13 ` [PATCH v7 01/12] iommu/amd: Detect pre enabled translation Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13 ` [PATCH v7 02/12] iommu/amd: add several helper function Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13 ` [PATCH v7 03/12] iommu/amd: Define bit fields for DTE particularly Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13 ` [PATCH v7 04/12] iommu/amd: Add function copy_dev_tables Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13 ` [PATCH v7 05/12] iommu/amd: copy old trans table from old kernel Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13 ` Baoquan He [this message]
2016-11-25  5:13   ` [PATCH v7 06/12] iommu: Add is_attach_deferred call-back to iommu-ops Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13 ` [PATCH v7 07/12] iommu/amd: Use is_attach_deferred call-back Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13 ` [PATCH v7 08/12] iommu/amd: Add sanity check of irq remap information of old dev table entry Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13 ` [PATCH v7 09/12] iommu/amd: Don't copy GCR3 table root pointer Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13 ` [PATCH v7 10/12] iommu/amd: Clear out the GV flag when handle deferred domain attach Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13 ` [PATCH v7 11/12] iommu: Assign the direct mapped domain to group->domain Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13 ` [PATCH v7 12/12] iommu/amd: Allocate memory below 4G for dev table if translation pre-enabled Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-11-25  5:13   ` Baoquan He
2016-12-24  3:47 ` [PATCH v7 00/12] Fix kdump faults on system with amd iommu Baoquan He
2016-12-24  3:47   ` Baoquan He
2016-12-24  3:47   ` Baoquan He

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=1480050799-1237-7-git-send-email-bhe@redhat.com \
    --to=bhe@redhat.com \
    --cc=dyoung@redhat.com \
    --cc=iommu@lists.linux-foundation.org \
    --cc=joro@8bytes.org \
    --cc=kexec@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=xlpang@redhat.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.