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Message-Id: <20201126090603.1511589-1-baolu.lu@linux.intel.com>
Date: Thu, 26 Nov 2020 17:06:03 +0800
From: Lu Baolu <baolu.lu@...ux.intel.com>
To: Will Deacon <will@...nel.org>, Joerg Roedel <joro@...tes.org>
Cc: Stephen Rothwell <sfr@...b.auug.org.au>,
iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
Lu Baolu <baolu.lu@...ux.intel.com>
Subject: [PATCH 1/1] iommu: Fix htmldocs warnings in sysfs-kernel-iommu_groups
Below warnings are fixed:
Documentation/ABI/testing/sysfs-kernel-iommu_groups:38: WARNING: Unexpected indentation.
Documentation/ABI/testing/sysfs-kernel-iommu_groups:38: WARNING: Block quote ends without a blank line; unexpected unindent.
Documentation/ABI/testing/sysfs-kernel-iommu_groups:38: WARNING: Enumerated list ends without a blank line; unexpected unindent.
Documentation/ABI/testing/sysfs-kernel-iommu_groups:38: WARNING: Unexpected indentation.
Documentation/ABI/testing/sysfs-kernel-iommu_groups:38: WARNING: Block quote ends without a blank line; unexpected unindent.
Fixes: 63a816749d86 ("iommu: Document usage of "/sys/kernel/iommu_groups/<grp_id>/type" file")
Reported-by: Stephen Rothwell <sfr@...b.auug.org.au>
Link: https://lore.kernel.org/linux-next/20201126174851.200e0e58@canb.auug.org.au/
Signed-off-by: Lu Baolu <baolu.lu@...ux.intel.com>
---
.../ABI/testing/sysfs-kernel-iommu_groups | 33 ++++++++++---------
1 file changed, 17 insertions(+), 16 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-kernel-iommu_groups b/Documentation/ABI/testing/sysfs-kernel-iommu_groups
index 407b1628d7fd..0fedbb0f94e4 100644
--- a/Documentation/ABI/testing/sysfs-kernel-iommu_groups
+++ b/Documentation/ABI/testing/sysfs-kernel-iommu_groups
@@ -40,23 +40,24 @@ KernelVersion: v5.11
Contact: Sai Praneeth Prakhya <sai.praneeth.prakhya@...el.com>
Description: /sys/kernel/iommu_groups/<grp_id>/type shows the type of default
domain in use by iommu for this group. See include/linux/iommu.h
- for possible values. A privileged user could request kernel to
- change the group type by writing to this file. Presently, only
- three types of request are supported:
- 1. DMA: All the DMA transactions from the device in this group
- are translated by the iommu.
- 2. identity: All the DMA transactions from the device in this
- group are *not* translated by the iommu.
- 3. auto: Change to the type the device was booted with.
- Note:
- -----
+ for possible read values. A privileged user could request kernel to
+ change the group type by writing to this file. Valid write values:
+
+ ======== ======================================================
+ DMA All the DMA transactions from the device in this group
+ are translated by the iommu.
+ identity All the DMA transactions from the device in this group
+ are not translated by the iommu.
+ auto Change to the type the device was booted with.
+ ======== ======================================================
+
The default domain type of a group may be modified only when
- 1. The group has *only* one device
- 2. The device in the group is not bound to any device driver.
- So, the users must unbind the appropriate driver before
- changing the default domain type.
- Caution:
- --------
+
+ - The group has only one device.
+ - The device in the group is not bound to any device driver.
+ So, the users must unbind the appropriate driver before
+ changing the default domain type.
+
Unbinding a device driver will take away the driver's control
over the device and if done on devices that host root file
system could lead to catastrophic effects (the users might
--
2.25.1
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