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Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2022-10-20 17:49:10 -07:00
parent 36875a063b 6d36c728bc
commit 94adb5e29e
696 changed files with 10294 additions and 4828 deletions
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23
Documentation/admin-guide/cgroup-v2.rst
View File

@ -976,6 +976,29 @@ All cgroup core files are prefixed with "cgroup."
killing cgroups is a process directed operation, i.e. it affects
the whole thread-group.
cgroup.pressure
A read-write single value file that allowed values are "0" and "1".
The default is "1".
Writing "0" to the file will disable the cgroup PSI accounting.
Writing "1" to the file will re-enable the cgroup PSI accounting.
This control attribute is not hierarchical, so disable or enable PSI
accounting in a cgroup does not affect PSI accounting in descendants
and doesn't need pass enablement via ancestors from root.
The reason this control attribute exists is that PSI accounts stalls for
each cgroup separately and aggregates it at each level of the hierarchy.
This may cause non-negligible overhead for some workloads when under
deep level of the hierarchy, in which case this control attribute can
be used to disable PSI accounting in the non-leaf cgroups.
irq.pressure
A read-write nested-keyed file.
Shows pressure stall information for IRQ/SOFTIRQ. See
:ref:`Documentation/accounting/psi.rst <psi>` for details.
Controllers
===========

4
Documentation/admin-guide/device-mapper/verity.rst
View File

@ -141,6 +141,10 @@ root_hash_sig_key_desc <key_description>
also gain new certificates at run time if they are signed by a certificate
already in the secondary trusted keyring.
try_verify_in_tasklet
If verity hashes are in cache, verify data blocks in kernel tasklet instead
of workqueue. This option can reduce IO latency.
Theory of operation
===================

2
Documentation/arm64/silicon-errata.rst
View File

@ -76,6 +76,8 @@ stable kernels.
+----------------+-----------------+-----------------+-----------------------------+
| ARM | Cortex-A55 | #1530923 | ARM64_ERRATUM_1530923 |
+----------------+-----------------+-----------------+-----------------------------+
| ARM | Cortex-A55 | #2441007 | ARM64_ERRATUM_2441007 |
+----------------+-----------------+-----------------+-----------------------------+
| ARM | Cortex-A57 | #832075 | ARM64_ERRATUM_832075 |
+----------------+-----------------+-----------------+-----------------------------+
| ARM | Cortex-A57 | #852523 | N/A |

5
Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml
View File

@ -66,6 +66,11 @@ properties:
- enum:
- allwinner,sun20i-d1-plic
- const: thead,c900-plic
- items:
- const: sifive,plic-1.0.0
- const: riscv,plic0
deprecated: true
description: For the QEMU virt machine only
reg:
maxItems: 1

5
Documentation/devicetree/bindings/leds/common.yaml
View File

@ -79,7 +79,8 @@ properties:
the LED.
$ref: /schemas/types.yaml#/definitions/string
enum:
oneOf:
- enum:
# LED will act as a back-light, controlled by the framebuffer system
- backlight
# LED will turn on (but for leds-gpio see "default-state" property in
@ -97,6 +98,8 @@ properties:
# LED alters the brightness for the specified duration with one software
# timer (requires "led-pattern" property)
- pattern
# LED is triggered by SD/MMC activity
- pattern: "^mmc[0-9]+$"
led-pattern:
description: |

5
Documentation/devicetree/bindings/leds/mediatek,mt6370-indicator.yaml
View File

@ -13,9 +13,6 @@ description: |
This module is part of the MT6370 MFD device.
Add MT6370 LED driver include 4-channel RGB LED support Register/PWM/Breath Mode
allOf:
- $ref: leds-class-multicolor.yaml#
properties:
compatible:
const: mediatek,mt6370-indicator
@ -29,6 +26,8 @@ properties:
patternProperties:
"^multi-led@[0-3]$":
type: object
$ref: leds-class-multicolor.yaml#
unevaluatedProperties: false
properties:
reg:

4
Documentation/devicetree/bindings/mfd/mediatek,mt6370.yaml
View File

@ -139,8 +139,8 @@ examples:
charger {
compatible = "mediatek,mt6370-charger";
interrupts = <48>, <68>, <6>;
interrupt-names = "attach_i", "uvp_d_evt", "mivr";
interrupts = <68>, <48>, <6>;
interrupt-names = "uvp_d_evt", "attach_i", "mivr";
io-channels = <&mt6370_adc MT6370_CHAN_IBUS>;
mt6370_otg_vbus: usb-otg-vbus-regulator {

1
Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml
View File

@ -8,7 +8,6 @@ title: Samsung S3FWRN5 NCI NFC Controller
maintainers:
- Krzysztof Kozlowski <krzk@kernel.org>
- Krzysztof Opasiak <k.opasiak@samsung.com>
properties:
compatible:

5
Documentation/devicetree/bindings/riscv/cpus.yaml
View File

@ -9,6 +9,7 @@ title: RISC-V bindings for 'cpus' DT nodes
maintainers:
- Paul Walmsley <paul.walmsley@sifive.com>
- Palmer Dabbelt <palmer@sifive.com>
- Conor Dooley <conor@kernel.org>
description: |
This document uses some terminology common to the RISC-V community
@ -79,9 +80,7 @@ properties:
insensitive, letters in the riscv,isa string must be all
lowercase to simplify parsing.
$ref: "/schemas/types.yaml#/definitions/string"
enum:
- rv64imac
- rv64imafdc
pattern: ^rv(?:64|32)imaf?d?q?c?b?v?k?h?(?:_[hsxz](?:[a-z])+)*$
# RISC-V requires 'timebase-frequency' in /cpus, so disallow it here
timebase-frequency: false

16
Documentation/devicetree/bindings/riscv/microchip.yaml
View File

@ -7,8 +7,8 @@ $schema: http://devicetree.org/meta-schemas/core.yaml#
title: Microchip PolarFire SoC-based boards
maintainers:
- Cyril Jean <Cyril.Jean@microchip.com>
- Lewis Hanly <lewis.hanly@microchip.com>
- Conor Dooley <conor.dooley@microchip.com>
- Daire McNamara <daire.mcnamara@microchip.com>
description:
Microchip PolarFire SoC-based boards
@ -17,10 +17,18 @@ properties:
$nodename:
const: '/'
compatible:
items:
oneOf:
- items:
- enum:
- microchip,mpfs-icicle-kit
- microchip,mpfs-icicle-reference-rtlv2203
- microchip,mpfs-icicle-reference-rtlv2210
- const: microchip,mpfs-icicle-kit
- const: microchip,mpfs
- items:
- enum:
- aries,m100pfsevp
- microchip,mpfs-sev-kit
- sundance,polarberry
- const: microchip,mpfs

28
Documentation/devicetree/bindings/riscv/sifive-l2-cache.yaml → Documentation/devicetree/bindings/riscv/sifive,ccache0.yaml
View File

@ -2,18 +2,18 @@
# Copyright (C) 2020 SiFive, Inc.
%YAML 1.2
---
$id: http://devicetree.org/schemas/riscv/sifive-l2-cache.yaml#
$id: http://devicetree.org/schemas/riscv/sifive,ccache0.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: SiFive L2 Cache Controller
title: SiFive Composable Cache Controller
maintainers:
- Sagar Kadam <sagar.kadam@sifive.com>
- Paul Walmsley <paul.walmsley@sifive.com>
description:
The SiFive Level 2 Cache Controller is used to provide access to fast copies
of memory for masters in a Core Complex. The Level 2 Cache Controller also
The SiFive Composable Cache Controller is used to provide access to fast copies
of memory for masters in a Core Complex. The Composable Cache Controller also
acts as directory-based coherency manager.
All the properties in ePAPR/DeviceTree specification applies for this platform.
@ -22,6 +22,7 @@ select:
compatible:
contains:
enum:
- sifive,ccache0
- sifive,fu540-c000-ccache
- sifive,fu740-c000-ccache
@ -33,6 +34,7 @@ properties:
oneOf:
- items:
- enum:
- sifive,ccache0
- sifive,fu540-c000-ccache
- sifive,fu740-c000-ccache
- const: cache
@ -45,7 +47,7 @@ properties:
const: 64
cache-level:
const: 2
enum: [2, 3]
cache-sets:
enum: [1024, 2048]
@ -115,6 +117,22 @@ allOf:
cache-sets:
const: 1024
- if:
properties:
compatible:
contains:
const: sifive,ccache0
then:
properties:
cache-level:
enum: [2, 3]
else:
properties:
cache-level:
const: 2
additionalProperties: false
required:

8
Documentation/devicetree/bindings/timer/sifive,clint.yaml
View File

@ -22,12 +22,18 @@ description:
properties:
compatible:
items:
oneOf:
- items:
- enum:
- sifive,fu540-c000-clint
- starfive,jh7100-clint
- canaan,k210-clint
- const: sifive,clint0
- items:
- const: sifive,clint0
- const: riscv,clint0
deprecated: true
description: For the QEMU virt machine only
description:
Should be "<vendor>,<chip>-clint" and "sifive,clint<version>".

2
Documentation/filesystems/ubifs.rst
View File

@ -59,7 +59,7 @@ differences.
* JFFS2 is a write-through file-system, while UBIFS supports write-back,
which makes UBIFS much faster on writes.
Similarly to JFFS2, UBIFS supports on-the-flight compression which makes
Similarly to JFFS2, UBIFS supports on-the-fly compression which makes
it possible to fit quite a lot of data to the flash.
Similarly to JFFS2, UBIFS is tolerant of unclean reboots and power-cuts.

20
Documentation/mm/page_owner.rst
View File

@ -38,22 +38,10 @@ not affect to allocation performance, especially if the static keys jump
label patching functionality is available. Following is the kernel's code
size change due to this facility.
- Without page owner::
text data bss dec hex filename
48392 2333 644 51369 c8a9 mm/page_alloc.o
- With page owner::
text data bss dec hex filename
48800 2445 644 51889 cab1 mm/page_alloc.o
6662 108 29 6799 1a8f mm/page_owner.o
1025 8 8 1041 411 mm/page_ext.o
Although, roughly, 8 KB code is added in total, page_alloc.o increase by
520 bytes and less than half of it is in hotpath. Building the kernel with
page owner and turning it on if needed would be great option to debug
kernel memory problem.
Although enabling page owner increases kernel size by several kilobytes,
most of this code is outside page allocator and its hot path. Building
the kernel with page owner and turning it on if needed would be great
option to debug kernel memory problem.
There is one notice that is caused by implementation detail. page owner
stores information into the memory from struct page extension. This memory

2
Documentation/networking/filter.rst
View File

@ -305,7 +305,7 @@ Possible BPF extensions are shown in the following table:
vlan_tci skb_vlan_tag_get(skb)
vlan_avail skb_vlan_tag_present(skb)
vlan_tpid skb->vlan_proto
rand prandom_u32()
rand get_random_u32()
=================================== =================================================
These extensions can also be prefixed with '#'.

2
Documentation/process/howto.rst
View File

@ -379,7 +379,7 @@ to subscribe and unsubscribe from the list can be found at:
There are archives of the mailing list on the web in many different
places. Use a search engine to find these archives. For example:
http://dir.gmane.org/gmane.linux.kernel
https://lore.kernel.org/lkml/
It is highly recommended that you search the archives about the topic
you want to bring up, before you post it to the list. A lot of things

1
Documentation/riscv/index.rst
View File

@ -8,6 +8,7 @@ RISC-V architecture
boot-image-header
vm-layout
patch-acceptance
uabi
features

6
Documentation/riscv/uabi.rst Normal file
View File

@ -0,0 +1,6 @@
.. SPDX-License-Identifier: GPL-2.0
RISC-V Linux User ABI
=====================
Misaligned accesses are supported in userspace, but they may perform poorly.

2
Documentation/tools/rtla/rtla-timerlat-top.rst
View File

@ -39,7 +39,7 @@ higher than *30 us*. It is also set to stop the session if a *Thread* timer
latency higher than *30 us* is hit. Finally, it is set to save the trace
buffer if the stop condition is hit::
[root@alien ~]# rtla timerlat top -s 30 -t 30 -T
[root@alien ~]# rtla timerlat top -s 30 -T 30 -t
Timer Latency
0 00:00:59 | IRQ Timer Latency (us) | Thread Timer Latency (us)
CPU COUNT | cur min avg max | cur min avg max

2
Documentation/trace/ftrace.rst
View File

@ -564,7 +564,7 @@ of ftrace. Here is a list of some of the key files:
start::
trace_fd = open("trace_marker", WR_ONLY);
trace_fd = open("trace_marker", O_WRONLY);
Note: Writing into the trace_marker file can also initiate triggers
that are written into /sys/kernel/tracing/events/ftrace/print/trigger

2
Documentation/translations/it_IT/process/howto.rst
View File

@ -394,7 +394,7 @@ trovati al sito:
Ci sono diversi archivi della lista di discussione. Usate un qualsiasi motore
di ricerca per trovarli. Per esempio:
http://dir.gmane.org/gmane.linux.kernel
https://lore.kernel.org/lkml/
É caldamente consigliata una ricerca in questi archivi sul tema che volete
sollevare, prima di pubblicarlo sulla lista. Molte cose sono già state

2
Documentation/translations/ja_JP/howto.rst
View File

@ -410,7 +410,7 @@ https://bugzilla.kernel.org に行ってください。もし今後のバグレ
このメーリングリストのアーカイブは web 上の多数の場所に存在します。こ
れらのアーカイブを探すにはサーチエンジンを使いましょう。例えば-
http://dir.gmane.org/gmane.linux.kernel
https://lore.kernel.org/lkml/
リストに投稿する前にすでにその話題がアーカイブに存在するかどうかを検索
することを是非やってください。多数の事がすでに詳細に渡って議論されてお

2
Documentation/translations/ko_KR/howto.rst
View File

@ -386,7 +386,7 @@ https://bugzilla.kernel.org 를 체크하고자 할 수도 있다; 소수의 커
웹상의 많은 다른 곳에도 메일링 리스트의 아카이브들이 있다.
이러한 아카이브들을 찾으려면 검색 엔진을 사용하라. 예를 들어:
http://dir.gmane.org/gmane.linux.kernel
https://lore.kernel.org/lkml/
여러분이 새로운 문제에 관해 리스트에 올리기 전에 말하고 싶은 주제에 관한
것을 아카이브에서 먼저 찾아보기를 강력히 권장한다. 이미 상세하게 토론된 많은

29
Documentation/translations/zh_CN/arch.rst Normal file
View File

@ -0,0 +1,29 @@
.. SPDX-License-Identifier: GPL-2.0
处理器体系结构
==============
以下文档提供了具体架构实现的编程细节。
.. toctree::
:maxdepth: 2
mips/index
arm64/index
riscv/index
openrisc/index
parisc/index
loongarch/index
TODOList:
* arm/index
* ia64/index
* m68k/index
* nios2/index
* powerpc/index
* s390/index
* sh/index
* sparc/index
* x86/index
* xtensa/index

2
Documentation/translations/zh_CN/devicetree/changesets.rst
View File

@ -1,7 +1,7 @@
.. SPDX-License-Identifier: GPL-2.0
.. include:: ../disclaimer-zh_CN.rst
:Original: Documentation/Devicetree/changesets.rst
:Original: Documentation/devicetree/changesets.rst
:翻译:

2
Documentation/translations/zh_CN/devicetree/dynamic-resolution-notes.rst
View File

@ -1,7 +1,7 @@
.. SPDX-License-Identifier: GPL-2.0
.. include:: ../disclaimer-zh_CN.rst
:Original: Documentation/Devicetree/dynamic-resolution-notes.rst
:Original: Documentation/devicetree/dynamic-resolution-notes.rst
:翻译:

2
Documentation/translations/zh_CN/devicetree/kernel-api.rst
View File

@ -1,7 +1,7 @@
.. SPDX-License-Identifier: GPL-2.0
.. include:: ../disclaimer-zh_CN.rst
:Original: Documentation/Devicetree/kernel-api.rst
:Original: Documentation/devicetree/kernel-api.rst
:翻译:

2
Documentation/translations/zh_CN/devicetree/overlay-notes.rst
View File

@ -1,7 +1,7 @@
.. SPDX-License-Identifier: GPL-2.0
.. include:: ../disclaimer-zh_CN.rst
:Original: Documentation/Devicetree/overlay-notes.rst
:Original: Documentation/devicetree/overlay-notes.rst
:翻译:

201
Documentation/translations/zh_CN/index.rst
View File

@ -26,30 +26,78 @@
顺便说下，中文文档也需要遵守内核编码风格，风格中中文和英文的主要不同就是中文
的字符标点占用两个英文字符宽度， 所以，当英文要求不要超过每行100个字符时，
中文就不要超过50个字符。另外，也要注意'-'，'=' 等符号与相关标题的对齐。在将
补丁提交到社区之前，一定要进行必要的checkpatch.pl检查和编译测试。
补丁提交到社区之前，一定要进行必要的 ``checkpatch.pl`` 检查和编译测试。
许可证文档
----------
与Linux 内核社区一起工作
------------------------
下面的文档介绍了Linux内核源代码的许可证（GPLv2）、如何在源代码树中正确标记
单个文件的许可证、以及指向完整许可证文本的链接。
* Documentation/translations/zh_CN/process/license-rules.rst
用户文档
--------
下面的手册是为内核用户编写的——即那些试图让它在给定系统上以最佳方式工作的
用户。
与内核开发社区进行协作并将工作推向上游的基本指南。
.. toctree::
:maxdepth: 2
:maxdepth: 1
admin-guide/index
process/development-process
process/submitting-patches
行为准则 <process/code-of-conduct>
maintainer/index
完整开发流程文档 <process/index>
内部API文档
-----------
开发人员使用的内核内部交互接口手册。
.. toctree::
:maxdepth: 1
core-api/index
driver-api/index
内核中的锁 <locking/index>
TODOList:
* kbuild/index
* subsystem-apis
开发工具和流程
--------------
为所有内核开发人员提供有用信息的各种其他手册。
.. toctree::
:maxdepth: 1
process/license-rules
doc-guide/index
dev-tools/index
dev-tools/testing-overview
kernel-hacking/index
TODOList:
* trace/index
* fault-injection/index
* livepatch/index
面向用户的文档
--------------
下列手册针对
希望内核在给定系统上以最佳方式工作的*用户*，
和查找内核用户空间API信息的程序开发人员。
.. toctree::
:maxdepth: 1
admin-guide/index
admin-guide/reporting-issues.rst
TODOList:
* 内核构建系统 <kbuild/index>
* 用户空间工具 <tools/index>
* userspace-api/index
也可参考独立于内核文档的 `Linux 手册页 <https://www.kernel.org/doc/man-pages/>`_ 。
固件相关文档
------------
@ -65,126 +113,13 @@ TODOList:
* firmware-guide/index
应用程序开发人员文档
--------------------
用户空间API手册涵盖了描述应用程序开发人员可见内核接口方面的文档。
TODOlist:
* userspace-api/index
内核开发简介
体系结构文档
------------
这些手册包含有关如何开发内核的整体信息。内核社区非常庞大，一年下来有数千名
开发人员做出贡献。与任何大型社区一样，知道如何完成任务将使得更改合并的过程
变得更加容易。
.. toctree::
:maxdepth: 2
process/index
dev-tools/index
doc-guide/index
kernel-hacking/index
maintainer/index
TODOList:
* trace/index
* fault-injection/index
* livepatch/index
* rust/index
内核API文档
-----------
以下手册从内核开发人员的角度详细介绍了特定的内核子系统是如何工作的。这里的
大部分信息都是直接从内核源代码获取的，并根据需要添加补充材料（或者至少是在
我们设法添加的时候——可能不是所有的都是有需要的）。
.. toctree::
:maxdepth: 2
core-api/index
driver-api/index
locking/index
accounting/index
cpu-freq/index
iio/index
infiniband/index
power/index
virt/index
sound/index
filesystems/index
scheduler/index
mm/index
peci/index
PCI/index
TODOList:
* block/index
* cdrom/index
* ide/index
* fb/index
* fpga/index
* hid/index
* i2c/index
* isdn/index
* leds/index
* netlabel/index
* networking/index
* pcmcia/index
* target/index
* timers/index
* spi/index
* w1/index
* watchdog/index
* input/index
* hwmon/index
* gpu/index
* security/index
* crypto/index
* bpf/index
* usb/index
* scsi/index
* misc-devices/index
* mhi/index
体系结构无关文档
----------------
TODOList:
* asm-annotations
特定体系结构文档
----------------
.. toctree::
:maxdepth: 2
mips/index
arm64/index
riscv/index
openrisc/index
parisc/index
loongarch/index
TODOList:
* arm/index
* ia64/index
* m68k/index
* nios2/index
* powerpc/index
* s390/index
* sh/index
* sparc/index
* x86/index
* xtensa/index
arch
其他文档
--------
@ -195,9 +130,9 @@ TODOList:
TODOList:
* staging/index
* watch_queue
目录和表格
索引和表格
----------
* :ref:`genindex`

2
Documentation/translations/zh_CN/mm/ksm.rst
View File

@ -30,7 +30,7 @@ KSM的用户空间的接口在Documentation/translations/zh_CN/admin-guide/mm/ks
KSM维护着稳定树中的KSM页的逆映射信息。
当KSM页面的共享数小于 ``max_page_sharing`` 的虚拟内存区域(VMAs)时，则代表了
KSM页的稳定树其中的节点指向了一个rmap_item结构体类型的列表。同时，这个KSM页
KSM页的稳定树其中的节点指向了一个ksm_rmap_item结构体类型的列表。同时，这个KSM页
的 ``page->mapping`` 指向了该稳定树节点。
如果共享数超过了阈值，KSM将给稳定树添加第二个维度。稳定树就变成链接一个或多

10
Documentation/translations/zh_CN/mm/page_owner.rst
View File

@ -74,15 +74,19 @@ page owner在默认情况下是禁用的。所以，如果你想使用它，你
cat /sys/kernel/debug/page_owner > page_owner_full.txt
./page_owner_sort page_owner_full.txt sorted_page_owner.txt
``page_owner_full.txt`` 的一般输出情况如下(输出信息无翻译价值)::
``page_owner_full.txt`` 的一般输出情况如下::
Page allocated via order XXX, ...
PFN XXX ...
// Detailed stack
// 栈详情
Page allocated via order XXX, ...
PFN XXX ...
// Detailed stack
// 栈详情
默认情况下，它将以一个给定的pfn开始，做完整的pfn转储，且page_owner支持fseek。
FILE *fp = fopen("/sys/kernel/debug/page_owner", "r");
fseek(fp, pfn_start, SEEK_SET);
``page_owner_sort`` 工具忽略了 ``PFN`` 行，将剩余的行放在buf中，使用regexp提
取页序值，计算buf的次数和页数，最后根据参数进行排序。

2
Documentation/translations/zh_CN/process/howto.rst
View File

@ -306,7 +306,7 @@ bugzilla.kernel.org是Linux内核开发者们用来跟踪内核Bug的网站。
网上很多地方都有这个邮件列表的存档(archive)。可以使用搜索引擎来找到这些
存档。比如：
http://dir.gmane.org/gmane.linux.kernel
https://lore.kernel.org/lkml/
在发信之前，我们强烈建议你先在存档中搜索你想要讨论的问题。很多已经被详细
讨论过的问题只在邮件列表的存档中可以找到。

1
Documentation/translations/zh_CN/process/index.rst
View File

@ -10,6 +10,7 @@
.. _cn_process_index:
========================
与Linux 内核社区一起工作
========================

2
Documentation/translations/zh_TW/process/howto.rst
View File

@ -309,7 +309,7 @@ bugzilla.kernel.org是Linux內核開發者們用來跟蹤內核Bug的網站。
網上很多地方都有這個郵件列表的存檔(archive)。可以使用搜尋引擎來找到這些
存檔。比如：
http://dir.gmane.org/gmane.linux.kernel
https://lore.kernel.org/lkml/
在發信之前，我們強烈建議你先在存檔中搜索你想要討論的問題。很多已經被詳細
討論過的問題只在郵件列表的存檔中可以找到。

38
MAINTAINERS
View File

@ -752,7 +752,7 @@ ALIBABA PMU DRIVER
M: Shuai Xue <xueshuai@linux.alibaba.com>
S: Supported
F: Documentation/admin-guide/perf/alibaba_pmu.rst
F: drivers/perf/alibaba_uncore_dwr_pmu.c
F: drivers/perf/alibaba_uncore_drw_pmu.c
ALIENWARE WMI DRIVER
L: Dell.Client.Kernel@dell.com
@ -4459,13 +4459,15 @@ M: Josef Bacik <josef@toxicpanda.com>
M: David Sterba <dsterba@suse.com>
L: linux-btrfs@vger.kernel.org
S: Maintained
W: http://btrfs.wiki.kernel.org/
Q: http://patchwork.kernel.org/project/linux-btrfs/list/
W: https://btrfs.readthedocs.io
W: https://btrfs.wiki.kernel.org/
Q: https://patchwork.kernel.org/project/linux-btrfs/list/
C: irc://irc.libera.chat/btrfs
T: git git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git
F: Documentation/filesystems/btrfs.rst
F: fs/btrfs/
F: include/linux/btrfs*
F: include/trace/events/btrfs.h
F: include/uapi/linux/btrfs*
BTTV VIDEO4LINUX DRIVER
@ -5266,6 +5268,7 @@ F: tools/testing/selftests/cgroup/
CONTROL GROUP - BLOCK IO CONTROLLER (BLKIO)
M: Tejun Heo <tj@kernel.org>
M: Josef Bacik <josef@toxicpanda.com>
M: Jens Axboe <axboe@kernel.dk>
L: cgroups@vger.kernel.org
L: linux-block@vger.kernel.org
@ -5273,6 +5276,7 @@ T: git git://git.kernel.dk/linux-block
F: Documentation/admin-guide/cgroup-v1/blkio-controller.rst
F: block/bfq-cgroup.c
F: block/blk-cgroup.c
F: block/blk-iocost.c
F: block/blk-iolatency.c
F: block/blk-throttle.c
F: include/linux/blk-cgroup.h
@ -15359,17 +15363,6 @@ L: linux-rdma@vger.kernel.org
S: Supported
F: drivers/infiniband/ulp/opa_vnic
OPEN FIRMWARE AND DEVICE TREE OVERLAYS
M: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
M: Frank Rowand <frowand.list@gmail.com>
L: devicetree@vger.kernel.org
S: Maintained
F: Documentation/devicetree/dynamic-resolution-notes.rst
F: Documentation/devicetree/overlay-notes.rst
F: drivers/of/overlay.c
F: drivers/of/resolver.c
K: of_overlay_notifier_
OPEN FIRMWARE AND FLATTENED DEVICE TREE
M: Rob Herring <robh+dt@kernel.org>
M: Frank Rowand <frowand.list@gmail.com>
@ -15382,6 +15375,9 @@ F: Documentation/ABI/testing/sysfs-firmware-ofw
F: drivers/of/
F: include/linux/of*.h
F: scripts/dtc/
K: of_overlay_notifier_
K: of_overlay_fdt_apply
K: of_overlay_remove
OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS
M: Rob Herring <robh+dt@kernel.org>
@ -15419,7 +15415,7 @@ M: Stafford Horne <shorne@gmail.com>
L: openrisc@lists.librecores.org
S: Maintained
W: http://openrisc.io
T: git git://github.com/openrisc/linux.git
T: git https://github.com/openrisc/linux.git
F: Documentation/devicetree/bindings/openrisc/
F: Documentation/openrisc/
F: arch/openrisc/
@ -17710,6 +17706,7 @@ M: Palmer Dabbelt <palmer@dabbelt.com>
M: Albert Ou <aou@eecs.berkeley.edu>
L: linux-riscv@lists.infradead.org
S: Supported
Q: https://patchwork.kernel.org/project/linux-riscv/list/
P: Documentation/riscv/patch-acceptance.rst
T: git git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux.git
F: arch/riscv/
@ -17721,12 +17718,13 @@ M: Conor Dooley <conor.dooley@microchip.com>
M: Daire McNamara <daire.mcnamara@microchip.com>
L: linux-riscv@lists.infradead.org
S: Supported
F: Documentation/devicetree/bindings/clock/microchip,mpfs.yaml
F: Documentation/devicetree/bindings/clock/microchip,mpfs*.yaml
F: Documentation/devicetree/bindings/gpio/microchip,mpfs-gpio.yaml
F: Documentation/devicetree/bindings/i2c/microchip,corei2c.yaml
F: Documentation/devicetree/bindings/mailbox/microchip,mpfs-mailbox.yaml
F: Documentation/devicetree/bindings/net/can/microchip,mpfs-can.yaml
F: Documentation/devicetree/bindings/pwm/microchip,corepwm.yaml
F: Documentation/devicetree/bindings/riscv/microchip.yaml
F: Documentation/devicetree/bindings/soc/microchip/microchip,mpfs-sys-controller.yaml
F: Documentation/devicetree/bindings/spi/microchip,mpfs-spi.yaml
F: Documentation/devicetree/bindings/usb/microchip,mpfs-musb.yaml
@ -18217,7 +18215,6 @@ F: include/media/drv-intf/s3c_camif.h
SAMSUNG S3FWRN5 NFC DRIVER
M: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
M: Krzysztof Opasiak <k.opasiak@samsung.com>
L: linux-nfc@lists.01.org (subscribers-only)
S: Maintained
F: Documentation/devicetree/bindings/net/nfc/samsung,s3fwrn5.yaml
@ -18523,8 +18520,7 @@ S: Maintained
F: drivers/mmc/host/sdhci-esdhc-imx.c
SECURE ENCRYPTING DEVICE (SED) OPAL DRIVER
M: Jonathan Derrick <jonathan.derrick@intel.com>
M: Revanth Rajashekar <revanth.rajashekar@intel.com>
M: Jonathan Derrick <jonathan.derrick@linux.dev>
L: linux-block@vger.kernel.org
S: Supported
F: block/opal_proto.h
@ -21300,7 +21296,7 @@ L: linux-usb@vger.kernel.org
L: netdev@vger.kernel.org
S: Maintained
W: https://github.com/petkan/pegasus
T: git git://github.com/petkan/pegasus.git
T: git https://github.com/petkan/pegasus.git
F: drivers/net/usb/pegasus.*
USB PHY LAYER
@ -21337,7 +21333,7 @@ L: linux-usb@vger.kernel.org
L: netdev@vger.kernel.org
S: Maintained
W: https://github.com/petkan/rtl8150
T: git git://github.com/petkan/rtl8150.git
T: git https://github.com/petkan/rtl8150.git
F: drivers/net/usb/rtl8150.c
USB SERIAL SUBSYSTEM

6
Makefile
View File

@ -1,8 +1,8 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 6
PATCHLEVEL = 0
PATCHLEVEL = 1
SUBLEVEL = 0
EXTRAVERSION =
EXTRAVERSION = -rc1
NAME = Hurr durr I'ma ninja sloth
# *DOCUMENTATION*
@ -1979,6 +1979,8 @@ endif
single-goals := $(addprefix $(build-dir)/, $(single-no-ko))
KBUILD_MODULES := 1
endif
# Preset locale variables to speed up the build process. Limit locale

2
arch/alpha/kernel/core_marvel.c
View File

@ -803,7 +803,7 @@ void __iomem *marvel_ioportmap (unsigned long addr)
return (void __iomem *)addr;
}
unsigned u8
u8
marvel_ioread8(const void __iomem *xaddr)
{
unsigned long addr = (unsigned long) xaddr;

2
arch/arm/kernel/process.c
View File

@ -371,7 +371,7 @@ static unsigned long sigpage_addr(const struct mm_struct *mm,
slots = ((last - first) >> PAGE_SHIFT) + 1;
offset = get_random_int() % slots;
offset = prandom_u32_max(slots);
addr = first + (offset << PAGE_SHIFT);

2
arch/arm/kernel/signal.c
View File

@ -655,7 +655,7 @@ struct page *get_signal_page(void)
PAGE_SIZE / sizeof(u32));
/* Give the signal return code some randomness */
offset = 0x200 + (get_random_int() & 0x7fc);
offset = 0x200 + (get_random_u16() & 0x7fc);
signal_return_offset = offset;
/* Copy signal return handlers into the page */

8
arch/arm/mach-mmp/devices.c
View File

@ -238,7 +238,7 @@ void pxa_usb_phy_deinit(void __iomem *phy_reg)
static u64 __maybe_unused usb_dma_mask = ~(u32)0;
#if IS_ENABLED(CONFIG_PHY_PXA_USB)
struct resource pxa168_usb_phy_resources[] = {
static struct resource pxa168_usb_phy_resources[] = {
[0] = {
.start = PXA168_U2O_PHYBASE,
.end = PXA168_U2O_PHYBASE + USB_PHY_RANGE,
@ -259,7 +259,7 @@ struct platform_device pxa168_device_usb_phy = {
#endif /* CONFIG_PHY_PXA_USB */
#if IS_ENABLED(CONFIG_USB_MV_UDC)
struct resource pxa168_u2o_resources[] = {
static struct resource pxa168_u2o_resources[] = {
/* regbase */
[0] = {
.start = PXA168_U2O_REGBASE + U2x_CAPREGS_OFFSET,
@ -294,7 +294,7 @@ struct platform_device pxa168_device_u2o = {
#endif /* CONFIG_USB_MV_UDC */
#if IS_ENABLED(CONFIG_USB_EHCI_MV_U2O)
struct resource pxa168_u2oehci_resources[] = {
static struct resource pxa168_u2oehci_resources[] = {
[0] = {
.start = PXA168_U2O_REGBASE,
.end = PXA168_U2O_REGBASE + USB_REG_RANGE,
@ -321,7 +321,7 @@ struct platform_device pxa168_device_u2oehci = {
#endif
#if IS_ENABLED(CONFIG_USB_MV_OTG)
struct resource pxa168_u2ootg_resources[] = {
static struct resource pxa168_u2ootg_resources[] = {
/* regbase */
[0] = {
.start = PXA168_U2O_REGBASE + U2x_CAPREGS_OFFSET,

3
arch/arm/mach-spear/generic.h
View File

@ -25,11 +25,8 @@ extern struct pl022_ssp_controller pl022_plat_data;
extern struct pl08x_platform_data pl080_plat_data;
void __init spear_setup_of_timer(void);
void __init spear3xx_clk_init(void __iomem *misc_base,
void __iomem *soc_config_base);
void __init spear3xx_map_io(void);
void __init spear3xx_dt_init_irq(void);
void __init spear6xx_clk_init(void __iomem *misc_base);
void __init spear13xx_map_io(void);
void __init spear13xx_l2x0_init(void);

1
arch/arm/mach-spear/spear3xx.c
View File

@ -13,6 +13,7 @@
#include <linux/amba/pl022.h>
#include <linux/amba/pl080.h>
#include <linux/clk.h>
#include <linux/clk/spear.h>
#include <linux/io.h>
#include <asm/mach/map.h>
#include "pl080.h"

9
arch/arm/mach-spear/spear6xx.c
View File

@ -12,6 +12,7 @@
#include <linux/amba/pl08x.h>
#include <linux/clk.h>
#include <linux/clk/spear.h>
#include <linux/err.h>
#include <linux/of.h>
#include <linux/of_address.h>
@ -339,7 +340,7 @@ static struct pl08x_platform_data spear6xx_pl080_plat_data = {
* 0xD0000000 0xFD000000
* 0xFC000000 0xFC000000
*/
struct map_desc spear6xx_io_desc[] __initdata = {
static struct map_desc spear6xx_io_desc[] __initdata = {
{
.virtual = (unsigned long)VA_SPEAR6XX_ML_CPU_BASE,
.pfn = __phys_to_pfn(SPEAR_ICM3_ML1_2_BASE),
@ -359,12 +360,12 @@ struct map_desc spear6xx_io_desc[] __initdata = {
};
/* This will create static memory mapping for selected devices */
void __init spear6xx_map_io(void)
static void __init spear6xx_map_io(void)
{
iotable_init(spear6xx_io_desc, ARRAY_SIZE(spear6xx_io_desc));
}
void __init spear6xx_timer_init(void)
static void __init spear6xx_timer_init(void)
{
char pclk_name[] = "pll3_clk";
struct clk *gpt_clk, *pclk;
@ -394,7 +395,7 @@ void __init spear6xx_timer_init(void)
}
/* Add auxdata to pass platform data */
struct of_dev_auxdata spear6xx_auxdata_lookup[] __initdata = {
static struct of_dev_auxdata spear6xx_auxdata_lookup[] __initdata = {
OF_DEV_AUXDATA("arm,pl080", SPEAR_ICM3_DMA_BASE, NULL,
&spear6xx_pl080_plat_data),
{}

17
arch/arm64/Kconfig
View File

@ -632,6 +632,23 @@ config ARM64_ERRATUM_1530923
config ARM64_WORKAROUND_REPEAT_TLBI
bool
config ARM64_ERRATUM_2441007
bool "Cortex-A55: Completion of affected memory accesses might not be guaranteed by completion of a TLBI"
default y
select ARM64_WORKAROUND_REPEAT_TLBI
help
This option adds a workaround for ARM Cortex-A55 erratum #2441007.
Under very rare circumstances, affected Cortex-A55 CPUs
may not handle a race between a break-before-make sequence on one
CPU, and another CPU accessing the same page. This could allow a
store to a page that has been unmapped.
Work around this by adding the affected CPUs to the list that needs
TLB sequences to be done twice.
If unsure, say Y.
config ARM64_ERRATUM_1286807
bool "Cortex-A76: Modification of the translation table for a virtual address might lead to read-after-read ordering violation"
default y

4
arch/arm64/include/asm/cputype.h
View File

@ -60,6 +60,7 @@
#define ARM_CPU_IMP_FUJITSU 0x46
#define ARM_CPU_IMP_HISI 0x48
#define ARM_CPU_IMP_APPLE 0x61
#define ARM_CPU_IMP_AMPERE 0xC0
#define ARM_CPU_PART_AEM_V8 0xD0F
#define ARM_CPU_PART_FOUNDATION 0xD00
@ -123,6 +124,8 @@
#define APPLE_CPU_PART_M1_ICESTORM_MAX 0x028
#define APPLE_CPU_PART_M1_FIRESTORM_MAX 0x029
#define AMPERE_CPU_PART_AMPERE1 0xAC3
#define MIDR_CORTEX_A53 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A53)
#define MIDR_CORTEX_A57 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A57)
#define MIDR_CORTEX_A72 MIDR_CPU_MODEL(ARM_CPU_IMP_ARM, ARM_CPU_PART_CORTEX_A72)
@ -172,6 +175,7 @@
#define MIDR_APPLE_M1_FIRESTORM_PRO MIDR_CPU_MODEL(ARM_CPU_IMP_APPLE, APPLE_CPU_PART_M1_FIRESTORM_PRO)
#define MIDR_APPLE_M1_ICESTORM_MAX MIDR_CPU_MODEL(ARM_CPU_IMP_APPLE, APPLE_CPU_PART_M1_ICESTORM_MAX)
#define MIDR_APPLE_M1_FIRESTORM_MAX MIDR_CPU_MODEL(ARM_CPU_IMP_APPLE, APPLE_CPU_PART_M1_FIRESTORM_MAX)
#define MIDR_AMPERE1 MIDR_CPU_MODEL(ARM_CPU_IMP_AMPERE, AMPERE_CPU_PART_AMPERE1)
/* Fujitsu Erratum 010001 affects A64FX 1.0 and 1.1, (v0r0 and v1r0) */
#define MIDR_FUJITSU_ERRATUM_010001 MIDR_FUJITSU_A64FX

5
arch/arm64/kernel/cpu_errata.c
View File

@ -230,6 +230,11 @@ static const struct arm64_cpu_capabilities arm64_repeat_tlbi_list[] = {
ERRATA_MIDR_RANGE(MIDR_QCOM_KRYO_4XX_GOLD, 0xc, 0xe, 0xf, 0xe),
},
#endif
#ifdef CONFIG_ARM64_ERRATUM_2441007
{
ERRATA_MIDR_ALL_VERSIONS(MIDR_CORTEX_A55),
},
#endif
#ifdef CONFIG_ARM64_ERRATUM_2441009
{
/* Cortex-A510 r0p0 -> r1p1. Fixed in r1p2 */

7
arch/arm64/kernel/mte.c
View File

@ -48,6 +48,11 @@ static void mte_sync_page_tags(struct page *page, pte_t old_pte,
if (!pte_is_tagged)
return;
/*
* Test PG_mte_tagged again in case it was racing with another
* set_pte_at().
*/
if (!test_and_set_bit(PG_mte_tagged, &page->flags))
mte_clear_page_tags(page_address(page));
}
@ -64,7 +69,7 @@ void mte_sync_tags(pte_t old_pte, pte_t pte)
/* if PG_mte_tagged is set, tags have already been initialised */
for (i = 0; i < nr_pages; i++, page++) {
if (!test_and_set_bit(PG_mte_tagged, &page->flags))
if (!test_bit(PG_mte_tagged, &page->flags))
mte_sync_page_tags(page, old_pte, check_swap,
pte_is_tagged);
}

2
arch/arm64/kernel/process.c
View File

@ -591,7 +591,7 @@ unsigned long __get_wchan(struct task_struct *p)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
sp -= get_random_int() & ~PAGE_MASK;
sp -= prandom_u32_max(PAGE_SIZE);
return sp & ~0xf;
}

6
arch/arm64/kernel/proton-pack.c
View File

@ -868,6 +868,10 @@ u8 spectre_bhb_loop_affected(int scope)
MIDR_ALL_VERSIONS(MIDR_NEOVERSE_N1),
{},
};
static const struct midr_range spectre_bhb_k11_list[] = {
MIDR_ALL_VERSIONS(MIDR_AMPERE1),
{},
};
static const struct midr_range spectre_bhb_k8_list[] = {
MIDR_ALL_VERSIONS(MIDR_CORTEX_A72),
MIDR_ALL_VERSIONS(MIDR_CORTEX_A57),
@ -878,6 +882,8 @@ u8 spectre_bhb_loop_affected(int scope)
k = 32;
else if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k24_list))
k = 24;
else if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k11_list))
k = 11;
else if (is_midr_in_range_list(read_cpuid_id(), spectre_bhb_k8_list))
k = 8;

2
arch/arm64/kernel/syscall.c
View File

@ -67,7 +67,7 @@ static void invoke_syscall(struct pt_regs *regs, unsigned int scno,
*
* The resulting 5 bits of entropy is seen in SP[8:4].
*/
choose_random_kstack_offset(get_random_int() & 0x1FF);
choose_random_kstack_offset(get_random_u16() & 0x1FF);
}
static inline bool has_syscall_work(unsigned long flags)

5
arch/arm64/mm/mteswap.c
View File

@ -53,6 +53,11 @@ bool mte_restore_tags(swp_entry_t entry, struct page *page)
if (!tags)
return false;
/*
* Test PG_mte_tagged again in case it was racing with another
* set_pte_at().
*/
if (!test_and_set_bit(PG_mte_tagged, &page->flags))
mte_restore_page_tags(page_address(page), tags);
return true;

2
arch/arm64/tools/sysreg
View File

@ -732,7 +732,7 @@ EndSysreg
Sysreg SCTLR_EL1 3 0 1 0 0
Field 63 TIDCP
Field 62 SPINMASK
Field 62 SPINTMASK
Field 61 NMI
Field 60 EnTP2
Res0 59:58

3
arch/loongarch/include/asm/pgtable.h
View File

@ -412,6 +412,9 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
__update_tlb(vma, address, ptep);
}
#define __HAVE_ARCH_UPDATE_MMU_TLB
#define update_mmu_tlb update_mmu_cache
static inline void update_mmu_cache_pmd(struct vm_area_struct *vma,
unsigned long address, pmd_t *pmdp)
{

2
arch/loongarch/kernel/process.c
View File

@ -293,7 +293,7 @@ unsigned long stack_top(void)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
sp -= get_random_int() & ~PAGE_MASK;
sp -= prandom_u32_max(PAGE_SIZE);
return sp & STACK_ALIGN;
}

2
arch/loongarch/kernel/vdso.c
View File

@ -78,7 +78,7 @@ static unsigned long vdso_base(void)
unsigned long base = STACK_TOP;
if (current->flags & PF_RANDOMIZE) {
base += get_random_int() & (VDSO_RANDOMIZE_SIZE - 1);
base += prandom_u32_max(VDSO_RANDOMIZE_SIZE);
base = PAGE_ALIGN(base);
}

2
arch/mips/kernel/process.c
View File

@ -711,7 +711,7 @@ unsigned long mips_stack_top(void)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
sp -= get_random_int() & ~PAGE_MASK;
sp -= prandom_u32_max(PAGE_SIZE);
return sp & ALMASK;
}

2
arch/mips/kernel/vdso.c
View File

@ -79,7 +79,7 @@ static unsigned long vdso_base(void)
}
if (current->flags & PF_RANDOMIZE) {
base += get_random_int() & (VDSO_RANDOMIZE_SIZE - 1);
base += prandom_u32_max(VDSO_RANDOMIZE_SIZE);
base = PAGE_ALIGN(base);
}

16
arch/openrisc/kernel/dma.c
View File

@ -74,10 +74,10 @@ void *arch_dma_set_uncached(void *cpu_addr, size_t size)
* We need to iterate through the pages, clearing the dcache for
* them and setting the cache-inhibit bit.
*/
mmap_read_lock(&init_mm);
error = walk_page_range(&init_mm, va, va + size, &set_nocache_walk_ops,
NULL);
mmap_read_unlock(&init_mm);
mmap_write_lock(&init_mm);
error = walk_page_range_novma(&init_mm, va, va + size,
&set_nocache_walk_ops, NULL, NULL);
mmap_write_unlock(&init_mm);
if (error)
return ERR_PTR(error);
@ -88,11 +88,11 @@ void arch_dma_clear_uncached(void *cpu_addr, size_t size)
{
unsigned long va = (unsigned long)cpu_addr;
mmap_read_lock(&init_mm);
mmap_write_lock(&init_mm);
/* walk_page_range shouldn't be able to fail here */
WARN_ON(walk_page_range(&init_mm, va, va + size,
&clear_nocache_walk_ops, NULL));
mmap_read_unlock(&init_mm);
WARN_ON(walk_page_range_novma(&init_mm, va, va + size,
&clear_nocache_walk_ops, NULL, NULL));
mmap_write_unlock(&init_mm);
}
void arch_sync_dma_for_device(phys_addr_t addr, size_t size,

21
arch/parisc/include/asm/alternative.h
View File

@ -22,10 +22,10 @@
struct alt_instr {
s32 orig_offset; /* offset to original instructions */
s32 len; /* end of original instructions */
u32 cond; /* see ALT_COND_XXX */
s16 len; /* end of original instructions */
u16 cond; /* see ALT_COND_XXX */
u32 replacement; /* replacement instruction or code */
};
} __packed;
void set_kernel_text_rw(int enable_read_write);
void apply_alternatives_all(void);
@ -35,8 +35,9 @@ void apply_alternatives(struct alt_instr *start, struct alt_instr *end,
/* Alternative SMP implementation. */
#define ALTERNATIVE(cond, replacement) "!0:" \
".section .altinstructions, \"aw\" !" \
".word (0b-4-.), 1, " __stringify(cond) "," \
__stringify(replacement) " !" \
".word (0b-4-.) !" \
".hword 1, " __stringify(cond) " !" \
".word " __stringify(replacement) " !" \
".previous"
#else
@ -44,15 +45,17 @@ void apply_alternatives(struct alt_instr *start, struct alt_instr *end,
/* to replace one single instructions by a new instruction */
#define ALTERNATIVE(from, to, cond, replacement)\
.section .altinstructions, "aw" ! \
.word (from - .), (to - from)/4 ! \
.word cond, replacement ! \
.word (from - .) ! \
.hword (to - from)/4, cond ! \
.word replacement ! \
.previous
/* to replace multiple instructions by new code */
#define ALTERNATIVE_CODE(from, num_instructions, cond, new_instr_ptr)\
.section .altinstructions, "aw" ! \
.word (from - .), -num_instructions ! \
.word cond, (new_instr_ptr - .) ! \
.word (from - .) ! \
.hword -num_instructions, cond ! \
.word (new_instr_ptr - .) ! \
.previous
#endif /* __ASSEMBLY__ */

3
arch/parisc/include/asm/pdc.h
View File

@ -19,9 +19,6 @@ extern unsigned long parisc_pat_pdc_cap; /* PDC capabilities (PAT) */
#define PDC_TYPE_SYSTEM_MAP 1 /* 32-bit, but supports PDC_SYSTEM_MAP */
#define PDC_TYPE_SNAKE 2 /* Doesn't support SYSTEM_MAP */
void pdc_console_init(void); /* in pdc_console.c */
void pdc_console_restart(void);
void setup_pdc(void); /* in inventory.c */
/* wrapper-functions from pdc.c */

7
arch/parisc/include/asm/pgtable.h
View File

@ -192,6 +192,11 @@ extern void __update_cache(pte_t pte);
#define _PAGE_PRESENT_BIT 22 /* (0x200) Software: translation valid */
#define _PAGE_HPAGE_BIT 21 /* (0x400) Software: Huge Page */
#define _PAGE_USER_BIT 20 /* (0x800) Software: User accessible page */
#ifdef CONFIG_HUGETLB_PAGE
#define _PAGE_SPECIAL_BIT _PAGE_DMB_BIT /* DMB feature is currently unused */
#else
#define _PAGE_SPECIAL_BIT _PAGE_HPAGE_BIT /* use unused HUGE PAGE bit */
#endif
/* N.B. The bits are defined in terms of a 32 bit word above, so the */
/* following macro is ok for both 32 and 64 bit. */
@ -219,7 +224,7 @@ extern void __update_cache(pte_t pte);
#define _PAGE_PRESENT (1 << xlate_pabit(_PAGE_PRESENT_BIT))
#define _PAGE_HUGE (1 << xlate_pabit(_PAGE_HPAGE_BIT))
#define _PAGE_USER (1 << xlate_pabit(_PAGE_USER_BIT))
#define _PAGE_SPECIAL (_PAGE_DMB)
#define _PAGE_SPECIAL (1 << xlate_pabit(_PAGE_SPECIAL_BIT))
#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | _PAGE_DIRTY | _PAGE_ACCESSED)
#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_SPECIAL)

7
arch/parisc/kernel/alternative.c
View File

@ -26,7 +26,7 @@ void __init_or_module apply_alternatives(struct alt_instr *start,
struct alt_instr *entry;
int index = 0, applied = 0;
int num_cpus = num_online_cpus();
u32 cond_check;
u16 cond_check;
cond_check = ALT_COND_ALWAYS |
((num_cpus == 1) ? ALT_COND_NO_SMP : 0) |
@ -45,8 +45,9 @@ void __init_or_module apply_alternatives(struct alt_instr *start,
for (entry = start; entry < end; entry++, index++) {
u32 *from, cond, replacement;
s32 len;
u32 *from, replacement;
u16 cond;
s16 len;
from = (u32 *)((ulong)&entry->orig_offset + entry->orig_offset);
len = entry->len;

8
arch/parisc/kernel/entry.S
View File

@ -499,6 +499,10 @@
* Finally, _PAGE_READ goes in the top bit of PL1 (so we
* trigger an access rights trap in user space if the user
* tries to read an unreadable page */
#if _PAGE_SPECIAL_BIT == _PAGE_DMB_BIT
/* need to drop DMB bit, as it's used as SPECIAL flag */
depi 0,_PAGE_SPECIAL_BIT,1,\pte
#endif
depd \pte,8,7,\prot
/* PAGE_USER indicates the page can be read with user privileges,
@ -529,6 +533,10 @@
* makes the tlb entry for the differently formatted pa11
* insertion instructions */
.macro make_insert_tlb_11 spc,pte,prot
#if _PAGE_SPECIAL_BIT == _PAGE_DMB_BIT
/* need to drop DMB bit, as it's used as SPECIAL flag */
depi 0,_PAGE_SPECIAL_BIT,1,\pte
#endif
zdep \spc,30,15,\prot
dep \pte,8,7,\prot
extru,= \pte,_PAGE_NO_CACHE_BIT,1,%r0

238
arch/parisc/kernel/pdc_cons.c
View File

@ -1,46 +1,18 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* PDC Console support - ie use firmware to dump text via boot console
* PDC early console support - use PDC firmware to dump text via boot console
*
* Copyright (C) 1999-2003 Matthew Wilcox <willy at parisc-linux.org>
* Copyright (C) 2000 Martin K Petersen <mkp at mkp.net>
* Copyright (C) 2000 John Marvin <jsm at parisc-linux.org>
* Copyright (C) 2000-2003 Paul Bame <bame at parisc-linux.org>
* Copyright (C) 2000 Philipp Rumpf <prumpf with tux.org>
* Copyright (C) 2000 Michael Ang <mang with subcarrier.org>
* Copyright (C) 2000 Grant Grundler <grundler with parisc-linux.org>
* Copyright (C) 2001-2002 Ryan Bradetich <rbrad at parisc-linux.org>
* Copyright (C) 2001 Helge Deller <deller at parisc-linux.org>
* Copyright (C) 2001 Thomas Bogendoerfer <tsbogend at parisc-linux.org>
* Copyright (C) 2002 Randolph Chung <tausq with parisc-linux.org>
* Copyright (C) 2010 Guy Martin <gmsoft at tuxicoman.be>
* Copyright (C) 2001-2022 Helge Deller <deller@gmx.de>
*/
/*
* The PDC console is a simple console, which can be used for debugging
* boot related problems on HP PA-RISC machines. It is also useful when no
* other console works.
*
* This code uses the ROM (=PDC) based functions to read and write characters
* from and to PDC's boot path.
*/
/* Define EARLY_BOOTUP_DEBUG to debug kernel related boot problems.
* On production kernels EARLY_BOOTUP_DEBUG should be undefined. */
#define EARLY_BOOTUP_DEBUG
#include <linux/kernel.h>
#include <linux/console.h>
#include <linux/string.h>
#include <linux/init.h>
#include <linux/major.h>
#include <linux/tty.h>
#include <linux/serial_core.h>
#include <linux/kgdb.h>
#include <asm/page.h> /* for PAGE0 */
#include <asm/pdc.h> /* for iodc_call() proto and friends */
static DEFINE_SPINLOCK(pdc_console_lock);
static struct console pdc_cons;
static void pdc_console_write(struct console *co, const char *s, unsigned count)
{
@ -54,7 +26,8 @@ static void pdc_console_write(struct console *co, const char *s, unsigned count)
spin_unlock_irqrestore(&pdc_console_lock, flags);
}
int pdc_console_poll_key(struct console *co)
#ifdef CONFIG_KGDB
static int kgdb_pdc_read_char(void)
{
int c;
unsigned long flags;
@ -63,201 +36,40 @@ int pdc_console_poll_key(struct console *co)
c = pdc_iodc_getc();
spin_unlock_irqrestore(&pdc_console_lock, flags);
return c;
return (c <= 0) ? NO_POLL_CHAR : c;
}
static int pdc_console_setup(struct console *co, char *options)
static void kgdb_pdc_write_char(u8 chr)
{
return 0;
if (PAGE0->mem_cons.cl_class != CL_DUPLEX)
pdc_console_write(NULL, &chr, 1);
}
#if defined(CONFIG_PDC_CONSOLE)
#include <linux/vt_kern.h>
#include <linux/tty_flip.h>
#define PDC_CONS_POLL_DELAY (30 * HZ / 1000)
static void pdc_console_poll(struct timer_list *unused);
static DEFINE_TIMER(pdc_console_timer, pdc_console_poll);
static struct tty_port tty_port;
static int pdc_console_tty_open(struct tty_struct *tty, struct file *filp)
{
tty_port_tty_set(&tty_port, tty);
mod_timer(&pdc_console_timer, jiffies + PDC_CONS_POLL_DELAY);
return 0;
}
static void pdc_console_tty_close(struct tty_struct *tty, struct file *filp)
{
if (tty->count == 1) {
del_timer_sync(&pdc_console_timer);
tty_port_tty_set(&tty_port, NULL);
}
}
static int pdc_console_tty_write(struct tty_struct *tty, const unsigned char *buf, int count)
{
pdc_console_write(NULL, buf, count);
return count;
}
static unsigned int pdc_console_tty_write_room(struct tty_struct *tty)
{
return 32768; /* no limit, no buffer used */
}
static const struct tty_operations pdc_console_tty_ops = {
.open = pdc_console_tty_open,
.close = pdc_console_tty_close,
.write = pdc_console_tty_write,
.write_room = pdc_console_tty_write_room,
static struct kgdb_io kgdb_pdc_io_ops = {
.name = "kgdb_pdc",
.read_char = kgdb_pdc_read_char,
.write_char = kgdb_pdc_write_char,
};
static void pdc_console_poll(struct timer_list *unused)
{
int data, count = 0;
while (1) {
data = pdc_console_poll_key(NULL);
if (data == -1)
break;
tty_insert_flip_char(&tty_port, data & 0xFF, TTY_NORMAL);
count ++;
}
if (count)
tty_flip_buffer_push(&tty_port);
if (pdc_cons.flags & CON_ENABLED)
mod_timer(&pdc_console_timer, jiffies + PDC_CONS_POLL_DELAY);
}
static struct tty_driver *pdc_console_tty_driver;
static int __init pdc_console_tty_driver_init(void)
{
struct tty_driver *driver;
int err;
/* Check if the console driver is still registered.
* It is unregistered if the pdc console was not selected as the
* primary console. */
struct console *tmp;
console_lock();
for_each_console(tmp)
if (tmp == &pdc_cons)
break;
console_unlock();
if (!tmp) {
printk(KERN_INFO "PDC console driver not registered anymore, not creating %s\n", pdc_cons.name);
return -ENODEV;
}
printk(KERN_INFO "The PDC console driver is still registered, removing CON_BOOT flag\n");
pdc_cons.flags &= ~CON_BOOT;
driver = tty_alloc_driver(1, TTY_DRIVER_REAL_RAW |
TTY_DRIVER_RESET_TERMIOS);
if (IS_ERR(driver))
return PTR_ERR(driver);
tty_port_init(&tty_port);
driver->driver_name = "pdc_cons";
driver->name = "ttyB";
driver->major = MUX_MAJOR;
driver->minor_start = 0;
driver->type = TTY_DRIVER_TYPE_SYSTEM;
driver->init_termios = tty_std_termios;
tty_set_operations(driver, &pdc_console_tty_ops);
tty_port_link_device(&tty_port, driver, 0);
err = tty_register_driver(driver);
if (err) {
printk(KERN_ERR "Unable to register the PDC console TTY driver\n");
tty_port_destroy(&tty_port);
tty_driver_kref_put(driver);
return err;
}
pdc_console_tty_driver = driver;
return 0;
}
device_initcall(pdc_console_tty_driver_init);
static struct tty_driver * pdc_console_device (struct console *c, int *index)
{
*index = c->index;
return pdc_console_tty_driver;
}
#else
#define pdc_console_device NULL
#endif
static struct console pdc_cons = {
.name = "ttyB",
.write = pdc_console_write,
.device = pdc_console_device,
.setup = pdc_console_setup,
.flags = CON_BOOT | CON_PRINTBUFFER,
.index = -1,
};
static int pdc_console_initialized;
static void pdc_console_init_force(void)
static int __init pdc_earlycon_setup(struct earlycon_device *device,
const char *opt)
{
if (pdc_console_initialized)
return;
++pdc_console_initialized;
struct console *earlycon_console;
/* If the console is duplex then copy the COUT parameters to CIN. */
if (PAGE0->mem_cons.cl_class == CL_DUPLEX)
memcpy(&PAGE0->mem_kbd, &PAGE0->mem_cons, sizeof(PAGE0->mem_cons));
/* register the pdc console */
register_console(&pdc_cons);
}
earlycon_console = device->con;
earlycon_console->write = pdc_console_write;
device->port.iotype = UPIO_MEM32BE;
void __init pdc_console_init(void)
{
#if defined(EARLY_BOOTUP_DEBUG) || defined(CONFIG_PDC_CONSOLE)
pdc_console_init_force();
#endif
#ifdef EARLY_BOOTUP_DEBUG
printk(KERN_INFO "Initialized PDC Console for debugging.\n");
#ifdef CONFIG_KGDB
kgdb_register_io_module(&kgdb_pdc_io_ops);
#endif
return 0;
}
/*
* Used for emergencies. Currently only used if an HPMC occurs. If an
* HPMC occurs, it is possible that the current console may not be
* properly initialised after the PDC IO reset. This routine unregisters
* all of the current consoles, reinitializes the pdc console and
* registers it.
*/
void pdc_console_restart(void)
{
struct console *console;
if (pdc_console_initialized)
return;
/* If we've already seen the output, don't bother to print it again */
if (console_drivers != NULL)
pdc_cons.flags &= ~CON_PRINTBUFFER;
while ((console = console_drivers) != NULL)
unregister_console(console_drivers);
/* force registering the pdc console */
pdc_console_init_force();
}
EARLYCON_DECLARE(pdc, pdc_earlycon_setup);

2
arch/parisc/kernel/process.c
View File

@ -284,7 +284,7 @@ __get_wchan(struct task_struct *p)
static inline unsigned long brk_rnd(void)
{
return (get_random_int() & BRK_RND_MASK) << PAGE_SHIFT;
return (get_random_u32() & BRK_RND_MASK) << PAGE_SHIFT;
}
unsigned long arch_randomize_brk(struct mm_struct *mm)

6
arch/parisc/kernel/setup.c
View File

@ -70,6 +70,10 @@ void __init setup_cmdline(char **cmdline_p)
strlcat(p, "tty0", COMMAND_LINE_SIZE);
}
/* default to use early console */
if (!strstr(p, "earlycon"))
strlcat(p, " earlycon=pdc", COMMAND_LINE_SIZE);
#ifdef CONFIG_BLK_DEV_INITRD
if (boot_args[2] != 0) /* did palo pass us a ramdisk? */
{
@ -139,8 +143,6 @@ void __init setup_arch(char **cmdline_p)
if (__pa((unsigned long) &_end) >= KERNEL_INITIAL_SIZE)
panic("KERNEL_INITIAL_ORDER too small!");
pdc_console_init();
#ifdef CONFIG_64BIT
if(parisc_narrow_firmware) {
printk(KERN_INFO "Kernel is using PDC in 32-bit mode.\n");

4
arch/parisc/kernel/sys_parisc.c
View File

@ -239,14 +239,14 @@ static unsigned long mmap_rnd(void)
unsigned long rnd = 0;
if (current->flags & PF_RANDOMIZE)
rnd = get_random_int() & MMAP_RND_MASK;
rnd = get_random_u32() & MMAP_RND_MASK;
return rnd << PAGE_SHIFT;
}
unsigned long arch_mmap_rnd(void)
{
return (get_random_int() & MMAP_RND_MASK) << PAGE_SHIFT;
return (get_random_u32() & MMAP_RND_MASK) << PAGE_SHIFT;
}
static unsigned long mmap_legacy_base(void)

15
arch/parisc/kernel/traps.c
View File

@ -239,13 +239,6 @@ void die_if_kernel(char *str, struct pt_regs *regs, long err)
/* unlock the pdc lock if necessary */
pdc_emergency_unlock();
/* maybe the kernel hasn't booted very far yet and hasn't been able
* to initialize the serial or STI console. In that case we should
* re-enable the pdc console, so that the user will be able to
* identify the problem. */
if (!console_drivers)
pdc_console_restart();
if (err)
printk(KERN_CRIT "%s (pid %d): %s (code %ld)\n",
current->comm, task_pid_nr(current), str, err);
@ -429,10 +422,6 @@ void parisc_terminate(char *msg, struct pt_regs *regs, int code, unsigned long o
/* unlock the pdc lock if necessary */
pdc_emergency_unlock();
/* restart pdc console if necessary */
if (!console_drivers)
pdc_console_restart();
/* Not all paths will gutter the processor... */
switch(code){
@ -482,9 +471,7 @@ void notrace handle_interruption(int code, struct pt_regs *regs)
unsigned long fault_space = 0;
int si_code;
if (code == 1)
pdc_console_restart(); /* switch back to pdc if HPMC */
else if (!irqs_disabled_flags(regs->gr[0]))
if (!irqs_disabled_flags(regs->gr[0]))
local_irq_enable();
/* Security check:

2
arch/parisc/kernel/vdso.c
View File

@ -75,7 +75,7 @@ int arch_setup_additional_pages(struct linux_binprm *bprm,
map_base = mm->mmap_base;
if (current->flags & PF_RANDOMIZE)
map_base -= (get_random_int() & 0x1f) * PAGE_SIZE;
map_base -= prandom_u32_max(0x20) * PAGE_SIZE;
vdso_text_start = get_unmapped_area(NULL, map_base, vdso_text_len, 0, 0);

2
arch/powerpc/crypto/crc-vpmsum_test.c
View File

@ -82,7 +82,7 @@ static int __init crc_test_init(void)
if (len <= offset)
continue;
prandom_bytes(data, len);
get_random_bytes(data, len);
len -= offset;
crypto_shash_update(crct10dif_shash, data+offset, len);

16
arch/powerpc/include/asm/syscalls.h
View File

@ -89,6 +89,22 @@ long compat_sys_rt_sigreturn(void);
* responsible for combining parameter pairs.
*/
#ifdef CONFIG_PPC32
long sys_ppc_pread64(unsigned int fd,
char __user *ubuf, compat_size_t count,
u32 reg6, u32 pos1, u32 pos2);
long sys_ppc_pwrite64(unsigned int fd,
const char __user *ubuf, compat_size_t count,
u32 reg6, u32 pos1, u32 pos2);
long sys_ppc_readahead(int fd, u32 r4,
u32 offset1, u32 offset2, u32 count);
long sys_ppc_truncate64(const char __user *path, u32 reg4,
unsigned long len1, unsigned long len2);
long sys_ppc_ftruncate64(unsigned int fd, u32 reg4,
unsigned long len1, unsigned long len2);
long sys_ppc32_fadvise64(int fd, u32 unused, u32 offset1, u32 offset2,
size_t len, int advice);
#endif
#ifdef CONFIG_COMPAT
long compat_sys_mmap2(unsigned long addr, size_t len,
unsigned long prot, unsigned long flags,

1
arch/powerpc/kernel/Makefile
View File

@ -73,6 +73,7 @@ obj-y := cputable.o syscalls.o \
obj-y += ptrace/
obj-$(CONFIG_PPC64) += setup_64.o irq_64.o\
paca.o nvram_64.o note.o
obj-$(CONFIG_PPC32) += sys_ppc32.o
obj-$(CONFIG_COMPAT) += sys_ppc32.o signal_32.o
obj-$(CONFIG_VDSO32) += vdso32_wrapper.o
obj-$(CONFIG_PPC_WATCHDOG) += watchdog.o

15
arch/powerpc/kernel/interrupt_64.S
View File

@ -538,7 +538,7 @@ _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_kernel)
beq .Lfast_kernel_interrupt_return_\srr\() // EE already disabled
lbz r11,PACAIRQHAPPENED(r13)
andi. r10,r11,PACA_IRQ_MUST_HARD_MASK
beq 1f // No HARD_MASK pending
beq .Lfast_kernel_interrupt_return_\srr\() // No HARD_MASK pending
/* Must clear MSR_EE from _MSR */
#ifdef CONFIG_PPC_BOOK3S
@ -555,12 +555,23 @@ _ASM_NOKPROBE_SYMBOL(interrupt_return_\srr\()_kernel)
b .Lfast_kernel_interrupt_return_\srr\()
.Linterrupt_return_\srr\()_soft_enabled:
/*
* In the soft-enabled case, need to double-check that we have no
* pending interrupts that might have come in before we reached the
* restart section of code, and restart the exit so those can be
* handled.
*
* If there are none, it is be possible that the interrupt still
* has PACA_IRQ_HARD_DIS set, which needs to be cleared for the
* interrupted context. This clear will not clobber a new pending
* interrupt coming in, because we're in the restart section, so
* such would return to the restart location.
*/
#ifdef CONFIG_PPC_BOOK3S
lbz r11,PACAIRQHAPPENED(r13)
andi. r11,r11,(~PACA_IRQ_HARD_DIS)@l
bne- interrupt_return_\srr\()_kernel_restart
#endif
1:
li r11,0
stb r11,PACAIRQHAPPENED(r13) // clear the possible HARD_DIS

2
arch/powerpc/kernel/process.c
View File

@ -2303,6 +2303,6 @@ void notrace __ppc64_runlatch_off(void)
unsigned long arch_align_stack(unsigned long sp)
{
if (!(current->personality & ADDR_NO_RANDOMIZE) && randomize_va_space)
sp -= get_random_int() & ~PAGE_MASK;
sp -= prandom_u32_max(PAGE_SIZE);
return sp & ~0xf;
}

38
arch/powerpc/kernel/sys_ppc32.c
View File

@ -1,13 +1,23 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/*
* sys_ppc32.c: Conversion between 32bit and 64bit native syscalls.
* sys_ppc32.c: 32-bit system calls with complex calling conventions.
*
* Copyright (C) 2001 IBM
* Copyright (C) 1997,1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
*
* These routines maintain argument size conversion between 32bit and 64bit
* environment.
* 32-bit system calls with 64-bit arguments pass those in register pairs.
* This must be specially dealt with on 64-bit kernels. The compat_arg_u64_dual
* in generic compat syscalls is not always usable because the register
* pairing is constrained depending on preceding arguments.
*
* An analogous problem exists on 32-bit kernels with ARCH_HAS_SYSCALL_WRAPPER,
* the defined system call functions take the pt_regs as an argument, and there
* is a mapping macro which maps registers to arguments
* (SC_POWERPC_REGS_TO_ARGS) which also does not deal with these 64-bit
* arguments.
*
* This file contains these system calls.
*/
#include <linux/kernel.h>
@ -47,7 +57,17 @@
#include <asm/syscalls.h>
#include <asm/switch_to.h>
COMPAT_SYSCALL_DEFINE6(ppc_pread64,
#ifdef CONFIG_PPC32
#define PPC32_SYSCALL_DEFINE4 SYSCALL_DEFINE4
#define PPC32_SYSCALL_DEFINE5 SYSCALL_DEFINE5
#define PPC32_SYSCALL_DEFINE6 SYSCALL_DEFINE6
#else
#define PPC32_SYSCALL_DEFINE4 COMPAT_SYSCALL_DEFINE4
#define PPC32_SYSCALL_DEFINE5 COMPAT_SYSCALL_DEFINE5
#define PPC32_SYSCALL_DEFINE6 COMPAT_SYSCALL_DEFINE6
#endif
PPC32_SYSCALL_DEFINE6(ppc_pread64,
unsigned int, fd,
char __user *, ubuf, compat_size_t, count,
u32, reg6, u32, pos1, u32, pos2)
@ -55,7 +75,7 @@ COMPAT_SYSCALL_DEFINE6(ppc_pread64,
return ksys_pread64(fd, ubuf, count, merge_64(pos1, pos2));
}
COMPAT_SYSCALL_DEFINE6(ppc_pwrite64,
PPC32_SYSCALL_DEFINE6(ppc_pwrite64,
unsigned int, fd,
const char __user *, ubuf, compat_size_t, count,
u32, reg6, u32, pos1, u32, pos2)
@ -63,28 +83,28 @@ COMPAT_SYSCALL_DEFINE6(ppc_pwrite64,
return ksys_pwrite64(fd, ubuf, count, merge_64(pos1, pos2));
}
COMPAT_SYSCALL_DEFINE5(ppc_readahead,
PPC32_SYSCALL_DEFINE5(ppc_readahead,
int, fd, u32, r4,
u32, offset1, u32, offset2, u32, count)
{
return ksys_readahead(fd, merge_64(offset1, offset2), count);
}
COMPAT_SYSCALL_DEFINE4(ppc_truncate64,
PPC32_SYSCALL_DEFINE4(ppc_truncate64,
const char __user *, path, u32, reg4,
unsigned long, len1, unsigned long, len2)
{
return ksys_truncate(path, merge_64(len1, len2));
}
COMPAT_SYSCALL_DEFINE4(ppc_ftruncate64,
PPC32_SYSCALL_DEFINE4(ppc_ftruncate64,
unsigned int, fd, u32, reg4,
unsigned long, len1, unsigned long, len2)
{
return ksys_ftruncate(fd, merge_64(len1, len2));
}
COMPAT_SYSCALL_DEFINE6(ppc32_fadvise64,
PPC32_SYSCALL_DEFINE6(ppc32_fadvise64,
int, fd, u32, unused, u32, offset1, u32, offset2,
size_t, len, int, advice)
{

16
arch/powerpc/kernel/syscalls/syscall.tbl
View File

@ -228,8 +228,10 @@
176 64 rt_sigtimedwait sys_rt_sigtimedwait
177 nospu rt_sigqueueinfo sys_rt_sigqueueinfo compat_sys_rt_sigqueueinfo
178 nospu rt_sigsuspend sys_rt_sigsuspend compat_sys_rt_sigsuspend
179 common pread64 sys_pread64 compat_sys_ppc_pread64
180 common pwrite64 sys_pwrite64 compat_sys_ppc_pwrite64
179 32 pread64 sys_ppc_pread64 compat_sys_ppc_pread64
179 64 pread64 sys_pread64
180 32 pwrite64 sys_ppc_pwrite64 compat_sys_ppc_pwrite64
180 64 pwrite64 sys_pwrite64
181 common chown sys_chown
182 common getcwd sys_getcwd
183 common capget sys_capget
@ -242,10 +244,11 @@
188 common putpmsg sys_ni_syscall
189 nospu vfork sys_vfork
190 common ugetrlimit sys_getrlimit compat_sys_getrlimit
191 common readahead sys_readahead compat_sys_ppc_readahead
191 32 readahead sys_ppc_readahead compat_sys_ppc_readahead
191 64 readahead sys_readahead
192 32 mmap2 sys_mmap2 compat_sys_mmap2
193 32 truncate64 sys_truncate64 compat_sys_ppc_truncate64
194 32 ftruncate64 sys_ftruncate64 compat_sys_ppc_ftruncate64
193 32 truncate64 sys_ppc_truncate64 compat_sys_ppc_truncate64
194 32 ftruncate64 sys_ppc_ftruncate64 compat_sys_ppc_ftruncate64
195 32 stat64 sys_stat64
196 32 lstat64 sys_lstat64
197 32 fstat64 sys_fstat64
@ -288,7 +291,8 @@
230 common io_submit sys_io_submit compat_sys_io_submit
231 common io_cancel sys_io_cancel
232 nospu set_tid_address sys_set_tid_address
233 common fadvise64 sys_fadvise64 compat_sys_ppc32_fadvise64
233 32 fadvise64 sys_ppc32_fadvise64 compat_sys_ppc32_fadvise64
233 64 fadvise64 sys_fadvise64
234 nospu exit_group sys_exit_group
235 nospu lookup_dcookie sys_lookup_dcookie compat_sys_lookup_dcookie
236 common epoll_create sys_epoll_create

21
arch/powerpc/kvm/book3s_hv_uvmem.c
View File

@ -508,10 +508,10 @@ unsigned long kvmppc_h_svm_init_start(struct kvm *kvm)
static int __kvmppc_svm_page_out(struct vm_area_struct *vma,
unsigned long start,
unsigned long end, unsigned long page_shift,
struct kvm *kvm, unsigned long gpa)
struct kvm *kvm, unsigned long gpa, struct page *fault_page)
{
unsigned long src_pfn, dst_pfn = 0;
struct migrate_vma mig;
struct migrate_vma mig = { 0 };
struct page *dpage, *spage;
struct kvmppc_uvmem_page_pvt *pvt;
unsigned long pfn;
@ -525,6 +525,7 @@ static int __kvmppc_svm_page_out(struct vm_area_struct *vma,
mig.dst = &dst_pfn;
mig.pgmap_owner = &kvmppc_uvmem_pgmap;
mig.flags = MIGRATE_VMA_SELECT_DEVICE_PRIVATE;
mig.fault_page = fault_page;
/* The requested page is already paged-out, nothing to do */
if (!kvmppc_gfn_is_uvmem_pfn(gpa >> page_shift, kvm, NULL))
@ -580,12 +581,14 @@ out_finalize:
static inline int kvmppc_svm_page_out(struct vm_area_struct *vma,
unsigned long start, unsigned long end,
unsigned long page_shift,
struct kvm *kvm, unsigned long gpa)
struct kvm *kvm, unsigned long gpa,
struct page *fault_page)
{
int ret;
mutex_lock(&kvm->arch.uvmem_lock);
ret = __kvmppc_svm_page_out(vma, start, end, page_shift, kvm, gpa);
ret = __kvmppc_svm_page_out(vma, start, end, page_shift, kvm, gpa,
fault_page);
mutex_unlock(&kvm->arch.uvmem_lock);
return ret;
@ -634,7 +637,7 @@ void kvmppc_uvmem_drop_pages(const struct kvm_memory_slot *slot,
pvt->remove_gfn = true;
if (__kvmppc_svm_page_out(vma, addr, addr + PAGE_SIZE,
PAGE_SHIFT, kvm, pvt->gpa))
PAGE_SHIFT, kvm, pvt->gpa, NULL))
pr_err("Can't page out gpa:0x%lx addr:0x%lx\n",
pvt->gpa, addr);
} else {
@ -715,7 +718,7 @@ static struct page *kvmppc_uvmem_get_page(unsigned long gpa, struct kvm *kvm)
dpage = pfn_to_page(uvmem_pfn);
dpage->zone_device_data = pvt;
lock_page(dpage);
zone_device_page_init(dpage);
return dpage;
out_clear:
spin_lock(&kvmppc_uvmem_bitmap_lock);
@ -736,7 +739,7 @@ static int kvmppc_svm_page_in(struct vm_area_struct *vma,
bool pagein)
{
unsigned long src_pfn, dst_pfn = 0;
struct migrate_vma mig;
struct migrate_vma mig = { 0 };
struct page *spage;
unsigned long pfn;
struct page *dpage;
@ -994,7 +997,7 @@ static vm_fault_t kvmppc_uvmem_migrate_to_ram(struct vm_fault *vmf)
if (kvmppc_svm_page_out(vmf->vma, vmf->address,
vmf->address + PAGE_SIZE, PAGE_SHIFT,
pvt->kvm, pvt->gpa))
pvt->kvm, pvt->gpa, vmf->page))
return VM_FAULT_SIGBUS;
else
return 0;
@ -1065,7 +1068,7 @@ kvmppc_h_svm_page_out(struct kvm *kvm, unsigned long gpa,
if (!vma || vma->vm_start > start || vma->vm_end < end)
goto out;
if (!kvmppc_svm_page_out(vma, start, end, page_shift, kvm, gpa))
if (!kvmppc_svm_page_out(vma, start, end, page_shift, kvm, gpa, NULL))
ret = H_SUCCESS;
out:
mmap_read_unlock(kvm->mm);

3
arch/powerpc/platforms/pseries/Makefile
View File

@ -7,7 +7,7 @@ obj-y := lpar.o hvCall.o nvram.o reconfig.o \
setup.o iommu.o event_sources.o ras.o \
firmware.o power.o dlpar.o mobility.o rng.o \
pci.o pci_dlpar.o eeh_pseries.o msi.o \
papr_platform_attributes.o
papr_platform_attributes.o dtl.o
obj-$(CONFIG_SMP) += smp.o
obj-$(CONFIG_KEXEC_CORE) += kexec.o
obj-$(CONFIG_PSERIES_ENERGY) += pseries_energy.o
@ -19,7 +19,6 @@ obj-$(CONFIG_HVC_CONSOLE) += hvconsole.o
obj-$(CONFIG_HVCS) += hvcserver.o
obj-$(CONFIG_HCALL_STATS) += hvCall_inst.o
obj-$(CONFIG_CMM) += cmm.o
obj-$(CONFIG_DTL) += dtl.o
obj-$(CONFIG_IO_EVENT_IRQ) += io_event_irq.o
obj-$(CONFIG_LPARCFG) += lparcfg.o
obj-$(CONFIG_IBMVIO) += vio.o

151
arch/powerpc/platforms/pseries/dtl.c
View File

@ -18,6 +18,7 @@
#include <asm/plpar_wrappers.h>
#include <asm/machdep.h>
#ifdef CONFIG_DTL
struct dtl {
struct dtl_entry *buf;
int cpu;
@ -57,78 +58,6 @@ static DEFINE_PER_CPU(struct dtl_ring, dtl_rings);
static atomic_t dtl_count;
/*
* Scan the dispatch trace log and count up the stolen time.
* Should be called with interrupts disabled.
*/
static notrace u64 scan_dispatch_log(u64 stop_tb)
{
u64 i = local_paca->dtl_ridx;
struct dtl_entry *dtl = local_paca->dtl_curr;
struct dtl_entry *dtl_end = local_paca->dispatch_log_end;
struct lppaca *vpa = local_paca->lppaca_ptr;
u64 tb_delta;
u64 stolen = 0;
u64 dtb;
if (!dtl)
return 0;
if (i == be64_to_cpu(vpa->dtl_idx))
return 0;
while (i < be64_to_cpu(vpa->dtl_idx)) {
dtb = be64_to_cpu(dtl->timebase);
tb_delta = be32_to_cpu(dtl->enqueue_to_dispatch_time) +
be32_to_cpu(dtl->ready_to_enqueue_time);
barrier();
if (i + N_DISPATCH_LOG < be64_to_cpu(vpa->dtl_idx)) {
/* buffer has overflowed */
i = be64_to_cpu(vpa->dtl_idx) - N_DISPATCH_LOG;
dtl = local_paca->dispatch_log + (i % N_DISPATCH_LOG);
continue;
}
if (dtb > stop_tb)
break;
if (dtl_consumer)
dtl_consumer(dtl, i);
stolen += tb_delta;
++i;
++dtl;
if (dtl == dtl_end)
dtl = local_paca->dispatch_log;
}
local_paca->dtl_ridx = i;
local_paca->dtl_curr = dtl;
return stolen;
}
/*
* Accumulate stolen time by scanning the dispatch trace log.
* Called on entry from user mode.
*/
void notrace pseries_accumulate_stolen_time(void)
{
u64 sst, ust;
struct cpu_accounting_data *acct = &local_paca->accounting;
sst = scan_dispatch_log(acct->starttime_user);
ust = scan_dispatch_log(acct->starttime);
acct->stime -= sst;
acct->utime -= ust;
acct->steal_time += ust + sst;
}
u64 pseries_calculate_stolen_time(u64 stop_tb)
{
if (!firmware_has_feature(FW_FEATURE_SPLPAR))
return 0;
if (get_paca()->dtl_ridx != be64_to_cpu(get_lppaca()->dtl_idx))
return scan_dispatch_log(stop_tb);
return 0;
}
/*
* The cpu accounting code controls the DTL ring buffer, and we get
* given entries as they are processed.
@ -436,3 +365,81 @@ static int dtl_init(void)
return 0;
}
machine_arch_initcall(pseries, dtl_init);
#endif /* CONFIG_DTL */
#ifdef CONFIG_VIRT_CPU_ACCOUNTING_NATIVE
/*
* Scan the dispatch trace log and count up the stolen time.
* Should be called with interrupts disabled.
*/
static notrace u64 scan_dispatch_log(u64 stop_tb)
{
u64 i = local_paca->dtl_ridx;
struct dtl_entry *dtl = local_paca->dtl_curr;
struct dtl_entry *dtl_end = local_paca->dispatch_log_end;
struct lppaca *vpa = local_paca->lppaca_ptr;
u64 tb_delta;
u64 stolen = 0;
u64 dtb;
if (!dtl)
return 0;
if (i == be64_to_cpu(vpa->dtl_idx))
return 0;
while (i < be64_to_cpu(vpa->dtl_idx)) {
dtb = be64_to_cpu(dtl->timebase);
tb_delta = be32_to_cpu(dtl->enqueue_to_dispatch_time) +
be32_to_cpu(dtl->ready_to_enqueue_time);
barrier();
if (i + N_DISPATCH_LOG < be64_to_cpu(vpa->dtl_idx)) {
/* buffer has overflowed */
i = be64_to_cpu(vpa->dtl_idx) - N_DISPATCH_LOG;
dtl = local_paca->dispatch_log + (i % N_DISPATCH_LOG);
continue;
}
if (dtb > stop_tb)
break;
#ifdef CONFIG_DTL
if (dtl_consumer)
dtl_consumer(dtl, i);
#endif
stolen += tb_delta;
++i;
++dtl;
if (dtl == dtl_end)
dtl = local_paca->dispatch_log;
}
local_paca->dtl_ridx = i;
local_paca->dtl_curr = dtl;
return stolen;
}
/*
* Accumulate stolen time by scanning the dispatch trace log.
* Called on entry from user mode.
*/
void notrace pseries_accumulate_stolen_time(void)
{
u64 sst, ust;
struct cpu_accounting_data *acct = &local_paca->accounting;
sst = scan_dispatch_log(acct->starttime_user);
ust = scan_dispatch_log(acct->starttime);
acct->stime -= sst;
acct->utime -= ust;
acct->steal_time += ust + sst;
}
u64 pseries_calculate_stolen_time(u64 stop_tb)
{
if (!firmware_has_feature(FW_FEATURE_SPLPAR))
return 0;
if (get_paca()->dtl_ridx != be64_to_cpu(get_lppaca()->dtl_idx))
return scan_dispatch_log(stop_tb);
return 0;
}
#endif

1
arch/riscv/Kconfig
View File

@ -70,6 +70,7 @@ config RISCV
select GENERIC_SMP_IDLE_THREAD
select GENERIC_TIME_VSYSCALL if MMU && 64BIT
select GENERIC_VDSO_TIME_NS if HAVE_GENERIC_VDSO
select HARDIRQS_SW_RESEND
select HAVE_ARCH_AUDITSYSCALL
select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
select HAVE_ARCH_JUMP_LABEL_RELATIVE if !XIP_KERNEL

2
arch/riscv/Makefile
View File

@ -37,6 +37,7 @@ else
endif
ifeq ($(CONFIG_LD_IS_LLD),y)
ifeq ($(shell test $(CONFIG_LLD_VERSION) -lt 150000; echo $$?),0)
KBUILD_CFLAGS += -mno-relax
KBUILD_AFLAGS += -mno-relax
ifndef CONFIG_AS_IS_LLVM
@ -44,6 +45,7 @@ ifndef CONFIG_AS_IS_LLVM
KBUILD_AFLAGS += -Wa,-mno-relax
endif
endif
endif
# ISA string setting
riscv-march-$(CONFIG_ARCH_RV32I) := rv32ima

2
arch/riscv/boot/dts/microchip/Makefile
View File

@ -1,4 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += mpfs-icicle-kit.dtb
dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += mpfs-m100pfsevp.dtb
dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += mpfs-polarberry.dtb
dtb-$(CONFIG_SOC_MICROCHIP_POLARFIRE) += mpfs-sev-kit.dtb
obj-$(CONFIG_BUILTIN_DTB) += $(addsuffix .o, $(dtb-y))

43
arch/riscv/boot/dts/microchip/mpfs-icicle-kit-fabric.dtsi
View File

@ -2,20 +2,21 @@
/* Copyright (c) 2020-2021 Microchip Technology Inc */
/ {
compatible = "microchip,mpfs-icicle-reference-rtlv2203", "microchip,mpfs";
compatible = "microchip,mpfs-icicle-reference-rtlv2210", "microchip,mpfs-icicle-kit",
"microchip,mpfs";
core_pwm0: pwm@41000000 {
core_pwm0: pwm@40000000 {
compatible = "microchip,corepwm-rtl-v4";
reg = <0x0 0x41000000 0x0 0xF0>;
reg = <0x0 0x40000000 0x0 0xF0>;
microchip,sync-update-mask = /bits/ 32 <0>;
#pwm-cells = <2>;
clocks = <&fabric_clk3>;
status = "disabled";
};
i2c2: i2c@44000000 {
i2c2: i2c@40000200 {
compatible = "microchip,corei2c-rtl-v7";
reg = <0x0 0x44000000 0x0 0x1000>;
reg = <0x0 0x40000200 0x0 0x100>;
#address-cells = <1>;
#size-cells = <0>;
clocks = <&fabric_clk3>;
@ -28,7 +29,7 @@
fabric_clk3: fabric-clk3 {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <62500000>;
clock-frequency = <50000000>;
};
fabric_clk1: fabric-clk1 {
@ -36,4 +37,34 @@
#clock-cells = <0>;
clock-frequency = <125000000>;
};
pcie: pcie@3000000000 {
compatible = "microchip,pcie-host-1.0";
#address-cells = <0x3>;
#interrupt-cells = <0x1>;
#size-cells = <0x2>;
device_type = "pci";
reg = <0x30 0x0 0x0 0x8000000>, <0x0 0x43000000 0x0 0x10000>;
reg-names = "cfg", "apb";
bus-range = <0x0 0x7f>;
interrupt-parent = <&plic>;
interrupts = <119>;
interrupt-map = <0 0 0 1 &pcie_intc 0>,
<0 0 0 2 &pcie_intc 1>,
<0 0 0 3 &pcie_intc 2>,
<0 0 0 4 &pcie_intc 3>;
interrupt-map-mask = <0 0 0 7>;
clocks = <&fabric_clk1>, <&fabric_clk3>;
clock-names = "fic1", "fic3";
ranges = <0x3000000 0x0 0x8000000 0x30 0x8000000 0x0 0x80000000>;
dma-ranges = <0x02000000 0x0 0x00000000 0x0 0x00000000 0x1 0x00000000>;
msi-parent = <&pcie>;
msi-controller;
status = "disabled";
pcie_intc: interrupt-controller {
#address-cells = <0>;
#interrupt-cells = <1>;
interrupt-controller;
};
};
};

18
arch/riscv/boot/dts/microchip/mpfs-icicle-kit.dts
View File

@ -11,7 +11,8 @@
/ {
model = "Microchip PolarFire-SoC Icicle Kit";
compatible = "microchip,mpfs-icicle-kit", "microchip,mpfs";
compatible = "microchip,mpfs-icicle-reference-rtlv2210", "microchip,mpfs-icicle-kit",
"microchip,mpfs";
aliases {
ethernet0 = &mac1;
@ -32,15 +33,26 @@
ddrc_cache_lo: memory@80000000 {
device_type = "memory";
reg = <0x0 0x80000000 0x0 0x2e000000>;
reg = <0x0 0x80000000 0x0 0x40000000>;
status = "okay";
};
ddrc_cache_hi: memory@1000000000 {
device_type = "memory";
reg = <0x10 0x0 0x0 0x40000000>;
reg = <0x10 0x40000000 0x0 0x40000000>;
status = "okay";
};
reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;
hss_payload: region@BFC00000 {
reg = <0x0 0xBFC00000 0x0 0x400000>;
no-map;
};
};
};
&core_pwm0 {

45
arch/riscv/boot/dts/microchip/mpfs-m100pfs-fabric.dtsi Normal file
View File

@ -0,0 +1,45 @@
// SPDX-License-Identifier: (GPL-2.0 OR MIT)
/* Copyright (c) 2022 Microchip Technology Inc */
/ {
fabric_clk3: fabric-clk3 {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <62500000>;
};
fabric_clk1: fabric-clk1 {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <125000000>;
};
pcie: pcie@2000000000 {
compatible = "microchip,pcie-host-1.0";
#address-cells = <0x3>;
#interrupt-cells = <0x1>;
#size-cells = <0x2>;
device_type = "pci";
reg = <0x20 0x0 0x0 0x8000000>, <0x0 0x43000000 0x0 0x10000>;
reg-names = "cfg", "apb";
bus-range = <0x0 0x7f>;
interrupt-parent = <&plic>;
interrupts = <119>;
interrupt-map = <0 0 0 1 &pcie_intc 0>,
<0 0 0 2 &pcie_intc 1>,
<0 0 0 3 &pcie_intc 2>,
<0 0 0 4 &pcie_intc 3>;
interrupt-map-mask = <0 0 0 7>;
clocks = <&fabric_clk1>, <&fabric_clk1>, <&fabric_clk3>;
clock-names = "fic0", "fic1", "fic3";
ranges = <0x3000000 0x0 0x8000000 0x20 0x8000000 0x0 0x80000000>;
msi-parent = <&pcie>;
msi-controller;
status = "disabled";
pcie_intc: interrupt-controller {
#address-cells = <0>;
#interrupt-cells = <1>;
interrupt-controller;
};
};
};

179
arch/riscv/boot/dts/microchip/mpfs-m100pfsevp.dts Normal file
View File

@ -0,0 +1,179 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Original all-in-one devicetree:
* Copyright (C) 2021-2022 - Wolfgang Grandegger <wg@aries-embedded.de>
* Rewritten to use includes:
* Copyright (C) 2022 - Conor Dooley <conor.dooley@microchip.com>
*/
/dts-v1/;
#include "mpfs.dtsi"
#include "mpfs-m100pfs-fabric.dtsi"
/* Clock frequency (in Hz) of the rtcclk */
#define MTIMER_FREQ 1000000
/ {
model = "Aries Embedded M100PFEVPS";
compatible = "aries,m100pfsevp", "microchip,mpfs";
aliases {
ethernet0 = &mac0;
ethernet1 = &mac1;
serial0 = &mmuart0;
serial1 = &mmuart1;
serial2 = &mmuart2;
serial3 = &mmuart3;
serial4 = &mmuart4;
gpio0 = &gpio0;
gpio1 = &gpio2;
};
chosen {
stdout-path = "serial1:115200n8";
};
cpus {
timebase-frequency = <MTIMER_FREQ>;
};
ddrc_cache_lo: memory@80000000 {
device_type = "memory";
reg = <0x0 0x80000000 0x0 0x40000000>;
};
ddrc_cache_hi: memory@1040000000 {
device_type = "memory";
reg = <0x10 0x40000000 0x0 0x40000000>;
};
};
&can0 {
status = "okay";
};
&i2c0 {
status = "okay";
};
&i2c1 {
status = "okay";
};
&gpio0 {
interrupts = <13>, <14>, <15>, <16>,
<17>, <18>, <19>, <20>,
<21>, <22>, <23>, <24>,
<25>, <26>;
ngpios = <14>;
status = "okay";
pmic-irq-hog {
gpio-hog;
gpios = <13 0>;
input;
};
/* Set to low for eMMC, high for SD-card */
mmc-sel-hog {
gpio-hog;
gpios = <12 0>;
output-high;
};
};
&gpio2 {
interrupts = <13>, <14>, <15>, <16>,
<17>, <18>, <19>, <20>,
<21>, <22>, <23>, <24>,
<25>, <26>, <27>, <28>,
<29>, <30>, <31>, <32>,
<33>, <34>, <35>, <36>,
<37>, <38>, <39>, <40>,
<41>, <42>, <43>, <44>;
status = "okay";
};
&mac0 {
status = "okay";
phy-mode = "gmii";
phy-handle = <&phy0>;
phy0: ethernet-phy@0 {
reg = <0>;
};
};
&mac1 {
status = "okay";
phy-mode = "gmii";
phy-handle = <&phy1>;
phy1: ethernet-phy@0 {
reg = <0>;
};
};
&mbox {
status = "okay";
};
&mmc {
max-frequency = <50000000>;
bus-width = <4>;
cap-mmc-highspeed;
cap-sd-highspeed;
no-1-8-v;
sd-uhs-sdr12;
sd-uhs-sdr25;
sd-uhs-sdr50;
sd-uhs-sdr104;
disable-wp;
status = "okay";
};
&mmuart1 {
status = "okay";
};
&mmuart2 {
status = "okay";
};
&mmuart3 {
status = "okay";
};
&mmuart4 {
status = "okay";
};
&pcie {
status = "okay";
};
&qspi {
status = "okay";
};
&refclk {
clock-frequency = <125000000>;
};
&rtc {
status = "okay";
};
&spi0 {
status = "okay";
};
&spi1 {
status = "okay";
};
&syscontroller {
status = "okay";
};
&usb {
status = "okay";
dr_mode = "host";
};

29
arch/riscv/boot/dts/microchip/mpfs-polarberry-fabric.dtsi
View File

@ -13,4 +13,33 @@
#clock-cells = <0>;
clock-frequency = <125000000>;
};
pcie: pcie@2000000000 {
compatible = "microchip,pcie-host-1.0";
#address-cells = <0x3>;
#interrupt-cells = <0x1>;
#size-cells = <0x2>;
device_type = "pci";
reg = <0x20 0x0 0x0 0x8000000>, <0x0 0x43000000 0x0 0x10000>;
reg-names = "cfg", "apb";
bus-range = <0x0 0x7f>;
interrupt-parent = <&plic>;
interrupts = <119>;
interrupt-map = <0 0 0 1 &pcie_intc 0>,
<0 0 0 2 &pcie_intc 1>,
<0 0 0 3 &pcie_intc 2>,
<0 0 0 4 &pcie_intc 3>;
interrupt-map-mask = <0 0 0 7>;
clocks = <&fabric_clk1>, <&fabric_clk1>, <&fabric_clk3>;
clock-names = "fic0", "fic1", "fic3";
ranges = <0x3000000 0x0 0x8000000 0x20 0x8000000 0x0 0x80000000>;
msi-parent = <&pcie>;
msi-controller;
status = "disabled";
pcie_intc: interrupt-controller {
#address-cells = <0>;
#interrupt-cells = <1>;
interrupt-controller;
};
};
};

45
arch/riscv/boot/dts/microchip/mpfs-sev-kit-fabric.dtsi Normal file
View File

@ -0,0 +1,45 @@
// SPDX-License-Identifier: (GPL-2.0 OR MIT)
/* Copyright (c) 2022 Microchip Technology Inc */
/ {
fabric_clk3: fabric-clk3 {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <0>;
};
fabric_clk1: fabric-clk1 {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <125000000>;
};
pcie: pcie@2000000000 {
compatible = "microchip,pcie-host-1.0";
#address-cells = <0x3>;
#interrupt-cells = <0x1>;
#size-cells = <0x2>;
device_type = "pci";
reg = <0x20 0x0 0x0 0x8000000>, <0x0 0x43000000 0x0 0x10000>;
reg-names = "cfg", "apb";
bus-range = <0x0 0x7f>;
interrupt-parent = <&plic>;
interrupts = <119>;
interrupt-map = <0 0 0 1 &pcie_intc 0>,
<0 0 0 2 &pcie_intc 1>,
<0 0 0 3 &pcie_intc 2>,
<0 0 0 4 &pcie_intc 3>;
interrupt-map-mask = <0 0 0 7>;
clocks = <&fabric_clk1>, <&fabric_clk1>, <&fabric_clk3>;
clock-names = "fic0", "fic1", "fic3";
ranges = <0x3000000 0x0 0x8000000 0x20 0x8000000 0x0 0x80000000>;
msi-parent = <&pcie>;
msi-controller;
status = "disabled";
pcie_intc: interrupt-controller {
#address-cells = <0>;
#interrupt-cells = <1>;
interrupt-controller;
};
};
};

145
arch/riscv/boot/dts/microchip/mpfs-sev-kit.dts Normal file
View File

@ -0,0 +1,145 @@
// SPDX-License-Identifier: (GPL-2.0 OR MIT)
/* Copyright (c) 2022 Microchip Technology Inc */
/dts-v1/;
#include "mpfs.dtsi"
#include "mpfs-sev-kit-fabric.dtsi"
/* Clock frequency (in Hz) of the rtcclk */
#define MTIMER_FREQ 1000000
/ {
#address-cells = <2>;
#size-cells = <2>;
model = "Microchip PolarFire-SoC SEV Kit";
compatible = "microchip,mpfs-sev-kit", "microchip,mpfs";
aliases {
ethernet0 = &mac1;
serial0 = &mmuart0;
serial1 = &mmuart1;
serial2 = &mmuart2;
serial3 = &mmuart3;
serial4 = &mmuart4;
};
chosen {
stdout-path = "serial1:115200n8";
};
cpus {
timebase-frequency = <MTIMER_FREQ>;
};
reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;
fabricbuf0ddrc: buffer@80000000 {
compatible = "shared-dma-pool";
reg = <0x0 0x80000000 0x0 0x2000000>;
};
fabricbuf1ddrnc: buffer@c4000000 {
compatible = "shared-dma-pool";
reg = <0x0 0xc4000000 0x0 0x4000000>;
};
fabricbuf2ddrncwcb: buffer@d4000000 {
compatible = "shared-dma-pool";
reg = <0x0 0xd4000000 0x0 0x4000000>;
};
};
ddrc_cache: memory@1000000000 {
device_type = "memory";
reg = <0x10 0x0 0x0 0x76000000>;
};
};
&i2c0 {
status = "okay";
};
&gpio2 {
interrupts = <53>, <53>, <53>, <53>,
<53>, <53>, <53>, <53>,
<53>, <53>, <53>, <53>,
<53>, <53>, <53>, <53>,
<53>, <53>, <53>, <53>,
<53>, <53>, <53>, <53>,
<53>, <53>, <53>, <53>,
<53>, <53>, <53>, <53>;
status = "okay";
};
&mac0 {
status = "okay";
phy-mode = "sgmii";
phy-handle = <&phy0>;
phy1: ethernet-phy@9 {
reg = <9>;
};
phy0: ethernet-phy@8 {
reg = <8>;
};
};
&mac1 {
status = "okay";
phy-mode = "sgmii";
phy-handle = <&phy1>;
};
&mbox {
status = "okay";
};
&mmc {
status = "okay";
bus-width = <4>;
disable-wp;
cap-sd-highspeed;
cap-mmc-highspeed;
mmc-ddr-1_8v;
mmc-hs200-1_8v;
sd-uhs-sdr12;
sd-uhs-sdr25;
sd-uhs-sdr50;
sd-uhs-sdr104;
};
&mmuart1 {
status = "okay";
};
&mmuart2 {
status = "okay";
};
&mmuart3 {
status = "okay";
};
&mmuart4 {
status = "okay";
};
&refclk {
clock-frequency = <125000000>;
};
&rtc {
status = "okay";
};
&syscontroller {
status = "okay";
};
&usb {
status = "okay";
dr_mode = "otg";
};

31
arch/riscv/boot/dts/microchip/mpfs.dtsi
View File

@ -330,7 +330,7 @@
};
qspi: spi@21000000 {
compatible = "microchip,mpfs-qspi";
compatible = "microchip,mpfs-qspi", "microchip,coreqspi-rtl-v2";
#address-cells = <1>;
#size-cells = <0>;
reg = <0x0 0x21000000 0x0 0x1000>;
@ -464,35 +464,6 @@
status = "disabled";
};
pcie: pcie@2000000000 {
compatible = "microchip,pcie-host-1.0";
#address-cells = <0x3>;
#interrupt-cells = <0x1>;
#size-cells = <0x2>;
device_type = "pci";
reg = <0x20 0x0 0x0 0x8000000>, <0x0 0x43000000 0x0 0x10000>;
reg-names = "cfg", "apb";
bus-range = <0x0 0x7f>;
interrupt-parent = <&plic>;
interrupts = <119>;
interrupt-map = <0 0 0 1 &pcie_intc 0>,
<0 0 0 2 &pcie_intc 1>,
<0 0 0 3 &pcie_intc 2>,
<0 0 0 4 &pcie_intc 3>;
interrupt-map-mask = <0 0 0 7>;
clocks = <&fabric_clk1>, <&fabric_clk1>, <&fabric_clk3>;
clock-names = "fic0", "fic1", "fic3";
ranges = <0x3000000 0x0 0x8000000 0x20 0x8000000 0x0 0x80000000>;
msi-parent = <&pcie>;
msi-controller;
status = "disabled";
pcie_intc: interrupt-controller {
#address-cells = <0>;
#interrupt-cells = <1>;
interrupt-controller;
};
};
mbox: mailbox@37020000 {
compatible = "microchip,mpfs-mailbox";
reg = <0x0 0x37020000 0x0 0x1000>, <0x0 0x2000318C 0x0 0x40>;

14
arch/riscv/errata/thead/errata.c
View File

@ -17,6 +17,9 @@
static bool errata_probe_pbmt(unsigned int stage,
unsigned long arch_id, unsigned long impid)
{
if (!IS_ENABLED(CONFIG_ERRATA_THEAD_PBMT))
return false;
if (arch_id != 0 || impid != 0)
return false;
@ -30,7 +33,9 @@ static bool errata_probe_pbmt(unsigned int stage,
static bool errata_probe_cmo(unsigned int stage,
unsigned long arch_id, unsigned long impid)
{
#ifdef CONFIG_ERRATA_THEAD_CMO
if (!IS_ENABLED(CONFIG_ERRATA_THEAD_CMO))
return false;
if (arch_id != 0 || impid != 0)
return false;
@ -40,9 +45,6 @@ static bool errata_probe_cmo(unsigned int stage,
riscv_cbom_block_size = L1_CACHE_BYTES;
riscv_noncoherent_supported();
return true;
#else
return false;
#endif
}
static u32 thead_errata_probe(unsigned int stage,
@ -51,10 +53,10 @@ static u32 thead_errata_probe(unsigned int stage,
u32 cpu_req_errata = 0;
if (errata_probe_pbmt(stage, archid, impid))
cpu_req_errata |= (1U << ERRATA_THEAD_PBMT);
cpu_req_errata |= BIT(ERRATA_THEAD_PBMT);
if (errata_probe_cmo(stage, archid, impid))
cpu_req_errata |= (1U << ERRATA_THEAD_CMO);
cpu_req_errata |= BIT(ERRATA_THEAD_CMO);
return cpu_req_errata;
}

2
arch/riscv/include/asm/cacheflush.h
View File

@ -55,6 +55,8 @@ static inline void riscv_init_cbom_blocksize(void) { }
#ifdef CONFIG_RISCV_DMA_NONCOHERENT
void riscv_noncoherent_supported(void);
#else
static inline void riscv_noncoherent_supported(void) {}
#endif
/*

4
arch/riscv/include/asm/elf.h
View File

@ -99,6 +99,10 @@ do { \
get_cache_size(2, CACHE_TYPE_UNIFIED)); \
NEW_AUX_ENT(AT_L2_CACHEGEOMETRY, \
get_cache_geometry(2, CACHE_TYPE_UNIFIED)); \
NEW_AUX_ENT(AT_L3_CACHESIZE, \
get_cache_size(3, CACHE_TYPE_UNIFIED)); \
NEW_AUX_ENT(AT_L3_CACHEGEOMETRY, \
get_cache_geometry(3, CACHE_TYPE_UNIFIED)); \
} while (0)
#define ARCH_HAS_SETUP_ADDITIONAL_PAGES
struct linux_binprm;

16
arch/riscv/include/asm/io.h
View File

@ -101,9 +101,9 @@ __io_reads_ins(reads, u32, l, __io_br(), __io_ar(addr))
__io_reads_ins(ins, u8, b, __io_pbr(), __io_par(addr))
__io_reads_ins(ins, u16, w, __io_pbr(), __io_par(addr))
__io_reads_ins(ins, u32, l, __io_pbr(), __io_par(addr))
#define insb(addr, buffer, count) __insb((void __iomem *)(long)addr, buffer, count)
#define insw(addr, buffer, count) __insw((void __iomem *)(long)addr, buffer, count)
#define insl(addr, buffer, count) __insl((void __iomem *)(long)addr, buffer, count)
#define insb(addr, buffer, count) __insb(PCI_IOBASE + (addr), buffer, count)
#define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count)
#define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count)
__io_writes_outs(writes, u8, b, __io_bw(), __io_aw())
__io_writes_outs(writes, u16, w, __io_bw(), __io_aw())
@ -115,22 +115,22 @@ __io_writes_outs(writes, u32, l, __io_bw(), __io_aw())
__io_writes_outs(outs, u8, b, __io_pbw(), __io_paw())
__io_writes_outs(outs, u16, w, __io_pbw(), __io_paw())
__io_writes_outs(outs, u32, l, __io_pbw(), __io_paw())
#define outsb(addr, buffer, count) __outsb((void __iomem *)(long)addr, buffer, count)
#define outsw(addr, buffer, count) __outsw((void __iomem *)(long)addr, buffer, count)
#define outsl(addr, buffer, count) __outsl((void __iomem *)(long)addr, buffer, count)
#define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count)
#define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count)
#define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count)
#ifdef CONFIG_64BIT
__io_reads_ins(reads, u64, q, __io_br(), __io_ar(addr))
#define readsq(addr, buffer, count) __readsq(addr, buffer, count)
__io_reads_ins(ins, u64, q, __io_pbr(), __io_par(addr))
#define insq(addr, buffer, count) __insq((void __iomem *)addr, buffer, count)
#define insq(addr, buffer, count) __insq(PCI_IOBASE + (addr), buffer, count)
__io_writes_outs(writes, u64, q, __io_bw(), __io_aw())
#define writesq(addr, buffer, count) __writesq(addr, buffer, count)
__io_writes_outs(outs, u64, q, __io_pbr(), __io_paw())
#define outsq(addr, buffer, count) __outsq((void __iomem *)addr, buffer, count)
#define outsq(addr, buffer, count) __outsq(PCI_IOBASE + (addr), buffer, count)
#endif
#include <asm-generic/io.h>

1
arch/riscv/include/asm/mmu.h
View File

@ -16,7 +16,6 @@ typedef struct {
atomic_long_t id;
#endif
void *vdso;
void *vdso_info;
#ifdef CONFIG_SMP
/* A local icache flush is needed before user execution can resume. */
cpumask_t icache_stale_mask;

4
arch/riscv/include/uapi/asm/auxvec.h
View File

@ -30,8 +30,10 @@
#define AT_L1D_CACHEGEOMETRY 43
#define AT_L2_CACHESIZE 44
#define AT_L2_CACHEGEOMETRY 45
#define AT_L3_CACHESIZE 46
#define AT_L3_CACHEGEOMETRY 47
/* entries in ARCH_DLINFO */
#define AT_VECTOR_SIZE_ARCH 7
#define AT_VECTOR_SIZE_ARCH 9
#endif /* _UAPI_ASM_RISCV_AUXVEC_H */

51
arch/riscv/kernel/cpu.c
View File

@ -3,10 +3,13 @@
* Copyright (C) 2012 Regents of the University of California
*/
#include <linux/cpu.h>
#include <linux/init.h>
#include <linux/seq_file.h>
#include <linux/of.h>
#include <asm/csr.h>
#include <asm/hwcap.h>
#include <asm/sbi.h>
#include <asm/smp.h>
#include <asm/pgtable.h>
@ -68,6 +71,50 @@ int riscv_of_parent_hartid(struct device_node *node, unsigned long *hartid)
}
#ifdef CONFIG_PROC_FS
struct riscv_cpuinfo {
unsigned long mvendorid;
unsigned long marchid;
unsigned long mimpid;
};
static DEFINE_PER_CPU(struct riscv_cpuinfo, riscv_cpuinfo);
static int riscv_cpuinfo_starting(unsigned int cpu)
{
struct riscv_cpuinfo *ci = this_cpu_ptr(&riscv_cpuinfo);
#if IS_ENABLED(CONFIG_RISCV_SBI)
ci->mvendorid = sbi_spec_is_0_1() ? 0 : sbi_get_mvendorid();
ci->marchid = sbi_spec_is_0_1() ? 0 : sbi_get_marchid();
ci->mimpid = sbi_spec_is_0_1() ? 0 : sbi_get_mimpid();
#elif IS_ENABLED(CONFIG_RISCV_M_MODE)
ci->mvendorid = csr_read(CSR_MVENDORID);
ci->marchid = csr_read(CSR_MARCHID);
ci->mimpid = csr_read(CSR_MIMPID);
#else
ci->mvendorid = 0;
ci->marchid = 0;
ci->mimpid = 0;
#endif
return 0;
}
static int __init riscv_cpuinfo_init(void)
{
int ret;
ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "riscv/cpuinfo:starting",
riscv_cpuinfo_starting, NULL);
if (ret < 0) {
pr_err("cpuinfo: failed to register hotplug callbacks.\n");
return ret;
}
return 0;
}
device_initcall(riscv_cpuinfo_init);
#define __RISCV_ISA_EXT_DATA(UPROP, EXTID) \
{ \
.uprop = #UPROP, \
@ -186,6 +233,7 @@ static int c_show(struct seq_file *m, void *v)
{
unsigned long cpu_id = (unsigned long)v - 1;
struct device_node *node = of_get_cpu_node(cpu_id, NULL);
struct riscv_cpuinfo *ci = per_cpu_ptr(&riscv_cpuinfo, cpu_id);
const char *compat, *isa;
seq_printf(m, "processor\t: %lu\n", cpu_id);
@ -196,6 +244,9 @@ static int c_show(struct seq_file *m, void *v)
if (!of_property_read_string(node, "compatible", &compat)
&& strcmp(compat, "riscv"))
seq_printf(m, "uarch\t\t: %s\n", compat);
seq_printf(m, "mvendorid\t: 0x%lx\n", ci->mvendorid);
seq_printf(m, "marchid\t\t: 0x%lx\n", ci->marchid);
seq_printf(m, "mimpid\t\t: 0x%lx\n", ci->mimpid);
seq_puts(m, "\n");
of_node_put(node);

35
arch/riscv/kernel/cpufeature.c
View File

@ -254,35 +254,28 @@ void __init riscv_fill_hwcap(void)
#ifdef CONFIG_RISCV_ALTERNATIVE
static bool __init_or_module cpufeature_probe_svpbmt(unsigned int stage)
{
#ifdef CONFIG_RISCV_ISA_SVPBMT
switch (stage) {
case RISCV_ALTERNATIVES_EARLY_BOOT:
if (!IS_ENABLED(CONFIG_RISCV_ISA_SVPBMT))
return false;
default:
return riscv_isa_extension_available(NULL, SVPBMT);
}
#endif
if (stage == RISCV_ALTERNATIVES_EARLY_BOOT)
return false;
return riscv_isa_extension_available(NULL, SVPBMT);
}
static bool __init_or_module cpufeature_probe_zicbom(unsigned int stage)
{
#ifdef CONFIG_RISCV_ISA_ZICBOM
switch (stage) {
case RISCV_ALTERNATIVES_EARLY_BOOT:
if (!IS_ENABLED(CONFIG_RISCV_ISA_ZICBOM))
return false;
default:
if (riscv_isa_extension_available(NULL, ZICBOM)) {
if (stage == RISCV_ALTERNATIVES_EARLY_BOOT)
return false;
if (!riscv_isa_extension_available(NULL, ZICBOM))
return false;
riscv_noncoherent_supported();
return true;
} else {
return false;
}
}
#endif
return false;
}
/*
@ -297,10 +290,10 @@ static u32 __init_or_module cpufeature_probe(unsigned int stage)
u32 cpu_req_feature = 0;
if (cpufeature_probe_svpbmt(stage))
cpu_req_feature |= (1U << CPUFEATURE_SVPBMT);
cpu_req_feature |= BIT(CPUFEATURE_SVPBMT);
if (cpufeature_probe_zicbom(stage))
cpu_req_feature |= (1U << CPUFEATURE_ZICBOM);
cpu_req_feature |= BIT(CPUFEATURE_ZICBOM);
return cpu_req_feature;
}

4
arch/riscv/kernel/setup.c
View File

@ -252,10 +252,10 @@ static void __init parse_dtb(void)
pr_info("Machine model: %s\n", name);
dump_stack_set_arch_desc("%s (DT)", name);
}
return;
} else {
pr_err("No DTB passed to the kernel\n");
}
pr_err("No DTB passed to the kernel\n");
#ifdef CONFIG_CMDLINE_FORCE
strscpy(boot_command_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
pr_info("Forcing kernel command line to: %s\n", boot_command_line);

3
arch/riscv/kernel/sys_riscv.c
View File

@ -18,9 +18,6 @@ static long riscv_sys_mmap(unsigned long addr, unsigned long len,
if (unlikely(offset & (~PAGE_MASK >> page_shift_offset)))
return -EINVAL;
if (unlikely((prot & PROT_WRITE) && !(prot & PROT_READ)))
return -EINVAL;
return ksys_mmap_pgoff(addr, len, prot, flags, fd,
offset >> (PAGE_SHIFT - page_shift_offset));
}

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