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authorLinus Torvalds <torvalds@linux-foundation.org>2026-09-11 13:15:13 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-09-11 13:15:13 -0700
commit827751b699b79a6e569983359c02dce67f81b94c (patch)
treebb42ac375bb79d1ad6f73c5c6ef1bec0fae21e7b /Documentation
parent1235ff329981ecde9ccbf49b83bd4d71e827d541 (diff)
parentb94cec5761d22624d109d859467d7d4ce0a1b88b (diff)
Merge tag 'riscv-for-linus-7.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Paul Walmsley: "From a RISC-V point of view, there's one notable fix here, reverting an earlier bogus fix to the pointer masking code. Fortunately the practical impact appears to be small. - Revert a bad fix, likely LLM-generated, in the pointer masking code that confused the RISC-V hardware pointer masking implementation with the Linux kernel tagged address feature - Fix unexpected faults caused by kprobe instruction slot writes when !CONFIG_STRICT_MODULE_RWX - Fix unexpected faults on minimal configurations during runtime code patching on !CONFIG_STRICT_MODULE_RWX systems - Fix a misplaced variable clear causing incorrect reuse of previous values in the RISC-V hardware feature probing code - Fix two bugs in the PMU SBI perf code on rv32: use BIT_ULL rather than BIT on 64-bit masks; and use a bitmap rather than an unsigned long on a quantity that can exceed 32 bits And a few miscellaneous cleanups: - Avoid a potential dereference-before-NULL-pointer-check bug in the PMU SBI perf driver - Use CONFIG_GENERIC_BUG_RELATIVE_POINTERS to simplify the rv32 bug table code (like x86 and PPC) - Report the RISC-V standard ISA extensions Z[v]fhmin when support is claimed for the superset RISC-V standard ISA extensions Z[v]fh; and simplify our FPU test code to only check for the presence of the D extension - Use an existing kernel string helper in place of some open-coded code in kernel/usercfi.c - Fix some yamllint issues in the RISC-V DT bindings for CPUs - Convert one use of __ASSEMBLY__ to __ASSEMBLER__ that snuck into the RISC-V CFI selftest code - Update the translation for the simplified Chinese translation of the RISC-V kernel patch acceptance policy" * tag 'riscv-for-linus-7.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: skip software algning code for HAVE_EFFICIENT_UNALIGNED_ACCESS kselftest/riscv: Replace __ASSEMBLY__ with __ASSEMBLER__ docs/zh_CN: Update arch/riscv/patch-acceptance.rst translation dt-bindings: riscv: cpus: Fix yamllint style issues riscv: hwprobe: simplify has_fpu() to check D extension only perf: RISC-V: check cpu_hw_evt before dereference in overflow IRQ riscv: report Zfhmin/Zvfhmin when Zfh/Zvfh are present perf: RISC-V: store available counter mask as bitmap perf: RISC-V: use BIT_ULL for u64 overflow masks riscv: bug: Make RV32 use GENERIC_BUG_RELATIVE_POINTERS riscv: hwprobe: initialize pair->value in hwprobe_one_pair() riscv: use string helper in setup_global_riscv_enable() Revert "riscv: Reset pmm when PR_TAGGED_ADDR_ENABLE is not set" riscv: patch: skip fixmap mapping when kernel text is already writable riscv: mm: make EXECMEM_KPROBES writable without CONFIG_STRICT_MODULE_RWX
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/arch/riscv/hwprobe.rst8
-rw-r--r--Documentation/devicetree/bindings/riscv/cpus.yaml8
-rw-r--r--Documentation/translations/zh_CN/arch/riscv/patch-acceptance.rst46
3 files changed, 43 insertions, 19 deletions
diff --git a/Documentation/arch/riscv/hwprobe.rst b/Documentation/arch/riscv/hwprobe.rst
index 893e1a1215d2..bb1e0cbab36f 100644
--- a/Documentation/arch/riscv/hwprobe.rst
+++ b/Documentation/arch/riscv/hwprobe.rst
@@ -155,7 +155,8 @@ The following keys are defined:
defined in version 1.0 of the RISC-V Cryptography Extensions Volume II.
* :c:macro:`RISCV_HWPROBE_EXT_ZFH`: The Zfh extension version 1.0 is supported
- as defined in the RISC-V ISA manual.
+ as defined in the RISC-V ISA manual. Zfh is a superset of Zfhmin, so
+ RISCV_HWPROBE_EXT_ZFHMIN is reported whenever RISCV_HWPROBE_EXT_ZFH is.
* :c:macro:`RISCV_HWPROBE_EXT_ZFHMIN`: The Zfhmin extension version 1.0 is
supported as defined in the RISC-V ISA manual.
@@ -164,8 +165,9 @@ The following keys are defined:
is supported as defined in the RISC-V ISA manual.
* :c:macro:`RISCV_HWPROBE_EXT_ZVFH`: The Zvfh extension is supported as
- defined in the RISC-V Vector manual starting from commit e2ccd0548d6c
- ("Remove draft warnings from Zvfh[min]").
+ defined in the RISC-V Vector manual starting from commit e2ccd0548d6c
+ ("Remove draft warnings from Zvfh[min]"). Zvfh is a superset of Zvfhmin,
+ so RISCV_HWPROBE_EXT_ZVFHMIN is reported whenever RISCV_HWPROBE_EXT_ZVFH is.
* :c:macro:`RISCV_HWPROBE_EXT_ZVFHMIN`: The Zvfhmin extension is supported as
defined in the RISC-V Vector manual starting from commit e2ccd0548d6c
diff --git a/Documentation/devicetree/bindings/riscv/cpus.yaml b/Documentation/devicetree/bindings/riscv/cpus.yaml
index 5feeb2203050..0da219ae6769 100644
--- a/Documentation/devicetree/bindings/riscv/cpus.yaml
+++ b/Documentation/devicetree/bindings/riscv/cpus.yaml
@@ -117,8 +117,8 @@ properties:
$ref: /schemas/types.yaml#/definitions/uint32
description:
VLEN/8, the vector register length in bytes. This property is required on
- thead systems where the vector register length is not identical on all harts, or
- the vlenb CSR is not available.
+ thead systems where the vector register length is not identical on all
+ harts, or the vlenb CSR is not available.
# RISC-V has multiple properties for cache op block sizes as the sizes
# differ between individual CBO extensions
@@ -151,8 +151,8 @@ anyOf:
- riscv,isa-base
dependencies:
- riscv,isa-base: [ "riscv,isa-extensions" ]
- riscv,isa-extensions: [ "riscv,isa-base" ]
+ riscv,isa-base: ["riscv,isa-extensions"]
+ riscv,isa-extensions: ["riscv,isa-base"]
required:
- interrupt-controller
diff --git a/Documentation/translations/zh_CN/arch/riscv/patch-acceptance.rst b/Documentation/translations/zh_CN/arch/riscv/patch-acceptance.rst
index c8eb230ca8ee..20b91d0433a9 100644
--- a/Documentation/translations/zh_CN/arch/riscv/patch-acceptance.rst
+++ b/Documentation/translations/zh_CN/arch/riscv/patch-acceptance.rst
@@ -15,19 +15,41 @@ arch/riscv 开发者维护指南
概述
----
-RISC-V指令集体系结构是公开开发的:
+RISC-V 指令集体系结构是公开开发的:
正在进行的草案可供所有人查看和测试实现。新模块或者扩展草案可能会在开发过程中发
-生更改---有时以不兼容的方式对以前的草案进行更改。这种灵活性可能会给RISC-V Linux
-维护者带来挑战。Linux开发过程更喜欢经过良好检查和测试的代码,而不是试验代码。我
-们希望推广同样的规则到即将被内核合并的RISC-V相关代码。
+生更改 --- 有时以不兼容的方式对以前的草案进行更改。这种灵活性可能会给 RISC-V
+Linux 维护者带来挑战。Linux 维护者不赞成频繁的变更,且 Linux 开发过程更喜欢经过
+良好检查和测试的代码,而不是试验代码。我们希望推广同样的规则到即将被内核合并的
+RISC-V 相关代码。
+
+Patchwork
+---------
+
+RISC-V 有一个 patchwork 实例,可以在那里查看补丁的状态:
+
+ https://patchwork.kernel.org/project/linux-riscv/list/
+
+如果你的补丁不在默认视图中出现,那么 RISC-V 维护者很有可能已要求修改,或者希望
+将其应用到另一个代码树上。
+
+自动化流程会在该 patchwork 实例上运行,在每个补丁到达时立刻对其进行构建/测试。
+自动化流程会根据补丁是否被识别为修复,选用 RISC-V `for-next` 或 `fixes` 分支
+当前的 HEAD;若上述均应用失败,则使用 RISC-V `master` 分支。补丁系列被应用到的具
+体提交将标注在 patchwork 上。任何检查未通过的补丁通常不会被应用,并且在大多数情
+况下将需要重新提交。
附加的提交检查单
----------------
-我们仅接受相关标准已经被RISC-V基金会标准为“已批准”或“已冻结”的扩展或模块的补丁。
-(开发者当然可以维护自己的Linux内核树,其中包含所需代码扩展草案的代码。)
-
-此外,RISC-V规范允许爱好者创建自己的自定义扩展。这些自定义拓展不需要通过RISC-V
-基金会的任何审核或批准。为了避免将爱好者一些特别的RISC-V拓展添加进内核代码带来
-的维护复杂性和对性能的潜在影响,我们将只接受RISC-V基金会正式冻结或批准的的扩展
-补丁。(开发者当然可以维护自己的Linux内核树,其中包含他们想要的任何自定义扩展
-的代码。)
+我们仅接受针对新模块或扩展的补丁,前提是这些模块或扩展的规范被列为未来不太可能发
+生不兼容的变更。对于来自 RISC-V 基金会的规范,这意味着“已冻结”或“已批准”,对于
+UEFI 论坛的规范,这意味着已发布的 ECR。(开发者当然可以维护自己的 Linux 内核树,
+其中包含他们所需的任何扩展草案的代码。)
+
+此外,RISC-V 规范允许实现者创建自己的自定义扩展。这些自定义扩展不需要通过 RISC-V
+基金会的任何审核或批准流程。为了避免因添加实现者特定的 RISC-V 扩展带来的维护复杂
+性和对性能的潜在影响,我们将只考虑符合以下任一条件的扩展补丁:
+
+- 已由 RISC-V 基金会正式冻结或批准
+- 已按照标准 Linux 惯例,在广泛可用的硬件中实现
+
+(实现者当然可以维护自己的 Linux 内核树,其中包含他们所需的任何自定义扩展的代码。)