diff options
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/LSM/SafeSetID.rst | 2 | ||||
| -rw-r--r-- | Documentation/admin-guide/abi-obsolete.rst | 11 | ||||
| -rw-r--r-- | Documentation/admin-guide/abi-removed.rst | 5 | ||||
| -rw-r--r-- | Documentation/admin-guide/abi-stable.rst | 14 | ||||
| -rw-r--r-- | Documentation/admin-guide/abi-testing.rst | 20 | ||||
| -rw-r--r-- | Documentation/admin-guide/abi.rst | 11 | ||||
| -rw-r--r-- | Documentation/admin-guide/index.rst | 2 | ||||
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 7 | ||||
| -rw-r--r-- | Documentation/admin-guide/pm/cpuidle.rst | 4 | ||||
| -rw-r--r-- | Documentation/admin-guide/sysctl/net.rst | 1 |
10 files changed, 74 insertions, 3 deletions
diff --git a/Documentation/admin-guide/LSM/SafeSetID.rst b/Documentation/admin-guide/LSM/SafeSetID.rst index 17996c9070e2..0ec34863c674 100644 --- a/Documentation/admin-guide/LSM/SafeSetID.rst +++ b/Documentation/admin-guide/LSM/SafeSetID.rst @@ -107,7 +107,7 @@ for a UID/GID will prevent that UID/GID from obtaining auxiliary setid privileges, such as allowing a user to set up user namespace UID/GID mappings. Note on GID policies and setgroups() -================== +==================================== In v5.9 we are adding support for limiting CAP_SETGID privileges as was done previously for CAP_SETUID. However, for compatibility with common sandboxing related code conventions in userspace, we currently allow arbitrary diff --git a/Documentation/admin-guide/abi-obsolete.rst b/Documentation/admin-guide/abi-obsolete.rst new file mode 100644 index 000000000000..d095867899c5 --- /dev/null +++ b/Documentation/admin-guide/abi-obsolete.rst @@ -0,0 +1,11 @@ +ABI obsolete symbols +==================== + +Documents interfaces that are still remaining in the kernel, but are +marked to be removed at some later point in time. + +The description of the interface will document the reason why it is +obsolete and when it can be expected to be removed. + +.. kernel-abi:: $srctree/Documentation/ABI/obsolete + :rst: diff --git a/Documentation/admin-guide/abi-removed.rst b/Documentation/admin-guide/abi-removed.rst new file mode 100644 index 000000000000..f7e9e43023c1 --- /dev/null +++ b/Documentation/admin-guide/abi-removed.rst @@ -0,0 +1,5 @@ +ABI removed symbols +=================== + +.. kernel-abi:: $srctree/Documentation/ABI/removed + :rst: diff --git a/Documentation/admin-guide/abi-stable.rst b/Documentation/admin-guide/abi-stable.rst new file mode 100644 index 000000000000..70490736e0d3 --- /dev/null +++ b/Documentation/admin-guide/abi-stable.rst @@ -0,0 +1,14 @@ +ABI stable symbols +================== + +Documents the interfaces that the developer has defined to be stable. + +Userspace programs are free to use these interfaces with no +restrictions, and backward compatibility for them will be guaranteed +for at least 2 years. + +Most interfaces (like syscalls) are expected to never change and always +be available. + +.. kernel-abi:: $srctree/Documentation/ABI/stable + :rst: diff --git a/Documentation/admin-guide/abi-testing.rst b/Documentation/admin-guide/abi-testing.rst new file mode 100644 index 000000000000..b205b16a72d0 --- /dev/null +++ b/Documentation/admin-guide/abi-testing.rst @@ -0,0 +1,20 @@ +ABI testing symbols +=================== + +Documents interfaces that are felt to be stable, +as the main development of this interface has been completed. + +The interface can be changed to add new features, but the +current interface will not break by doing this, unless grave +errors or security problems are found in them. + +Userspace programs can start to rely on these interfaces, but they must +be aware of changes that can occur before these interfaces move to +be marked stable. + +Programs that use these interfaces are strongly encouraged to add their +name to the description of these interfaces, so that the kernel +developers can easily notify them if any changes occur. + +.. kernel-abi:: $srctree/Documentation/ABI/testing + :rst: diff --git a/Documentation/admin-guide/abi.rst b/Documentation/admin-guide/abi.rst new file mode 100644 index 000000000000..bcab3ef2597c --- /dev/null +++ b/Documentation/admin-guide/abi.rst @@ -0,0 +1,11 @@ +===================== +Linux ABI description +===================== + +.. toctree:: + :maxdepth: 2 + + abi-stable + abi-testing + abi-obsolete + abi-removed diff --git a/Documentation/admin-guide/index.rst b/Documentation/admin-guide/index.rst index ed1cf94ea50c..4e0c4ae44acd 100644 --- a/Documentation/admin-guide/index.rst +++ b/Documentation/admin-guide/index.rst @@ -18,6 +18,8 @@ etc. devices sysctl/index + abi + This section describes CPU vulnerabilities and their mitigations. .. toctree:: diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 526d65d8573a..44fde25bb221 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -2858,6 +2858,8 @@ mds=off [X86] tsx_async_abort=off [X86] kvm.nx_huge_pages=off [X86] + no_entry_flush [PPC] + no_uaccess_flush [PPC] Exceptions: This does not have any effect on @@ -3186,6 +3188,8 @@ noefi Disable EFI runtime services support. + no_entry_flush [PPC] Don't flush the L1-D cache when entering the kernel. + noexec [IA-64] noexec [X86] @@ -3235,6 +3239,9 @@ nospec_store_bypass_disable [HW] Disable all mitigations for the Speculative Store Bypass vulnerability + no_uaccess_flush + [PPC] Don't flush the L1-D cache after accessing user data. + noxsave [BUGS=X86] Disables x86 extended register state save and restore using xsave. The kernel will fallback to enabling legacy floating-point and sse state. diff --git a/Documentation/admin-guide/pm/cpuidle.rst b/Documentation/admin-guide/pm/cpuidle.rst index 37940a0584ec..10fde58d0869 100644 --- a/Documentation/admin-guide/pm/cpuidle.rst +++ b/Documentation/admin-guide/pm/cpuidle.rst @@ -478,7 +478,7 @@ order to ask the hardware to enter that state. Also, for each statistics of the given idle state. That information is exposed by the kernel via ``sysfs``. -For each CPU in the system, there is a :file:`/sys/devices/system/cpu<N>/cpuidle/` +For each CPU in the system, there is a :file:`/sys/devices/system/cpu/cpu<N>/cpuidle/` directory in ``sysfs``, where the number ``<N>`` is assigned to the given CPU at the initialization time. That directory contains a set of subdirectories called :file:`state0`, :file:`state1` and so on, up to the number of idle state @@ -494,7 +494,7 @@ object corresponding to it, as follows: residency. ``below`` - Total number of times this idle state had been asked for, but cerainly + Total number of times this idle state had been asked for, but certainly a deeper idle state would have been a better match for the observed idle duration. diff --git a/Documentation/admin-guide/sysctl/net.rst b/Documentation/admin-guide/sysctl/net.rst index 57fd6ce68fe0..f2ab8a5b6a4b 100644 --- a/Documentation/admin-guide/sysctl/net.rst +++ b/Documentation/admin-guide/sysctl/net.rst @@ -300,6 +300,7 @@ Note: 0: 0 1 2 3 4 5 6 7 RSS hash key: 84:50:f4:00:a8:15:d1:a7:e9:7f:1d:60:35:c7:47:25:42:97:74:ca:56:bb:b6:a1:d8:43:e3:c9:0c:fd:17:55:c2:3a:4d:69:ed:f1:42:89 + netdev_tstamp_prequeue ---------------------- |