diff options
| author | Zeng Chi <zengchi@kylinos.cn> | 2026-09-21 18:24:42 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-09-22 08:36:16 -0700 |
| commit | 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d (patch) | |
| tree | 660d50d4139cb750fbde1ae3432452c20726c99d /Documentation/userspace-api/index.rst | |
| download | linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.tar.gz linux-stable-119e9db233ad0f4cbd4cfb9f9385a7bca378b37d.zip | |
KVM: Don't pre-reserve xarray entries when storing empty/NULL attributesgrafted
Skip the xarray reservation loop when clearing all memory attributes, as
storing NULL only erases the entry and never needs to allocate, so no
reservation (and no cleanup of a failed one) is required in that case.
Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: David Ballesteros <davimaba.v@proton.me>
Signed-off-by: Zeng Chi <zengchi@kylinos.cn>
Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com
[sean: split to separate patch]
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'Documentation/userspace-api/index.rst')
| -rw-r--r-- | Documentation/userspace-api/index.rst | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/Documentation/userspace-api/index.rst b/Documentation/userspace-api/index.rst new file mode 100644 index 000000000..a68b1bea5 --- /dev/null +++ b/Documentation/userspace-api/index.rst @@ -0,0 +1,71 @@ +===================================== +The Linux kernel user-space API guide +===================================== + +.. _man-pages: https://www.kernel.org/doc/man-pages/ + +While much of the kernel's user-space API is documented elsewhere +(particularly in the man-pages_ project), some user-space information can +also be found in the kernel tree itself. This manual is intended to be the +place where this information is gathered. + + +System calls +============ + +.. toctree:: + :maxdepth: 1 + + unshare + futex2 + ebpf/index + ioctl/index + mseal + rseq + +Security-related interfaces +=========================== + +.. toctree:: + :maxdepth: 1 + + no_new_privs + seccomp_filter + landlock + lsm + mfd_noexec + spec_ctrl + tee + check_exec + +Devices and I/O +=============== + +.. toctree:: + :maxdepth: 1 + + accelerators/ocxl + dma-buf-heaps + dma-buf-alloc-exchange + fwctl/index + gpio/index + iommufd + media/index + dcdbas + vduse + isapnp + +Everything else +=============== + +.. toctree:: + :maxdepth: 1 + + ELF + liveupdate + netlink/index + sysfs-platform_profile + vduse + futex2 + perf_ring_buffer + ntsync |