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| 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 /drivers/android/Kconfig | |
| 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 'drivers/android/Kconfig')
| -rw-r--r-- | drivers/android/Kconfig | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/drivers/android/Kconfig b/drivers/android/Kconfig new file mode 100644 index 000000000..606a9d07f --- /dev/null +++ b/drivers/android/Kconfig @@ -0,0 +1,65 @@ +# SPDX-License-Identifier: GPL-2.0 +menu "Android" + +config ANDROID_BINDER_IPC + bool "Android Binder IPC Driver" + depends on MMU + depends on NET + default n + help + Binder is used in Android for both communication between processes, + and remote method invocation. + + This means one Android process can call a method/routine in another + Android process, using Binder to identify, invoke and pass arguments + between said processes. + +config ANDROID_BINDER_IPC_RUST + bool "Rust version of Android Binder IPC Driver" + depends on RUST && MMU && NET && !ANDROID_BINDER_IPC + help + This enables the Rust implementation of the Binder driver. + + Binder is used in Android for both communication between processes, + and remote method invocation. + + This means one Android process can call a method/routine in another + Android process, using Binder to identify, invoke and pass arguments + between said processes. + +config ANDROID_BINDERFS + bool "Android Binderfs filesystem" + depends on ANDROID_BINDER_IPC + default n + help + Binderfs is a pseudo-filesystem for the Android Binder IPC driver + which can be mounted per-ipc namespace allowing to run multiple + instances of Android. + Each binderfs mount initially only contains a binder-control device. + It can be used to dynamically allocate new binder IPC devices via + ioctls. + +config ANDROID_BINDER_DEVICES + string "Android Binder devices" + depends on ANDROID_BINDER_IPC || ANDROID_BINDER_IPC_RUST + default "binder,hwbinder,vndbinder" + help + Default value for the binder.devices parameter. + + The binder.devices parameter is a comma-separated list of strings + that specifies the names of the binder device nodes that will be + created. Each binder device has its own context manager, and is + therefore logically separated from the other devices. + +config ANDROID_BINDER_ALLOC_KUNIT_TEST + tristate "KUnit Tests for Android Binder Alloc" if !KUNIT_ALL_TESTS + depends on ANDROID_BINDER_IPC && KUNIT + default KUNIT_ALL_TESTS + help + This feature builds the binder alloc KUnit tests. + + Each test case runs using a pared-down binder_alloc struct and + test-specific freelist, which allows this KUnit module to be loaded + for testing without interfering with a running system. + +endmenu |