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/ABI/testing/sysfs-class-vduse | |
| 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/ABI/testing/sysfs-class-vduse')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-vduse | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-vduse b/Documentation/ABI/testing/sysfs-class-vduse new file mode 100644 index 000000000..2f2bc5c8f --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-vduse @@ -0,0 +1,33 @@ +What: /sys/class/vduse/ +Date: Oct 2021 +KernelVersion: 5.15 +Contact: Yongji Xie <xieyongji@bytedance.com> +Description: + The vduse/ class sub-directory belongs to the VDUSE + framework and provides a sysfs interface for configuring + VDUSE devices. + +What: /sys/class/vduse/control/ +Date: Oct 2021 +KernelVersion: 5.15 +Contact: Yongji Xie <xieyongji@bytedance.com> +Description: + This directory entry is created for the control device + of VDUSE framework. + +What: /sys/class/vduse/<device-name>/ +Date: Oct 2021 +KernelVersion: 5.15 +Contact: Yongji Xie <xieyongji@bytedance.com> +Description: + This directory entry is created when a VDUSE device is + created via the control device. + +What: /sys/class/vduse/<device-name>/msg_timeout +Date: Oct 2021 +KernelVersion: 5.15 +Contact: Yongji Xie <xieyongji@bytedance.com> +Description: + (RW) The timeout (in seconds) for waiting for the control + message's response from userspace. Default value is 30s. + Writing a '0' to the file means to disable the timeout. |