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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 /Documentation/ABI/testing/sysfs-class-chromeos | |
| 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-chromeos')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-class-chromeos | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-chromeos b/Documentation/ABI/testing/sysfs-class-chromeos new file mode 100644 index 000000000..7fa5be6cc --- /dev/null +++ b/Documentation/ABI/testing/sysfs-class-chromeos @@ -0,0 +1,53 @@ +What: /sys/class/chromeos/<ec-device-name>/flashinfo +Date: August 2015 +KernelVersion: 4.2 +Description: + Show the EC flash information. + +What: /sys/class/chromeos/<ec-device-name>/kb_wake_angle +Date: March 2018 +KernelVersion: 4.17 +Description: + Control the keyboard wake lid angle. Values are between + 0 and 360. This file will also show the keyboard wake lid + angle by querying the hardware. + +What: /sys/class/chromeos/<ec-device-name>/reboot +Date: August 2015 +KernelVersion: 4.2 +Description: + Tell the EC to reboot in various ways. Options are: + + - "cancel": Cancel a pending reboot. + - "ro": Jump to RO without rebooting. + - "rw": Jump to RW without rebooting. + - "cold": Cold reboot. + - "disable-jump": Disable jump until next reboot. + - "hibernate": Hibernate the EC. + - "at-shutdown": Reboot after an AP shutdown. + +What: /sys/class/chromeos/<ec-device-name>/version +Date: August 2015 +KernelVersion: 4.2 +Description: + Show the information about the EC software and hardware. + +What: /sys/class/chromeos/cros_ec/usbpdmuxinfo +Date: February 2025 +Description: + Show PD mux status for each typec port with following flags: + - "USB": USB connected + - "DP": DP connected + - "POLARITY": CC line Polarity inverted + - "HPD_IRQ": Hot Plug Detect interrupt is asserted + - "HPD_LVL": Hot Plug Detect level is asserted + - "SAFE": DP is in safe mode + - "TBT": TBT enabled + - "USB4": USB4 enabled + +What: /sys/class/chromeos/cros_ec/ap_mode_entry +Date: February 2025 +Description: + Show if the AP mode entry EC feature is supported. + It indicates whether the EC waits for direction from the AP + to enter Type-C altmodes or USB4 mode. |