From 119e9db233ad0f4cbd4cfb9f9385a7bca378b37d Mon Sep 17 00:00:00 2001 From: Zeng Chi Date: Mon, 21 Sep 2026 18:24:42 +0800 Subject: KVM: Don't pre-reserve xarray entries when storing empty/NULL attributes 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 Cc: David Ballesteros Signed-off-by: Zeng Chi Link: https://patch.msgid.link/20260921102442.1232375-1-zeng_chi911@163.com [sean: split to separate patch] Signed-off-by: Sean Christopherson --- drivers/hid/surface-hid/Kconfig | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 drivers/hid/surface-hid/Kconfig (limited to 'drivers/hid/surface-hid/Kconfig') diff --git a/drivers/hid/surface-hid/Kconfig b/drivers/hid/surface-hid/Kconfig new file mode 100644 index 000000000..d0cfd0d29 --- /dev/null +++ b/drivers/hid/surface-hid/Kconfig @@ -0,0 +1,40 @@ +# SPDX-License-Identifier: GPL-2.0+ +menu "Surface System Aggregator Module HID support" + depends on SURFACE_AGGREGATOR + +config SURFACE_HID + tristate "HID transport driver for Surface System Aggregator Module" + depends on SURFACE_AGGREGATOR_REGISTRY + select SURFACE_HID_CORE + help + Driver to support integrated HID devices on newer Microsoft Surface + models. + + This driver provides support for the HID transport protocol provided + by the Surface Aggregator Module (i.e. the embedded controller) on + 7th-generation Microsoft Surface devices, i.e. Surface Book 3 and + Surface Laptop 3. On those models, it is mainly used to connect the + integrated touchpad and keyboard. + + Say M or Y here, if you want support for integrated HID devices, i.e. + integrated touchpad and keyboard, on 7th generation Microsoft Surface + models. + +config SURFACE_KBD + tristate "HID keyboard transport driver for Surface System Aggregator Module" + select SURFACE_HID_CORE + help + Driver to support HID keyboards on Surface Laptop 1 and 2 devices. + + This driver provides support for the HID transport protocol provided + by the Surface Aggregator Module (i.e. the embedded controller) on + Microsoft Surface Laptops 1 and 2. It is used to connect the + integrated keyboard on those devices. + + Say M or Y here, if you want support for the integrated keyboard on + Microsoft Surface Laptops 1 and 2. + +endmenu + +config SURFACE_HID_CORE + tristate -- cgit v1.3.1