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/firmware/tegra/Kconfig | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 drivers/firmware/tegra/Kconfig (limited to 'drivers/firmware/tegra/Kconfig') diff --git a/drivers/firmware/tegra/Kconfig b/drivers/firmware/tegra/Kconfig new file mode 100644 index 000000000..3a9162706 --- /dev/null +++ b/drivers/firmware/tegra/Kconfig @@ -0,0 +1,28 @@ +# SPDX-License-Identifier: GPL-2.0-only +menu "Tegra firmware driver" + +config TEGRA_IVC + bool + depends on ARCH_TEGRA + help + IVC (Inter-VM Communication) protocol is part of the IPC + (Inter Processor Communication) framework on Tegra. It maintains the + data and the different communication channels in SysRAM or RAM and + keeps the content is synchronization between host CPU and remote + processors. + +config TEGRA_BPMP + bool "Tegra BPMP driver" + depends on ARCH_TEGRA && TEGRA_HSP_MBOX + depends on !CPU_BIG_ENDIAN + select TEGRA_IVC + help + BPMP (Boot and Power Management Processor) is designed to off-loading + the PM functions which include clock/DVFS/thermal/power from the CPU. + It needs HSP as the HW synchronization and notification module and + IVC module as the message communication protocol. + + This driver manages the IPC interface between host CPU and the + firmware running on BPMP. + +endmenu -- cgit v1.3.1