[PATCH v1 12/12] KVM: arm64: Enable KVM_HW_DIRTY_BIT

[Leonardo Bras]

Set the corresponding bit to enable hardware accelerated dirty-bitmap and
dirty-ring cleaning for arm64. Actually using acceleration depends on the
cpus enabling FEAT_HACDBS as well as the pre-requisite features for it,
such as FEAT_HDBSS and FEAT_HAFDBS.

Also, add myself as maintainer for the new bits introduced.

Signed-off-by: Leonardo Bras <leo.bras at arm.com>
---
 MAINTAINERS            | 7 +++++++
 arch/arm64/kvm/Kconfig | 1 +
 2 files changed, 8 insertions(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index d25342ca8aa1..4b8a2b05b916 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2069,20 +2069,27 @@ F:	arch/arm64/boot/dts/Makefile
 ARM ARCHITECTED TIMER DRIVER
 M:	Mark Rutland <mark.rutland at arm.com>
 M:	Marc Zyngier <maz at kernel.org>
 L:	linux-arm-kernel at lists.infradead.org (moderated for non-subscribers)
 S:	Maintained
 F:	arch/arm/include/asm/arch_timer.h
 F:	arch/arm64/include/asm/arch_timer.h
 F:	drivers/clocksource/arm_arch_timer.c
 F:	drivers/clocksource/arm_arch_timer_mmio.c
 
+ARM STAGE-2 DIRTY-BIT TRACKER/CLEANER ACCELERATOR
+M:	Leonardo Bras <leo.bras at arm.com>
+L:	kvmarm at lists.linux.dev
+S:	Maintained
+F:	arch/arm64/include/asm/kvm_dirty_bit.h
+F:	arch/arm64/kvm/dirty_bit.c
+
 ARM ETHOS-U NPU DRIVER
 M:	Rob Herring (Arm) <robh at kernel.org>
 M:	Tomeu Vizoso <tomeu at tomeuvizoso.net>
 L:	dri-devel at lists.freedesktop.org
 S:	Supported
 T:	git https://gitlab.freedesktop.org/drm/misc/kernel.git
 F:	drivers/accel/ethosu/
 F:	include/uapi/drm/ethosu_accel.h
 
 ARM GENERIC INTERRUPT CONTROLLER DRIVERS
diff --git a/arch/arm64/kvm/Kconfig b/arch/arm64/kvm/Kconfig
index 449154f9a485..db8487bf738b 100644
--- a/arch/arm64/kvm/Kconfig
+++ b/arch/arm64/kvm/Kconfig
@@ -27,20 +27,21 @@ menuconfig KVM
 	select VIRT_XFER_TO_GUEST_WORK
 	select KVM_VFIO
 	select HAVE_KVM_DIRTY_RING_ACQ_REL
 	select NEED_KVM_DIRTY_RING_WITH_BITMAP
 	select HAVE_KVM_MSI
 	select HAVE_KVM_IRQCHIP
 	select HAVE_KVM_IRQ_ROUTING
 	select HAVE_KVM_IRQ_BYPASS
 	select HAVE_KVM_READONLY_MEM
 	select HAVE_KVM_VCPU_RUN_PID_CHANGE
+	select HAVE_KVM_HW_DIRTY_BIT if ACPI
 	select SCHED_INFO
 	select GUEST_PERF_EVENTS if PERF_EVENTS
 	select KVM_GUEST_MEMFD
 	help
 	  Support hosting virtualized guest machines.
 
 	  If unsure, say N.
 
 if KVM
 
-- 
2.54.0