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authorTianrui Zhao <zhaotianrui@loongson.cn>2023-10-02 05:01:29 +0300
committerHuacai Chen <chenhuacai@loongson.cn>2023-10-02 05:01:29 +0300
commitc1fc48aad14dbe7654f5986afb906332b528d54b (patch)
treed90486f1d59b14232a370b15d854a8a64e4dbfdd
parent39fdf4be72f2b81238acbd4da48c75c135a6f1e0 (diff)
downloadlinux-c1fc48aad14dbe7654f5986afb906332b528d54b.tar.xz
LoongArch: KVM: Enable kvm config and add the makefile
Enable LoongArch kvm config and add the makefile to support build kvm module. Reviewed-by: Bibo Mao <maobibo@loongson.cn> Tested-by: Huacai Chen <chenhuacai@loongson.cn> Signed-off-by: Tianrui Zhao <zhaotianrui@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
-rw-r--r--arch/loongarch/Kbuild2
-rw-r--r--arch/loongarch/Kconfig6
-rw-r--r--arch/loongarch/configs/loongson3_defconfig2
-rw-r--r--arch/loongarch/kvm/Kconfig40
-rw-r--r--arch/loongarch/kvm/Makefile22
5 files changed, 72 insertions, 0 deletions
diff --git a/arch/loongarch/Kbuild b/arch/loongarch/Kbuild
index b01f5cdb27e0..beb8499dd8ed 100644
--- a/arch/loongarch/Kbuild
+++ b/arch/loongarch/Kbuild
@@ -3,5 +3,7 @@ obj-y += mm/
obj-y += net/
obj-y += vdso/
+obj-$(CONFIG_KVM) += kvm/
+
# for cleaning
subdir- += boot
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig
index e14396a2ddcb..d889a0b97bc1 100644
--- a/arch/loongarch/Kconfig
+++ b/arch/loongarch/Kconfig
@@ -129,6 +129,7 @@ config LOONGARCH
select HAVE_KPROBES
select HAVE_KPROBES_ON_FTRACE
select HAVE_KRETPROBES
+ select HAVE_KVM
select HAVE_MOD_ARCH_SPECIFIC
select HAVE_NMI
select HAVE_PCI
@@ -263,6 +264,9 @@ config AS_HAS_LASX_EXTENSION
config AS_HAS_LBT_EXTENSION
def_bool $(as-instr,movscr2gr \$a0$(comma)\$scr0)
+config AS_HAS_LVZ_EXTENSION
+ def_bool $(as-instr,hvcl 0)
+
menu "Kernel type and options"
source "kernel/Kconfig.hz"
@@ -676,3 +680,5 @@ source "kernel/power/Kconfig"
source "drivers/acpi/Kconfig"
endmenu
+
+source "arch/loongarch/kvm/Kconfig"
diff --git a/arch/loongarch/configs/loongson3_defconfig b/arch/loongarch/configs/loongson3_defconfig
index a3b52aaa83b3..33795e4a5bd6 100644
--- a/arch/loongarch/configs/loongson3_defconfig
+++ b/arch/loongarch/configs/loongson3_defconfig
@@ -66,6 +66,8 @@ CONFIG_EFI_ZBOOT=y
CONFIG_EFI_GENERIC_STUB_INITRD_CMDLINE_LOADER=y
CONFIG_EFI_CAPSULE_LOADER=m
CONFIG_EFI_TEST=m
+CONFIG_VIRTUALIZATION=y
+CONFIG_KVM=m
CONFIG_JUMP_LABEL=y
CONFIG_MODULES=y
CONFIG_MODULE_FORCE_LOAD=y
diff --git a/arch/loongarch/kvm/Kconfig b/arch/loongarch/kvm/Kconfig
new file mode 100644
index 000000000000..fda425babfb2
--- /dev/null
+++ b/arch/loongarch/kvm/Kconfig
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# KVM configuration
+#
+
+source "virt/kvm/Kconfig"
+
+menuconfig VIRTUALIZATION
+ bool "Virtualization"
+ help
+ Say Y here to get to see options for using your Linux host to run
+ other operating systems inside virtual machines (guests).
+ This option alone does not add any kernel code.
+
+ If you say N, all options in this submenu will be skipped and
+ disabled.
+
+if VIRTUALIZATION
+
+config KVM
+ tristate "Kernel-based Virtual Machine (KVM) support"
+ depends on AS_HAS_LVZ_EXTENSION
+ depends on HAVE_KVM
+ select HAVE_KVM_DIRTY_RING_ACQ_REL
+ select HAVE_KVM_EVENTFD
+ select HAVE_KVM_VCPU_ASYNC_IOCTL
+ select KVM_GENERIC_DIRTYLOG_READ_PROTECT
+ select KVM_GENERIC_HARDWARE_ENABLING
+ select KVM_MMIO
+ select KVM_XFER_TO_GUEST_WORK
+ select MMU_NOTIFIER
+ select PREEMPT_NOTIFIERS
+ help
+ Support hosting virtualized guest machines using
+ hardware virtualization extensions. You will need
+ a processor equipped with virtualization extensions.
+
+ If unsure, say N.
+
+endif # VIRTUALIZATION
diff --git a/arch/loongarch/kvm/Makefile b/arch/loongarch/kvm/Makefile
new file mode 100644
index 000000000000..244467d7792a
--- /dev/null
+++ b/arch/loongarch/kvm/Makefile
@@ -0,0 +1,22 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for LoongArch KVM support
+#
+
+ccflags-y += -I $(srctree)/$(src)
+
+include $(srctree)/virt/kvm/Makefile.kvm
+
+obj-$(CONFIG_KVM) += kvm.o
+
+kvm-y += exit.o
+kvm-y += interrupt.o
+kvm-y += main.o
+kvm-y += mmu.o
+kvm-y += switch.o
+kvm-y += timer.o
+kvm-y += tlb.o
+kvm-y += vcpu.o
+kvm-y += vm.o
+
+CFLAGS_exit.o += $(call cc-option,-Wno-override-init,)