Hi, Tianrui, On Mon, Apr 17, 2023 at 6:00 PM Tianrui Zhao <zhaotianrui@xxxxxxxxxxx> wrote: > > Enable loongarch kvm config and add the makefile to support build kvm > module. > > Reported-by: kernel test robot <lkp@xxxxxxxxx> > Link: https://lore.kernel.org/oe-kbuild-all/202304131526.iXfLaVZc-lkp@xxxxxxxxx/ > Signed-off-by: Tianrui Zhao <zhaotianrui@xxxxxxxxxxx> > --- > arch/loongarch/Kbuild | 1 + > arch/loongarch/Kconfig | 2 ++ > arch/loongarch/configs/loongson3_defconfig | 2 ++ > arch/loongarch/kvm/Kconfig | 38 ++++++++++++++++++++++ > arch/loongarch/kvm/Makefile | 22 +++++++++++++ > 5 files changed, 65 insertions(+) > create mode 100644 arch/loongarch/kvm/Kconfig > create mode 100644 arch/loongarch/kvm/Makefile > > diff --git a/arch/loongarch/Kbuild b/arch/loongarch/Kbuild > index b01f5cdb27e0..40be8a1696f9 100644 > --- a/arch/loongarch/Kbuild > +++ b/arch/loongarch/Kbuild > @@ -2,6 +2,7 @@ obj-y += kernel/ > obj-y += mm/ > obj-y += net/ > obj-y += vdso/ > +obj-y += kvm/ > > # for cleaning > subdir- += boot > diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig > index 7fd51257e0ed..f9beeb2e0cc9 100644 > --- a/arch/loongarch/Kconfig > +++ b/arch/loongarch/Kconfig > @@ -148,6 +148,7 @@ config LOONGARCH > select USE_PERCPU_NUMA_NODE_ID > select USER_STACKTRACE_SUPPORT > select ZONE_DMA32 > + select HAVE_KVM Use alpha-betical order, please. Huacai > > config 32BIT > bool > @@ -588,3 +589,4 @@ source "drivers/acpi/Kconfig" > endmenu > > source "drivers/firmware/Kconfig" > +source "arch/loongarch/kvm/Kconfig" > diff --git a/arch/loongarch/configs/loongson3_defconfig b/arch/loongarch/configs/loongson3_defconfig > index e18213f01cc4..c99520374aef 100644 > --- a/arch/loongarch/configs/loongson3_defconfig > +++ b/arch/loongarch/configs/loongson3_defconfig > @@ -63,6 +63,8 @@ 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_MODULES=y > CONFIG_MODULE_FORCE_LOAD=y > CONFIG_MODULE_UNLOAD=y > diff --git a/arch/loongarch/kvm/Kconfig b/arch/loongarch/kvm/Kconfig > new file mode 100644 > index 000000000000..8a999b4c0232 > --- /dev/null > +++ b/arch/loongarch/kvm/Kconfig > @@ -0,0 +1,38 @@ > +# 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 HAVE_KVM > + select MMU_NOTIFIER > + select ANON_INODES > + select PREEMPT_NOTIFIERS > + select KVM_MMIO > + select KVM_GENERIC_DIRTYLOG_READ_PROTECT > + select HAVE_KVM_VCPU_ASYNC_IOCTL > + select HAVE_KVM_EVENTFD > + select SRCU > + help > + Support hosting virtualized guest machines using hardware > + virtualization extensions. You will need a fairly 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..2335e873a6ef > --- /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 += main.o > +kvm-y += vm.o > +kvm-y += vmid.o > +kvm-y += tlb.o > +kvm-y += mmu.o > +kvm-y += vcpu.o > +kvm-y += exit.o > +kvm-y += interrupt.o > +kvm-y += timer.o > +kvm-y += switch.o > +kvm-y += csr_ops.o > -- > 2.31.1 >
