On Thu, Oct 5, 2023 at 11:28 AM Huacai Chen <chenhuacai@xxxxxxxxxxx> wrote: > > The following changes since commit 8a749fd1a8720d4619c91c8b6e7528c0a355c0aa: > > Linux 6.6-rc4 (2023-10-01 14:15:13 -0700) > > are available in the Git repository at: > > git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git tags/loongarch-kvm-6.7 > > for you to fetch changes up to 2c10cda4b777be4be9d9e69e4f70c818dbb15e21: > > LoongArch: KVM: Add maintainers for LoongArch KVM (2023-10-02 10:01:29 +0800) Pulled, thanks. Paolo > > ---------------------------------------------------------------- > LoongArch KVM changes for v6.7 > > Add LoongArch's KVM support. Loongson 3A5000/3A6000 supports hardware > assisted virtualization. With cpu virtualization, there are separate > hw-supported user mode and kernel mode in guest mode. With memory > virtualization, there are two-level hw mmu table for guest mode and host > mode. Also there is separate hw cpu timer with consant frequency in > guest mode, so that vm can migrate between hosts with different freq. > Currently, we are able to boot LoongArch Linux guests. > > Few key aspects of KVM LoongArch added by this series are: > 1. Enable kvm hardware features when kvm module is loaded. > 2. Implement VM and vcpu related ioctl interface such as vcpu create, > vcpu run etc. GET_ONE_REG/SET_ONE_REG ioctl commands are use to > get general registers one by one. > 3. Hardware access about MMU, timer and csr are emulated in kernel. > 4. Hardwares such as mmio and iocsr device are emulated in user space > such as IPI, irqchips, pci devices etc. > > ---------------------------------------------------------------- > Tianrui Zhao (25): > LoongArch: KVM: Add kvm related header files > LoongArch: KVM: Implement kvm module related interface > LoongArch: KVM: Implement kvm hardware enable, disable interface > LoongArch: KVM: Implement VM related functions > LoongArch: KVM: Add vcpu related header files > LoongArch: KVM: Implement basic vcpu interfaces > LoongArch: KVM: Implement basic vcpu ioctl interfaces > LoongArch: KVM: Implement fpu operations for vcpu > LoongArch: KVM: Implement vcpu interrupt operations > LoongArch: KVM: Implement vcpu load and vcpu put operations > LoongArch: KVM: Implement misc vcpu related interfaces > LoongArch: KVM: Implement vcpu timer operations > LoongArch: KVM: Implement virtual machine tlb operations > LoongArch: KVM: Implement kvm mmu operations > LoongArch: KVM: Implement handle csr exception > LoongArch: KVM: Implement handle iocsr exception > LoongArch: KVM: Implement handle idle exception > LoongArch: KVM: Implement handle gspr exception > LoongArch: KVM: Implement handle mmio exception > LoongArch: KVM: Implement handle fpu exception > LoongArch: KVM: Implement kvm exception vectors > LoongArch: KVM: Implement vcpu world switch > LoongArch: KVM: Enable kvm config and add the makefile > LoongArch: KVM: Supplement kvm document about LoongArch-specific part > LoongArch: KVM: Add maintainers for LoongArch KVM > > Documentation/virt/kvm/api.rst | 70 ++- > MAINTAINERS | 12 + > arch/loongarch/Kbuild | 2 + > arch/loongarch/Kconfig | 6 + > arch/loongarch/configs/loongson3_defconfig | 2 + > arch/loongarch/include/asm/inst.h | 16 + > arch/loongarch/include/asm/kvm_csr.h | 211 +++++++ > arch/loongarch/include/asm/kvm_host.h | 237 ++++++++ > arch/loongarch/include/asm/kvm_mmu.h | 139 +++++ > arch/loongarch/include/asm/kvm_types.h | 11 + > arch/loongarch/include/asm/kvm_vcpu.h | 93 +++ > arch/loongarch/include/asm/loongarch.h | 19 +- > arch/loongarch/include/uapi/asm/kvm.h | 108 ++++ > arch/loongarch/kernel/asm-offsets.c | 32 + > arch/loongarch/kvm/Kconfig | 40 ++ > arch/loongarch/kvm/Makefile | 22 + > arch/loongarch/kvm/exit.c | 696 +++++++++++++++++++++ > arch/loongarch/kvm/interrupt.c | 183 ++++++ > arch/loongarch/kvm/main.c | 420 +++++++++++++ > arch/loongarch/kvm/mmu.c | 914 ++++++++++++++++++++++++++++ > arch/loongarch/kvm/switch.S | 250 ++++++++ > arch/loongarch/kvm/timer.c | 197 ++++++ > arch/loongarch/kvm/tlb.c | 32 + > arch/loongarch/kvm/trace.h | 162 +++++ > arch/loongarch/kvm/vcpu.c | 939 +++++++++++++++++++++++++++++ > arch/loongarch/kvm/vm.c | 94 +++ > include/uapi/linux/kvm.h | 9 + > 27 files changed, 4902 insertions(+), 14 deletions(-) > create mode 100644 arch/loongarch/include/asm/kvm_csr.h > create mode 100644 arch/loongarch/include/asm/kvm_host.h > create mode 100644 arch/loongarch/include/asm/kvm_mmu.h > create mode 100644 arch/loongarch/include/asm/kvm_types.h > create mode 100644 arch/loongarch/include/asm/kvm_vcpu.h > create mode 100644 arch/loongarch/include/uapi/asm/kvm.h > create mode 100644 arch/loongarch/kvm/Kconfig > create mode 100644 arch/loongarch/kvm/Makefile > create mode 100644 arch/loongarch/kvm/exit.c > create mode 100644 arch/loongarch/kvm/interrupt.c > create mode 100644 arch/loongarch/kvm/main.c > create mode 100644 arch/loongarch/kvm/mmu.c > create mode 100644 arch/loongarch/kvm/switch.S > create mode 100644 arch/loongarch/kvm/timer.c > create mode 100644 arch/loongarch/kvm/tlb.c > create mode 100644 arch/loongarch/kvm/trace.h > create mode 100644 arch/loongarch/kvm/vcpu.c > create mode 100644 arch/loongarch/kvm/vm.c >
