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)
----------------------------------------------------------------
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
