The linux headers in this patch synchronized from linux kernel v6.7.0-rc8, and the loongarch kvm part of this patch series based on the header files. And the linux kernel has added the loongarch kvm support in master branch.
This series add loongarch kvm support, mainly implement some interfaces used by kvm, such as kvm_arch_get/set_regs, kvm_arch_handle_exit, kvm_loongarch_set_interrupt, etc. Currently, we are able to boot LoongArch KVM Linux Guests. In loongarch VM, mmio devices and iocsr devices are emulated in user space such as APIC, IPI, pci devices, etc, other hardwares such as MMU, timer and csr are emulated in kernel. The running environment of LoongArch virt machine: 1. Get the Linux KVM environment of LoongArch in Linux mainline. make ARCH=loongarch CROSS_COMPILE=loongarch64-unknown-linux-gnu- loongson3_defconfig make ARCH=loongarch CROSS_COMPILE=loongarch64-unknown-linux-gnu- 2. Get the qemu source: https://github.com/loongson/qemu git checkout kvm-loongarch ./configure --target-list="loongarch64-softmmu" --enable-kvm make 3. Get uefi bios of LoongArch virt machine: Link: https://github.com/tianocore/edk2-platforms/tree/master/Platform/Loongson/LoongArchQemuPkg#readme 4. Also you can access the binary files we have already built: https://github.com/yangxiaojuan-loongson/qemu-binary The command to boot loongarch virt machine: $ qemu-system-loongarch64 -machine virt -m 4G -cpu la464 \ -smp 1 -bios QEMU_EFI.fd -kernel vmlinuz.efi -initrd ramdisk \ -serial stdio -monitor telnet:localhost:4495,server,nowait \ -append "root=/dev/ram rdinit=/sbin/init console=ttyS0,115200" \ --nographic Changes for v4: 1. Synchronize linux headers from linux v6.7.0-rc8. 2. Move kvm.c and kvm_loongarch.h into target/loongarch/kvm/ directory. 3. Add "#ifndef CONFIG_USER_ONLY" before loongarch_cpu_do_interrupt to fix compiling issue. 4. Remove "#ifdef CONFIG_TCG" before "#include "exec/cpu_ldst.h"" in fpu_helper.c, As it has been changed in other patches. Changes for v3: 1. Synchronize linux headers from linux v6.7.0-rc7. 2. Fix compiling error when config enable-kvm and disable-tcg at one time. Changes for v2: 1. Synchronize linux headers from linux v6.7.0-rc6. 2. Remove the stub function: kvm_loongarch_set_interrupt, as kvm_enabled 3. Move the kvm function such as kvm_arch_reset_vcpu from cpu.h to loongarch_kvm.h, and supplement "#include <cpu.h>" in loongarch_kvm.h. Changes for v1: 1. Synchronous KVM headers about LoongArch KVM form linux kernel, as the LoongArch KVM patch series have been accepted by linux kernel. 2. Remove the KVM_GET/SET_ONE_UREG64 macro in target/loongarch, and use the common interface kvm_get/set_one_reg to replace it. 3. Resolve the compiling errors when LoongArch is built by other archs. Tianrui Zhao (9): linux-headers: Synchronize linux headers from linux v6.7.0-rc8 target/loongarch: Define some kvm_arch interfaces target/loongarch: Supplement vcpu env initial when vcpu reset target/loongarch: Implement kvm get/set registers target/loongarch: Implement kvm_arch_init function target/loongarch: Implement kvm_arch_init_vcpu target/loongarch: Implement kvm_arch_handle_exit target/loongarch: Implement set vcpu intr for kvm target/loongarch: Add loongarch kvm into meson build include/standard-headers/drm/drm_fourcc.h | 2 + include/standard-headers/linux/fuse.h | 10 +- include/standard-headers/linux/pci_regs.h | 24 +- include/standard-headers/linux/vhost_types.h | 7 + .../standard-headers/linux/virtio_config.h | 5 + include/standard-headers/linux/virtio_pci.h | 11 + linux-headers/asm-arm64/kvm.h | 32 + linux-headers/asm-generic/unistd.h | 14 +- linux-headers/asm-loongarch/bitsperlong.h | 1 + linux-headers/asm-loongarch/kvm.h | 108 +++ linux-headers/asm-loongarch/mman.h | 1 + linux-headers/asm-loongarch/unistd.h | 5 + linux-headers/asm-mips/unistd_n32.h | 4 + linux-headers/asm-mips/unistd_n64.h | 4 + linux-headers/asm-mips/unistd_o32.h | 4 + linux-headers/asm-powerpc/unistd_32.h | 4 + linux-headers/asm-powerpc/unistd_64.h | 4 + linux-headers/asm-riscv/kvm.h | 12 + linux-headers/asm-s390/unistd_32.h | 4 + linux-headers/asm-s390/unistd_64.h | 4 + linux-headers/asm-x86/unistd_32.h | 4 + linux-headers/asm-x86/unistd_64.h | 3 + linux-headers/asm-x86/unistd_x32.h | 3 + linux-headers/linux/iommufd.h | 180 +++- linux-headers/linux/kvm.h | 11 + linux-headers/linux/psp-sev.h | 1 + linux-headers/linux/stddef.h | 9 +- linux-headers/linux/userfaultfd.h | 9 +- linux-headers/linux/vfio.h | 47 +- linux-headers/linux/vhost.h | 8 + meson.build | 3 + target/loongarch/cpu.c | 39 +- target/loongarch/cpu.h | 5 +- target/loongarch/internals.h | 5 +- target/loongarch/kvm/kvm.c | 768 ++++++++++++++++++ target/loongarch/kvm/kvm_loongarch.h | 16 + target/loongarch/kvm/meson.build | 1 + target/loongarch/meson.build | 1 + target/loongarch/trace-events | 15 + target/loongarch/trace.h | 1 + 40 files changed, 1348 insertions(+), 41 deletions(-) create mode 100644 linux-headers/asm-loongarch/bitsperlong.h create mode 100644 linux-headers/asm-loongarch/kvm.h create mode 100644 linux-headers/asm-loongarch/mman.h create mode 100644 linux-headers/asm-loongarch/unistd.h create mode 100644 target/loongarch/kvm/kvm.c create mode 100644 target/loongarch/kvm/kvm_loongarch.h create mode 100644 target/loongarch/kvm/meson.build create mode 100644 target/loongarch/trace-events create mode 100644 target/loongarch/trace.h -- 2.39.1
