mbox series

[GIT,PULL] LoongArch KVM changes for v6.7

Message ID 20231005091825.3207300-1-chenhuacai@loongson.cn (mailing list archive)
State New, archived
Headers show
Series [GIT,PULL] LoongArch KVM changes for v6.7 | expand

Pull-request

git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson.git tags/loongarch-kvm-6.7

Message

Huacai Chen Oct. 5, 2023, 9:18 a.m. UTC 
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

Comments

Huacai Chen Oct. 25, 2023, 2:10 a.m. UTC | #1 
Hi, Paolo,

Excuse me, but this is just a gentle reminder. The 6.7 merge window is
coming soon, have you missed this PR mail? Or should I rebase to
6.6-rc7 to send a new PR (a randconfig build error is fixed in
6.6-rc7)?

Huacai

On Thu, Oct 5, 2023 at 5:18 PM Huacai Chen <chenhuacai@loongson.cn> 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)
>
> ----------------------------------------------------------------
> 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
Paolo Bonzini Oct. 25, 2023, 11:54 p.m. UTC | #2 
On 10/25/23 04:10, Huacai Chen wrote:
> Hi, Paolo, Excuse me, but this is just a gentle reminder. The 6.7 merge 
> window is coming soon, have you missed this PR mail? Or should I rebase 
> to 6.6-rc7 to send a new PR (a randconfig build error is fixed in 6.6-rc7)?

Hi,

I am expecting some changes to Kconfig for 6.7 and wanted to pull this 
second, to solve the conflicts.

There is no need to rebase, but it would be useful to point me to the 
fix in 6.6-rc7.

Paolo
Huacai Chen Oct. 26, 2023, 2:36 a.m. UTC | #3 
On Thu, Oct 26, 2023 at 7:54 AM Paolo Bonzini <pbonzini@redhat.com> wrote:
>
> On 10/25/23 04:10, Huacai Chen wrote:
> > Hi, Paolo, Excuse me, but this is just a gentle reminder. The 6.7 merge
> > window is coming soon, have you missed this PR mail? Or should I rebase
> > to 6.6-rc7 to send a new PR (a randconfig build error is fixed in 6.6-rc7)?
>
> Hi,
>
> I am expecting some changes to Kconfig for 6.7 and wanted to pull this
> second, to solve the conflicts.
>
> There is no need to rebase, but it would be useful to point me to the
> fix in 6.6-rc7.
OK, thanks. And the commit 449c2756c2323c9e32b2a2fa9 ("LoongArch:
Export symbol invalid_pud_table for modules building") fixes the
randconfig build error.

Huacai

>
> Paolo
>
Paolo Bonzini Oct. 31, 2023, 2:09 p.m. UTC | #4 
On Thu, Oct 5, 2023 at 11:28 AM Huacai Chen <chenhuacai@loongson.cn> 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
>