Re: [PATCH v3 0/2] KVM: LoongArch: selftests: Add FPU test case

[Huacai Chen]

Series applied, thanks.


Huacai

On Tue, Jun 16, 2026 at 10:26 AM Bibo Mao <maobibo@xxxxxxxxxxx> wrote:
>
> Here add FPU test case and verify FPU register get and set APIs, the
> FPU width supports 64/128/256 bits. It is important for VM migration.
> ---
> v2 ... v3:
>   1. Remove __vm_has_feature() and use __kvm_has_device_attr() directly
>      when checking LSX/LASX feature in patch 2.
>
> v1 ... v2:
>   1. Replace hardcode value with CSR_EUEN_XXX when enable FPU access.
>   2. Add attribute __aligned(64) with kvm_fpureg variable with better FPU
>      save and restore.
>   3. Add clobber $f0 register with inline assemble language with
>      fld.d/vld/xvld instruction.
>   4. Add fallthrough between UCALL_DONE and UCALL_SYNC switch case
>      sentences.
>   5. Remove sync_global_from_guest() between vcpu_fpu_get() ioctl test
>      case, since the buffer is not modified with such instructions
>      fld.d/vld/xvld.
>   6. Modify FPU register with random value rather than plus 0x10, and
>      random() is replaced with value 0x10.
> ---
> Bibo Mao (2):
>   KVM: LoongArch: selftests: Enable LASX feature by auto detect method
>   KVM: LoongArch: selftests: Add FPU test case
>
>  tools/testing/selftests/kvm/Makefile.kvm      |   1 +
>  .../kvm/include/loongarch/processor.h         |  18 +++
>  .../selftests/kvm/lib/loongarch/processor.c   |  12 +-
>  .../selftests/kvm/loongarch/fpu_test.c        | 138 ++++++++++++++++++
>  4 files changed, 168 insertions(+), 1 deletion(-)
>  create mode 100644 tools/testing/selftests/kvm/loongarch/fpu_test.c
>
>
> base-commit: 8cd9520d35a6c38db6567e97dd93b1f11f185dc6
> --
> 2.39.3
>