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List:       linux-kernel
Subject:    Re: [PATCH v5 17/22] KVM: riscv: selftests: Add helper functions for extension checks
From:       Andrew Jones <ajones () ventanamicro ! com>
Date:       2024-04-05 12:17:49
Message-ID: 20240405-dae6363b92b742554e85cf4c () orel
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On Wed, Apr 03, 2024 at 01:04:46AM -0700, Atish Patra wrote:
> __vcpu_has_ext can check both SBI and ISA extensions when the first
> argument is properly converted to SBI/ISA extension IDs. Introduce
> two helper functions to make life easier for developers so they
> don't have to worry about the conversions.
> 
> Replace the current usages as well with new helpers.
> 
> Signed-off-by: Atish Patra <atishp@rivosinc.com>
> ---
> tools/testing/selftests/kvm/include/riscv/processor.h | 10 ++++++++++
> tools/testing/selftests/kvm/riscv/arch_timer.c        |  2 +-
> 2 files changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/tools/testing/selftests/kvm/include/riscv/processor.h \
> b/tools/testing/selftests/kvm/include/riscv/processor.h index \
>                 3b9cb39327ff..5f389166338c 100644
> --- a/tools/testing/selftests/kvm/include/riscv/processor.h
> +++ b/tools/testing/selftests/kvm/include/riscv/processor.h
> @@ -50,6 +50,16 @@ static inline uint64_t __kvm_reg_id(uint64_t type, uint64_t \
> subtype, 
> bool __vcpu_has_ext(struct kvm_vcpu *vcpu, uint64_t ext);
> 
> +static inline bool __vcpu_has_isa_ext(struct kvm_vcpu *vcpu, uint64_t isa_ext)
> +{
> +	return __vcpu_has_ext(vcpu, RISCV_ISA_EXT_REG(isa_ext));
> +}
> +
> +static inline bool __vcpu_has_sbi_ext(struct kvm_vcpu *vcpu, uint64_t sbi_ext)
> +{
> +	return __vcpu_has_ext(vcpu, RISCV_SBI_EXT_REG(sbi_ext));
> +}
> +
> struct ex_regs {
> 	unsigned long ra;
> 	unsigned long sp;
> diff --git a/tools/testing/selftests/kvm/riscv/arch_timer.c \
> b/tools/testing/selftests/kvm/riscv/arch_timer.c index e22848f747c0..6a3e97ead824 \
>                 100644
> --- a/tools/testing/selftests/kvm/riscv/arch_timer.c
> +++ b/tools/testing/selftests/kvm/riscv/arch_timer.c
> @@ -85,7 +85,7 @@ struct kvm_vm *test_vm_create(void)
> 	int nr_vcpus = test_args.nr_vcpus;
> 
> 	vm = vm_create_with_vcpus(nr_vcpus, guest_code, vcpus);
> -	__TEST_REQUIRE(__vcpu_has_ext(vcpus[0], \
> RISCV_ISA_EXT_REG(KVM_RISCV_ISA_EXT_SSTC)), \
> +	__TEST_REQUIRE(__vcpu_has_isa_ext(vcpus[0], KVM_RISCV_ISA_EXT_SSTC),  "SSTC not \
> available, skipping test\n"); 
> 	vm_init_vector_tables(vm);
> -- 
> 2.34.1
> 

Reviewed-by: Andrew Jones <ajones@ventanamicro.com>


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