linux-kernel - Re: [PATCH v8 18/24] KVM: riscv: selftests: Add helper functions for extension checks

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <bc284bf8-c74d-4601-ab64-79b5cc12f829@collabora.com>
Date: Tue, 23 Apr 2024 13:57:50 +0500
From: Muhammad Usama Anjum <usama.anjum@...labora.com>
To: Atish Patra <atishp@...osinc.com>, linux-kernel@...r.kernel.org
Cc: Muhammad Usama Anjum <usama.anjum@...labora.com>,
 Andrew Jones <ajones@...tanamicro.com>, Ajay Kaher
 <ajay.kaher@...adcom.com>, Albert Ou <aou@...s.berkeley.edu>,
 Alexandre Ghiti <alexghiti@...osinc.com>, Anup Patel <anup@...infault.org>,
 samuel.holland@...ive.com, Conor Dooley <conor.dooley@...rochip.com>,
 Juergen Gross <jgross@...e.com>, kvm-riscv@...ts.infradead.org,
 kvm@...r.kernel.org, linux-kselftest@...r.kernel.org,
 linux-riscv@...ts.infradead.org, Mark Rutland <mark.rutland@....com>,
 Palmer Dabbelt <palmer@...belt.com>, Paolo Bonzini <pbonzini@...hat.com>,
 Paul Walmsley <paul.walmsley@...ive.com>, Shuah Khan <shuah@...nel.org>,
 virtualization@...ts.linux.dev, Will Deacon <will@...nel.org>, x86@...nel.org
Subject: Re: [PATCH v8 18/24] KVM: riscv: selftests: Add helper functions for
 extension checks

On 4/20/24 8:17 PM, 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.
> 
> Reviewed-by: Andrew Jones <ajones@...tanamicro.com>
> Signed-off-by: Atish Patra <atishp@...osinc.com>
LGTM

Reviewed-by: Muhammad Usama Anjum <usama.anjum@...labora.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 0f9cabd99fd4..735b78569021 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);

-- 
BR,
Muhammad Usama Anjum