linux-kernel - Re: [PATCH] selftests: kvm: replace ternary operator with min()

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: <20220511160614.6bd82c26@p-imbrenda>
Date:   Wed, 11 May 2022 16:06:14 +0200
From:   Claudio Imbrenda <imbrenda@...ux.ibm.com>
To:     Guo Zhengkui <guozhengkui@...o.com>
Cc:     Marc Zyngier <maz@...nel.org>, James Morse <james.morse@....com>,
        Alexandru Elisei <alexandru.elisei@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Shuah Khan <shuah@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        David Hildenbrand <david@...hat.com>,
        Anup Patel <anup@...infault.org>,
        linux-arm-kernel@...ts.infradead.org (moderated list:KERNEL VIRTUAL
        MACHINE FOR ARM64 (KVM/arm64)),
        kvmarm@...ts.cs.columbia.edu (moderated list:KERNEL VIRTUAL MACHINE FOR
        ARM64 (KVM/arm64)),
        kvm@...r.kernel.org (open list:KERNEL VIRTUAL MACHINE (KVM)),
        linux-kselftest@...r.kernel.org (open list:KERNEL SELFTEST FRAMEWORK),
        linux-kernel@...r.kernel.org (open list),
        linux-riscv@...ts.infradead.org (open list:RISC-V ARCHITECTURE),
        zhengkui_guo@...look.com
Subject: Re: [PATCH] selftests: kvm: replace ternary operator with min()

On Wed, 11 May 2022 20:05:55 +0800
Guo Zhengkui <guozhengkui@...o.com> wrote:

> Fix the following coccicheck warnings:
> 
> tools/testing/selftests/kvm/lib/s390x/ucall.c:25:15-17: WARNING
> opportunity for min()
> tools/testing/selftests/kvm/lib/x86_64/ucall.c:27:15-17: WARNING
> opportunity for min()
> tools/testing/selftests/kvm/lib/riscv/ucall.c:56:15-17: WARNING
> opportunity for min()
> tools/testing/selftests/kvm/lib/aarch64/ucall.c:82:15-17: WARNING
> opportunity for min()
> tools/testing/selftests/kvm/lib/aarch64/ucall.c:55:20-21: WARNING
> opportunity for min()
> 
> min() is defined in tools/include/linux/kernel.h.
> 
> Signed-off-by: Guo Zhengkui <guozhengkui@...o.com>

Acked-by: Claudio Imbrenda <imbrenda@...ux.ibm.com>

> ---
>  tools/testing/selftests/kvm/lib/aarch64/ucall.c | 4 ++--
>  tools/testing/selftests/kvm/lib/riscv/ucall.c   | 2 +-
>  tools/testing/selftests/kvm/lib/s390x/ucall.c   | 2 +-
>  tools/testing/selftests/kvm/lib/x86_64/ucall.c  | 2 +-
>  4 files changed, 5 insertions(+), 5 deletions(-)
> 
> diff --git a/tools/testing/selftests/kvm/lib/aarch64/ucall.c b/tools/testing/selftests/kvm/lib/aarch64/ucall.c
> index e0b0164e9af8..00be3ef195ca 100644
> --- a/tools/testing/selftests/kvm/lib/aarch64/ucall.c
> +++ b/tools/testing/selftests/kvm/lib/aarch64/ucall.c
> @@ -52,7 +52,7 @@ void ucall_init(struct kvm_vm *vm, void *arg)
>  	 * lower and won't match physical addresses.
>  	 */
>  	bits = vm->va_bits - 1;
> -	bits = vm->pa_bits < bits ? vm->pa_bits : bits;
> +	bits = min(vm->pa_bits, bits);
>  	end = 1ul << bits;
>  	start = end * 5 / 8;
>  	step = end / 16;
> @@ -79,7 +79,7 @@ void ucall(uint64_t cmd, int nargs, ...)
>  	va_list va;
>  	int i;
>  
> -	nargs = nargs <= UCALL_MAX_ARGS ? nargs : UCALL_MAX_ARGS;
> +	nargs = min(nargs, UCALL_MAX_ARGS);
>  
>  	va_start(va, nargs);
>  	for (i = 0; i < nargs; ++i)
> diff --git a/tools/testing/selftests/kvm/lib/riscv/ucall.c b/tools/testing/selftests/kvm/lib/riscv/ucall.c
> index 9e42d8248fa6..34f16fe70ce8 100644
> --- a/tools/testing/selftests/kvm/lib/riscv/ucall.c
> +++ b/tools/testing/selftests/kvm/lib/riscv/ucall.c
> @@ -53,7 +53,7 @@ void ucall(uint64_t cmd, int nargs, ...)
>  	va_list va;
>  	int i;
>  
> -	nargs = nargs <= UCALL_MAX_ARGS ? nargs : UCALL_MAX_ARGS;
> +	nargs = min(nargs, UCALL_MAX_ARGS);
>  
>  	va_start(va, nargs);
>  	for (i = 0; i < nargs; ++i)
> diff --git a/tools/testing/selftests/kvm/lib/s390x/ucall.c b/tools/testing/selftests/kvm/lib/s390x/ucall.c
> index 9d3b0f15249a..665267c1135d 100644
> --- a/tools/testing/selftests/kvm/lib/s390x/ucall.c
> +++ b/tools/testing/selftests/kvm/lib/s390x/ucall.c
> @@ -22,7 +22,7 @@ void ucall(uint64_t cmd, int nargs, ...)
>  	va_list va;
>  	int i;
>  
> -	nargs = nargs <= UCALL_MAX_ARGS ? nargs : UCALL_MAX_ARGS;
> +	nargs = min(nargs, UCALL_MAX_ARGS);
>  
>  	va_start(va, nargs);
>  	for (i = 0; i < nargs; ++i)
> diff --git a/tools/testing/selftests/kvm/lib/x86_64/ucall.c b/tools/testing/selftests/kvm/lib/x86_64/ucall.c
> index a3489973e290..2ea31a0ebe30 100644
> --- a/tools/testing/selftests/kvm/lib/x86_64/ucall.c
> +++ b/tools/testing/selftests/kvm/lib/x86_64/ucall.c
> @@ -24,7 +24,7 @@ void ucall(uint64_t cmd, int nargs, ...)
>  	va_list va;
>  	int i;
>  
> -	nargs = nargs <= UCALL_MAX_ARGS ? nargs : UCALL_MAX_ARGS;
> +	nargs = min(nargs, UCALL_MAX_ARGS);
>  
>  	va_start(va, nargs);
>  	for (i = 0; i < nargs; ++i)