From: Marc Zyngier <marc.zyngier@arm.com>
To: Dan Carpenter <dan.carpenter@oracle.com>,
Christoffer Dall <christoffer.dall@linaro.org>
Cc: "Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Will Deacon" <will.deacon@arm.com>,
linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: Re: [patch] arm64: KVM: clean up a condition
Date: Thu, 14 Jul 2016 13:33:25 +0000 [thread overview]
Message-ID: <578794A5.3000701@arm.com> (raw)
In-Reply-To: <20160714101934.GD18175@mwanda>
On 14/07/16 11:19, Dan Carpenter wrote:
> My static checker complains that this condition looks like it should be
> = instead of =. This isn't a fast path, so we don't need to be fancy.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>
> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> index a57d650..b0b225c 100644
> --- a/arch/arm64/kvm/sys_regs.c
> +++ b/arch/arm64/kvm/sys_regs.c
> @@ -1546,7 +1546,7 @@ static void unhandled_cp_access(struct kvm_vcpu *vcpu,
> struct sys_reg_params *params)
> {
> u8 hsr_ec = kvm_vcpu_trap_get_class(vcpu);
> - int cp;
> + int cp = -1;
>
> switch(hsr_ec) {
> case ESR_ELx_EC_CP15_32:
> @@ -1558,7 +1558,7 @@ static void unhandled_cp_access(struct kvm_vcpu *vcpu,
> cp = 14;
> break;
> default:
> - WARN_ON((cp = -1));
> + WARN_ON(1);
> }
>
> kvm_err("Unsupported guest CP%d access at: %08lx\n",
>
Indeed, that looks a bit dodgy. I'll queue it for 4.8.
Thanks,
M.
--
Jazz is not dead. It just smells funny...
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <marc.zyngier@arm.com>
To: Dan Carpenter <dan.carpenter@oracle.com>,
Christoffer Dall <christoffer.dall@linaro.org>
Cc: "Paolo Bonzini" <pbonzini@redhat.com>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Catalin Marinas" <catalin.marinas@arm.com>,
"Will Deacon" <will.deacon@arm.com>,
linux-arm-kernel@lists.infradead.org,
kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
kernel-janitors@vger.kernel.org
Subject: Re: [patch] arm64: KVM: clean up a condition
Date: Thu, 14 Jul 2016 14:33:25 +0100 [thread overview]
Message-ID: <578794A5.3000701@arm.com> (raw)
In-Reply-To: <20160714101934.GD18175@mwanda>
On 14/07/16 11:19, Dan Carpenter wrote:
> My static checker complains that this condition looks like it should be
> == instead of =. This isn't a fast path, so we don't need to be fancy.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>
> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> index a57d650..b0b225c 100644
> --- a/arch/arm64/kvm/sys_regs.c
> +++ b/arch/arm64/kvm/sys_regs.c
> @@ -1546,7 +1546,7 @@ static void unhandled_cp_access(struct kvm_vcpu *vcpu,
> struct sys_reg_params *params)
> {
> u8 hsr_ec = kvm_vcpu_trap_get_class(vcpu);
> - int cp;
> + int cp = -1;
>
> switch(hsr_ec) {
> case ESR_ELx_EC_CP15_32:
> @@ -1558,7 +1558,7 @@ static void unhandled_cp_access(struct kvm_vcpu *vcpu,
> cp = 14;
> break;
> default:
> - WARN_ON((cp = -1));
> + WARN_ON(1);
> }
>
> kvm_err("Unsupported guest CP%d access at: %08lx\n",
>
Indeed, that looks a bit dodgy. I'll queue it for 4.8.
Thanks,
M.
--
Jazz is not dead. It just smells funny...
WARNING: multiple messages have this Message-ID (diff)
From: marc.zyngier@arm.com (Marc Zyngier)
To: linux-arm-kernel@lists.infradead.org
Subject: [patch] arm64: KVM: clean up a condition
Date: Thu, 14 Jul 2016 14:33:25 +0100 [thread overview]
Message-ID: <578794A5.3000701@arm.com> (raw)
In-Reply-To: <20160714101934.GD18175@mwanda>
On 14/07/16 11:19, Dan Carpenter wrote:
> My static checker complains that this condition looks like it should be
> == instead of =. This isn't a fast path, so we don't need to be fancy.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
>
> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> index a57d650..b0b225c 100644
> --- a/arch/arm64/kvm/sys_regs.c
> +++ b/arch/arm64/kvm/sys_regs.c
> @@ -1546,7 +1546,7 @@ static void unhandled_cp_access(struct kvm_vcpu *vcpu,
> struct sys_reg_params *params)
> {
> u8 hsr_ec = kvm_vcpu_trap_get_class(vcpu);
> - int cp;
> + int cp = -1;
>
> switch(hsr_ec) {
> case ESR_ELx_EC_CP15_32:
> @@ -1558,7 +1558,7 @@ static void unhandled_cp_access(struct kvm_vcpu *vcpu,
> cp = 14;
> break;
> default:
> - WARN_ON((cp = -1));
> + WARN_ON(1);
> }
>
> kvm_err("Unsupported guest CP%d access at: %08lx\n",
>
Indeed, that looks a bit dodgy. I'll queue it for 4.8.
Thanks,
M.
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2016-07-14 13:33 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-14 10:19 [patch] arm64: KVM: clean up a condition Dan Carpenter
2016-07-14 10:19 ` Dan Carpenter
2016-07-14 10:19 ` Dan Carpenter
2016-07-14 13:33 ` Marc Zyngier [this message]
2016-07-14 13:33 ` Marc Zyngier
2016-07-14 13:33 ` Marc Zyngier
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=578794A5.3000701@arm.com \
--to=marc.zyngier@arm.com \
--cc=catalin.marinas@arm.com \
--cc=christoffer.dall@linaro.org \
--cc=dan.carpenter@oracle.com \
--cc=kernel-janitors@vger.kernel.org \
--cc=kvm@vger.kernel.org \
--cc=kvmarm@lists.cs.columbia.edu \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=pbonzini@redhat.com \
--cc=rkrcmar@redhat.com \
--cc=will.deacon@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.