linux-kernel - Re: [PATCH] KVM: arm: get rid of unused arg in cpu_init_hyp

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Date:   Sat, 30 Nov 2019 07:20:24 +0000
From:   linmiaohe <linmiaohe@...wei.com>
To:     "maz@...nel.org" <maz@...nel.org>,
        "james.morse@....com" <james.morse@....com>,
        "julien.thierry.kdev@...il.com" <julien.thierry.kdev@...il.com>,
        "suzuki.poulose@....com" <suzuki.poulose@....com>,
        "christoffer.dall@....com" <christoffer.dall@....com>,
        "catalin.marinas@....com" <catalin.marinas@....com>,
        "eric.auger@...hat.com" <eric.auger@...hat.com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "will@...nel.org" <will@...nel.org>,
        "andre.przywara@....com" <andre.przywara@....com>,
        "tglx@...utronix.de" <tglx@...utronix.de>
CC:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "kvmarm@...ts.cs.columbia.edu" <kvmarm@...ts.cs.columbia.edu>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>
Subject: Re: [PATCH] KVM: arm: get rid of unused arg in cpu_init_hyp_mode()

>From: Miaohe Lin <linmiaohe@...wei.com>
>
>As arg dummy is not really needed, there's no need to pass NULL when calling cpu_init_hyp_mode(). So clean it up.
>
>Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
>---
> virt/kvm/arm/arm.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
>diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c index 86c6aa1cb58e..a5470f1b1a19 100644
>--- a/virt/kvm/arm/arm.c
>+++ b/virt/kvm/arm/arm.c
>@@ -1315,7 +1315,7 @@ long kvm_arch_vm_ioctl(struct file *filp,
> 	}
> }
>
>-static void cpu_init_hyp_mode(void *dummy)
>+static void cpu_init_hyp_mode(void)
> {
> 	phys_addr_t pgd_ptr;
> 	unsigned long hyp_stack_ptr;
>@@ -1349,7 +1349,7 @@ static void cpu_hyp_reinit(void)
> 	if (is_kernel_in_hyp_mode())
> 		kvm_timer_init_vhe();
> 	else
>-		cpu_init_hyp_mode(NULL);
>+		cpu_init_hyp_mode();
> 
> 	kvm_arm_init_debug();
> 
friendly ping ...