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SubjectRe: [PATCH 1/5] X86: Hyper-V: Enlighten APIC access
On Wed, 25 Apr 2018, kys@linuxonhyperv.com wrote:
> --- /dev/null
> +++ b/arch/x86/hyperv/hv_apic.c
> @@ -0,0 +1,98 @@
> +// SPDX-License-Identifier: GPL-2.0

Thanks for putting the license identifier in.

> +
> +/*
> + * Hyper-V specific APIC code.
> + *
> + * Copyright (C) 2018, Microsoft, Inc.
> + *
> + * Author : K. Y. Srinivasan <kys@microsoft.com>

But can you please check with your lawyers whether you can avoid the
pointless boilerplate? The SPDX identifier should cover it.

> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms of the GNU General Public License version 2 as published
> + * by the Free Software Foundation.
> + *
> + * This program is distributed in the hope that it will be useful, but
> + * WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
> + * NON INFRINGEMENT. See the GNU General Public License for more
> + * details.
> + *
> + */
> +
> +#include <linux/types.h>
> +#include <asm/hypervisor.h>
> +#include <asm/mshyperv.h>
> +#include <linux/version.h>
> +#include <linux/vmalloc.h>
> +#include <linux/mm.h>
> +#include <linux/clockchips.h>
> +#include <linux/hyperv.h>
> +#include <linux/slab.h>
> +#include <linux/cpuhotplug.h>

We usually order the includes

#include <linux/....>
...
#include <linux/....>

#include <asm/....>
#include <asm/....>


> -void hyperv_init(void);
> +void __init hyperv_init(void);
> void hyperv_setup_mmu_ops(void);
> void hyper_alloc_mmu(void);
> void hyperv_report_panic(struct pt_regs *regs, long err);
> @@ -269,14 +269,16 @@ void hyperv_reenlightenment_intr(struct pt_regs *regs);
> void set_hv_tscchange_cb(void (*cb)(void));
> void clear_hv_tscchange_cb(void);
> void hyperv_stop_tsc_emulation(void);
> +void hv_apic_init(void);
> #else /* CONFIG_HYPERV */
> -static inline void hyperv_init(void) {}
> +static __init inline void hyperv_init(void) {}

The __init on the empty inline function is pointless.

Other than the few nits. This looks well done!

Thanks,

tglx

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