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From:   Thomas Gleixner <tglx@linutronix.de>
To:     Sean Christopherson <sean.j.christopherson@intel.com>,
        Paolo Bonzini <pbonzini@redhat.com>
Cc:     Paul Mackerras <paulus@ozlabs.org>,
        Sean Christopherson <sean.j.christopherson@intel.com>,
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        Dave Hansen <dave.hansen@linux.intel.com>,
        Andy Lutomirski <luto@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Andrew Morton <akpm@linux-foundation.org>,
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Subject: Re: [PATCH 05/14] x86/mm: Introduce lookup_address_in_mm()
In-Reply-To: <20200108202448.9669-6-sean.j.christopherson@intel.com>
References: <20200108202448.9669-1-sean.j.christopherson@intel.com> <20200108202448.9669-6-sean.j.christopherson@intel.com>
Date:   Thu, 09 Jan 2020 22:04:53 +0100
Message-ID: <871rs8batm.fsf@nanos.tec.linutronix.de>
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Sean Christopherson <sean.j.christopherson@intel.com> writes:

> diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
> index b5e49e6bac63..400ac8da75e8 100644
> --- a/arch/x86/include/asm/pgtable_types.h
> +++ b/arch/x86/include/asm/pgtable_types.h
> @@ -561,6 +561,10 @@ static inline void update_page_count(int level, unsigned long pages) { }
>  extern pte_t *lookup_address(unsigned long address, unsigned int *level);
>  extern pte_t *lookup_address_in_pgd(pgd_t *pgd, unsigned long address,
>  				    unsigned int *level);
> +
> +struct mm_struct;
> +pte_t *lookup_address_in_mm(struct mm_struct *mm, unsigned long address,
> +			    unsigned int *level);

Please keep the file consistent and use extern even if not required.

Other than that:

Reviewed-by: Thomas Gleixner <tglx@linutronix.de>