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Date:   Fri, 13 Aug 2021 09:02:36 +0100
From:   Christoph Hellwig <hch@infradead.org>
To:     Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc:     Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Peter Zijlstra <peterz@infradead.org>,
        Andy Lutomirski <luto@kernel.org>,
        Bjorn Helgaas <bhelgaas@google.com>,
        Richard Henderson <rth@twiddle.net>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        James E J Bottomley <James.Bottomley@hansenpartnership.com>,
        Helge Deller <deller@gmx.de>,
        "David S . Miller" <davem@davemloft.net>,
        Arnd Bergmann <arnd@arndb.de>,
        Jonathan Corbet <corbet@lwn.net>,
        "Michael S . Tsirkin" <mst@redhat.com>,
        Peter H Anvin <hpa@zytor.com>,
        Dave Hansen <dave.hansen@intel.com>,
        Tony Luck <tony.luck@intel.com>,
        Dan Williams <dan.j.williams@intel.com>,
        Andi Kleen <ak@linux.intel.com>,
        Kirill Shutemov <kirill.shutemov@linux.intel.com>,
        Sean Christopherson <seanjc@google.com>,
        Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
        x86@kernel.org, linux-kernel@vger.kernel.org,
        linux-pci@vger.kernel.org, linux-alpha@vger.kernel.org,
        linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org,
        sparclinux@vger.kernel.org, linux-arch@vger.kernel.org,
        linux-doc@vger.kernel.org,
        virtualization@lists.linux-foundation.org
Subject: Re: [PATCH v4 11/15] pci: Add pci_iomap_shared{,_range}
Message-ID: <YRYnHNOSeS/kQW2H@infradead.org>
References: <20210805005218.2912076-1-sathyanarayanan.kuppuswamy@linux.intel.com>
 <20210805005218.2912076-12-sathyanarayanan.kuppuswamy@linux.intel.com>
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In-Reply-To: <20210805005218.2912076-12-sathyanarayanan.kuppuswamy@linux.intel.com>
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On Wed, Aug 04, 2021 at 05:52:14PM -0700, Kuppuswamy Sathyanarayanan wrote:
> +extern void __iomem *pci_iomap_shared(struct pci_dev *dev, int bar,
> +				      unsigned long max);
> +extern void __iomem *pci_iomap_shared_range(struct pci_dev *dev, int bar,
> +					    unsigned long offset,
> +					    unsigned long maxlen);

No need for externs here.

> +/**
> + * pci_iomap_shared_range - create a virtual shared mapping cookie for a
> + *                          PCI BAR

This reads like completely garbage from a markow chain.