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Date:   Tue, 12 Oct 2021 12:49:06 -0700
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Subject: Re: [PATCH v5 12/16] PCI: Add pci_iomap_host_shared(),
 pci_iomap_host_shared_range()
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To:     Dan Williams <dan.j.williams@intel.com>,
        "Reshetova, Elena" <elena.reshetova@intel.com>
Cc:     "Michael S. Tsirkin" <mst@redhat.com>,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@linux.intel.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        Peter Zijlstra <peterz@infradead.org>,
        "Lutomirski, Andy" <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>,
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        "David S . Miller" <davem@davemloft.net>,
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        Peter H Anvin <hpa@zytor.com>,
        "Hansen, Dave" <dave.hansen@intel.com>,
        "Luck, Tony" <tony.luck@intel.com>,
        Kirill Shutemov <kirill.shutemov@linux.intel.com>,
        Sean Christopherson <seanjc@google.com>,
        Kuppuswamy Sathyanarayanan <knsathya@kernel.org>,
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From:   Andi Kleen <ak@linux.intel.com>
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On 10/12/2021 12:13 PM, Dan Williams wrote:
> On Tue, Oct 12, 2021 at 11:57 AM Reshetova, Elena
> <elena.reshetova@intel.com> wrote:
>>
>>> I suspect the true number is even higher because that doesn't include IO
>>> inside calls to other modules and indirect pointers, correct?
>> Actually everything should be included. Smatch has cross-function db and
>> I am using it for getting the call chains and it follows function pointers.
>> Also since I am starting from a list of individual read IOs, every single
>> base read IO in drivers/* should be covered as far as I can see. But if it uses
>> some weird IO wrappers then the actual list might be higher.
> Why analyze individual IO calls? I thought the goal here was to
> disable entire classes of ioremap() users?

This is everything that would need to be moved somewhere else if we 
didn't disable the entire classes of ioremap users.

-Andi