linux-kernel - Re: [PATCH v5 12/16] PCI: Add pci_iomap_host_shared(), pci_iomap_host_shared

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Message-ID: <YW1lc5Y2P1zRc2kp@kroah.com>
Date:   Mon, 18 Oct 2021 14:15:47 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     Andi Kleen <ak@...ux.intel.com>,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Andy Lutomirski <luto@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Richard Henderson <rth@...ddle.net>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        James E J Bottomley <James.Bottomley@...senpartnership.com>,
        Helge Deller <deller@....de>,
        "David S . Miller" <davem@...emloft.net>,
        Arnd Bergmann <arnd@...db.de>,
        Jonathan Corbet <corbet@....net>,
        Paolo Bonzini <pbonzini@...hat.com>,
        David Hildenbrand <david@...hat.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        Josh Poimboeuf <jpoimboe@...hat.com>,
        Peter H Anvin <hpa@...or.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Tony Luck <tony.luck@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Kirill Shutemov <kirill.shutemov@...ux.intel.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Kuppuswamy Sathyanarayanan <knsathya@...nel.org>,
        x86@...nel.org, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org, linux-alpha@...r.kernel.org,
        linux-mips@...r.kernel.org, linux-parisc@...r.kernel.org,
        sparclinux@...r.kernel.org, linux-arch@...r.kernel.org,
        linux-doc@...r.kernel.org,
        virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH v5 12/16] PCI: Add pci_iomap_host_shared(),
 pci_iomap_host_shared_range()

On Mon, Oct 11, 2021 at 07:59:17AM -0400, Michael S. Tsirkin wrote:
> On Sun, Oct 10, 2021 at 03:22:39PM -0700, Andi Kleen wrote:
> > 
> > > To which Andi replied
> > > 	One problem with removing the ioremap opt-in is that
> > > 	it's still possible for drivers to get at devices without going through probe.
> > > 
> > > To which Greg replied:
> > > https://lore.kernel.org/all/YVXBNJ431YIWwZdQ@kroah.com/
> > > 	If there are in-kernel PCI drivers that do not do this, they need to be
> > > 	fixed today.
> > > 
> > > Can you guys resolve the differences here?
> > 
> > 
> > I addressed this in my other mail, but we may need more discussion.
> 
> Hopefully Greg will reply to that one.

Note, when wanting Greg to reply, someone should at the very least cc:
him.

{sigh}

greg k-h