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Open Source and information security mailing list archives
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Date: Sat, 11 Sep 2021 19:54:36 -0400 From: "Michael S. Tsirkin" <mst@...hat.com> To: Andi Kleen <ak@...ux.intel.com> Cc: Dan Williams <dan.j.williams@...el.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>, Peter H Anvin <hpa@...or.com>, Dave Hansen <dave.hansen@...el.com>, Tony Luck <tony.luck@...el.com>, Kirill Shutemov <kirill.shutemov@...ux.intel.com>, Sean Christopherson <seanjc@...gle.com>, Kuppuswamy Sathyanarayanan <knsathya@...nel.org>, X86 ML <x86@...nel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, Linux PCI <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 <linux-arch@...r.kernel.org>, Linux Doc Mailing List <linux-doc@...r.kernel.org>, virtualization@...ts.linux-foundation.org Subject: Re: [PATCH v4 11/15] pci: Add pci_iomap_shared{,_range} On Fri, Sep 10, 2021 at 09:34:45AM -0700, Andi Kleen wrote: > > > that's why > > > an extra level of defense of ioremap opt-in is useful. > > OK even assuming this, why is pci_iomap opt-in useful? > > That never happens before probe - there's simply no pci_device then. > > > Hmm, yes that's true. I guess we can make it default to opt-in for > pci_iomap. > > It only really matters for device less ioremaps. OK. And same thing for other things with device, such as devm_platform_ioremap_resource. If we agree on all that, this will basically remove virtio changes from the picture ;) -- MST
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