Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1239182

Re: [RFC] asm-generic/pci_iomap.h: make custom PCI BAR requirements explicit

From Arnd Bergmann <arnd@arndb.de>
Newsgroups linux.kernel
Subject Re: [RFC] asm-generic/pci_iomap.h: make custom PCI BAR requirements explicit
Date 2015-10-04 21:10 +0200
Message-ID <qfWPv-Ok-5@gated-at.bofh.it> (permalink)
References <q2C2d-2c4-3@gated-at.bofh.it> <q6rrA-5QO-17@gated-at.bofh.it> <qfip4-1IO-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw


On Saturday 03 October 2015 01:53:46 Luis R. Rodriguez wrote:
> > 
> > Hmm, my gut feeling tells me that your approach won't solve the problem
> > in general. s390 PCI is just weird in many ways and it will occasionally
> > suffer from problems like this (as do other aspects of the s390 architecture
> > that are unlike the rest of the world).
> > 
> > Maybe Martin and Heiko can comment on this, they may have a preference
> > from the s390 point of view.
> 
> Hrm, so S390 is quirky is really odd ways that no other architecture is or
> is at least for now not expected to be ?

Absolutely correct. It is the only architecture I'm aware of that tries to
support PCI that does not use pointer dereferences for MMIO.

	Arnd
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

Re: [RFC] asm-generic/pci_iomap.h: make custom PCI BAR requirements  explicit "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-10-03 02:00 +0200
  Re: [RFC] asm-generic/pci_iomap.h: make custom PCI BAR requirements explicit Arnd Bergmann <arnd@arndb.de> - 2015-10-04 21:10 +0200
    Re: [RFC] asm-generic/pci_iomap.h: make custom PCI BAR requirements  explicit "Luis R. Rodriguez" <mcgrof@suse.com> - 2015-10-05 19:10 +0200

csiph-web