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SubjectRe: [PATCH v2 1/2] PCI: Add 'nodomains' boot option, and pci_domains_supported global
Jeff Garzik wrote:
> * Introduce pci_domains_supported global, hardcoded to zero if
> !CONFIG_PCI_DOMAINS.
>
> * Introduce 'nodomains' boot option, which clears pci_domains_supported
> on platforms that enable it by default (x86, x86-64, and others when
> they are converted to use this).
>
> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
> ---
> Revised per Andi's comments, and split into two patches.
>
> As found in jgarzik/misc-2.6.git#ALL and jgarzik/misc-2.6.git#pciseg.
>
> Documentation/kernel-parameters.txt | 2 ++
> drivers/pci/pci.c | 13 +++++++++++++
> include/linux/pci.h | 7 +++++--
> 3 files changed, 20 insertions(+), 2 deletions(-)

As a note, if this wasn't obvious, this was not implemented in
x86-specific code because I think other arches can/should be able to
hook into this.

The default !CONFIG_PCI_DOMAINS implementation continues to work for all
such arches.


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