Re: [PATCH net-next 02/10] bnx2x: Removing indirect register access

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Thu, 2012-01-26 at 18:01 +0200, Ariel Elior wrote:
> In virtualized environments indirect access to the device may not be supported
> (depending on the Hypervisor type). Indirect device access was used since in
> some harware contexts (i.e. certain chipset and BIOS) every access the driver
> makes across the pci is followed by a BIOS initiated Zero Length Read to the
> same address.
[...]

This is intriguing.  Isn't that a general problem that can affect many
devices?  Can you be more specific about which systems have this
behaviour?

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

--
To unsubscribe from this list: send the line "unsubscribe linux-pci" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [DMA Engine]     [Linux Coverity]     [Linux USB]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [Greybus]

  Powered by Linux