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

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.