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