Changes in "request_mem_region()" ("__request_region()") now seem to force PCI/Bus alignment upon the requested region. It appears as though somebody thought this would only used to reserve address-space on a PCI/Bus.
Linux-2.6.12.5 and all known previous versions back to linux-2.4.26 worked fine. This breaks several high-speed data-acquisition boards and it isn't easy to fix. Since I allocate 16 megabytes of address- space, aligned on a PAGE boundary, I would have to allocate 4096 blocks of PAGE_SIZE and keep track of them for module unload. This is an egregious mistake. One can't make such arbitrary rules when interfacing to an operating system. The only reason for the alignment issues on a PCI/Bus was to save the cost of decode. Since, at least the ix86, can access a single bit anywhere in memory, one should not create such constraints out of thin air. Maybe this is just a coding error and not a deliberate constraint? Please fix. Cheers, Dick Johnson Penguin : Linux version 2.6.13 on an i686 machine (5589.55 BogoMips). Warning : 98.36% of all statistics are fiction. . I apologize for the following. I tried to kill it with the above dot : **************************************************************** The information transmitted in this message is confidential and may be privileged. Any review, retransmission, dissemination, or other use of this information by persons or entities other than the intended recipient is prohibited. If you are not the intended recipient, please notify Analogic Corporation immediately - by replying to this message or by sending an email to [EMAIL PROTECTED] - and destroy all copies of this information, including any attachments, without reading or disclosing them. Thank you. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/