Issue #2576 has been updated by ftigeot.

Status changed from New to Resolved

Bug #2576: sys/vm/device_pager.c old_dev_pager_fault() dev_dmmap needs offset 

* Author: davshao
* Status: Resolved
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
commit f2c2051ee473577d22178d55f782ceebbd88d58f
Date:   Mon Jul 29 22:39:56 2013 +0200

    kernel: Port new device_pager interface from FreeBSD

should probably be amended in sys/vm/device_pager.c, function 
old_dev_pager_fault() to use

paddr = pmap_phys_address(
    dev_dmmap(dev, offset << PAGE_SHIFT, prot));

similar to what had been used in the previous version of dev_pager_getpage().

Without this change, legacy drm systems running say a Radeon 4xxx graphics card 
failed to have dports Xorg start.

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