src/sys/ia64, branch upstream/11.0.0

Remove ia64.

2014-07-07T00:27:09Z

This includes: o All directories named *ia64* o All files named *ia64* o All ia64-specific code guarded by __ia64__ o All ia64-specific makefile logic o Mention of ia64 in comments and documentation This excludes: o Everything under contrib/ o Everything under crypto/ o sys/xen/interface o sys/sys/elf_common.h Discussed at: BSDcan

Introduce pmap_unwire(). It will replace pmap_change_wiring(). There are

2014-07-06T17:42:38Z

several reasons for this change: pmap_change_wiring() has never (in my memory) been used to set the wired attribute on a virtual page. We have always used pmap_enter() to do that. Moreover, it is not really safe to use pmap_change_wiring() to set the wired attribute on a virtual page. The description of pmap_change_wiring() says that it assumes the existence of a mapping in the pmap. However, non-wired mappings may be reclaimed by the pmap at any time. (See pmap_collect().) Many implementations of pmap_change_wiring() will crash if the mapping does not exist. pmap_unwire() accepts a range of virtual addresses, whereas pmap_change_wiring() acts upon a single virtual page. Since we are typically unwiring a range of virtual addresses, pmap_unwire() will be more efficient. Moreover, pmap_unwire() allows us to unwire superpage mappings. Previously, we were forced to demote the superpage mapping, because pmap_change_wiring() only allowed us to express the unwiring of a single base page mapping at a time. This added to the overhead of unwiring for large ranges of addresses, including the implicit unwiring that occurs at process termination. Implementations for arm and powerpc will follow. Discussed with: jeff, marcel Reviewed by: kib Sponsored by: EMC / Isilon Storage Division

Improve the KTR logs by naming the values.

2014-07-02T22:09:06Z

Add vt(4) devices and options to NOTES

2014-07-01T00:22:54Z

Reviewed by: marius (earlier version)

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28T03:56:17Z

Revert r267961, r267973:

2014-06-27T22:05:21Z

These changes prevent sysctl(8) from returning proper output, such as: 1) no output from sysctl(8) 2) erroneously returning ENOMEM with tools like truss(1) or uname(1) truss: can not get etype: Cannot allocate memory

Extend the meaning of the CTLFLAG_TUN flag to automatically check if

2014-06-27T16:33:43Z

there is an environment variable which shall initialize the SYSCTL during early boot. This works for all SYSCTL types both statically and dynamically created ones, except for the SYSCTL NODE type and SYSCTLs which belong to VNETs. A new flag, CTLFLAG_NOFETCH, has been added to be used in the case a tunable sysctl has a custom initialisation function allowing the sysctl to still be marked as a tunable. The kernel SYSCTL API is mostly the same, with a few exceptions for some special operations like iterating childrens of a static/extern SYSCTL node. This operation should probably be made into a factored out common macro, hence some device drivers use this. The reason for changing the SYSCTL API was the need for a SYSCTL parent OID pointer and not only the SYSCTL parent OID list pointer in order to quickly generate the sysctl path. The motivation behind this patch is to avoid parameter loading cludges inside the OFED driver subsystem. Instead of adding special code to the OFED driver subsystem to post-load tunables into dynamically created sysctls, we generalize this in the kernel. Other changes: - Corrected a possibly incorrect sysctl name from "hw.cbb.intr_mask" to "hw.pcic.intr_mask". - Removed redundant TUNABLE statements throughout the kernel. - Some minor code rewrites in connection to removing not needed TUNABLE statements. - Added a missing SYSCTL_DECL(). - Wrapped two very long lines. - Avoid malloc()/free() inside sysctl string handling, in case it is called to initialize a sysctl from a tunable, hence malloc()/free() is not ready when sysctls from the sysctl dataset are registered. - Bumped FreeBSD version to indicate SYSCTL API change. MFC after: 2 weeks Sponsored by: Mellanox Technologies

- Modify vm_page_unwire() and vm_page_enqueue() to directly accept

2014-06-16T18:15:27Z

the queue where to enqueue pages that are going to be unwired. - Add stronger checks to the enqueue/dequeue for the pagequeues when adding and removing pages to them. Of course, for unmanaged pages the queue parameter of vm_page_unwire() will be ignored, just as the active parameter today. This makes adding new pagequeues quicker. This change effectively modifies the KPI. __FreeBSD_version will be, however, bumped just when the full cache of free pages will be evicted. Sponsored by: EMC / Isilon storage division Reviewed by: alc Tested by: pho

Restore comments accidentally removed.

2014-06-06T04:08:55Z

MFC after: 3 days

Bring in the mpr(4) driver for LSI's MPT3 12Gb SAS controllers.

2014-05-02T20:25:09Z

This is derived from the mps(4) driver, but it supports only the 12Gb IT and IR hardware including the SAS 3004, SAS 3008 and SAS 3108. Some notes about this driver: o The 12Gb hardware can do "FastPath" I/O, and that capability is included in this driver. o WarpDrive functionality has been removed, since it isn't supported in the 12Gb driver interface. o The Scatter/Gather list handling code is significantly different between the 6Gb and 12Gb hardware. The 12Gb boards support IEEE Scatter/Gather lists. Thanks to LSI for developing and testing this driver for FreeBSD. share/man/man4/mpr.4: mpr(4) man page. sys/dev/mpr/*: mpr(4) driver files. sys/modules/Makefile, sys/modules/mpr/Makefile: Add a module Makefile for the mpr(4) driver. sys/conf/files: Add the mpr(4) driver. sys/amd64/conf/GENERIC, sys/i386/conf/GENERIC, sys/mips/conf/OCTEON1, sys/sparc64/conf/GENERIC: Add the mpr(4) driver to all config files that currently have the mps(4) driver. sys/ia64/conf/GENERIC: Add the mps(4) and mpr(4) drivers to the ia64 GENERIC config file. sys/i386/conf/XEN: Exclude the mpr module from building here. Submitted by: Steve McConnell MFC after: 3 days Tested by: Chris Reeves Sponsored by: LSI, Spectra Logic Relnotes: LSI 12Gb SAS driver mpr(4) added