diff options
Diffstat (limited to 'arch/i386/kernel/cpu/mtrr/changelog')
| -rw-r--r-- | arch/i386/kernel/cpu/mtrr/changelog | 229 |
1 files changed, 229 insertions, 0 deletions
diff --git a/arch/i386/kernel/cpu/mtrr/changelog b/arch/i386/kernel/cpu/mtrr/changelog new file mode 100644 index 00000000000..af136853595 --- /dev/null +++ b/arch/i386/kernel/cpu/mtrr/changelog @@ -0,0 +1,229 @@ + ChangeLog + + Prehistory Martin Tischhäuser <martin@ikcbarka.fzk.de> + Initial register-setting code (from proform-1.0). + 19971216 Richard Gooch <rgooch@atnf.csiro.au> + Original version for /proc/mtrr interface, SMP-safe. + v1.0 + 19971217 Richard Gooch <rgooch@atnf.csiro.au> + Bug fix for ioctls()'s. + Added sample code in Documentation/mtrr.txt + v1.1 + 19971218 Richard Gooch <rgooch@atnf.csiro.au> + Disallow overlapping regions. + 19971219 Jens Maurer <jmaurer@menuett.rhein-main.de> + Register-setting fixups. + v1.2 + 19971222 Richard Gooch <rgooch@atnf.csiro.au> + Fixups for kernel 2.1.75. + v1.3 + 19971229 David Wragg <dpw@doc.ic.ac.uk> + Register-setting fixups and conformity with Intel conventions. + 19971229 Richard Gooch <rgooch@atnf.csiro.au> + Cosmetic changes and wrote this ChangeLog ;-) + 19980106 Richard Gooch <rgooch@atnf.csiro.au> + Fixups for kernel 2.1.78. + v1.4 + 19980119 David Wragg <dpw@doc.ic.ac.uk> + Included passive-release enable code (elsewhere in PCI setup). + v1.5 + 19980131 Richard Gooch <rgooch@atnf.csiro.au> + Replaced global kernel lock with private spinlock. + v1.6 + 19980201 Richard Gooch <rgooch@atnf.csiro.au> + Added wait for other CPUs to complete changes. + v1.7 + 19980202 Richard Gooch <rgooch@atnf.csiro.au> + Bug fix in definition of <set_mtrr> for UP. + v1.8 + 19980319 Richard Gooch <rgooch@atnf.csiro.au> + Fixups for kernel 2.1.90. + 19980323 Richard Gooch <rgooch@atnf.csiro.au> + Move SMP BIOS fixup before secondary CPUs call <calibrate_delay> + v1.9 + 19980325 Richard Gooch <rgooch@atnf.csiro.au> + Fixed test for overlapping regions: confused by adjacent regions + 19980326 Richard Gooch <rgooch@atnf.csiro.au> + Added wbinvd in <set_mtrr_prepare>. + 19980401 Richard Gooch <rgooch@atnf.csiro.au> + Bug fix for non-SMP compilation. + 19980418 David Wragg <dpw@doc.ic.ac.uk> + Fixed-MTRR synchronisation for SMP and use atomic operations + instead of spinlocks. + 19980418 Richard Gooch <rgooch@atnf.csiro.au> + Differentiate different MTRR register classes for BIOS fixup. + v1.10 + 19980419 David Wragg <dpw@doc.ic.ac.uk> + Bug fix in variable MTRR synchronisation. + v1.11 + 19980419 Richard Gooch <rgooch@atnf.csiro.au> + Fixups for kernel 2.1.97. + v1.12 + 19980421 Richard Gooch <rgooch@atnf.csiro.au> + Safer synchronisation across CPUs when changing MTRRs. + v1.13 + 19980423 Richard Gooch <rgooch@atnf.csiro.au> + Bugfix for SMP systems without MTRR support. + v1.14 + 19980427 Richard Gooch <rgooch@atnf.csiro.au> + Trap calls to <mtrr_add> and <mtrr_del> on non-MTRR machines. + v1.15 + 19980427 Richard Gooch <rgooch@atnf.csiro.au> + Use atomic bitops for setting SMP change mask. + v1.16 + 19980428 Richard Gooch <rgooch@atnf.csiro.au> + Removed spurious diagnostic message. + v1.17 + 19980429 Richard Gooch <rgooch@atnf.csiro.au> + Moved register-setting macros into this file. + Moved setup code from init/main.c to i386-specific areas. + v1.18 + 19980502 Richard Gooch <rgooch@atnf.csiro.au> + Moved MTRR detection outside conditionals in <mtrr_init>. + v1.19 + 19980502 Richard Gooch <rgooch@atnf.csiro.au> + Documentation improvement: mention Pentium II and AGP. + v1.20 + 19980521 Richard Gooch <rgooch@atnf.csiro.au> + Only manipulate interrupt enable flag on local CPU. + Allow enclosed uncachable regions. + v1.21 + 19980611 Richard Gooch <rgooch@atnf.csiro.au> + Always define <main_lock>. + v1.22 + 19980901 Richard Gooch <rgooch@atnf.csiro.au> + Removed module support in order to tidy up code. + Added sanity check for <mtrr_add>/<mtrr_del> before <mtrr_init>. + Created addition queue for prior to SMP commence. + v1.23 + 19980902 Richard Gooch <rgooch@atnf.csiro.au> + Ported patch to kernel 2.1.120-pre3. + v1.24 + 19980910 Richard Gooch <rgooch@atnf.csiro.au> + Removed sanity checks and addition queue: Linus prefers an OOPS. + v1.25 + 19981001 Richard Gooch <rgooch@atnf.csiro.au> + Fixed harmless compiler warning in include/asm-i386/mtrr.h + Fixed version numbering and history for v1.23 -> v1.24. + v1.26 + 19990118 Richard Gooch <rgooch@atnf.csiro.au> + Added devfs support. + v1.27 + 19990123 Richard Gooch <rgooch@atnf.csiro.au> + Changed locking to spin with reschedule. + Made use of new <smp_call_function>. + v1.28 + 19990201 Zoltán Böszörményi <zboszor@mail.externet.hu> + Extended the driver to be able to use Cyrix style ARRs. + 19990204 Richard Gooch <rgooch@atnf.csiro.au> + Restructured Cyrix support. + v1.29 + 19990204 Zoltán Böszörményi <zboszor@mail.externet.hu> + Refined ARR support: enable MAPEN in set_mtrr_prepare() + and disable MAPEN in set_mtrr_done(). + 19990205 Richard Gooch <rgooch@atnf.csiro.au> + Minor cleanups. + v1.30 + 19990208 Zoltán Böszörményi <zboszor@mail.externet.hu> + Protect plain 6x86s (and other processors without the + Page Global Enable feature) against accessing CR4 in + set_mtrr_prepare() and set_mtrr_done(). + 19990210 Richard Gooch <rgooch@atnf.csiro.au> + Turned <set_mtrr_up> and <get_mtrr> into function pointers. + v1.31 + 19990212 Zoltán Böszörményi <zboszor@mail.externet.hu> + Major rewrite of cyrix_arr_init(): do not touch ARRs, + leave them as the BIOS have set them up. + Enable usage of all 8 ARRs. + Avoid multiplications by 3 everywhere and other + code clean ups/speed ups. + 19990213 Zoltán Böszörményi <zboszor@mail.externet.hu> + Set up other Cyrix processors identical to the boot cpu. + Since Cyrix don't support Intel APIC, this is l'art pour l'art. + Weigh ARRs by size: + If size <= 32M is given, set up ARR# we were given. + If size > 32M is given, set up ARR7 only if it is free, + fail otherwise. + 19990214 Zoltán Böszörményi <zboszor@mail.externet.hu> + Also check for size >= 256K if we are to set up ARR7, + mtrr_add() returns the value it gets from set_mtrr() + 19990218 Zoltán Böszörményi <zboszor@mail.externet.hu> + Remove Cyrix "coma bug" workaround from here. + Moved to linux/arch/i386/kernel/setup.c and + linux/include/asm-i386/bugs.h + 19990228 Richard Gooch <rgooch@atnf.csiro.au> + Added MTRRIOC_KILL_ENTRY ioctl(2) + Trap for counter underflow in <mtrr_file_del>. + Trap for 4 MiB aligned regions for PPro, stepping <= 7. + 19990301 Richard Gooch <rgooch@atnf.csiro.au> + Created <get_free_region> hook. + 19990305 Richard Gooch <rgooch@atnf.csiro.au> + Temporarily disable AMD support now MTRR capability flag is set. + v1.32 + 19990308 Zoltán Böszörményi <zboszor@mail.externet.hu> + Adjust my changes (19990212-19990218) to Richard Gooch's + latest changes. (19990228-19990305) + v1.33 + 19990309 Richard Gooch <rgooch@atnf.csiro.au> + Fixed typo in <printk> message. + 19990310 Richard Gooch <rgooch@atnf.csiro.au> + Support K6-II/III based on Alan Cox's <alan@redhat.com> patches. + v1.34 + 19990511 Bart Hartgers <bart@etpmod.phys.tue.nl> + Support Centaur C6 MCR's. + 19990512 Richard Gooch <rgooch@atnf.csiro.au> + Minor cleanups. + v1.35 + 19990707 Zoltán Böszörményi <zboszor@mail.externet.hu> + Check whether ARR3 is protected in cyrix_get_free_region() + and mtrr_del(). The code won't attempt to delete or change it + from now on if the BIOS protected ARR3. It silently skips ARR3 + in cyrix_get_free_region() or returns with an error code from + mtrr_del(). + 19990711 Zoltán Böszörményi <zboszor@mail.externet.hu> + Reset some bits in the CCRs in cyrix_arr_init() to disable SMM + if ARR3 isn't protected. This is needed because if SMM is active + and ARR3 isn't protected then deleting and setting ARR3 again + may lock up the processor. With SMM entirely disabled, it does + not happen. + 19990812 Zoltán Böszörményi <zboszor@mail.externet.hu> + Rearrange switch() statements so the driver accomodates to + the fact that the AMD Athlon handles its MTRRs the same way + as Intel does. + 19990814 Zoltán Böszörményi <zboszor@mail.externet.hu> + Double check for Intel in mtrr_add()'s big switch() because + that revision check is only valid for Intel CPUs. + 19990819 Alan Cox <alan@redhat.com> + Tested Zoltan's changes on a pre production Athlon - 100% + success. + 19991008 Manfred Spraul <manfreds@colorfullife.com> + replaced spin_lock_reschedule() with a normal semaphore. + v1.36 + 20000221 Richard Gooch <rgooch@atnf.csiro.au> + Compile fix if procfs and devfs not enabled. + Formatting changes. + v1.37 + 20001109 H. Peter Anvin <hpa@zytor.com> + Use the new centralized CPU feature detects. + + v1.38 + 20010309 Dave Jones <davej@suse.de> + Add support for Cyrix III. + + v1.39 + 20010312 Dave Jones <davej@suse.de> + Ugh, I broke AMD support. + Reworked fix by Troels Walsted Hansen <troels@thule.no> + + v1.40 + 20010327 Dave Jones <davej@suse.de> + Adapted Cyrix III support to include VIA C3. + + v2.0 + 20020306 Patrick Mochel <mochel@osdl.org> + Split mtrr.c -> mtrr/*.c + Converted to Linux Kernel Coding Style + Fixed several minor nits in form + Moved some SMP-only functions out, so they can be used + for power management in the future. + TODO: Fix user interface cruft. |