| Commit message (Collapse) | Author | Age | Files | Lines |
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David Woodhouse (dwmw2@infradead.org).
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with minor changes by me.
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detection. This also tweaks cpu_probe() to use bits 15:8 of PRId as
a company ID, as per the mips32/mips64 specs, and use bits 7:0 as the
processor ID within the company. Patch from Justin with mods and some
additional bits by me.
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set_cp0_* and change_cp0_* which makes the kernel code somewhat more
readable. Going through the kernel code I notices some stupid abuse of
the old function like set_cp0_status(ST0_BEV, 1) - this clear ST0_BEV
but actually looks like attempting to set it and other abuses, so will
people please look over their code again.
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-Werror clean.
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the following:
o works in case a constant address is passed to get_dbe/put_dbe
o uses faster binary search :-)
o the kernel are linked successfully even if get_dbe/put_dbe aren't
used
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fork().
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certain ISA levels explicitely configurable
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o only code for the configured CPU is compiled
and linked (saves ~100k for R3000 kernels!)
o removed a lot of indirect function calls
o removed Ralf's "cowboy patch"
o added sanity check for DECstations (print warning
if the kernel is configured for the wrong CPU)
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Indigo anyone? :-)
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now. Let's hope I don't break anything :)
- Ulf
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o Implement handlers for VCEI / VCED exceptions. Install them only on
SC / MC versions of the R4000 and R4400 which saves us four
instructions per exception on other CPUs.
o Print the number of VCED / VCEI exceptions in /proc/cpuinfo, iff
available.
o Many performance fixes for the SC / MC versions of R4000 and R4400.
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o New Newport console code.
o New G364 console code.
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- Handle lazy fpu context switches correctly for ptrace(2).
- Don't read $fcr31 on context switch, it's pure bloat.
- New processes get $fcr31 initialized to no exceptions.
- First beginnings of floating point support kernel code. For now we
only can handle cvt.w.s and cvt.w.d instructions where the source
register is a NaN, infinity or denorm. This is good enough to get
Mozilla up.
- Don't send SIGFPE on every floating point instruction we don't know
how to handle, rather just complain.
- Cleanup headerfile inclusions in the HPC3 code.
- Fix the definition of PAGE_NONE.
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user would expect it to work, like under IRIX with the exception
that the machine doesn't freeze solid as long as the button is
pressed.
o Realtime clock driver (CONFIG_SGI_DS1286) for the Indy. Includes
/proc/rtc interface which tells you everything about your RTC which
you never wanted to know. You have to configure this driver into
your kernel or you won't be able to set your RTC.
o Some cleanup of the RTC interfaces in Linux, RTC does no longer mean
PC-style RTC. The userland interface definitions are now in
<linux/rtc.h>. We still need some more cleanup until we can enable
several RTC drivers.
o Virtual aliasing fixes for ptrace(2).
o Add ptrace(2) interface definitions needed to build GDB to
<asm/ptrace.h>.
o Revert to some older routines, the newer optimized ones are buggy.
o On panic the Indy LED will be blinking fast crying to the admin
passing by [music from Rocky Horror show] ``fix me, fix me, fix
me''.
o On panic the power button will only reboot the machine, not power it
down. That's probably more what people want it to do.
o Remove some old files.
o Did I tell you that CVS is buggy?
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o Cleanup the machine dependencies of floppy and rtc. The driver for
the Dallas thingy in the Indy is still missing.
o Handle allocation of zero'd pages correct for R4000SC / R4400SC.
o Page colouring shit to match the virtual and physical colour of all
mapped pages. This tends to produce extreme fragmentation problems,
so it's deactivated for now. Users of R4000SC / R4400SC may re-enable
the code in arch/mips/mm/init.c by removing the definition of
CONF_GIVE_A_SHIT_ABOUT_COLOURS. Should get them somewhat further -
but don't shake to hard ...
o Fixed ptrace(2)-ing of syscalls, strace is now working again.
o Fix the interrupt forwarding from the keyboard driver to the psaux
driver, PS/2 mice are now working on the Indy. The fix is somewhat
broken as it prevents generic kernels for Indy and machines which handle
things different.
o Things I can't remember.
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o New clear_user.
o Memcpy now efficiently copies the (src^dest)&3 != 0.
o Memmove new correctly deals with overlaps
o Rewrite csum_partial in assembler.
o Rewrte csum_partial_from_user in assembler.
o __copy_user is now integrated with memcpy.
o get_user now returns a zero value on error.
o copy_from_user now clears the destination buffer on error.
o strncpy_user now has a more efficient caller routine.
o strlen_user now has a more efficient caller routines and is faster.
o The unaligned handler is now much cleaner. It's now also save from
interrupt. Some more esotheric bugs fixed as well.
o Don't export bcopy anymore, it's now a inline function.
o Delete ancient junk from the first days of Linux/MIPS.
o Delete dead code in indy_sc.c.
o Including the IDE driver doesn't crash an Indy anymore.
o Eleminate active_ds. We now use current_ds directly in the thread
structure which is faster and threadsafe. Saves almost 2kb on the
kernel.
o Serial console should work again.
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o First round of bugfixes for the SC/MC CPUs.
o FPU context switch fixes.
o Lazy context switches.
o Faster syscalls.
o Removed dead code.
o Shitloads of other things I forgot ...
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Pentium :-)
o Little bit smarter handling of unimplemented exceptions.
o Fix FPU context switches.
o Fix reboot / halt. Powerdown in software still doesn't work.
o Fix the fix for handling of return values of interrupted syscalls.
o Handling of the Indy second level cache now works as spec'ed. Purely
cosmentic, this was not causing any problems.
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o Just count missed heartbeats on Indys but don't print a messages. This
was a bug by itself.
o Fix a crash in exit_mmap().
o Fix scanmem().
o Fix clear_active_bh(), a ~ was missing causing weak performance.
o Remove experimental cache instructions from stackframe.h. It wasn't
improving performance as I was hoping.
o Shrink the size of the exception handler routines in uaccess.h.
o Cleanup, remove dead code in various files.
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o New faster syscalls for 2.1.x, too
o Upgrade to 2.1.89.
Don't try to run this. It's flaky as hell. But feel free to debug ...
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