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Rev Age Author Path Log message Diff
2170 6311 d 10 h jermar /trunk/kernel/ Simplify synchronization in as_switch().
The function was oversynchronized, which
was causing deadlocks on the address
space mutex.

Now, address spaces can only be switched
when the asidlock is held. This also protects
stealing of ASIDs. No other synchronization
is necessary.
 
2169 6311 d 11 h kebrt /branches/arm/kernel/arch/arm32/src/ debug print added  
2168 6311 d 11 h kebrt /branches/arm/kernel/arch/arm32/ context save/restore added  
2167 6311 d 11 h kebrt /branches/arm/kernel/arch/arm32/src/ debugging printf added  
2166 6311 d 11 h kebrt /branches/arm/kernel/arch/arm32/include/ context added  
2165 6311 d 11 h kebrt /branches/arm/boot/arch/arm32/loader/ indenting  
2164 6312 d 13 h jancik /branches/arm/tools/ ALf: correction .. wrong version previosly commited  
2163 6312 d 13 h jancik /branches/arm/kernel/arch/arm32/ Alf : TLB support  
2162 6312 d 20 h stepan /branches/arm/kernel/arch/arm32/ interrupt enabling/disabling  
2161 6313 d 13 h jermar /trunk/kernel/arch/sparc64/src/mm/ Fix TSB bug during TSB refill.
When one wants to enable a TSB entry, he or she should set the
entry invalid bit to false, as opposed to setting it to true.
 
2160 6313 d 13 h decky /trunk/boot/arch/ remove duplicate dependency  
2159 6313 d 18 h kebrt /branches/arm/kernel/arch/arm32/ kernel_image_start, arch_pre_main added  
2158 6313 d 18 h kebrt /branches/arm/boot/arch/arm32/loader/ __builtin_memcpy used  
2157 6313 d 20 h jancik /branches/arm/tools/ Cygwin with TurtoiseSVN has problem with symlinks ... this script solves this.

Run this after downloading sources and before compilation.

Alf
 
2156 6313 d 20 h kebrt /branches/arm/boot/generic/ link added  
2155 6313 d 22 h kebrt /branches/arm/kernel/arch/arm32/ kernel init now only halts the simulator  
2154 6313 d 22 h kebrt /branches/arm/boot/arch/arm32/loader/ jump to kernel fixed  
2153 6313 d 22 h kebrt /branches/arm/boot/arch/arm32/loader/ memcpy changed to gcc-generated  
2152 6313 d 22 h kebrt /branches/arm/boot/arch/arm32/loader/ comments  
2151 6313 d 22 h kebrt /branches/arm/boot/arch/arm32/loader/ missing dependencies  
2150 6314 d 0 h kebrt /branches/arm/boot/genarch/ softint added to boot  
2149 6314 d 6 h jancik /branches/arm/kernel/arch/arm32/include/  
2148 6314 d 6 h jancik /branches/arm/kernel/doc/  
2147 6314 d 6 h jancik /branches/arm/kernel/arch/arm32/include/ alf: Page table structure  
2146 6314 d 10 h kebrt /branches/arm/kernel/arch/arm32/ small changes for gxemul (elf->binary), OUTPUT_ARCH added  
2145 6314 d 10 h kebrt /branches/arm/boot/arch/arm32/ first version of arm boot loader, still cannot jump to kernel  
2144 6314 d 11 h jermar /trunk/kernel/arch/sparc64/src/mm/ Fix TSB size.  
2143 6314 d 17 h jermar /trunk/kernel/arch/sparc64/include/ Remove unneeded enum member.  
2142 6314 d 17 h jermar /trunk/kernel/generic/include/mm/ Remove out of date comment.  
2141 6315 d 9 h jermar /trunk/ The Ultimate Solution To Illegal Virtual Aliases.
It is better to avoid them completely than to fight them.
Switch the sparc64 port to 16K pages. The TLBs and TSBs
continue to operate with 8K pages only. Page tables and
other generic parts operate with 16K pages.

Because the MMU doesn't support 16K directly, each 16K
page is emulated by a pair of 8K pages. With 16K pages,
illegal aliases cannot be created in 16K D-cache.
 
2140 6315 d 10 h decky /branches/gc/ add garbage collector branch  
2139 6315 d 10 h decky /trunk/contrib/toolchain/ move to GCC 4.1.2, make scripts really host platform independent
remove orphaned libobjc
 
2138 6315 d 12 h decky /trunk/contrib/toolchain/ revert previous change (libobjc is actually HOST platform dependent)  
2137 6315 d 13 h kebrt /branches/arm/contrib/toolchain/ typo  
2136 6315 d 13 h kebrt /branches/arm/kernel/doc/ new developer  
2135 6315 d 17 h stepan /branches/arm/kernel/doc/ test commit  
2134 6316 d 13 h jermar /trunk/kernel/ Reworked handling of illegal virtual aliases caused by frame reuse.
We moved the incomplete handling from backend's frame method to
backend's page_fault method. The page_fault method is the one that
can create an illegal alias if it writes the userspace frame using
kernel address with a different page color than the page to which is
this frame mapped in userspace. When we detect this, we do D-cache
shootdown on all processors (!!!).

If we add code that accesses userspace memory from kernel address
space, we will have to check for illegal virtual aliases at all such
places.

I tested this on a 4-way simulated E6500 and a real-world Ultra 5,
which has unfortunatelly only one processor.

This solves ticket #26.
 
2133 6316 d 13 h jermar /trunk/kernel/generic/src/mm/ Coding style and indentation fixes.  
2132 6317 d 19 h jermar /trunk/kernel/generic/src/mm/ Fix coding style in the address space area backends.  
2131 6318 d 16 h decky /branches/ add development branches