HelenOS-historic
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HelenOS-historic
(root)
/
kernel
/
trunk
/
arch
/
sparc64
/
include
/
barrier.h
– Rev 758
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758
6707 d 6 h
jermar
/kernel/trunk/arch/
sparc64 bugfix.
When disabling IMMU and DMMU the kernel has to perform synchronization operation
(e.g flush %r or membar #Sync instruction). There is no guarantee that the address
contained in %r is in DTLB and therefore the flush instruction can fault. Normally
this would be recognized and fixed by the OpenFirmware Fast Data MMU fault handler.
However, this handler lives in virtually mapped memory and an attempt to execute
there while the MMUs are disabled would result in a nested trap leading to error state.
Replacing flush %r instruction with membar #Sync, wich is sufficient in this case,
fixes this problem.
613
6758 d 5 h
jermar
/kernel/trunk/arch/sparc64/
sparc64 work.
More ITLB and DTLB controlling functions.
569
6762 d 6 h
jermar
/kernel/trunk/
sparc64 work.
Implement functions for reading IMMU and DMMU TLBs.
534
6766 d 9 h
jermar
/
Rename HelenOS/SPARTAN to HelenOS/kernel again.
532
6766 d 10 h
jermar
/
Revert renaming of HelenOS/SPARTAN to HelenOS/kernel because of important pending patch.
501
6778 d 14 h
jermar
/
Rename HelenOS/SPARTAN to HelenOS/kernel.
418
6809 d 8 h
jermar
/SPARTAN/trunk/
sparc64 infrastructure.