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(root)/kernel/trunk/arch/ia64/src/proc/scheduler.c – Rev 936

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Rev	Age	Author	Path	Log message	Diff
935	6622 d 19 h	vana	/kernel/trunk/	Two frame stack (standard stack + RSE) on Itanium
916	6628 d 1 h	jermar	/kernel/trunk/arch/ia64/src/	ia64 work. Support switch from userspace register stack in heavyweight handler.
912	6629 d 16 h	jermar	/kernel/trunk/	ia64 work. ivt.S: Detect userspace stack in heavyweight handler and switch to kernel stack. Remember the old stack pointer. As for register stack, kernel stack is assumed still. Fix alignment issues that showed when STACK_ITEMS was odd. Fix ld8 instruction that did subtraction of 8 instead of addition of 8. scheduler.c: Change before_thread_runs_arch() to calculate address of top of the stack for the interrupt handler.
911	6629 d 20 h	jermar	/kernel/trunk/arch/ia64/	ia64 work. Change heavyweight interrupt handler to use bank 0 registers instead of AR.KR0 and AR.KR1. This prevents userspace from the possibility to see what addresses are being used by kernel. Store kernel stack address in bank 0 r23 instead of AR.KR7. Again, userspace will not be able to read the address of its kernel stack. Increase FRAME_SIZE to 64K as this is the first supported page size in which will fit thread's combined register and memory stack. (RSE can write out as many as 16K.)
903	6632 d 18 h	jermar	/kernel/trunk/arch/ia64/	ia64 work. Add code needed for running multiple address spaces and location of kernel stack after switch from userspace.
902	6633 d 23 h	jermar	/kernel/trunk/	ia64 work. More capable TLB miss handlers. The ia64 kernel now passes mm/mapping1 test. Fix generic hash table to properly initialize lists. Change page_ht() to properly initialize inserted PTE's. Change format of generic page hash table PTE's.
901	6634 d 1 h	jermar	/kernel/trunk/arch/	ia64 work. Provide PA2KA(identity) mapping for kernel data references via Alternate Data TLB Fault handler. Add before_thread_runs_arch() that maps kstack, if necessary. Add easy to use dtlb_mapping_insert() for comfortable insertion of kernel data mappings.