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179886 |
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20-Jun-2008 |
alc |
Make preparations for increasing the size of the kernel virtual address space on the amd64 architecture. The amd64 architecture requires kernel code and global variables to reside in the highest 2GB of the 64-bit virtual address space. Thus, KERNBASE cannot change. However, KERNBASE is sometimes used as the start of the kernel virtual address space. Henceforth, VM_MIN_KERNEL_ADDRESS should be used instead. Since KERNBASE and VM_MIN_KERNEL_ADDRESS are still the same address, there should be no visible effect from this change (yet).
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174195 |
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02-Dec-2007 |
rwatson |
Break out stack(9) from ddb(4):
- Introduce per-architecture stack_machdep.c to hold stack_save(9). - Introduce per-architecture machine/stack.h to capture any common definitions required between db_trace.c and stack_machdep.c. - Add new kernel option "options STACK"; we will build in stack(9) if it is defined, or also if "options DDB" is defined to provide compatibility with existing users of stack(9).
Add new stack_save_td(9) function, which allows the capture of a stacktrace of another thread rather than the current thread, which the existing stack_save(9) was limited to. It requires that the thread be neither swapped out nor running, which is the responsibility of the consumer to enforce.
Update stack(9) man page.
Build tested: amd64, arm, i386, ia64, powerpc, sparc64, sun4v Runtime tested: amd64 (rwatson), arm (cognet), i386 (rwatson)
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