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author | Jason Wessel <jason.wessel@windriver.com> | 2010-05-20 21:04:30 -0500 |
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committer | Jason Wessel <jason.wessel@windriver.com> | 2010-05-20 21:04:30 -0500 |
commit | 031acd8c42edd61070f81c51edc89e83147a3d0e (patch) | |
tree | f0f848ca6b19ec049b00a430bb0fba1035acb76b /arch/x86/kernel/check.c | |
parent | 0b4b3827db386ec6034a5aba1261025b039440c2 (diff) |
x86,kgdb: Implement early hardware breakpoint debugging
It is not possible to use the hw_breakpoint.c API prior to mm_init(),
but it is possible to use hardware breakpoints with the kernel
debugger.
Prior to smp_init() it is possible to simply write to the dr registers
of the boot cpu directly. This can be used up until the
kgdb_arch_late() is invoked, at which point the standard hw_breakpoint.c
API will get used.
CC: Frederic Weisbecker <fweisbec@gmail.com>
CC: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Diffstat (limited to 'arch/x86/kernel/check.c')
0 files changed, 0 insertions, 0 deletions