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[Xen-devel] Re: possible changes was Re: [PATCH] make domu_debug run-time option + fix int3 handling for MP

No differentiation is made between setting / removing int3 and other
modifications to memory in ptrace, /proc or the GDB stub protocol. What you're basically asking is to move debugger state into xen by having xen know about who put what breakpoints where. This is a non-trivial imposition and incompatible
with the tools with which I am acquainted.

How else can we be sure what to do with int3 traps? Unless Xen can account for debugger-inserted int3's, any 'solution' will be a kludge.

 -- Keir

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