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2013 Oct 19
0
MmioTrace: Using the Instruction Decoder, etc.
...nt to the instrumented one. After instrumentation is done, the target driver may start executing. If some original function of the driver contained, say, mov 0xabcd (%rax), %rsi mov %rbx, 0xbeeffeed (%rsi) that will be transformed to something like lea 0xabcd (%rax), %rbx mov %rbx, <local_storage1> mov 0xabcd (%rax), %rsi lea 0xbeeffeed (%rsi), %rbx mov %rbx, <local_storage2> mov %rbx, 0xbeeffeed (%rsi) ... <send the local_storage to the output system> That is, the address which is about to be accessed is determined and stored in 'local_storage', a specia...
2013 Oct 19
3
MmioTrace: Using the Instruction Decoder, etc.
On Fri, 18 Oct 2013 00:11:15 +0400 Eugene Shatokhin <euspectre at gmail.com> wrote: > Hi, > > Good to know that! > > Yes, it should be faster than page faulting, although I haven't done the > benchmarking yet. And yes, it is not needed to disable all but one CPU. In > my current implementation, I use an ordered workqueue to send the data to > the mmapped output