On 08/05/2016 10:59 AM, Lluís Vilanova wrote: > QEMU detects when the guest uses 'mmap' on hypertrace's control channel > file, and then uses 'mprotect' to detect accesses to it, which are used > to trigger traceing event "guest_hypertrace".
s/traceing/tracing/ I'll probably leave the technical review to others, though > +++ b/bsd-user/mmap.c > @@ -21,6 +21,7 @@ > #include "qemu.h" > #include "qemu-common.h" > #include "bsd-mman.h" > +#include "hypertrace/user.h" > > //#define DEBUG_MMAP > > @@ -407,6 +408,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int > prot, > } > } > the_end1: > + hypertrace_guest_mmap(fd, (void *)g2h(start)); Why is the cast to void* needed? -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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