On Thu, 7 Oct 2010, Paolo Bonzini wrote: > On 10/06/2010 11:34 PM, Blue Swirl wrote: > > Compiling with GCC 4.6.0 20100925 produced warnings: > > /src/qemu/target-i386/op_helper.c: In function 'switch_tss': > > /src/qemu/target-i386/op_helper.c:283:53: error: variable 'new_trap' > > set but not used [-Werror=unused-but-set-variable] > > > > Fix by deleting the variable. > > Again, this warning tells us the emulation is incorrect, so it's wrong to > remove it. >
http://support.amd.com/us/Processor_TechDocs/24593.pdf 12.2.5 T (Trap) Bit--â– Bit 0 of byte 64h, static field. This bit, when set to1, causes a debug exception (#DB) to occur on a task switch. See "Beakpoint Instruction (INT3)" page 340 for additional information. current code never checks and never traps, which is indeed not correct. -- mailto:av1...@comtv.ru
