Hi. On Fri, 2007-04-20 at 04:21 -0700, Petr Vandrovec wrote: > Andi Kleen wrote: > > Xavier Bestel <[email protected]> writes: > > > >> On Fri, 2007-04-20 at 00:46 +0200, roland wrote: > >> > >>> We just quietly added an exciting feature to Workstation 6.0. I believe it > >>> will make WS6 a great tool for Linux kernel development. You can now debug > >>> kernel of Linux VM with gdb running on the Host without changing anything in > >>> the Guest VM. No kdb, no recompiling and no need for second machine. All you > >>> need is a single line in VM's configuration file. > >> I think qemu has the exact same feature. > > > > It doesn't seem to work for x86-64 there though. > > Hello, > > Do you mean with qemu or with VMware? Yes, we do not support replay > with 64bit guests, but debug interface should just work. Only gotcha is > that for 64bit guest you need another option: > > debugStub.listen.guest64 = "TRUE" Ah. That might help :) > and then you need to attach gdb to port 8864 (*). Unfortunately it does > not seem possible to build gdb which would support 16bit/32bit code > while using 64bit gdb on-wire format, so there are two interfaces. And > if you single-step switch from 64bit mode to 32bit mode or back, you > also have to switch gdbs. Yes, it is a bit unintuitive, and > additionally one gdb silently ignores breakpoints set up by other gdb, > so you need to keep breakpoints in sync between two gdbs yourself :-( > > (*) If you are using gdb which has both 32bit and 64bit support, be sure > to issue appropriate 'set architecture xxx' before 'target remote > localhost:88xx' (i386:x86-64 for port 8864, i386 or i8086 for port > 8832). Otherwise gdb is going to die complaining it could not parse > remote reply. That too. Thanks! Nigel
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