[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH RFC V3 1/5] xen: Emulate with no writes
On 07/24/2014 02:20 PM, Tim Deegan wrote: > Hi, > > At 15:34 +0300 on 23 Jul (1406126080), Razvan Cojocaru wrote: >> +static const struct x86_emulate_ops hvm_emulate_ops_no_write = { >> + .read = hvmemul_read, >> + .insn_fetch = hvmemul_insn_fetch, >> + .write = hvmemul_write_discard, >> + .cmpxchg = hvmemul_cmpxchg, >> + .rep_ins = hvmemul_rep_ins, >> + .rep_outs = hvmemul_rep_outs, >> + .rep_movs = hvmemul_rep_movs, > > If you want to discard all writes from this guest instruction, you'll > also need modified versions of the rep_ins, rep_movs and cmpxchg > handlers. Noted, thanks. >> + .read_segment = hvmemul_read_segment, >> + .write_segment = hvmemul_write_segment, >> + .read_io = hvmemul_read_io, >> + .write_io = hvmemul_write_io, >> + .read_cr = hvmemul_read_cr, >> + .write_cr = hvmemul_write_cr, >> + .read_msr = hvmemul_read_msr, >> + .write_msr = hvmemul_write_msr, >> + .wbinvd = hvmemul_wbinvd, >> + .cpuid = hvmemul_cpuid, >> + .inject_hw_exception = hvmemul_inject_hw_exception, >> + .inject_sw_interrupt = hvmemul_inject_sw_interrupt, > > Do you care about injecting exceptions (stack updates &c)? Yes, those should work. Thanks, Razvan Cojocaru _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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