Jan Kiszka wrote: > Avi Kivity wrote: > >> Jan Kiszka wrote: >> >>> Hi, >>> >>> running some oldish 286 protected mode demo in kvm, I came across this >>> bug of kvm-52: >>> >>> unhandled vm exit: 0x80000021 vcpu_id 0 >>> ds 0000 (00100000/0000ffff p 1 dpl 3 db 0 s 1 type 3 l 0 g 0 avl 0) >>> >>> >>> >> ds.base must equal ds.sel<<4 when entering real-mode on Intel. See >> fix_rmode_seg() in vmx.c which clearly doesn't handle cases where >> ds.base >= 0x100000. You might try forcing bits 20+ of ds.base to zero >> in there. This may fix the problem or move it elsewhere. >> >> > > Yeah, this actually fixed my test case: > > Ensure that segment.base == segment.selector << 4 when entering the real > mode on Intel so that the CPU will not bark at us. > >
Applied (after de-optimizing), thanks. -- error compiling committee.c: too many arguments to function ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
