On 08/05/15 13:08, Jan Beulich wrote: > 1- or 2-byte operations never alter the high halves of registers. > > Signed-off-by: Jan Beulich <jbeul...@suse.com>
Reviewed-by: Andrew Cooper <andrew.coop...@citrix.com> > > --- a/xen/arch/x86/traps.c > +++ b/xen/arch/x86/traps.c > @@ -2234,7 +2234,7 @@ static int emulate_privileged_op(struct > if ( op_bytes == 4 ) > regs->eax = 0; > else > - regs->eax &= ~((1u << (op_bytes * 8)) - 1); > + regs->eax &= ~((1 << (op_bytes * 8)) - 1); > regs->eax |= guest_io_read(port, op_bytes, v, regs); > } > bpmatch = check_guest_io_breakpoint(v, port, op_bytes); > > > _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
