On 06/14/2016 02:52 AM, Peter Maydell wrote: > For the user-only targets, we need to know something about the host CPU > architecture even if we are using the TCI interpreter rather than TCG. > (In particular user-exec.c has code for handling signals that needs > to know about that host's context structures.) > > Specifically forbid building the user-only targets on unknown CPU > architectures, rather than allowing them to configure but then fail > when building user-exec.c. > > This change drops supports for two configurations which were theoretically > possible before: > * linux-user targets on M68K hosts using TCI > * linux-user targets on HPPA hosts using TCI > > We don't think anybody is actually trying to use these in practice, though: > * interpreted TCG on a slow host CPU would be unusably slow > * the m68k user-exec.c support is missing is_write detection so guest > code which writes to the same page it is executing from was broken > (will include any guest program using signals) > * HPPA TCG backend support was dropped two and a half years ago > with no complaints > > Signed-off-by: Peter Maydell <peter.mayd...@linaro.org> > --- > configure | 7 +++++++ > 1 file changed, 7 insertions(+)
Reviewed-by: Richard Henderson <r...@twiddle.net> r~
