26.10.2015 04:25, Andy Lutomirski пишет: > This is take 2 at fixing x86 64-bit signals wrt SS. After a lot of > thought, this is not controlled by any flags -- I would much prefer > to avoid opt-in behavior. Instead, it just tries hard to avoid > triggering the cases that break DOSEMU. > > Stas, this now seems to pass the test you sent me. It works with > stock dosemu2 (I haven't tested classic dosemu because I can't get it > to work regardless). I'll test it myself then. But this will have to wait till a week-end I am afraid. In a mean time you can test vm86() - last time I tried, I got oops and hard lockup.
> It also works with a patched dosemu2 that bypasses > the userspace trampoline: > > https://github.com/amluto/dosemu2/commit/571b4d08dc885b7a133e444a2ad23e0d21366206 > > With this applied, all of the x86 selftests pass on x86_64. That > wasn't the case before -- ldt_gdt_64 was broken. > > This is a bit risky, and another option would be to do nothing at > all. Then we'd disable the problematic self-tests (sigh), and No, another option is a new SA_ flag. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/