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Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit signal context

From Stas Sergeev <stsp@list.ru>
Newsgroups linux.kernel
Subject Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit signal context
Date 2015-10-18 15:40 +0200
Message-ID <qkWlQ-6D8-23@gated-at.bofh.it> (permalink)
References (5 earlier) <qjyEV-6jb-3@gated-at.bofh.it> <qjz7Y-6RL-19@gated-at.bofh.it> <qjzrj-7fk-3@gated-at.bofh.it> <qjBWa-2yn-17@gated-at.bofh.it> <qjC5Q-2Mx-13@gated-at.bofh.it>
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15.10.2015 00:41, Andy Lutomirski пишет:
>> If this my
>> understanding is correct and the flag is just an indication rather
>> than a requested action, perhaps the name should be different,
>> e.g. UC_SIG_FROM_32BIT or the like?
>> Anyway, this is minor. :)
>> I'll try to test the patch within a few days, thanks for you time!
> No problem.  Thanks for being willing to test!
Hello Andy, I am unlucky at testing this.
dosemu doesn't even start for me on the git kernels.
After a half day of debugging, it seems the kernel forgets
to fill in the "err" field in the sigcontext struct when
page fault occurs. That confuses the dosemu's instruction
decoder.
Does this ring any bells?
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Thread

[RFC 0/4] x86: sigcontext SS fixes, take 2 Andy Lutomirski <luto@kernel.org> - 2015-10-13 03:10 +0200
  [RFC 4/4] selftests/x86: Add tests for UC_SIGCONTEXT_SS and UC_STRICT_RESTORE_SS Andy Lutomirski <luto@kernel.org> - 2015-10-13 03:10 +0200
  [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit signal context Andy Lutomirski <luto@kernel.org> - 2015-10-13 03:10 +0200
    Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Stas Sergeev <stsp@list.ru> - 2015-10-13 18:10 +0200
      Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Ingo Molnar <mingo@kernel.org> - 2015-10-14 17:10 +0200
        Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Stas Sergeev <stsp@list.ru> - 2015-10-14 17:20 +0200
      Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Andy Lutomirski <luto@amacapital.net> - 2015-10-14 18:50 +0200
        Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Stas Sergeev <stsp@list.ru> - 2015-10-14 19:50 +0200
          Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Andy Lutomirski <luto@amacapital.net> - 2015-10-14 20:10 +0200
            Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Stas Sergeev <stsp@list.ru> - 2015-10-14 20:40 +0200
              Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Andy Lutomirski <luto@amacapital.net> - 2015-10-14 21:00 +0200
                Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Stas Sergeev <stsp@list.ru> - 2015-10-14 23:40 +0200
                Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Andy Lutomirski <luto@amacapital.net> - 2015-10-14 23:50 +0200
                Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Stas Sergeev <stsp@list.ru> - 2015-10-18 15:40 +0200
                Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Andy Lutomirski <luto@amacapital.net> - 2015-10-18 18:20 +0200
                Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Andy Lutomirski <luto@amacapital.net> - 2015-10-18 18:40 +0200
                Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Stas Sergeev <stsp@list.ru> - 2015-10-18 18:50 +0200
                Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Andy Lutomirski <luto@amacapital.net> - 2015-10-18 19:10 +0200
                Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Stas Sergeev <stsp@list.ru> - 2015-10-18 18:40 +0200
    Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Cyrill Gorcunov <gorcunov@gmail.com> - 2015-10-14 18:50 +0200
      Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Andy Lutomirski <luto@amacapital.net> - 2015-10-14 18:50 +0200
        Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Cyrill Gorcunov <gorcunov@gmail.com> - 2015-10-14 19:00 +0200
      Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Stas Sergeev <stsp@list.ru> - 2015-10-14 19:00 +0200
        Re: [RFC 3/4] x86/signal/64: Re-add support for SS in the 64-bit  signal context Cyrill Gorcunov <gorcunov@gmail.com> - 2015-10-14 19:10 +0200
  [RFC 2/4] x86/signal/64: Fix SS if needed when delivering a 64-bit signal Andy Lutomirski <luto@kernel.org> - 2015-10-13 03:10 +0200

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