Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1354054

Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers

From Szabolcs Nagy <nsz@port70.net>
Newsgroups linux.kernel
Subject Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers
Date 2016-03-09 12:50 +0100
Message-ID <raKMP-7m0-45@gated-at.bofh.it> (permalink)
References <raB6O-IC-19@gated-at.bofh.it> <raI8i-5pu-11@gated-at.bofh.it> <raKD8-7hd-15@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw

* Szabolcs Nagy <nsz@port70.net> [2016-03-09 12:34:50 +0100]:
> * Ingo Molnar <mingo@kernel.org> [2016-03-09 09:56:31 +0100]:
> > Why is so much complexity added to avoid a ~3 instructions window where 
> > calcellation is tested? Cancellation at work atom boundaries is a fundamentally 
> > 'polling' model anyway, and signal delivery is asynchronous, with a fundamental 
> > IPI delay if it's cross-CPU.
> > 
> 
> to avoid the race when the thread is cancelled after the test but before
> the syscall see http://ewontfix.com/16/
> 
wrong link
http://ewontfix.com/2/

Back to linux.kernel | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

[RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers Andy Lutomirski <luto@kernel.org> - 2016-03-09 02:30 +0100
  Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers Ingo Molnar <mingo@kernel.org> - 2016-03-09 10:00 +0100
    Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Szabolcs Nagy <nsz@port70.net> - 2016-03-09 12:40 +0100
      Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Szabolcs Nagy <nsz@port70.net> - 2016-03-09 12:50 +0100
      Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers Linus Torvalds <torvalds@linux-foundation.org> - 2016-03-09 20:50 +0100
        Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers Andy Lutomirski <luto@amacapital.net> - 2016-03-09 22:00 +0100
          Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers Linus Torvalds <torvalds@linux-foundation.org> - 2016-03-09 22:30 +0100
          Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Ingo Molnar <mingo@kernel.org> - 2016-03-10 12:00 +0100
        Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Rich Felker <dalias@libc.org> - 2016-03-10 04:40 +0100
          Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Ingo Molnar <mingo@kernel.org> - 2016-03-10 12:20 +0100
            Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Rich Felker <dalias@libc.org> - 2016-03-10 17:50 +0100
              Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Ingo Molnar <mingo@kernel.org> - 2016-03-10 19:10 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Rich Felker <dalias@libc.org> - 2016-03-11 00:30 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Szabolcs Nagy <nsz@port70.net> - 2016-03-11 01:20 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Rich Felker <dalias@libc.org> - 2016-03-11 01:50 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers Andy Lutomirski <luto@amacapital.net> - 2016-03-11 02:20 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Szabolcs Nagy <nsz@port70.net> - 2016-03-11 02:40 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Rich Felker <dalias@libc.org> - 2016-03-11 03:00 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Szabolcs Nagy <nsz@port70.net> - 2016-03-11 03:00 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Ingo Molnar <mingo@kernel.org> - 2016-03-11 10:40 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Szabolcs Nagy <nsz@port70.net> - 2016-03-11 12:40 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers Linus Torvalds <torvalds@linux-foundation.org> - 2016-03-11 20:30 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers Andy Lutomirski <luto@amacapital.net> - 2016-03-11 20:40 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers Linus Torvalds <torvalds@linux-foundation.org> - 2016-03-11 20:40 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers Linus Torvalds <torvalds@linux-foundation.org> - 2016-03-11 20:50 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Ingo Molnar <mingo@kernel.org> - 2016-03-12 18:10 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Rich Felker <dalias@libc.org> - 2016-03-12 19:20 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Ingo Molnar <mingo@kernel.org> - 2016-03-12 18:10 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Rich Felker <dalias@libc.org> - 2016-03-12 19:10 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Ingo Molnar <mingo@kernel.org> - 2016-03-12 19:50 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Rich Felker <dalias@libc.org> - 2016-03-12 20:10 +0100
                Re: [musl] Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation  helpers Ingo Molnar <mingo@kernel.org> - 2016-03-12 18:10 +0100
  Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers Andy Lutomirski <luto@amacapital.net> - 2016-03-09 19:00 +0100
    Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers Andy Lutomirski <luto@amacapital.net> - 2016-03-09 22:30 +0100
      Re: [RFC PATCH] x86/vdso/32: Add AT_SYSINFO cancellation helpers Andy Lutomirski <luto@amacapital.net> - 2016-03-12 19:20 +0100

csiph-web