On Tue, Jan 6, 2015 at 10:30 AM, Dave Hansen <dave.han...@linux.intel.com> wrote: > On 01/06/2015 10:06 AM, Andy Lutomirski wrote: >> On Tue, Jan 6, 2015 at 9:48 AM, Dave Hansen <dave.han...@linux.intel.com> >> wrote: >>> On 01/05/2015 09:59 PM, Andy Lutomirski wrote: >>>> But I decided to check whether libmpx links against glibc, and I can't >>>> find sources for it at all. Do they exist? Is there any code with >>>> source available that invokes this prctl? >>>> >>>> If not, I personally have very little sympathy for the argument that a >>>> binary buried in the depths of the Intel SDE would need to change if >>>> we switched to using arch_prctl. And I think that it should issue the >>>> syscall itself without using glibc, in which case the syscall wrapper >>>> issue is moot. >>> >>> Andy, as I mentioned previously, there is code in a GCC branch that uses >>> the existing prctl(). It's also been posted for review to one of the >>> GCC mailing lists. I've been told that it will be in gcc 5.0. >> >> Can you point me to it? I found the code generation stuff in the gcc >> branch, but I couldn't find the runtime. > > cc'ing Ilya who is working on the gcc parts... > > Ilya, is the MPX runtime that uses the prctl() calls available somewhere > publicly that it can be grabbed? > > I couldn't find it in GCC SVN anywhere. > >>> The Intel SDE does not use the prctl() in any way that I know of. >> >> I found a couple references suggesting that libmpx lived in the SDE. >> For example: >> >> https://software.intel.com/en-us/articles/using-intel-mpx-with-the-intel-software-development-emulator > > Andy, I think you're mistaken. The SDE allows you to run MPX code on a > system without MPX support in hardware. It does not, itself, provide > MPX code. The references you see there are to a runtime library that > you obtain separately from the SDE. You run the library _under_ the SDE. >
I misread this: There are two shared objects in the runtime kit available on the SDE page. The runtime seems to be here: https://software.intel.com/protected-download/267266/144917 but I'm not going to accept the EULA. --Andy -- 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/
