On Wed, Jan 29, 2014 at 12:34 PM, Arnd Bergmann <a...@arndb.de> wrote: > On Wednesday 29 January 2014 17:40:54 Wookey wrote: >> +++ Arnd Bergmann [2014-01-29 18:14 +0100]: >> > On Wednesday 29 January 2014 16:36:49 Wookey wrote: >> > > Running 32-bit binaries is quite seriously broken until this is fixed. I >> > > presume this currently isn't on anyone's list to fix? I'm not sure who's >> > > list it should go on. >> > >> > Are you running with 4KB or 64KB page size in the kernel? IIRC you >> > cannot really run 32-bit binaries with 64KB page size because of >> > related issues. >> >> I'm not sure. The kernel config has: >> CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y >> # CONFIG_ARM64_64K_PAGES is not set >> CONFIG_PAGEFLAGS_EXTENDED=y >> # CONFIG_TRANSPARENT_HUGEPAGE is not set >> >> Is that using 64K pages or not? > > This is 4K pages, so I was on the wrong track here. > >> Is there a dynamic switch I can twiddle or does it need a kernel rebuild? > > If you turn on CONFIG_ARM64_64K_PAGES, you probably won't be able to > load any 32-bit executables any more, or more will fail.
You definitely need 64K pages disabled and you also need CONFIG_COMPAT=y. FWIW, I have 64-bit QEMU system level emulation working, but 32-bit userspace is not working for me. Rob _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
