On 17 January 2014 16:07, Will Deacon <[email protected]> wrote: > Hi Ard, > > On Fri, Jan 17, 2014 at 09:23:07AM +0000, Ard Biesheuvel wrote: >> This enables AT_HWCAP2 for ARM. The generic support for this >> new ELF auxv entry was added in commit 2171364d1a9 (powerpc: >> Add HWCAP2 aux entry) > > Does this require a corresponding change in libc so that the entry is > actually used by the dynamic linker? >
The auxv entry itself is already wired up [this includes getauxval()] https://sourceware.org/git/?p=glibc.git;a=commit;h=1ae8bfe07c1a The only thing that is lacking is a way to hook up ifunc relocation, as the current prototype passes a single 32-bit quantity. So either we change the prototype to (hwcap, hwcap2) or we need to rely on getauxval() in ifunc selectors if they need to inspect hwcap2 -- Ard. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
