Re: [PATCH v3] powerpc/64: Option to use ELF V2 ABI for big-endian kernels

2020-05-20 Thread Nicholas Piggin
Excerpts from Segher Boessenkool's message of May 18, 2020 10:19 pm: > Hi! > > On Mon, May 18, 2020 at 04:35:22PM +1000, Michael Ellerman wrote: >> Nicholas Piggin writes: >> > Provide an option to build big-endian kernels using the ELF V2 ABI. This >> > works >> > on GCC and clang (since about

Re: [PATCH v3] powerpc/64: Option to use ELF V2 ABI for big-endian kernels

2020-05-18 Thread Segher Boessenkool
Hi! On Mon, May 18, 2020 at 04:35:22PM +1000, Michael Ellerman wrote: > Nicholas Piggin writes: > > Provide an option to build big-endian kernels using the ELF V2 ABI. This > > works > > on GCC and clang (since about 2014). it is is not officially supported by > > the > > GNU toolchain, but it

Re: [PATCH v3] powerpc/64: Option to use ELF V2 ABI for big-endian kernels

2020-05-17 Thread Michael Ellerman
Nicholas Piggin writes: > Provide an option to build big-endian kernels using the ELF V2 ABI. This works > on GCC and clang (since about 2014). it is is not officially supported by the > GNU toolchain, but it can give big-endian kernels some useful advantages of > the V2 ABI (e.g., less stack usa