This series provides the final bits of support for MSA as far as userland that isn't a debugger goes. In order to preserve backwards compatibility it saves the extended vector context after the end of the sigframe or ucontext, at a fixed offset. A bit set in sigcontext's sc_used_math field indicates to userland (and to the kernel on sigreturn) that the extended context is present. With these final bits in, the presence of MSA support is indicated via a HWCAP bit that userland may check for. Paul Burton (16): MIPS: remove outdated comments in sigcontext.h MIPS: simplify EVA FP context handling code MIPS: add offsets to sigcontext FP fields to struct mips_abi MIPS: use struct mips_abi offsets to save FP context MIPS: move FP usage checks into protected_{save,restore}_fp_context MIPS: skip odd double FP registers when copying FP32 sigcontext MIPS: use common FP sigcontext code for O32 compat MIPS: remove unused {get,put}_sigset functions MIPS: indicate FP mode in sigcontext sc_used_math MIPS: add definitions for extended context MIPS: save MSA extended context around signals MIPS: AT_HWCAP aux vector infrastructure MIPS: advertise MIPSr6 via HWCAP when appropriate MIPS: advertise MSA support via HWCAP when present MIPS: require O32 FP64 support for MIPS64 with O32 compat MIPS: drop EXPERIMENTAL tag from O32+FP64 & MSA arch/mips/Kconfig | 5 +- arch/mips/include/asm/Kbuild | 1 - arch/mips/include/asm/abi.h | 4 + arch/mips/include/asm/elf.h | 4 +- arch/mips/include/asm/signal.h | 3 + arch/mips/include/uapi/asm/hwcap.h | 8 + arch/mips/include/uapi/asm/sigcontext.h | 19 +- arch/mips/include/uapi/asm/ucontext.h | 65 +++++ arch/mips/kernel/asm-offsets.c | 11 - arch/mips/kernel/cpu-probe.c | 7 + arch/mips/kernel/r4k_fpu.S | 372 ++++++++++++++------------- arch/mips/kernel/signal-common.h | 9 + arch/mips/kernel/signal.c | 429 +++++++++++++++++++++++++------- arch/mips/kernel/signal32.c | 207 +-------------- arch/mips/kernel/signal_n32.c | 6 +- 15 files changed, 660 insertions(+), 490 deletions(-) create mode 100644 arch/mips/include/uapi/asm/hwcap.h create mode 100644 arch/mips/include/uapi/asm/ucontext.h -- 2.4.6