This series introduces initial support for the MIPS SIMD Architecture
(MSA) ASE introduced with MIPSr5. This support allows for MSA being
detected & enabled for tasks which use it, and for vector registers
(which are aliased with FP registers) to be context switched. MSA
implementations with vector register partitioning are not handled since
none currently exist, and a mechanism for exposing the vector registers
via ptrace remains to be added later.
The series applies atop the current mips-for-linux-next branch. An
earlier version of the first patch has been sent to the list before, but
is now included in this series to make its intent clearer.
Paul Burton (15):
mips: simplify FP context access
mips: update outdated comment
mips: move & rename fpu_emulator_{save,restore}_context
mips: don't require FPU on sigcontext setup/restore
mips: replace hardcoded 32 with NUM_FPU_REGS in ptrace
mips: clear upper bits of FP registers on emulator writes
mips: don't assume 64-bit FP registers for dump_{,task_}fpu
mips: don't assume 64-bit FP registers for FP regset
mips: don't assume 64-bit FP registers for context switch
mips: add MSA register definitions & access
mips: detect the MSA ASE
mips: basic MSA context switching support
mips: dumb MSA FP exception handler
mips: panic if vector register partitioning is implemented
mips: save/restore MSA context around signals
arch/mips/Kconfig | 20 ++
arch/mips/Makefile | 5 +
arch/mips/include/asm/asmmacro-32.h | 128 ++++++-------
arch/mips/include/asm/asmmacro.h | 319 +++++++++++++++++++++++++-------
arch/mips/include/asm/cpu-features.h | 6 +
arch/mips/include/asm/cpu-info.h | 1 +
arch/mips/include/asm/cpu.h | 1 +
arch/mips/include/asm/fpu.h | 2 +-
arch/mips/include/asm/mipsregs.h | 1 +
arch/mips/include/asm/msa.h | 199 ++++++++++++++++++++
arch/mips/include/asm/processor.h | 45 ++++-
arch/mips/include/asm/sigcontext.h | 2 +
arch/mips/include/asm/switch_to.h | 22 ++-
arch/mips/include/asm/thread_info.h | 4 +
arch/mips/include/uapi/asm/sigcontext.h | 8 +
arch/mips/kernel/asm-offsets.c | 69 +++++++
arch/mips/kernel/cpu-probe.c | 26 +++
arch/mips/kernel/genex.S | 2 +
arch/mips/kernel/proc.c | 1 +
arch/mips/kernel/process.c | 23 ++-
arch/mips/kernel/ptrace.c | 85 ++++++---
arch/mips/kernel/ptrace32.c | 25 +--
arch/mips/kernel/r4k_fpu.S | 213 +++++++++++++++++++++
arch/mips/kernel/r4k_switch.S | 58 ++++--
arch/mips/kernel/signal.c | 136 +++++++++++---
arch/mips/kernel/signal32.c | 134 ++++++++++++--
arch/mips/kernel/traps.c | 113 ++++++++++-
arch/mips/math-emu/cp1emu.c | 51 +++--
arch/mips/math-emu/kernel_linkage.c | 76 +-------
29 files changed, 1433 insertions(+), 342 deletions(-)
create mode 100644 arch/mips/include/asm/msa.h
--
1.8.5.3
