[PATCH 00/17] Prctl to enable vector commands, previous vector patches rebased

Chris Stillson
2022-09-21T21:01:53Z

This patch adds a prctl to enable, disable, or query whether vectors are enabled or not. This is to allow a process to "opt out" of the overhead incurred by using vectors. Because this is build on top of an existing set of patches to work with vectors, they have been rebased to Linux 6.0-rc1.

Chris Stillson (1):
riscv: prctl to enable vector commands

Greentime Hu (9):
riscv: Add new csr defines related to vector extension
riscv: Add has_vector/riscv_vsize to save vector features.
riscv: Add vector struct and assembler definitions
riscv: Add task switch support for vector
riscv: Add ptrace vector support
riscv: Add sigcontext save/restore for vector
riscv: Add support for kernel mode vector
riscv: Add vector extension XOR implementation
riscv: Fix a kernel panic issue if $s2 is set to a specific value
before entering Linux

Guo Ren (4):
riscv: Rename __switch_to_aux -> fpu
riscv: Extending cpufeature.c to detect V-extension
riscv: Add vector feature to compile
riscv: Reset vector register

Vincent Chen (3):
riscv: signal: Report signal frame size to userspace via auxv
riscv: Add V extension to KVM ISA allow list
riscv: KVM: Add vector lazy save/restore support

arch/riscv/Kconfig | 15 +-
arch/riscv/Makefile | 1 +
arch/riscv/configs/defconfig | 6 +
arch/riscv/include/asm/csr.h | 16 ++-
arch/riscv/include/asm/elf.h | 47 +++---
arch/riscv/include/asm/hwcap.h | 1 +
arch/riscv/include/asm/kvm_host.h | 2 +
arch/riscv/include/asm/kvm_vcpu_vector.h | 65 +++++++++
arch/riscv/include/asm/processor.h | 9 ++
arch/riscv/include/asm/switch_to.h | 83 ++++++++++-
arch/riscv/include/asm/vector.h | 17 +++
arch/riscv/include/asm/xor.h | 82 +++++++++++
arch/riscv/include/uapi/asm/auxvec.h | 1 +
arch/riscv/include/uapi/asm/hwcap.h | 1 +
arch/riscv/include/uapi/asm/kvm.h | 7 +
arch/riscv/include/uapi/asm/ptrace.h | 23 +++
arch/riscv/include/uapi/asm/sigcontext.h | 24 ++++
arch/riscv/kernel/Makefile | 2 +
arch/riscv/kernel/asm-offsets.c | 15 ++
arch/riscv/kernel/cpufeature.c | 21 +++
arch/riscv/kernel/entry.S | 6 +-
arch/riscv/kernel/head.S | 37 ++++-
arch/riscv/kernel/kernel_mode_vector.c | 132 +++++++++++++++++
arch/riscv/kernel/process.c | 61 ++++++++
arch/riscv/kernel/ptrace.c | 71 ++++++++++
arch/riscv/kernel/riscv_ksyms.c | 6 +
arch/riscv/kernel/signal.c | 173 ++++++++++++++++++++++-
arch/riscv/kernel/vector.S | 102 +++++++++++++
arch/riscv/kvm/Makefile | 1 +
arch/riscv/kvm/vcpu.c | 32 +++++
arch/riscv/kvm/vcpu_switch.S | 69 +++++++++
arch/riscv/kvm/vcpu_vector.c | 173 +++++++++++++++++++++++
arch/riscv/lib/Makefile | 1 +
arch/riscv/lib/xor.S | 81 +++++++++++
include/uapi/linux/elf.h | 1 +
include/uapi/linux/prctl.h | 6 +
kernel/sys.c | 7 +
37 files changed, 1355 insertions(+), 42 deletions(-)
create mode 100644 arch/riscv/include/asm/kvm_vcpu_vector.h
create mode 100644 arch/riscv/include/asm/vector.h
create mode 100644 arch/riscv/include/asm/xor.h
create mode 100644 arch/riscv/kernel/kernel_mode_vector.c
create mode 100644 arch/riscv/kernel/vector.S
create mode 100644 arch/riscv/kvm/vcpu_vector.c
create mode 100644 arch/riscv/lib/xor.S

--
2.25.1