[v5] target/riscv: reduce MSTATUS_SUM overhead

[PATCH v5 0/2] target/riscv: reduce MSTATUS_SUM overhead

Fei Wu posted 2 patches 1 year, 1 month ago

Diff against v4
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git fetch https://github.com/patchew-project/qemu tags/patchew/20230324054154.414846-1-fei2.wu@intel.com

Maintainers: Palmer Dabbelt <palmer@dabbelt.com>, Alistair Francis <alistair.francis@wdc.com>, Bin Meng <bin.meng@windriver.com>, Weiwei Li <liweiwei@iscas.ac.cn>, Daniel Henrique Barboza <dbarboza@ventanamicro.com>, Liu Zhiwei <zhiwei_liu@linux.alibaba.com>, Christoph Muellner <christoph.muellner@vrull.eu>

target/riscv/cpu.h                            |  3 +--
target/riscv/cpu_helper.c                     | 21 ++++++++++++++++---
target/riscv/csr.c                            |  3 +--
.../riscv/insn_trans/trans_privileged.c.inc   |  2 +-
target/riscv/insn_trans/trans_rvh.c.inc       |  4 ++--
target/riscv/insn_trans/trans_xthead.c.inc    |  7 +------
target/riscv/internals.h                      | 14 +++++++++++++
target/riscv/op_helper.c                      |  5 +++--
target/riscv/translate.c                      |  3 +++
9 files changed, 44 insertions(+), 18 deletions(-)

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[PATCH v5 0/2] target/riscv: reduce MSTATUS_SUM overhead

Posted by Fei Wu 1 year, 1 month ago

v4 -> v5:
* add priv to tb_flags

v3 -> v4:
* seperate priv from mmu_idx
* use index 2 for S+SUM mmu_idx
* no tlb_flush for MPRV / MPP changes


Fei Wu (2):
  target/riscv: separate priv from mmu_idx
  target/riscv: reduce overhead of MSTATUS_SUM change

 target/riscv/cpu.h                            |  3 +--
 target/riscv/cpu_helper.c                     | 21 ++++++++++++++++---
 target/riscv/csr.c                            |  3 +--
 .../riscv/insn_trans/trans_privileged.c.inc   |  2 +-
 target/riscv/insn_trans/trans_rvh.c.inc       |  4 ++--
 target/riscv/insn_trans/trans_xthead.c.inc    |  7 +------
 target/riscv/internals.h                      | 14 +++++++++++++
 target/riscv/op_helper.c                      |  5 +++--
 target/riscv/translate.c                      |  3 +++
 9 files changed, 44 insertions(+), 18 deletions(-)

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2.25.1