We first add a framework for vendor CSRs in patch 1. After that we add one thead-c906 CSR mxstatus, which is used for mmu extension xtheadmaee.
This patch set fix the regression on kernel pointed by Björn Töpel in https://www.mail-archive.com/qemu-devel@nongnu.org/msg1018232.html. LIU Zhiwei (2): target/riscv: Register vendors CSR target/riscv: Support xtheadmaee for thead-c906 target/riscv/cpu.c | 9 ++++++ target/riscv/cpu.h | 9 ++++++ target/riscv/cpu_bits.h | 6 ++++ target/riscv/cpu_cfg.h | 4 ++- target/riscv/cpu_helper.c | 25 ++++++++------- target/riscv/meson.build | 1 + target/riscv/tcg/tcg-cpu.c | 25 ++++++++++++++- target/riscv/tcg/tcg-cpu.h | 1 + target/riscv/xthead_csr.c | 63 ++++++++++++++++++++++++++++++++++++++ 9 files changed, 130 insertions(+), 13 deletions(-) create mode 100644 target/riscv/xthead_csr.c -- 2.25.1
