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| author | Daniel Henrique Barboza <dbarboza@ventanamicro.com> | 2023-02-22 15:51:57 -0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2023-03-01 13:47:09 -0800 |
| commit | 5b17fefb90adcd79854858b2671106ad1035b391 (patch) | |
| tree | 0e015322c52b2783c9552c7032ba0e04b1013f14 /target | |
| parent | d4ea71170432fef9e8394ab33eac3cdc3a9540d3 (diff) | |
| download | qemu-5b17fefb90adcd79854858b2671106ad1035b391.zip qemu-5b17fefb90adcd79854858b2671106ad1035b391.tar.gz qemu-5b17fefb90adcd79854858b2671106ad1035b391.tar.bz2 | |
target/riscv: do not mask unsupported QEMU extensions in write_misa()
The masking done using env->misa_ext_mask already filters any extension
that QEMU doesn't support. If the hart supports the extension then QEMU
supports it as well.
If the masking done by env->misa_ext_mask is somehow letting unsupported
QEMU extensions pass by, misa_ext_mask itself needs to be fixed instead.
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Reviewed-by: Weiwei Li <liweiwei@iscas.ac.cn>
Reviewed-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Message-ID: <20230222185205.355361-3-dbarboza@ventanamicro.com>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Diffstat (limited to 'target')
| -rw-r--r-- | target/riscv/csr.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 1b0a0c1..e149b45 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -1356,9 +1356,6 @@ static RISCVException write_misa(CPURISCVState *env, int csrno, /* Mask extensions that are not supported by this hart */ val &= env->misa_ext_mask; - /* Mask extensions that are not supported by QEMU */ - val &= (RVI | RVE | RVM | RVA | RVF | RVD | RVC | RVS | RVU | RVV); - /* 'D' depends on 'F', so clear 'D' if 'F' is not present */ if ((val & RVD) && !(val & RVF)) { val &= ~RVD; |