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>
This commit is contained in:
parent
d4ea711704
commit
5b17fefb90
|
@ -1356,9 +1356,6 @@ static RISCVException write_misa(CPURISCVState *env, int csrno,
|
||||||
/* Mask extensions that are not supported by this hart */
|
/* Mask extensions that are not supported by this hart */
|
||||||
val &= env->misa_ext_mask;
|
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 */
|
/* 'D' depends on 'F', so clear 'D' if 'F' is not present */
|
||||||
if ((val & RVD) && !(val & RVF)) {
|
if ((val & RVD) && !(val & RVF)) {
|
||||||
val &= ~RVD;
|
val &= ~RVD;
|
||||||
|
|
Loading…
Reference in New Issue