[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PULL 02/59] target/riscv: do not mask unsupported QEMU extensions in wr
From: |
Palmer Dabbelt |
Subject: |
[PULL 02/59] target/riscv: do not mask unsupported QEMU extensions in write_misa() |
Date: |
Fri, 3 Mar 2023 00:36:43 -0800 |
From: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
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>
---
target/riscv/csr.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index 1b0a0c1693..e149b453da 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;
--
2.39.2
- [PULL 00/59] Fifth RISC-V PR for QEMU 8.0, Palmer Dabbelt, 2023/03/03
- [PULL 01/59] target/riscv: introduce riscv_cpu_cfg(), Palmer Dabbelt, 2023/03/03
- [PULL 05/59] target/riscv/cpu.c: error out if EPMP is enabled without PMP, Palmer Dabbelt, 2023/03/03
- [PULL 04/59] target/riscv: remove RISCV_FEATURE_DEBUG, Palmer Dabbelt, 2023/03/03
- [PULL 07/59] target/riscv: remove RISCV_FEATURE_PMP, Palmer Dabbelt, 2023/03/03
- [PULL 08/59] hw/riscv/virt.c: do not use RISCV_FEATURE_MMU in create_fdt_socket_cpus(), Palmer Dabbelt, 2023/03/03
- [PULL 12/59] target/riscv: Fix the relationship between Zhinxmin and Zhinx, Palmer Dabbelt, 2023/03/03
- [PULL 02/59] target/riscv: do not mask unsupported QEMU extensions in write_misa(),
Palmer Dabbelt <=
- [PULL 03/59] target/riscv: allow MISA writes as experimental, Palmer Dabbelt, 2023/03/03
- [PULL 06/59] target/riscv: remove RISCV_FEATURE_EPMP, Palmer Dabbelt, 2023/03/03
- [PULL 10/59] target/riscv/cpu: remove CPUArchState::features and friends, Palmer Dabbelt, 2023/03/03
- [PULL 09/59] target/riscv: remove RISCV_FEATURE_MMU, Palmer Dabbelt, 2023/03/03
- [PULL 14/59] target/riscv: Add cfg properties for Zv* extensions, Palmer Dabbelt, 2023/03/03
- [PULL 11/59] target/riscv: Fix the relationship between Zfhmin and Zfh, Palmer Dabbelt, 2023/03/03
- [PULL 15/59] target/riscv: Fix relationship between V, Zve*, F and D, Palmer Dabbelt, 2023/03/03
- [PULL 13/59] target/riscv: Simplify the check for Zfhmin and Zhinxmin, Palmer Dabbelt, 2023/03/03
- [PULL 18/59] target/riscv: Simplify check for Zve32f and Zve64f, Palmer Dabbelt, 2023/03/03
- [PULL 19/59] target/riscv: Replace check for F/D to Zve32f/Zve64d in trans_rvv.c.inc, Palmer Dabbelt, 2023/03/03