[PATCH v6 09/12] target/riscv: Flush TLB when pmpaddr is updated

Weiwei Li posted 12 patches 2 years, 8 months ago
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>
[PATCH v6 09/12] target/riscv: Flush TLB when pmpaddr is updated
Posted by Weiwei Li 2 years, 8 months ago
TLB should be flushed not only for pmpcfg csr changes, but also for
pmpaddr csr changes.

Signed-off-by: Weiwei Li <liweiwei@iscas.ac.cn>
Signed-off-by: Junqiang Wang <wangjunqiang@iscas.ac.cn>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: LIU Zhiwei <zhiwei_liu@linux.alibaba.com>
---
 target/riscv/pmp.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c
index efe72afe29..70fb2327f7 100644
--- a/target/riscv/pmp.c
+++ b/target/riscv/pmp.c
@@ -531,6 +531,7 @@ void pmpaddr_csr_write(CPURISCVState *env, uint32_t addr_index,
             if (is_next_cfg_tor) {
                 pmp_update_rule_addr(env, addr_index + 1);
             }
+            tlb_flush(env_cpu(env));
         } else {
             qemu_log_mask(LOG_GUEST_ERROR,
                           "ignoring pmpaddr write - locked\n");
-- 
2.25.1