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X-Received-From: 2a00:1450:4864:20::136 X-Content-Filtered-By: Mailman/MimeDel 2.1.21 Subject: [Qemu-devel] [PATCH for 4.1] target/riscv: Only flush TLB if SATP.ASID changes X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Alistair Francis , Palmer Dabbelt , "open list:RISC-V" , Sagar Karandikar , Bastian Koppelmann Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" There is an analogous change for ARM here: https://patchwork.kernel.org/patch/10649857 --- target/riscv/csr.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 6083c782a1..1ec1222da1 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -732,7 +732,9 @@ static int write_satp(CPURISCVState *env, int csrno, target_ulong val) if (env->priv =3D=3D PRV_S && get_field(env->mstatus, MSTATUS_TVM)= ) { return -1; } else { - tlb_flush(CPU(riscv_env_get_cpu(env))); + if((val ^ env->satp) & SATP_ASID) { + tlb_flush(CPU(riscv_env_get_cpu(env))); + } env->satp =3D val; } } --=20 2.20.1