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envelope-from=prvs=1041ecfe3=alistair.francis@opensource.wdc.com; helo=esa2.hgst.iphmx.com X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Atish Patra RISC-V privileged specification v1.12 introduced a mconfigptr which will hold the physical address of a configuration data structure. As Qemu doesn't have a configuration data structure, is read as zero which is valid as per the priv spec. Reviewed-by: Alistair Francis Signed-off-by: Atish Patra Message-Id: <20220303185440.512391-5-atishp@rivosinc.com> Signed-off-by: Alistair Francis --- target/riscv/cpu_bits.h | 1 + target/riscv/csr.c | 2 ++ 2 files changed, 3 insertions(+) diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index 0fe01d7da5..48d92a81c3 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -148,6 +148,7 @@ #define CSR_MARCHID 0xf12 #define CSR_MIMPID 0xf13 #define CSR_MHARTID 0xf14 +#define CSR_MCONFIGPTR 0xf15 =20 /* Machine Trap Setup */ #define CSR_MSTATUS 0x300 diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 1400027158..6590cc8aa7 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -3110,6 +3110,8 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] =3D { [CSR_MIMPID] =3D { "mimpid", any, read_zero }, [CSR_MHARTID] =3D { "mhartid", any, read_mhartid }, =20 + [CSR_MCONFIGPTR] =3D { "mconfigptr", any, read_zero, + .min_priv_ver =3D PRIV_VERSION_1= _12_0 }, /* Machine Trap Setup */ [CSR_MSTATUS] =3D { "mstatus", any, read_mstatus, write= _mstatus, NULL, read_mstatus_i128 = }, --=20 2.35.1