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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists1p.gnu.org; Received-SPF: pass client-ip=205.220.180.131; envelope-from=daniel.barboza@oss.qualcomm.com; helo=mx0b-0031df01.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @qualcomm.com) X-ZM-MESSAGEID: 1779917501705158500 Content-Type: text/plain; charset="utf-8" We did a recent change to disable svpbmt if satp_mode < sv39 that was discovered via a gitlab report. This time we don't have an opened bug but the problem is similar: RISC-V privileged ISA, chapter '"Svnapot" Extension for NAPOT Translation Contiguity, Version 1.0' states: "The Svnapot extension depends on the Sv39 extension." Do the same thing with svnapot, including the user warning in case we try to enable it without the required satp_mode: $ ./build/qemu-system-riscv64 -M virt,dumpdtb=3Dfdt.dtb \ -cpu max,sv39=3Doff,sv48=3Doff,sv57=3Doff,sv64=3Doff,svnapot=3Don qemu-system-riscv64: warning: svnapot requires at least satp sv39, current = satp mode: none Signed-off-by: Daniel Henrique Barboza Reviewed-by: Alistair Francis --- target/riscv/tcg/tcg-cpu.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/target/riscv/tcg/tcg-cpu.c b/target/riscv/tcg/tcg-cpu.c index f8b2f04a94..c3006bccb7 100644 --- a/target/riscv/tcg/tcg-cpu.c +++ b/target/riscv/tcg/tcg-cpu.c @@ -847,6 +847,16 @@ void riscv_cpu_validate_set_extensions(RISCVCPU *cpu, = Error **errp) riscv_cpu_is_32bit(cpu))); } } + + if (cpu->cfg.ext_svnapot && cpu->cfg.max_satp_mode < VM_1_10_SV39) { + cpu->cfg.ext_svnapot =3D false; + if (cpu_cfg_ext_is_user_set(CPU_CFG_OFFSET(ext_svnapot))) { + warn_report("svnapot requires at least satp sv39, " + "current satp mode: %s", + satp_mode_str(cpu->cfg.max_satp_mode, + riscv_cpu_is_32bit(cpu))); + } + } #endif /* * Disable isa extensions based on priv spec after we --=20 2.43.0