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Mon, 28 Apr 2025 00:34:47 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEsGwq+yLShN/RkC60H2fSjCcnflEJXOa5pd07yiFstPDm8dXEgKVAFVT8kHx7zlsv8FhAn8A== X-Received: by 2002:a05:6000:1787:b0:3a0:7fcf:1f41 with SMTP id ffacd0b85a97d-3a07fcf1facmr4419510f8f.47.1745825686870; Mon, 28 Apr 2025 00:34:46 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: alistair.francis@wdc.com, dbarboza@ventanamicro.com Subject: [PATCH 01/26] hw/riscv: acpi: only create RHCT MMU entry for supported types Date: Mon, 28 Apr 2025 09:34:16 +0200 Message-ID: <20250428073442.315770-2-pbonzini@redhat.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250428073442.315770-1-pbonzini@redhat.com> References: <20250428073442.315770-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -35 X-Spam_score: -3.6 X-Spam_bar: --- X-Spam_report: (-3.6 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.492, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=-1, RCVD_IN_MSPIKE_WL=-0.01, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, 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: 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 @redhat.com) X-ZM-MESSAGEID: 1745825748759019100 Content-Type: text/plain; charset="utf-8" Do not create the RHCT MMU type entry for RV32 CPUs, since it only has definitions for SV39/SV48/SV57. Likewise, check that satp_mode_max_from_map() will actually return a valid value, skipping the MMU type entry if all MMU types were disabled on the command line. Acked-by: Alistair Francis Signed-off-by: Paolo Bonzini --- hw/riscv/virt-acpi-build.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/hw/riscv/virt-acpi-build.c b/hw/riscv/virt-acpi-build.c index 1ad68005085..2b374ebacbf 100644 --- a/hw/riscv/virt-acpi-build.c +++ b/hw/riscv/virt-acpi-build.c @@ -262,6 +262,7 @@ static void build_rhct(GArray *table_data, RISCVCPU *cpu =3D &s->soc[0].harts[0]; uint32_t mmu_offset =3D 0; uint8_t satp_mode_max; + bool rv32 =3D riscv_cpu_is_32bit(cpu); g_autofree char *isa =3D NULL; =20 AcpiTable table =3D { .sig =3D "RHCT", .rev =3D 1, .oem_id =3D s->oem_= id, @@ -281,7 +282,8 @@ static void build_rhct(GArray *table_data, num_rhct_nodes++; } =20 - if (cpu->cfg.satp_mode.supported !=3D 0) { + if (!rv32 && cpu->cfg.satp_mode.supported !=3D 0 && + (cpu->cfg.satp_mode.map & ~(1 << VM_1_10_MBARE))) { num_rhct_nodes++; } =20 @@ -341,7 +343,8 @@ static void build_rhct(GArray *table_data, } =20 /* MMU node structure */ - if (cpu->cfg.satp_mode.supported !=3D 0) { + if (!rv32 && cpu->cfg.satp_mode.supported !=3D 0 && + (cpu->cfg.satp_mode.map & ~(1 << VM_1_10_MBARE))) { satp_mode_max =3D satp_mode_max_from_map(cpu->cfg.satp_mode.map); mmu_offset =3D table_data->len - table.table_offset; build_append_int_noprefix(table_data, 2, 2); /* Type */ @@ -356,7 +359,7 @@ static void build_rhct(GArray *table_data, } else if (satp_mode_max =3D=3D VM_1_10_SV39) { build_append_int_noprefix(table_data, 0, 1); /* Sv39 */ } else { - assert(1); + g_assert_not_reached(); } } =20 --=20 2.49.0