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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: none client-ip=40.107.237.85; envelope-from=Babu.Moger@amd.com; helo=NAM12-BN8-obe.outbound.protection.outlook.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/21 19:02:33 X-ACL-Warn: Detected OS = Windows NT kernel [generic] [fuzzy] X-Spam_score_int: -8 X-Spam_score: -0.9 X-Spam_bar: / X-Spam_report: (-0.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, FORGED_SPF_HELO=1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_NONE=0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: pass (identity @amdcloud.onmicrosoft.com) With x2apic enabled, configurations can have more that 255 cores. Noticed the device add test is hitting an assert when during cpu hotplug with core_id > 255. This is due to assert check in the CPUID 0x8000001E. Remove the assert check and fix the problem. Fixes the bug: Link: https://bugzilla.redhat.com/show_bug.cgi?id=3D1834200 Signed-off-by: Babu Moger --- v2: Resubmitting an old patch which was lost in the mix. Just rebased on the latest tree. v1: https://lore.kernel.org/qemu-devel/159257395689.52908.4409314503988289481= .stgit@naples-babu.amd.com/ target/i386/cpu.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/target/i386/cpu.c b/target/i386/cpu.c index 1c58f764dc..4f1d62c838 100644 --- a/target/i386/cpu.c +++ b/target/i386/cpu.c @@ -5912,9 +5912,14 @@ void cpu_x86_cpuid(CPUX86State *env, uint32_t index,= uint32_t count, } break; case 0x8000001E: - assert(cpu->core_id <=3D 255); - encode_topo_cpuid8000001e(cpu, &topo_info, - eax, ebx, ecx, edx); + if (cpu->core_id <=3D 255) { + encode_topo_cpuid8000001e(cpu, &topo_info, eax, ebx, ecx, edx); + } else { + *eax =3D 0; + *ebx =3D 0; + *ecx =3D 0; + *edx =3D 0; + } break; case 0xC0000000: *eax =3D env->cpuid_xlevel2;