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Mon, 13 May 2024 16:18:32 -0700 (PDT) X-Google-Smtp-Source: AGHT+IE5D72RC4LYRTNo2hkTuLtCqE64H9MkykuNQ8KmfYMOGK2wgXqYoc36FZMooj1/RkMQiX2r6Q== X-Received: by 2002:a05:6808:487:b0:3c9:6a55:5f1a with SMTP id 5614622812f47-3c9971dcf6cmr15061001b6e.49.1715642311411; Mon, 13 May 2024 16:18:31 -0700 (PDT) Received: from emerald.lyude.net ([2600:4040:5c6c:a300::feb]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-6a15f1d7068sm47662336d6.112.2024.05.13.16.18.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 13 May 2024 16:18:30 -0700 (PDT) Message-ID: Subject: Re: Early boot regression from f0551af0213 ("x86/topology: Ignore non-present APIC IDs in a present package") From: Lyude Paul To: Thomas Gleixner , "Linux regression tracking (Thorsten Leemhuis)" Cc: x86@kernel.org, linux-kernel@vger.kernel.org, Mario Limonciello , Borislav Petkov , Linux kernel regressions list Date: Mon, 13 May 2024 19:18:29 -0400 In-Reply-To: <87jzjxn6s5.ffs@tglx> References: <3d77cb89857ee43a9c31249f4eab7196013bc4b4.camel@redhat.com> <20240418082703.GCZiDZVyra7qOQbyqn@fat_crate.local> <87plumxz4x.ffs@tglx> <87le59vw1y.ffs@tglx> <3a0afe545747e5314a9cb6bbaa9ce90b259ddfac.camel@redhat.com> <87edautcmz.ffs@tglx> <3b1d16e357c1f9badeef405366492f05af26c085.camel@redhat.com> <878r11t8zu.ffs@tglx> <016902d9-3858-4c65-b3ec-f7a5103af63c@amd.com> <51d0dff8-2888-463c-95ab-71b491f12a8f@leemhuis.info> <877cg4ppd5.ffs@tglx> <87jzjxn6s5.ffs@tglx> Organization: Red Hat Inc. Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.52.1 (3.52.1-1.fc40) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Mon, 2024-05-13 at 16:08 +0200, Thomas Gleixner wrote: > On Wed, May 08 2024 at 19:21, Lyude Paul wrote: > > Regarding the test results - I tried possible_cpus all the way up to 17 > > and nothing got the machine to boot. However, possible_cpus=3D8 > > intremap=3Doff did get the machine to boot successfully >=20 > Oh. That's interesting. >=20 > Does v6.9 (released yesterday) boot with just 'intremap=3Doff' too? Yes - it still boots. As well I finally got the serial console adapter in, = but I don't see any additional output: [ 0.146896] printk: legacy console [tty0] enabled [ 0.147433] printk: legacy console [ttyS0] enabled [ 1.951453] ACPI: Core revision 20230628 [ 1.955466] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, = max_idle_ns: 133484873504 ns [ 1.964698] APIC: Switch to symmetric I/O mode setup [ 1.970973] AMD-Vi: Using global IVHD EFR:0xf77ef22294ada, EFR2:0x0 [ 1.978491] ..TIMER: vector=3D0x30 apic1=3D0 pin1=3D2 apic2=3D-1 pin2=3D= -1 [ 1.996945] Kernel panic - not syncing: timer doesn't work through Inter= rupt-remapped IO-APIC [ 2.005376] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.9.0Lyude-Test+ #= 7 [ 2.012248] Hardware name: MSI MS-7A39/A320M GAMING PRO (MS-7A39), BIOS = 1.I0 01/22/2019 [ 2.020160] Call Trace: [ 2.022584] [ 2.024666] dump_stack_lvl+0x5d/0x80 [ 2.028499] panic+0x118/0x2c8 [ 2.031522] ? timer_irq_works+0x54/0xf0 [ 2.035408] panic_if_irq_remap.cold+0x5/0x9 [ 2.039631] setup_IO_APIC+0x398/0x860 [ 2.043475] ? _raw_spin_unlock_irqrestore+0x1d/0x40 [ 2.048393] ? clear_IO_APIC_pin+0x125/0x1e0 [ 2.052617] apic_intr_mode_init+0xcc/0xe0 [ 2.056672] x86_late_time_init+0x24/0x40 [ 2.060820] start_kernel+0x8be/0x960 [ 2.064446] x86_64_start_reservations+0x24/0x30 [ 2.069015] x86_64_start_kernel+0x95/0xa0 [ 2.073069] common_startup_64+0x13e/0x141 [ 2.077280] [ 2.079447] ---[ end Kernel panic - not syncing: timer doesn't work thro= ugh Interrupt-remapped IO-APIC ]--- >=20 > Thanks, >=20 > tglx >=20 --=20 Cheers, Lyude Paul (she/her) Software Engineer at Red Hat