From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:46734) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gOQ7z-0003gB-EG for qemu-devel@nongnu.org; Sun, 18 Nov 2018 11:40:56 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gOQ7w-0006CZ-5n for qemu-devel@nongnu.org; Sun, 18 Nov 2018 11:40:55 -0500 Received: from dschgrazlin2.univ.trieste.it ([140.105.55.81]:41760 helo=dschgrazlin2.units.it) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gOQ7v-00068b-R2 for qemu-devel@nongnu.org; Sun, 18 Nov 2018 11:40:52 -0500 Received: from dschgrazlin2.units.it (loopback [127.0.0.1]) by dschgrazlin2.units.it (8.15.2/8.15.2) with ESMTP id wAIGeP50001236 for ; Sun, 18 Nov 2018 17:40:25 +0100 From: balducci@units.it Reply-to: balducci@units.it MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <1234.1542559249.1@dschgrazlin2.units.it> Content-Transfer-Encoding: quoted-printable Date: Sun, 18 Nov 2018 17:40:25 +0100 Message-ID: <1235.1542559249@dschgrazlin2.units.it> Subject: [Qemu-devel] 3.1.0-rc{0,1} doesn't start List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org hello I'm building qemu from source and happily using it since a bit (2.3.0) Since 3.1.0-rc0 (including latest 3.1.0-rc1) I'm no more able to start qemu, getting: ----8<---- install:115> qemu qemu: error: failed to set MSR 0x10a to 0x0 qemu: /home/balducci/tmp/install-us-d/qemu-3.1.0-rc1.d/qemu-3.1.0-rc0/= target/i386/kvm.c:2185: kvm_put_msrs: Assertion `ret =3D=3D cpu->kvm_msr_b= uf->nmsrs' failed. Aborted ---->8---- I have no idea about what the reason might be, apologies. Actually, I have found a recent (2018-10-16) post which might be related to this (it mentions the same error message from qemu): https://lkml.org/lkml/2018/10/16/440; but I'm not in the position to go through. AFAICS, the commit mentioned in the link is present in the 4.19.2 kernel I'm using, so...? I can add that 3.0.0 works nicely (everything else unchanged, including running kernel 4.19.2) OTOH, 3.1.0-rc0 dumps the same error message if I boot into 4.17.14 or 4.18.16 kernels. I enclose my specs hoping that somebody can spot where the problem might be. I will be happy to send any other detail which might be useful. I suspect that this might be some problem on my side, as I couldn't find any similar report (apart some old (qemu-2.8.50) threads, that didn't help) thanks a lot in advance for any hint/help ciao gabriele Here are my specs: # -------------------------------- # command to run qemu is: qemu -m 2G /opt/windog \ -accel kvm,thread=3Dmulti \ -netdev user,id=3Dnet0,smb=3D/home/balducci \ -device rtl8139,netdev=3Dnet0 # -------------------------------- # qemu build configuration: --prefix=3D/opt/stow.d/versions/qemu-3.1.0-rc1/usr --libdir=3D/opt/stow.d/versions/qemu-3.1.0-rc1/usr/lib64 --sysconfdir=3D/opt/stow.d/versions/qemu-3.1.0-rc1/etc --localstatedir=3D/var/run --docdir=3D/opt/stow.d/versions/qemu-3.1.0-rc1/usr/share/doc/qemu --target-list=3Dx86_64-softmmu --audio-drv-list=3Dalsa # -------------------------------- install:154> uname -sr Linux 4.19.2 # -------------------------------- install:155> cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 21 model : 48 model name : AMD Athlon(tm) X4 860K Quad Core Processor stepping : 1 microcode : 0x6003106 cpu MHz : 3473.492 cache size : 2048 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 2 apicid : 16 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca= cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pd= pe1gb rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid a= perfmperf pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xs= ave avx f16c lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misaligns= se 3dnowprefetch osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoe= xt perfctr_core perfctr_nb bpext ptsc cpb hw_pstate ssbd vmmcall fsgsbase = bmi1 xsaveopt arat npt lbrv svm_lock nrip_save tsc_scale vmcb_clean flushb= yasid decodeassists pausefilter pfthreshold overflow_recov bugs : fxsave_leak sysret_ss_attrs null_seg spectre_v1 spectre_= v2 spec_store_bypass bogomips : 7380.73 TLB size : 1536 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm 100mhzsteps hwpstate cpb eff_freq_ro [13] [...cpus 1 2 3 omitted...] # -------------------------------- install:156> egrep KVM .config-4.19.2 CONFIG_HAVE_KVM=3Dy CONFIG_HAVE_KVM_IRQCHIP=3Dy CONFIG_HAVE_KVM_IRQFD=3Dy CONFIG_HAVE_KVM_IRQ_ROUTING=3Dy CONFIG_HAVE_KVM_EVENTFD=3Dy CONFIG_KVM_MMIO=3Dy CONFIG_KVM_ASYNC_PF=3Dy CONFIG_HAVE_KVM_MSI=3Dy CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT=3Dy CONFIG_KVM_VFIO=3Dy CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT=3Dy CONFIG_KVM_COMPAT=3Dy CONFIG_HAVE_KVM_IRQ_BYPASS=3Dy CONFIG_KVM=3Dy # CONFIG_KVM_INTEL is not set CONFIG_KVM_AMD=3Dy [of course, I can send the whole kernel configuration file, if needed]