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 == cpu->kvm_msr_buf->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=multi \
-netdev user,id=net0,smb=/home/balducci \
-device rtl8139,netdev=net0
# --------------------------------
# qemu build configuration:
--prefix=/opt/stow.d/versions/qemu-3.1.0-rc1/usr
--libdir=/opt/stow.d/versions/qemu-3.1.0-rc1/usr/lib64
--sysconfdir=/opt/stow.d/versions/qemu-3.1.0-rc1/etc
--localstatedir=/var/run
--docdir=/opt/stow.d/versions/qemu-3.1.0-rc1/usr/share/doc/qemu
--target-list=x86_64-softmmu
--audio-drv-list=alsa
# --------------------------------
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 pdpe1gb
rdtscp lm constant_tsc rep_good nopl nonstop_tsc cpuid extd_apicid aperfmperf
pni pclmulqdq monitor ssse3 fma cx16 sse4_1 sse4_2 popcnt aes xsave avx f16c
lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch
osvw ibs xop skinit wdt lwp fma4 tce nodeid_msr tbm topoext 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 flushbyasid 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=y
CONFIG_HAVE_KVM_IRQCHIP=y
CONFIG_HAVE_KVM_IRQFD=y
CONFIG_HAVE_KVM_IRQ_ROUTING=y
CONFIG_HAVE_KVM_EVENTFD=y
CONFIG_KVM_MMIO=y
CONFIG_KVM_ASYNC_PF=y
CONFIG_HAVE_KVM_MSI=y
CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT=y
CONFIG_KVM_VFIO=y
CONFIG_KVM_GENERIC_DIRTYLOG_READ_PROTECT=y
CONFIG_KVM_COMPAT=y
CONFIG_HAVE_KVM_IRQ_BYPASS=y
CONFIG_KVM=y
# CONFIG_KVM_INTEL is not set
CONFIG_KVM_AMD=y
[of course, I can send the whole kernel configuration file, if needed]
