The QEMU project is currently moving its bug tracking to another system.
For this we need to know which bugs are still valid and which could be
closed already. Thus we are setting older bugs to "Incomplete" now.
If the bug has already been fixed in the latest upstream version of QEMU,
then please close this ticket as "Fix released".
If it is not fixed yet and you think that this bug report here is still
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1) If you already have an account on gitlab.com, please open a new ticket
for this problem in our new tracker here:
https://gitlab.com/qemu-project/qemu/-/issues
and then close this ticket here on Launchpad (or let it expire auto-
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2) If you don't have an account on gitlab.com and don't intend to get
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Thank you and sorry for the inconvenience.
** Changed in: qemu
Status: New => Incomplete
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1881506
Title:
TCG doesn't support a lot of features that should be supported
Status in QEMU:
Incomplete
Bug description:
This is quite odd, and I'm not sure about how to get around it. I'm writing
an OS in Rust and require APIC support. When I boot my kernel with
qemu-system-x86_64, however, it dumps out a [lot] of warnings; it claims that
TCG doesn't support FMA, X2APIC, AVX, F16C, AVX2, RDSEED, SHA-NI, FXSR-OPT,
misalignsse, 3dnowprefetch, osvw, topoext, perfctr-core, clzero, xsaveerptr,
ibpb, nrip-save, xsavec, and xsaves, but prints these warnings over 80 times
before finally doing what I told it to do. Running QEMU 5.0.0 (unknown commit
hash), as follows:
qemu-system-x86_64 -drive
format=raw,file=target\x86_64-kernel-none\debug\bootimage-kernel.bin -serial
stdio -no-reboot -hdb disk.img -s -m 4G -usb -rtc base=utc,clock=host -cpu
EPYC-v3,+acpi,+apic,+rdrand,+rdseed,+sse,+sse2,+sse4.1,+sse4.2,+sse4a,+ssse3,+syscall,+x2apic
-smp cpus=8 -soundhw all
I would run using HAXM, but my kernel requires RDRAND, and QEMU does not, to
my knowledge, automatically support RDRAND (and I don't know how to enable it).
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