[Expired for QEMU because there has been no activity for 60 days.]
** Changed in: qemu
Status: Incomplete => Expired
--
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:
Expired
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).
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1881506/+subscriptions
