Re: [PATCH v2 1/1] target/riscv/kvm: fix timebase-frequency when using KVM acceleration

[Michael Tokarev]

27.04.2024 09:59, Michael Tokarev wrote:
> 27.04.2024 09:23, Andrew Jones wrote:
...
> > It's possible to cross-compile qemu, so it'd be good to add that to the CI for 
> > riscv until we can add native compiling.
>
> Yes, definitely.  Qemu is already being cross-compiled on all "other"
> architectures during CI.  But it is also being *run*, not just compiled.
> And this is what's broken on riscv64 for almost a year now, and this
> job has been disabled.  Instead, the *run* part of this job needs to
> be disabled, but *build* part should be kept.

Aha. I was wrong. And I was there before too, for sure, - just forgot
about it. In order to be cross-compiled, the cross-build environment
needs to have target -dev libraries, not only the cross-compiler.
And this is where debian riscv64 port is failing.

So no, it is not currently possible to cross-compile qemu at least
on debian without building whole cross-environment with all libraries
and other necessary stuff.

I'll try to use debian riscv64 porterbox to at least verify the new
set of patches we'll pick here to fix this breakage, at least compiles
on riscv64 :)

> 10f86d1b845087d1 isn't sufficient, since it relies on 450bd6618fda3d
> "target/riscv/kvm: change KVM_REG_RISCV_FP_D to u64".  In the same series
> there also was 49c211ffca00fdf7c "target/riscv/kvm: change KVM_REG_RISCV_FP_F
> to u32" - is it also needed?

49c211ffca00fdf7c is also needed.  So it's 3 so far, still not compile-
tested.  Anything else?

/mjt