On Mon, Jun 26, 2023 at 6:33 AM Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:
>
> On Mon, Jun 26, 2023 at 9:59 AM Huacai Chen <chenhuacai@xxxxxxxxxxx> wrote:
> >
> > After commit 45c7e8af4a5e3f0bea4ac209 ("MIPS: Remove KVM_TE support") we
> > get a NULL pointer dereference when creating a KVM guest:
>
> To be honest, a bug that needed 2 years to be reproduced is probably a
> sign that KVM/MIPS has no users. Any objections to removing it
> altogether?
ACK:
1. It's still broken after this patch [1]. The most well-tested MIPS
distros, i.e., Debian/OpenWrt, have CONFIG_KVM=n. (The latter doesn't
even provide the QEMU package on MIPS.)
2. Burden on QEMU dev. There is no guarantee that QEMU would work with
KVM even if we could fix the kernel -- it actually does not until
v8.0 [1], which is by luck:
commit a844873512400fae6bed9e87694dc96ff2f15f39
Author: Paolo Bonzini <pbonzini@xxxxxxxxxx>
Date: Sun Dec 18 01:06:45 2022 +0100
mips: Remove support for trap and emulate KVM
This support was limited to the Malta board, drop it.
I do not have a machine that can run VZ KVM, so I am assuming
that it works for -M malta as well.
(The latest Debian stable only ships v7.2.)
[1] https://lore.kernel.org/r/ZI0R76Fx25Q2EThZ@xxxxxxxxxx/
