Re: [PATCH] KVM: x86: Document an erratum in KVM_SET_VCPU_EVENTS on Intel CPUs

[Sean Christopherson <seanjc@google.com>]

On Thu, Oct 31, 2024, Sean Christopherson wrote:
> On Fri, 02 Aug 2024 13:04:20 -0700, Sean Christopherson wrote:
> > Document a flaw in KVM's ABI which lets userspace attempt to inject a
> > "bad" hardware exception event, and thus induce VM-Fail on Intel CPUs.
> > Fixing the flaw is a fool's errand, as AMD doesn't sanity check the
> > validity of the error code, Intel CPUs that support CET relax the check
> > for Protected Mode, userspace can change the mode after queueing an
> > exception, KVM ignores the error code when emulating Real Mode exceptions,
> > and so on and so forth.
> > 
> > [...]
> 
> Applied to kvm-x86 misc, thanks!
> 
> [1/1] KVM: x86: Document an erratum in KVM_SET_VCPU_EVENTS on Intel CPUs
>       https://github.com/kvm-x86/linux/commit/eebc1cfae6c9

FYI, I rebased misc to v6.12-rc5, as patches in another series had already been
taken through the tip tree.  New hash:

[1/1] KVM: x86: Document an erratum in KVM_SET_VCPU_EVENTS on Intel CPUs
      https://github.com/kvm-x86/linux/commit/0e3b70aa137c