KVM: x86: Rework kvm_arch_interrupt_allowed() into kvm_is_interrupt_allowed()

Rename kvm_arch_interrupt_allowed() to kvm_is_interrupt_allowed() and
change its return type to a boolean, as the purpose of the helper is purely
to check if interrupts are architecturally allowed.  I.e. whether or not
interrupts are temporarily disallowed due a pending nested VM-Enter is
irrelevant (and callers are most definitely not supposed to care).

Opportunistically bury the helper in x86.c, as it hasn't been referenced by
arch-neutral code since commit a1b37100d9e2 ("KVM: Reduce runnability
interface with arch support code"), and has long since gained _very_
x86-specific semantics (see above).

Opportunistically add a comment to call out that treating -EBUSY as
"allowed" is intentional.

For all intents and purposes, no functional change intended (KVM treats
-EBUSY as "allowed" before and after).

Cc: Yosry Ahmed <yosry@kernel.org>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-ID: <20260613000329.732085-28-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

0 files changed, 0 insertions, 0 deletions