linux/virt/kvm/Kconfig
Sean Christopherson 441f7bfa99 KVM: Opt out of generic hardware enabling on s390 and PPC
Allow architectures to opt out of the generic hardware enabling logic,
and opt out on both s390 and PPC, which don't need to manually enable
virtualization as it's always on (when available).

In addition to letting s390 and PPC drop a bit of dead code, this will
hopefully also allow ARM to clean up its related code, e.g. ARM has its
own per-CPU flag to track which CPUs have enable hardware due to the
need to keep hardware enabled indefinitely when pKVM is enabled.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Acked-by: Anup Patel <anup@brainfault.org>
Message-Id: <20221130230934.1014142-50-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-12-29 15:48:37 -05:00

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# SPDX-License-Identifier: GPL-2.0
# KVM common configuration items and defaults
config HAVE_KVM
bool
config HAVE_KVM_PFNCACHE
bool
config HAVE_KVM_IRQCHIP
bool
config HAVE_KVM_IRQFD
bool
config HAVE_KVM_IRQ_ROUTING
bool
config HAVE_KVM_DIRTY_RING
bool
# Only strongly ordered architectures can select this, as it doesn't
# put any explicit constraint on userspace ordering. They can also
# select the _ACQ_REL version.
config HAVE_KVM_DIRTY_RING_TSO
bool
select HAVE_KVM_DIRTY_RING
depends on X86
# Weakly ordered architectures can only select this, advertising
# to userspace the additional ordering requirements.
config HAVE_KVM_DIRTY_RING_ACQ_REL
bool
select HAVE_KVM_DIRTY_RING
# Allow enabling both the dirty bitmap and dirty ring. Only architectures
# that need to dirty memory outside of a vCPU context should select this.
config NEED_KVM_DIRTY_RING_WITH_BITMAP
bool
depends on HAVE_KVM_DIRTY_RING
config HAVE_KVM_EVENTFD
bool
select EVENTFD
config KVM_MMIO
bool
config KVM_ASYNC_PF
bool
# Toggle to switch between direct notification and batch job
config KVM_ASYNC_PF_SYNC
bool
config HAVE_KVM_MSI
bool
config HAVE_KVM_CPU_RELAX_INTERCEPT
bool
config KVM_VFIO
bool
config HAVE_KVM_ARCH_TLB_FLUSH_ALL
bool
config HAVE_KVM_INVALID_WAKEUPS
bool
config KVM_GENERIC_DIRTYLOG_READ_PROTECT
bool
config KVM_COMPAT
def_bool y
depends on KVM && COMPAT && !(S390 || ARM64 || RISCV)
config HAVE_KVM_IRQ_BYPASS
bool
config HAVE_KVM_VCPU_ASYNC_IOCTL
bool
config HAVE_KVM_VCPU_RUN_PID_CHANGE
bool
config HAVE_KVM_NO_POLL
bool
config KVM_XFER_TO_GUEST_WORK
bool
config HAVE_KVM_PM_NOTIFIER
bool
config KVM_GENERIC_HARDWARE_ENABLING
bool