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KVM: introduce CONFIG_KVM_COMMON

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CONFIG_HAVE_KVM is currently used by some architectures to either
enabled the KVM config proper, or to enable host-side code that is
not part of the KVM module.  However, CONFIG_KVM's "select" statement
in virt/kvm/Kconfig corresponds to a third meaning, namely to
enable common Kconfigs required by all architectures that support
KVM.

These three meanings can be replaced respectively by an
architecture-specific Kconfig, by IS_ENABLED(CONFIG_KVM), or by
a new Kconfig symbol that is in turn selected by the
architecture-specific "config KVM".

Start by introducing such a new Kconfig symbol, CONFIG_KVM_COMMON.
Unlike CONFIG_HAVE_KVM, it is selected by CONFIG_KVM, not by
architecture code, and it brings in all dependencies of common
KVM code.  In particular, INTERVAL_TREE was missing in loongarch
and riscv, so that is another thing that is fixed.

Fixes: 8132d887a7 ("KVM: remove CONFIG_HAVE_KVM_EVENTFD", 2023-12-08)
Reported-by: Randy Dunlap <rdunlap@infradead.org>
Closes: https://lore.kernel.org/all/44907c6b-c5bd-4e4a-a921-e4d3825539d8@infradead.org/
Reviewed-by: Andrew Jones <ajones@ventanamicro.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2024-01-04 11:15:07 -05:00
parent 9cc52627c7
commit caadf876bb
8 changed files with 12 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm64/kvm/Kconfig
View File

@ -21,9 +21,9 @@ if VIRTUALIZATION
menuconfig KVM
bool "Kernel-based Virtual Machine (KVM) support"
depends on HAVE_KVM
select KVM_COMMON
select KVM_GENERIC_HARDWARE_ENABLING
select KVM_GENERIC_MMU_NOTIFIER
select PREEMPT_NOTIFIERS
select HAVE_KVM_CPU_RELAX_INTERCEPT
select KVM_MMIO
select KVM_GENERIC_DIRTYLOG_READ_PROTECT
@ -39,7 +39,6 @@ menuconfig KVM
select HAVE_KVM_VCPU_RUN_PID_CHANGE
select SCHED_INFO
select GUEST_PERF_EVENTS if PERF_EVENTS
select INTERVAL_TREE
select XARRAY_MULTI
help
Support hosting virtualized guest machines.

2
arch/loongarch/kvm/Kconfig
View File

@ -23,12 +23,12 @@ config KVM
depends on HAVE_KVM
select HAVE_KVM_DIRTY_RING_ACQ_REL
select HAVE_KVM_VCPU_ASYNC_IOCTL
select KVM_COMMON
select KVM_GENERIC_DIRTYLOG_READ_PROTECT
select KVM_GENERIC_HARDWARE_ENABLING
select KVM_GENERIC_MMU_NOTIFIER
select KVM_MMIO
select KVM_XFER_TO_GUEST_WORK
select PREEMPT_NOTIFIERS
help
Support hosting virtualized guest machines using
hardware virtualization extensions. You will need

3
arch/mips/kvm/Kconfig
View File

@ -20,12 +20,11 @@ config KVM
depends on HAVE_KVM
depends on MIPS_FP_SUPPORT
select EXPORT_UASM
select PREEMPT_NOTIFIERS
select KVM_COMMON
select KVM_GENERIC_DIRTYLOG_READ_PROTECT
select HAVE_KVM_VCPU_ASYNC_IOCTL
select KVM_MMIO
select KVM_GENERIC_MMU_NOTIFIER
select INTERVAL_TREE
select KVM_GENERIC_HARDWARE_ENABLING
help
Support for hosting Guest kernels.

3
arch/powerpc/kvm/Kconfig
View File

@ -19,12 +19,11 @@ if VIRTUALIZATION
config KVM
bool
select PREEMPT_NOTIFIERS
select KVM_COMMON
select HAVE_KVM_VCPU_ASYNC_IOCTL
select KVM_VFIO
select IRQ_BYPASS_MANAGER
select HAVE_KVM_IRQ_BYPASS
select INTERVAL_TREE
config KVM_BOOK3S_HANDLER
bool

2
arch/riscv/kvm/Kconfig
View File

@ -24,12 +24,12 @@ config KVM
select HAVE_KVM_IRQ_ROUTING
select HAVE_KVM_MSI
select HAVE_KVM_VCPU_ASYNC_IOCTL
select KVM_COMMON
select KVM_GENERIC_DIRTYLOG_READ_PROTECT
select KVM_GENERIC_HARDWARE_ENABLING
select KVM_MMIO
select KVM_XFER_TO_GUEST_WORK
select KVM_GENERIC_MMU_NOTIFIER
select PREEMPT_NOTIFIERS
select SCHED_INFO
help
Support hosting virtualized guest machines.

3
arch/s390/kvm/Kconfig
View File

@ -20,17 +20,16 @@ config KVM
def_tristate y
prompt "Kernel-based Virtual Machine (KVM) support"
depends on HAVE_KVM
select PREEMPT_NOTIFIERS
select HAVE_KVM_CPU_RELAX_INTERCEPT
select HAVE_KVM_VCPU_ASYNC_IOCTL
select KVM_ASYNC_PF
select KVM_ASYNC_PF_SYNC
select KVM_COMMON
select HAVE_KVM_IRQCHIP
select HAVE_KVM_IRQ_ROUTING
select HAVE_KVM_INVALID_WAKEUPS
select HAVE_KVM_NO_POLL
select KVM_VFIO
select INTERVAL_TREE
select MMU_NOTIFIER
help
Support hosting paravirtualized guest machines using the SIE

3
arch/x86/kvm/Kconfig
View File

@ -23,7 +23,7 @@ config KVM
depends on HAVE_KVM
depends on HIGH_RES_TIMERS
depends on X86_LOCAL_APIC
select PREEMPT_NOTIFIERS
select KVM_COMMON
select KVM_GENERIC_MMU_NOTIFIER
select HAVE_KVM_IRQCHIP
select HAVE_KVM_PFNCACHE
@ -44,7 +44,6 @@ config KVM
select KVM_XFER_TO_GUEST_WORK
select KVM_GENERIC_DIRTYLOG_READ_PROTECT
select KVM_VFIO
select INTERVAL_TREE
select HAVE_KVM_PM_NOTIFIER if PM
select KVM_GENERIC_HARDWARE_ENABLING
help

5
virt/kvm/Kconfig
View File

@ -3,7 +3,12 @@
config HAVE_KVM
bool
config KVM_COMMON
bool
select EVENTFD
select INTERVAL_TREE
select PREEMPT_NOTIFIERS
config HAVE_KVM_PFNCACHE
bool