2018-09-02 02:22:49

by Fengguang Wu

Subject: [RFC][PATCH 5/5] [PATCH 5/5] kvm-ept-idle: enable module

Signed-off-by: Fengguang Wu <[email protected]>
---
arch/x86/kvm/Kconfig | 11 +++++++++++
arch/x86/kvm/Makefile | 4 ++++
2 files changed, 15 insertions(+)

diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 1bbec387d289..4c6dec47fac6 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -96,6 +96,17 @@ config KVM_MMU_AUDIT
This option adds a R/W kVM module parameter 'mmu_audit', which allows
auditing of KVM MMU events at runtime.

+config KVM_EPT_IDLE
+ tristate "KVM EPT idle page tracking"
+ depends on KVM_INTEL
+ depends on PROC_PAGE_MONITOR
+ ---help---
+ Provides support for walking EPT to get the A bits on Intel
+ processors equipped with the VT extensions.
+
+ To compile this as a module, choose M here: the module
+ will be called kvm-ept-idle.
+
# OK, it's a little counter-intuitive to do this, but it puts it neatly under
# the virtualization menu.
source drivers/vhost/Kconfig
diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
index dc4f2fdf5e57..5cad0590205d 100644
--- a/arch/x86/kvm/Makefile
+++ b/arch/x86/kvm/Makefile
@@ -19,6 +19,10 @@ kvm-y += x86.o mmu.o emulate.o i8259.o irq.o lapic.o \
kvm-intel-y += vmx.o pmu_intel.o
kvm-amd-y += svm.o pmu_amd.o

+kvm-ept-idle-y += ept_idle.o
+
obj-$(CONFIG_KVM) += kvm.o
obj-$(CONFIG_KVM_INTEL) += kvm-intel.o
obj-$(CONFIG_KVM_AMD) += kvm-amd.o
+
+obj-$(CONFIG_KVM_EPT_IDLE) += kvm-ept-idle.o
--
2.15.0

2018-09-04 19:16:10

by Sean Christopherson

Subject: Re: [RFC][PATCH 5/5] [PATCH 5/5] kvm-ept-idle: enable module

On Sat, Sep 01, 2018 at 07:28:23PM +0800, Fengguang Wu wrote:
> Signed-off-by: Fengguang Wu <[email protected]>
> ---
> arch/x86/kvm/Kconfig | 11 +++++++++++
> arch/x86/kvm/Makefile | 4 ++++
> 2 files changed, 15 insertions(+)
>
> diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
> index 1bbec387d289..4c6dec47fac6 100644
> --- a/arch/x86/kvm/Kconfig
> +++ b/arch/x86/kvm/Kconfig
> @@ -96,6 +96,17 @@ config KVM_MMU_AUDIT
> This option adds a R/W kVM module parameter 'mmu_audit', which allows
> auditing of KVM MMU events at runtime.
>
> +config KVM_EPT_IDLE
> + tristate "KVM EPT idle page tracking"

KVM_MMU_IDLE_INTEL might be a more user friendly name, I doubt that
all Kconfig users would immediately associate EPT with Intel's two
dimensional paging. And it meshes nicely with KVM_MMU_IDLE as a base
name if we ever want to move common functionality to its own module,
as well as all of the other KVM_MMU_* nomenclature.

> + depends on KVM_INTEL
> + depends on PROC_PAGE_MONITOR
> + ---help---
> + Provides support for walking EPT to get the A bits on Intel
> + processors equipped with the VT extensions.
> +
> + To compile this as a module, choose M here: the module
> + will be called kvm-ept-idle.
> +
> # OK, it's a little counter-intuitive to do this, but it puts it neatly under
> # the virtualization menu.
> source drivers/vhost/Kconfig
> diff --git a/arch/x86/kvm/Makefile b/arch/x86/kvm/Makefile
> index dc4f2fdf5e57..5cad0590205d 100644
> --- a/arch/x86/kvm/Makefile
> +++ b/arch/x86/kvm/Makefile
> @@ -19,6 +19,10 @@ kvm-y += x86.o mmu.o emulate.o i8259.o irq.o lapic.o \
> kvm-intel-y += vmx.o pmu_intel.o
> kvm-amd-y += svm.o pmu_amd.o
>
> +kvm-ept-idle-y += ept_idle.o
> +
> obj-$(CONFIG_KVM) += kvm.o
> obj-$(CONFIG_KVM_INTEL) += kvm-intel.o
> obj-$(CONFIG_KVM_AMD) += kvm-amd.o
> +
> +obj-$(CONFIG_KVM_EPT_IDLE) += kvm-ept-idle.o
> --
> 2.15.0
>
>
>