KVM: x86: add config for non-kvm users of page tracking

Add a config option that allows kvm to determine whether or not there
are any external users of page tracking.

Signed-off-by: David Stevens <stevensd@chromium.org>
Message-Id: <20210922045859.2011227-2-stevensd@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index ac69894..6191861 100644 (file)
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -129,4 +129,7 @@ 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_EXTERNAL_WRITE_TRACKING
+       bool
+
 endif # VIRTUALIZATION

diff --git a/drivers/gpu/drm/i915/Kconfig b/drivers/gpu/drm/i915/Kconfig
index f960f5d..1077624 100644 (file)
--- a/drivers/gpu/drm/i915/Kconfig
+++ b/drivers/gpu/drm/i915/Kconfig
@@ -126,6 +126,7 @@ config DRM_I915_GVT_KVMGT
        depends on DRM_I915_GVT
        depends on KVM
        depends on VFIO_MDEV
+       select KVM_EXTERNAL_WRITE_TRACKING
        default n
        help
          Choose this option if you want to enable KVMGT support for