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[1/3] KVM: x86: add config for non-kvm users of page tracking

Message ID 20210921081010.457591-2-stevensd@google.com (mailing list archive)
State New, archived
Headers show
Series KVM: x86: skip gfn_track allocation when possible | expand

Commit Message

David Stevens Sept. 21, 2021, 8:10 a.m. UTC 
From: David Stevens <stevensd@chromium.org>

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>
---
 arch/x86/kvm/Kconfig         | 3 +++
 drivers/gpu/drm/i915/Kconfig | 1 +
 2 files changed, 4 insertions(+)
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Patch

diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index ac69894eab88..619186138176 100644
--- 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 f960f5d7664e..107762427648 100644
--- 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