Introduce new fields in kvm_arch/vcpu_arch struct for direct build EPT support

RFC Superseded Yulei Zhang 1 participant 1 message Aug 5, 2020

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Yulei Zhang

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2020-08-05 16:51 UTC #0 lore raw

RFC 1/9 Introduce new fields in kvm_arch/vcpu_arch struct for direct build EPT support

From: Yulei Zhang <[email protected]>

Add parameter global_root_hpa for saving direct build global EPT root point, and add per-vcpu flag direct_build_tdp to indicate using global EPT root point.

Signed-off-by Yulei Zhang <[email protected]>

---
 arch/x86/include/asm/kvm_host.h | 5 +++++
 1 file changed, 5 insertions(+)

arch/x86/include/asm/kvm_host.h +5 -0

index 86e2e0272c57..2407b872f493 100644
@@ -821,6 +821,9 @@ struct kvm_vcpu_arch {
 
 	/* AMD MSRC001_0015 Hardware Configuration */
 	u64 msr_hwcr;
+
+	/* vcpu use pre-constructed EPT */
+	bool direct_build_tdp;
 };
 
 struct kvm_lpage_info {

@@ -983,6 +986,8 @@ struct kvm_arch {
 
 	struct kvm_pmu_event_filter *pmu_event_filter;
 	struct task_struct *nx_lpage_recovery_thread;
+	/* global root hpa for pre-constructed EPT */
+	hpa_t  global_root_hpa;
 };
 
 struct kvm_vm_stat {

Signature · 1 line

2.17.1