From: yulei.kernel@gmail.com
To: pbonzini@redhat.com
Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
sean.j.christopherson@intel.com, jmattson@google.com,
junaids@google.com, bgardon@google.com, vkuznets@redhat.com,
xiaoguangrong.eric@gmail.com, kernellwp@gmail.com,
lihaiwei.kernel@gmail.com, Yulei Zhang <yuleixzhang@tencent.com>
Subject: [RFC V2 1/9] Introduce new fields in kvm_arch/vcpu_arch struct for direct build EPT support
Date: Tue, 1 Sep 2020 19:54:43 +0800 [thread overview]
Message-ID: <d7684439e1aa1c213c3a29219afda55b9b70b662.1598868204.git.yulei.kernel@gmail.com> (raw)
In-Reply-To: <cover.1598868203.git.yulei.kernel@gmail.com>
From: Yulei Zhang <yuleixzhang@tencent.com>
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 <yuleixzhang@tencent.com>
---
arch/x86/include/asm/kvm_host.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 5ab3af7275d8..485b1239ad39 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -788,6 +788,9 @@ 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 {
@@ -963,6 +966,8 @@ 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 {
--
2.17.1
next prev parent reply other threads:[~2020-09-01 12:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-01 11:52 [RFC V2 0/9] x86/mmu:Introduce parallel memory virtualization to boost performance yulei.kernel
2020-09-01 11:54 ` yulei.kernel [this message]
2020-09-01 11:55 ` [RFC V2 2/9] Introduce page table population function for direct build EPT feature yulei.kernel
2020-09-01 11:55 ` [RFC V2 3/9] Introduce page table remove " yulei.kernel
2020-09-01 11:55 ` [RFC V2 4/9] Add release function for direct build ept when guest VM exit yulei.kernel
2020-09-01 11:56 ` [RFC V2 5/9] Modify the page fault path to meet the direct build EPT requirement yulei.kernel
2020-09-01 11:56 ` [RFC V2 6/9] Apply the direct build EPT according to the memory slots change yulei.kernel
2020-09-01 11:56 ` [RFC V2 7/9] Add migration support when using direct build EPT yulei.kernel
2020-09-01 11:57 ` [RFC V2 8/9] Introduce kvm module parameter global_tdp to turn on the direct build EPT mode yulei.kernel
2020-09-01 11:57 ` [RFC V2 9/9] Handle certain mmu exposed functions properly while turn on " yulei.kernel
2020-09-09 3:04 ` [RFC V2 0/9] x86/mmu:Introduce parallel memory virtualization to boost performance Wanpeng Li
2020-09-24 6:28 ` Wanpeng Li
2020-09-24 17:14 ` Ben Gardon
2020-09-25 12:04 ` yulei zhang
2020-09-25 17:30 ` Ben Gardon
2020-09-25 20:50 ` Paolo Bonzini
2020-09-28 11:52 ` yulei zhang
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