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From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>,
	Maxim Levitsky <mlevitsk@redhat.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>,
	Michael Kelley <mikelley@microsoft.com>,
	Siddharth Chandrasekaran <sidcha@amazon.de>,
	Yuan Yao <yuan.yao@linux.intel.com>,
	linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v5 14/37] KVM: nSVM: Keep track of Hyper-V hv_vm_id/hv_vp_id
Date: Fri, 27 May 2022 17:55:23 +0200	[thread overview]
Message-ID: <20220527155546.1528910-15-vkuznets@redhat.com> (raw)
In-Reply-To: <20220527155546.1528910-1-vkuznets@redhat.com>

Similar to nSVM, KVM needs to know L2's VM_ID/VP_ID and Partition
assist page address to handle L2 TLB flush requests.

Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
---
 arch/x86/kvm/svm/hyperv.h | 16 ++++++++++++++++
 arch/x86/kvm/svm/nested.c |  2 ++
 2 files changed, 18 insertions(+)

diff --git a/arch/x86/kvm/svm/hyperv.h b/arch/x86/kvm/svm/hyperv.h
index 7d6d97968fb9..8cf702fed7e5 100644
--- a/arch/x86/kvm/svm/hyperv.h
+++ b/arch/x86/kvm/svm/hyperv.h
@@ -9,6 +9,7 @@
 #include <asm/mshyperv.h>
 
 #include "../hyperv.h"
+#include "svm.h"
 
 /*
  * Hyper-V uses the software reserved 32 bytes in VMCB
@@ -32,4 +33,19 @@ struct hv_enlightenments {
  */
 #define VMCB_HV_NESTED_ENLIGHTENMENTS VMCB_SW
 
+static inline void nested_svm_hv_update_vm_vp_ids(struct kvm_vcpu *vcpu)
+{
+	struct vcpu_svm *svm = to_svm(vcpu);
+	struct hv_enlightenments *hve =
+		(struct hv_enlightenments *)svm->nested.ctl.reserved_sw;
+	struct kvm_vcpu_hv *hv_vcpu = to_hv_vcpu(vcpu);
+
+	if (!hv_vcpu)
+		return;
+
+	hv_vcpu->nested.pa_page_gpa = hve->partition_assist_page;
+	hv_vcpu->nested.vm_id = hve->hv_vm_id;
+	hv_vcpu->nested.vp_id = hve->hv_vp_id;
+}
+
 #endif /* __ARCH_X86_KVM_SVM_HYPERV_H__ */
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
index 2cf92c12706a..7bf35f3345c2 100644
--- a/arch/x86/kvm/svm/nested.c
+++ b/arch/x86/kvm/svm/nested.c
@@ -811,6 +811,8 @@ int enter_svm_guest_mode(struct kvm_vcpu *vcpu, u64 vmcb12_gpa,
 	if (kvm_vcpu_apicv_active(vcpu))
 		kvm_make_request(KVM_REQ_APICV_UPDATE, vcpu);
 
+	nested_svm_hv_update_vm_vp_ids(vcpu);
+
 	return 0;
 }
 
-- 
2.35.3


  parent reply	other threads:[~2022-05-27 15:57 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-27 15:55 [PATCH v5 00/37] KVM: x86: hyper-v: Fine-grained TLB flush + L2 TLB flush features Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 01/37] KVM: x86: Rename 'enable_direct_tlbflush' to 'enable_l2_tlb_flush' Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 02/37] KVM: x86: hyper-v: Resurrect dedicated KVM_REQ_HV_TLB_FLUSH flag Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 03/37] KVM: x86: hyper-v: Introduce TLB flush fifo Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 04/37] KVM: x86: hyper-v: Add helper to read hypercall data for array Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 05/37] KVM: x86: hyper-v: Handle HVCALL_FLUSH_VIRTUAL_ADDRESS_LIST{,EX} calls gently Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 06/37] KVM: x86: hyper-v: Expose support for extended gva ranges for flush hypercalls Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 07/37] KVM: x86: Prepare kvm_hv_flush_tlb() to handle L2's GPAs Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 08/37] x86/hyperv: Introduce HV_MAX_SPARSE_VCPU_BANKS/HV_VCPUS_PER_SPARSE_BANK constants Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 09/37] KVM: x86: hyper-v: Use HV_MAX_SPARSE_VCPU_BANKS/HV_VCPUS_PER_SPARSE_BANK instead of raw '64' Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 10/37] KVM: x86: hyper-v: Don't use sparse_set_to_vcpu_mask() in kvm_hv_send_ipi() Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 11/37] KVM: x86: hyper-v: Create a separate fifo for L2 TLB flush Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 12/37] KVM: x86: hyper-v: Use preallocated buffer in 'struct kvm_vcpu_hv' instead of on-stack 'sparse_banks' Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 13/37] KVM: nVMX: Keep track of hv_vm_id/hv_vp_id when eVMCS is in use Vitaly Kuznetsov
2022-05-27 15:55 ` Vitaly Kuznetsov [this message]
2022-05-27 15:55 ` [PATCH v5 15/37] KVM: x86: Introduce .hv_inject_synthetic_vmexit_post_tlb_flush() nested hook Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 16/37] KVM: x86: hyper-v: Introduce kvm_hv_is_tlb_flush_hcall() Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 17/37] KVM: x86: hyper-v: L2 TLB flush Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 18/37] KVM: x86: hyper-v: Introduce fast guest_hv_cpuid_has_l2_tlb_flush() check Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 19/37] x86/hyperv: Fix 'struct hv_enlightened_vmcs' definition Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 20/37] KVM: nVMX: hyper-v: Enable L2 TLB flush Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 21/37] KVM: nSVM: " Vitaly Kuznetsov
2022-05-31 12:18   ` Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 22/37] KVM: x86: Expose Hyper-V L2 TLB flush feature Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 23/37] KVM: selftests: Better XMM read/write helpers Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 24/37] KVM: selftests: Move HYPERV_LINUX_OS_ID definition to a common header Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 25/37] KVM: selftests: Move the function doing Hyper-V hypercall " Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 26/37] KVM: selftests: Hyper-V PV IPI selftest Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 27/37] KVM: selftests: Fill in vm->vpages_mapped bitmap in virt_map() too Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 28/37] KVM: selftests: Export vm_vaddr_unused_gap() to make it possible to request unmapped ranges Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 29/37] KVM: selftests: Export _vm_get_page_table_entry() Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 30/37] KVM: selftests: Hyper-V PV TLB flush selftest Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 31/37] KVM: selftests: Sync 'struct hv_enlightened_vmcs' definition with hyperv-tlfs.h Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 32/37] KVM: selftests: nVMX: Allocate Hyper-V partition assist page Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 33/37] KVM: selftests: nSVM: Allocate Hyper-V partition assist and VP assist pages Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 34/37] KVM: selftests: Sync 'struct hv_vp_assist_page' definition with hyperv-tlfs.h Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 35/37] KVM: selftests: evmcs_test: Introduce L2 TLB flush test Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 36/37] KVM: selftests: Move Hyper-V VP assist page enablement out of evmcs.h Vitaly Kuznetsov
2022-05-27 15:55 ` [PATCH v5 37/37] KVM: selftests: hyperv_svm_test: Introduce L2 TLB flush test Vitaly Kuznetsov

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