From: isaku.yamahata@intel.com
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H . Peter Anvin" <hpa@zytor.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
erdemaktas@google.com, Connor Kuehl <ckuehl@redhat.com>,
Sean Christopherson <seanjc@google.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: isaku.yamahata@intel.com, isaku.yamahata@gmail.com,
Sean Christopherson <sean.j.christopherson@intel.com>
Subject: [RFC PATCH v3 26/59] KVM: x86: Introduce vm_teardown() hook in kvm_arch_vm_destroy()
Date: Wed, 24 Nov 2021 16:20:09 -0800 [thread overview]
Message-ID: <1fa2d0db387a99352d44247728c5b8ae5f5cab4d.1637799475.git.isaku.yamahata@intel.com> (raw)
In-Reply-To: <cover.1637799475.git.isaku.yamahata@intel.com>
From: Sean Christopherson <sean.j.christopherson@intel.com>
Add a second kvm_x86_ops hook in kvm_arch_vm_destroy() to support TDX's
destruction path, which needs to first put the VM into a teardown state,
then free per-vCPU resource, and finally free per-VM resources.
Note, this knowingly creates a discrepancy in nomenclature for SVM as
svm_vm_teardown() invokes avic_vm_destroy() and sev_vm_destroy().
Moving the now-misnamed functions or renaming them is left to a future
patch so as not to introduce a functional change for SVM.
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
---
arch/x86/include/asm/kvm-x86-ops.h | 1 +
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/svm/svm.c | 5 +++--
arch/x86/kvm/vmx/vmx.c | 7 +++++++
arch/x86/kvm/x86.c | 3 ++-
5 files changed, 14 insertions(+), 3 deletions(-)
diff --git a/arch/x86/include/asm/kvm-x86-ops.h b/arch/x86/include/asm/kvm-x86-ops.h
index 30754f2b8a99..1009541fd6c2 100644
--- a/arch/x86/include/asm/kvm-x86-ops.h
+++ b/arch/x86/include/asm/kvm-x86-ops.h
@@ -20,6 +20,7 @@ KVM_X86_OP(has_emulated_msr)
KVM_X86_OP(vcpu_after_set_cpuid)
KVM_X86_OP(is_vm_type_supported)
KVM_X86_OP(vm_init)
+KVM_X86_OP_NULL(vm_teardown)
KVM_X86_OP_NULL(vm_destroy)
KVM_X86_OP(vcpu_create)
KVM_X86_OP(vcpu_free)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 74c3c1629563..3bc5417f94ec 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1321,6 +1321,7 @@ struct kvm_x86_ops {
bool (*is_vm_type_supported)(unsigned long vm_type);
unsigned int vm_size;
int (*vm_init)(struct kvm *kvm);
+ void (*vm_teardown)(struct kvm *kvm);
void (*vm_destroy)(struct kvm *kvm);
/* Create, but do not attach this VCPU */
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index 2ef77d4566a9..1bf410add13b 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -4556,7 +4556,7 @@ static void svm_vcpu_deliver_sipi_vector(struct kvm_vcpu *vcpu, u8 vector)
sev_vcpu_deliver_sipi_vector(vcpu, vector);
}
-static void svm_vm_destroy(struct kvm *kvm)
+static void svm_vm_teardown(struct kvm *kvm)
{
avic_vm_destroy(kvm);
sev_vm_destroy(kvm);
@@ -4597,7 +4597,8 @@ static struct kvm_x86_ops svm_x86_ops __initdata = {
.is_vm_type_supported = svm_is_vm_type_supported,
.vm_size = sizeof(struct kvm_svm),
.vm_init = svm_vm_init,
- .vm_destroy = svm_vm_destroy,
+ .vm_teardown = svm_vm_teardown,
+ .vm_destroy = NULL,
.prepare_guest_switch = svm_prepare_guest_switch,
.vcpu_load = svm_vcpu_load,
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index f2905e00b063..5e4c6ac9fe69 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -6890,6 +6890,11 @@ static int vmx_vm_init(struct kvm *kvm)
return 0;
}
+static void vmx_vm_destroy(struct kvm *kvm)
+{
+
+}
+
static int __init vmx_check_processor_compat(void)
{
struct vmcs_config vmcs_conf;
@@ -7513,6 +7518,8 @@ static struct kvm_x86_ops vmx_x86_ops __initdata = {
.is_vm_type_supported = vmx_is_vm_type_supported,
.vm_size = sizeof(struct kvm_vmx),
.vm_init = vmx_vm_init,
+ .vm_teardown = NULL,
+ .vm_destroy = vmx_vm_destroy,
.vcpu_create = vmx_create_vcpu,
.vcpu_free = vmx_free_vcpu,
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index f2091c4b928a..88b55ddb22a7 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -11613,7 +11613,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
__x86_set_memory_region(kvm, TSS_PRIVATE_MEMSLOT, 0, 0);
mutex_unlock(&kvm->slots_lock);
}
- static_call_cond(kvm_x86_vm_destroy)(kvm);
+ static_call_cond(kvm_x86_vm_teardown)(kvm);
kvm_free_msr_filter(srcu_dereference_check(kvm->arch.msr_filter, &kvm->srcu, 1));
kvm_pic_destroy(kvm);
kvm_ioapic_destroy(kvm);
@@ -11624,6 +11624,7 @@ void kvm_arch_destroy_vm(struct kvm *kvm)
kvm_page_track_cleanup(kvm);
kvm_xen_destroy_vm(kvm);
kvm_hv_destroy_vm(kvm);
+ static_call_cond(kvm_x86_vm_destroy)(kvm);
}
static void memslot_rmap_free(struct kvm_memory_slot *slot)
--
2.25.1
next prev parent reply other threads:[~2021-11-25 0:21 UTC|newest]
Thread overview: 123+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-25 0:19 [RFC PATCH v3 00/59] KVM: X86: TDX support isaku.yamahata
2021-11-25 0:19 ` [RFC PATCH v3 01/59] x86/mktme: move out MKTME related constatnts/macro to msr-index.h isaku.yamahata
2021-11-25 0:19 ` [RFC PATCH v3 02/59] x86/mtrr: mask out keyid bits from variable mtrr mask register isaku.yamahata
2021-11-25 0:19 ` [RFC PATCH v3 03/59] KVM: TDX: Define TDX architectural definitions isaku.yamahata
2021-11-25 0:19 ` [RFC PATCH v3 04/59] KVM: TDX: Add TDX "architectural" error codes isaku.yamahata
2021-11-25 0:19 ` [RFC PATCH v3 05/59] KVM: TDX: add a helper function for kvm to call seamcall isaku.yamahata
2021-11-25 0:19 ` [RFC PATCH v3 06/59] KVM: TDX: Add C wrapper functions for TDX SEAMCALLs isaku.yamahata
2021-11-25 0:19 ` [RFC PATCH v3 07/59] KVM: TDX: Add helper functions to print TDX SEAMCALL error isaku.yamahata
2021-11-25 0:19 ` [RFC PATCH v3 08/59] KVM: Export kvm_io_bus_read for use by TDX for PV MMIO isaku.yamahata
2021-11-25 17:14 ` Thomas Gleixner
2021-11-25 0:19 ` [RFC PATCH v3 09/59] KVM: Enable hardware before doing arch VM initialization isaku.yamahata
2021-11-25 19:02 ` Thomas Gleixner
2021-11-25 0:19 ` [RFC PATCH v3 10/59] KVM: x86: Split core of hypercall emulation to helper function isaku.yamahata
2021-11-25 0:19 ` [RFC PATCH v3 11/59] KVM: x86: Export kvm_mmio tracepoint for use by TDX for PV MMIO isaku.yamahata
2021-11-25 0:19 ` [RFC PATCH v3 12/59] KVM: x86/mmu: Zap only leaf SPTEs for deleted/moved memslot by default isaku.yamahata
2021-11-25 19:04 ` Thomas Gleixner
2021-11-25 0:19 ` [RFC PATCH v3 13/59] KVM: Add max_vcpus field in common 'struct kvm' isaku.yamahata
2021-11-25 19:06 ` Thomas Gleixner
2021-11-25 0:19 ` [RFC PATCH v3 14/59] KVM: x86: Add vm_type to differentiate legacy VMs from protected VMs isaku.yamahata
2021-11-25 19:08 ` Thomas Gleixner
2021-11-29 17:35 ` Sean Christopherson
2021-12-01 19:37 ` Isaku Yamahata
2021-12-03 16:14 ` Sean Christopherson
2021-11-25 0:19 ` [RFC PATCH v3 15/59] KVM: x86: Introduce "protected guest" concept and block disallowed ioctls isaku.yamahata
2021-11-25 19:26 ` Thomas Gleixner
2021-11-25 0:19 ` [RFC PATCH v3 16/59] KVM: x86: Add per-VM flag to disable direct IRQ injection isaku.yamahata
2021-11-25 19:31 ` Thomas Gleixner
2021-11-29 2:49 ` Lai Jiangshan
2021-11-25 0:20 ` [RFC PATCH v3 17/59] KVM: x86: Add flag to disallow #MC injection / KVM_X86_SETUP_MCE isaku.yamahata
2021-11-25 19:33 ` Thomas Gleixner
2021-11-25 0:20 ` [RFC PATCH v3 18/59] KVM: x86: Add flag to mark TSC as immutable (for TDX) isaku.yamahata
2021-11-25 19:40 ` Thomas Gleixner
2021-11-29 18:05 ` Sean Christopherson
2021-11-25 0:20 ` [RFC PATCH v3 19/59] KVM: Add per-VM flag to mark read-only memory as unsupported isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 20/59] KVM: Add per-VM flag to disable dirty logging of memslots for TDs isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 21/59] KVM: x86: Add per-VM flag to disable in-kernel I/O APIC and level routes isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 22/59] KVM: x86: add per-VM flags to disable SMI/INIT/SIPI isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 23/59] KVM: x86: Allow host-initiated WRMSR to set X2APIC regardless of CPUID isaku.yamahata
2021-11-25 19:41 ` Thomas Gleixner
2021-11-26 8:18 ` Paolo Bonzini
2021-11-29 21:21 ` Sean Christopherson
2021-11-25 0:20 ` [RFC PATCH v3 24/59] KVM: x86: Add kvm_x86_ops .cache_gprs() and .flush_gprs() isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 25/59] KVM: x86: Add support for vCPU and device-scoped KVM_MEMORY_ENCRYPT_OP isaku.yamahata
2021-11-25 19:42 ` Thomas Gleixner
2021-11-25 0:20 ` isaku.yamahata [this message]
2021-11-25 19:46 ` [RFC PATCH v3 26/59] KVM: x86: Introduce vm_teardown() hook in kvm_arch_vm_destroy() Thomas Gleixner
2021-11-25 20:54 ` Paolo Bonzini
2021-11-25 21:11 ` Thomas Gleixner
2021-11-29 18:16 ` Sean Christopherson
2021-11-25 0:20 ` [RFC PATCH v3 27/59] KVM: x86: Add a switch_db_regs flag to handle TDX's auto-switched behavior isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 28/59] KVM: x86: Check for pending APICv interrupt in kvm_vcpu_has_events() isaku.yamahata
2021-11-25 20:50 ` Paolo Bonzini
2021-11-29 19:20 ` Sean Christopherson
2021-11-25 0:20 ` [RFC PATCH v3 29/59] KVM: x86: Add option to force LAPIC expiration wait isaku.yamahata
2021-11-25 19:53 ` Thomas Gleixner
2021-11-25 0:20 ` [RFC PATCH v3 30/59] KVM: x86: Add guest_supported_xss placholder isaku.yamahata
2021-11-25 19:55 ` Thomas Gleixner
2021-11-25 0:20 ` [RFC PATCH v3 31/59] KVM: x86: Add infrastructure for stolen GPA bits isaku.yamahata
2021-11-25 20:00 ` Thomas Gleixner
2021-11-25 0:20 ` [RFC PATCH v3 32/59] KVM: x86/mmu: Explicitly check for MMIO spte in fast page fault isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 33/59] KVM: x86/mmu: Ignore bits 63 and 62 when checking for "present" SPTEs isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 34/59] KVM: x86/mmu: Allow non-zero init value for shadow PTE isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 35/59] KVM: x86/mmu: Return old SPTE from mmu_spte_clear_track_bits() isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 36/59] KVM: x86/mmu: Frame in support for private/inaccessible shadow pages isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 37/59] KVM: x86/mmu: Introduce kvm_mmu_map_tdp_page() for use by TDX isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 38/59] KVM: x86/mmu: Allow per-VM override of the TDP max page level isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 39/59] KVM: VMX: Modify NMI and INTR handlers to take intr_info as param isaku.yamahata
2021-11-25 20:06 ` Thomas Gleixner
2021-11-25 0:20 ` [RFC PATCH v3 40/59] KVM: VMX: Move NMI/exception handler to common helper isaku.yamahata
2021-11-25 20:06 ` Thomas Gleixner
2021-11-25 0:20 ` [RFC PATCH v3 41/59] KVM: VMX: Split out guts of EPT violation to common/exposed function isaku.yamahata
2021-11-25 20:07 ` Thomas Gleixner
2021-11-25 0:20 ` [RFC PATCH v3 42/59] KVM: VMX: Define EPT Violation architectural bits isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 43/59] KVM: VMX: Define VMCS encodings for shared EPT pointer isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 44/59] KVM: VMX: Add 'main.c' to wrap VMX and TDX isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 45/59] KVM: VMX: Move setting of EPT MMU masks to common VT-x code isaku.yamahata
2021-11-25 20:08 ` Thomas Gleixner
2021-11-25 0:20 ` [RFC PATCH v3 46/59] KVM: VMX: Move register caching logic to common code isaku.yamahata
2021-11-25 20:11 ` Thomas Gleixner
2021-11-25 20:17 ` Paolo Bonzini
2021-11-29 18:23 ` Sean Christopherson
2021-11-29 18:28 ` Paolo Bonzini
2021-11-25 0:20 ` [RFC PATCH v3 47/59] KVM: TDX: Define TDCALL exit reason isaku.yamahata
2021-11-25 20:19 ` Thomas Gleixner
2021-11-29 18:36 ` Sean Christopherson
2021-11-25 0:20 ` [RFC PATCH v3 48/59] KVM: TDX: Stub in tdx.h with structs, accessors, and VMCS helpers isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 49/59] KVM: VMX: Add macro framework to read/write VMCS for VMs and TDs isaku.yamahata
2021-11-25 20:24 ` Thomas Gleixner
2021-11-25 0:20 ` [RFC PATCH v3 50/59] KVM: VMX: Move AR_BYTES encoder/decoder helpers to common.h isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 51/59] KVM: VMX: MOVE GDT and IDT accessors to common code isaku.yamahata
2021-11-25 20:25 ` Thomas Gleixner
2021-11-25 0:20 ` [RFC PATCH v3 52/59] KVM: VMX: Move .get_interrupt_shadow() implementation to common VMX code isaku.yamahata
2021-11-25 20:26 ` Thomas Gleixner
2021-11-25 0:20 ` [RFC PATCH v3 53/59] KVM: x86: Add a helper function to restore 4 host MSRs on exit to user space isaku.yamahata
2021-11-25 20:34 ` Thomas Gleixner
2021-11-26 9:19 ` Chao Gao
2021-11-26 9:40 ` Paolo Bonzini
2021-11-29 7:08 ` Lai Jiangshan
2021-11-29 9:26 ` Chao Gao
2021-11-30 4:58 ` Lai Jiangshan
2021-11-30 8:19 ` Chao Gao
2021-11-30 11:18 ` Lai Jiangshan
2021-11-25 0:20 ` [RFC PATCH v3 54/59] KVM: X86: Introduce initial_tsc_khz in struct kvm_arch isaku.yamahata
2021-11-25 20:48 ` Paolo Bonzini
2021-11-25 21:05 ` Thomas Gleixner
2021-11-25 22:13 ` Paolo Bonzini
2021-11-25 22:59 ` Thomas Gleixner
2021-11-25 23:26 ` Thomas Gleixner
2021-11-26 7:56 ` Paolo Bonzini
2021-11-29 23:38 ` Sean Christopherson
2021-11-25 0:20 ` [RFC PATCH v3 55/59] KVM: TDX: Add "basic" support for building and running Trust Domains isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 56/59] KVM: TDX: Protect private mapping related SEAMCALLs with spinlock isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 57/59] KVM, x86/mmu: Support TDX private mapping for TDP MMU isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 58/59] KVM: TDX: exit to user space on GET_QUOTE, SETUP_EVENT_NOTIFY_INTERRUPT isaku.yamahata
2021-11-25 0:20 ` [RFC PATCH v3 59/59] Documentation/virtual/kvm: Add Trust Domain Extensions(TDX) isaku.yamahata
2021-11-25 2:12 ` [RFC PATCH v3 00/59] KVM: X86: TDX support Xiaoyao Li
2021-11-30 18:51 ` Sean Christopherson
2021-12-01 13:22 ` Kai Huang
2021-12-01 19:08 ` Isaku Yamahata
2021-12-01 19:32 ` Sean Christopherson
2021-12-01 20:28 ` Kai Huang
2021-12-01 15:05 ` Paolo Bonzini
2021-12-01 20:16 ` Kai Huang
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