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>,
x86@kernel.org, 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 v2 17/69] KVM: Add infrastructure and macro to mark VM as bugged
Date: Fri, 2 Jul 2021 15:04:23 -0700 [thread overview]
Message-ID: <3a0998645c328bf0895f1290e61821b70f048549.1625186503.git.isaku.yamahata@intel.com> (raw)
In-Reply-To: <cover.1625186503.git.isaku.yamahata@intel.com>
From: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
---
include/linux/kvm_host.h | 29 ++++++++++++++++++++++++++++-
virt/kvm/kvm_main.c | 10 +++++-----
2 files changed, 33 insertions(+), 6 deletions(-)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 8583ed3ff344..09618f8a1338 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -149,6 +149,7 @@ static inline bool is_error_page(struct page *page)
#define KVM_REQ_MMU_RELOAD (1 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
#define KVM_REQ_UNBLOCK 2
#define KVM_REQ_UNHALT 3
+#define KVM_REQ_VM_BUGGED (4 | KVM_REQUEST_WAIT | KVM_REQUEST_NO_WAKEUP)
#define KVM_REQUEST_ARCH_BASE 8
#define KVM_ARCH_REQ_FLAGS(nr, flags) ({ \
@@ -585,6 +586,8 @@ struct kvm {
pid_t userspace_pid;
unsigned int max_halt_poll_ns;
u32 dirty_ring_size;
+
+ bool vm_bugged;
};
#define kvm_err(fmt, ...) \
@@ -613,6 +616,31 @@ struct kvm {
#define vcpu_err(vcpu, fmt, ...) \
kvm_err("vcpu%i " fmt, (vcpu)->vcpu_id, ## __VA_ARGS__)
+bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req);
+static inline void kvm_vm_bugged(struct kvm *kvm)
+{
+ kvm->vm_bugged = true;
+ kvm_make_all_cpus_request(kvm, KVM_REQ_VM_BUGGED);
+}
+
+#define KVM_BUG(cond, kvm, fmt...) \
+({ \
+ int __ret = (cond); \
+ \
+ if (WARN_ONCE(__ret && !(kvm)->vm_bugged, fmt)) \
+ kvm_vm_bugged(kvm); \
+ unlikely(__ret); \
+})
+
+#define KVM_BUG_ON(cond, kvm) \
+({ \
+ int __ret = (cond); \
+ \
+ if (WARN_ON_ONCE(__ret && !(kvm)->vm_bugged)) \
+ kvm_vm_bugged(kvm); \
+ unlikely(__ret); \
+})
+
static inline bool kvm_dirty_log_manual_protect_and_init_set(struct kvm *kvm)
{
return !!(kvm->manual_dirty_log_protect & KVM_DIRTY_LOG_INITIALLY_SET);
@@ -930,7 +958,6 @@ void *kvm_mmu_memory_cache_alloc(struct kvm_mmu_memory_cache *mc);
bool kvm_make_vcpus_request_mask(struct kvm *kvm, unsigned int req,
struct kvm_vcpu *except,
unsigned long *vcpu_bitmap, cpumask_var_t tmp);
-bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req);
bool kvm_make_all_cpus_request_except(struct kvm *kvm, unsigned int req,
struct kvm_vcpu *except);
bool kvm_make_cpus_request_mask(struct kvm *kvm, unsigned int req,
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 751d1f6890b0..dc752d0bd3ec 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -3435,7 +3435,7 @@ static long kvm_vcpu_ioctl(struct file *filp,
struct kvm_fpu *fpu = NULL;
struct kvm_sregs *kvm_sregs = NULL;
- if (vcpu->kvm->mm != current->mm)
+ if (vcpu->kvm->mm != current->mm || vcpu->kvm->vm_bugged)
return -EIO;
if (unlikely(_IOC_TYPE(ioctl) != KVMIO))
@@ -3641,7 +3641,7 @@ static long kvm_vcpu_compat_ioctl(struct file *filp,
void __user *argp = compat_ptr(arg);
int r;
- if (vcpu->kvm->mm != current->mm)
+ if (vcpu->kvm->mm != current->mm || vcpu->kvm->vm_bugged)
return -EIO;
switch (ioctl) {
@@ -3707,7 +3707,7 @@ static long kvm_device_ioctl(struct file *filp, unsigned int ioctl,
{
struct kvm_device *dev = filp->private_data;
- if (dev->kvm->mm != current->mm)
+ if (dev->kvm->mm != current->mm || dev->kvm->vm_bugged)
return -EIO;
switch (ioctl) {
@@ -3991,7 +3991,7 @@ static long kvm_vm_ioctl(struct file *filp,
void __user *argp = (void __user *)arg;
int r;
- if (kvm->mm != current->mm)
+ if (kvm->mm != current->mm || kvm->vm_bugged)
return -EIO;
switch (ioctl) {
case KVM_CREATE_VCPU:
@@ -4189,7 +4189,7 @@ static long kvm_vm_compat_ioctl(struct file *filp,
struct kvm *kvm = filp->private_data;
int r;
- if (kvm->mm != current->mm)
+ if (kvm->mm != current->mm || kvm->vm_bugged)
return -EIO;
switch (ioctl) {
case KVM_GET_DIRTY_LOG: {
--
2.25.1
next prev parent reply other threads:[~2021-07-02 22:07 UTC|newest]
Thread overview: 175+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-02 22:04 [RFC PATCH v2 00/69] KVM: X86: TDX support isaku.yamahata
2021-07-02 22:04 ` [RFC PATCH v2 01/69] KVM: TDX: introduce config for KVM " isaku.yamahata
2021-07-06 12:33 ` Paolo Bonzini
2021-07-13 17:54 ` Sean Christopherson
2021-07-02 22:04 ` [RFC PATCH v2 02/69] KVM: X86: move kvm_cpu_vmxon() from vmx.c to virtext.h isaku.yamahata
2021-07-06 12:33 ` Paolo Bonzini
2021-07-13 17:49 ` Sean Christopherson
2021-07-02 22:04 ` [RFC PATCH v2 03/69] KVM: X86: move out the definition vmcs_hdr/vmcs from kvm to x86 isaku.yamahata
2021-07-06 12:33 ` Paolo Bonzini
2021-07-13 18:00 ` Sean Christopherson
2021-07-02 22:04 ` [RFC PATCH v2 04/69] KVM: TDX: Add TDX "architectural" error codes isaku.yamahata
2021-07-02 22:04 ` [RFC PATCH v2 05/69] KVM: TDX: Add architectural definitions for structures and values isaku.yamahata
2021-07-31 1:04 ` Erdem Aktas
2021-08-02 13:25 ` Xiaoyao Li
2021-08-04 20:43 ` Erdem Aktas
2021-08-04 23:13 ` Sean Christopherson
2021-07-02 22:04 ` [RFC PATCH v2 06/69] KVM: TDX: add a helper function for kvm to call seamcall isaku.yamahata
2021-07-06 12:57 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 07/69] KVM: TDX: define and export helper functions for KVM TDX support isaku.yamahata
2021-10-09 7:50 ` Wang, Wei W
2021-07-02 22:04 ` [RFC PATCH v2 08/69] KVM: TDX: add trace point before/after TDX SEAMCALLs isaku.yamahata
2021-07-06 13:23 ` Paolo Bonzini
2021-07-13 19:53 ` Sean Christopherson
2021-07-13 19:33 ` Sean Christopherson
2021-07-02 22:04 ` [RFC PATCH v2 09/69] KVM: TDX: Add C wrapper functions for " isaku.yamahata
2021-07-06 13:25 ` Paolo Bonzini
2021-07-13 19:59 ` Sean Christopherson
2021-07-02 22:04 ` [RFC PATCH v2 10/69] KVM: TDX: Print the name of SEAMCALL status code isaku.yamahata
2021-07-06 13:25 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 11/69] KVM: TDX: Introduce pr_seamcall_ex_ret_info() to print more info when SEAMCALL fails isaku.yamahata
2021-07-02 22:04 ` [RFC PATCH v2 12/69] KVM: Export kvm_io_bus_read for use by TDX for PV MMIO isaku.yamahata
2021-07-06 13:26 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 13/69] KVM: Enable hardware before doing arch VM initialization isaku.yamahata
2021-07-06 13:26 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 14/69] KVM: x86: Split core of hypercall emulation to helper function isaku.yamahata
2021-07-06 13:40 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 15/69] KVM: x86: Export kvm_mmio tracepoint for use by TDX for PV MMIO isaku.yamahata
2021-07-06 13:40 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 16/69] KVM: x86/mmu: Zap only leaf SPTEs for deleted/moved memslot by default isaku.yamahata
2021-07-06 13:44 ` Paolo Bonzini
2021-07-13 20:17 ` Sean Christopherson
2021-07-02 22:04 ` isaku.yamahata [this message]
2021-07-06 13:45 ` [RFC PATCH v2 17/69] KVM: Add infrastructure and macro to mark VM as bugged Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 18/69] KVM: Export kvm_make_all_cpus_request() for use in marking VMs " isaku.yamahata
2021-07-06 13:47 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 19/69] KVM: x86: Use KVM_BUG/KVM_BUG_ON to handle bugs that are fatal to the VM isaku.yamahata
2021-07-06 13:47 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 20/69] KVM: x86/mmu: Mark VM as bugged if page fault returns RET_PF_INVALID isaku.yamahata
2021-07-06 13:48 ` Paolo Bonzini
2021-07-13 20:28 ` Sean Christopherson
2021-07-02 22:04 ` [RFC PATCH v2 21/69] KVM: Add max_vcpus field in common 'struct kvm' isaku.yamahata
2021-07-06 13:49 ` Paolo Bonzini
2021-07-13 20:35 ` Sean Christopherson
2021-07-02 22:04 ` [RFC PATCH v2 22/69] KVM: x86: Add vm_type to differentiate legacy VMs from protected VMs isaku.yamahata
2021-07-06 13:56 ` Paolo Bonzini
2021-07-06 13:56 ` Paolo Bonzini
2021-07-13 20:39 ` Sean Christopherson
2021-11-11 3:28 ` Xiaoyao Li
2021-11-11 7:28 ` Paolo Bonzini
2021-11-11 8:29 ` Xiaoyao Li
2021-07-02 22:04 ` [RFC PATCH v2 23/69] KVM: x86: Hoist kvm_dirty_regs check out of sync_regs() isaku.yamahata
2021-07-06 13:57 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 24/69] KVM: x86: Introduce "protected guest" concept and block disallowed ioctls isaku.yamahata
2021-07-06 13:59 ` Paolo Bonzini
2021-07-20 22:08 ` Tom Lendacky
2021-11-09 13:37 ` Xiaoyao Li
2021-11-09 17:15 ` Paolo Bonzini
2021-11-10 1:45 ` Xiaoyao Li
2021-07-02 22:04 ` [RFC PATCH v2 25/69] KVM: x86: Add per-VM flag to disable direct IRQ injection isaku.yamahata
2021-07-02 22:04 ` [RFC PATCH v2 26/69] KVM: x86: Add flag to disallow #MC injection / KVM_X86_SETUP_MCE isaku.yamahata
2021-07-02 22:04 ` [RFC PATCH v2 27/69] KVM: x86: Add flag to mark TSC as immutable (for TDX) isaku.yamahata
2021-07-02 22:04 ` [RFC PATCH v2 28/69] KVM: Add per-VM flag to mark read-only memory as unsupported isaku.yamahata
2021-07-06 14:03 ` Paolo Bonzini
2021-07-06 19:04 ` Brijesh Singh
2021-07-02 22:04 ` [RFC PATCH v2 29/69] KVM: Add per-VM flag to disable dirty logging of memslots for TDs isaku.yamahata
2021-07-02 22:04 ` [RFC PATCH v2 30/69] KVM: x86: Add per-VM flag to disable in-kernel I/O APIC and level routes isaku.yamahata
2021-07-02 22:04 ` [RFC PATCH v2 31/69] KVM: x86: add per-VM flags to disable SMI/INIT/SIPI isaku.yamahata
2021-07-02 22:04 ` [RFC PATCH v2 32/69] KVM: x86: Allow host-initiated WRMSR to set X2APIC regardless of CPUID isaku.yamahata
2021-07-06 14:09 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 33/69] KVM: x86: Add kvm_x86_ops .cache_gprs() and .flush_gprs() isaku.yamahata
2021-07-06 14:10 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 34/69] KVM: x86: Add support for vCPU and device-scoped KVM_MEMORY_ENCRYPT_OP isaku.yamahata
2021-07-06 14:12 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 35/69] KVM: x86: Introduce vm_teardown() hook in kvm_arch_vm_destroy() isaku.yamahata
2021-07-06 14:34 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 36/69] KVM: x86: Add a switch_db_regs flag to handle TDX's auto-switched behavior isaku.yamahata
2021-07-06 14:36 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 37/69] KVM: x86: Check for pending APICv interrupt in kvm_vcpu_has_events() isaku.yamahata
2021-07-06 14:50 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 38/69] KVM: x86: Add option to force LAPIC expiration wait isaku.yamahata
2021-07-06 14:35 ` Paolo Bonzini
2021-07-13 20:51 ` Sean Christopherson
2021-07-02 22:04 ` [RFC PATCH v2 39/69] KVM: x86: Add guest_supported_xss placholder isaku.yamahata
2021-07-06 14:41 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 40/69] KVM: Export kvm_is_reserved_pfn() for use by TDX isaku.yamahata
2021-07-06 14:32 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 41/69] KVM: x86: Add infrastructure for stolen GPA bits isaku.yamahata
2021-07-06 14:54 ` Paolo Bonzini
2021-08-05 11:44 ` Kai Huang
2021-08-05 16:06 ` Sean Christopherson
2021-08-05 17:07 ` Edgecombe, Rick P
2021-08-05 17:39 ` Sean Christopherson
2021-08-05 18:43 ` Edgecombe, Rick P
2021-08-05 18:58 ` Sean Christopherson
2021-08-05 21:59 ` Kai Huang
2021-08-06 19:02 ` Sean Christopherson
2021-08-06 22:00 ` Kai Huang
2021-08-06 22:09 ` Sean Christopherson
2021-08-06 22:24 ` Kai Huang
2021-07-02 22:04 ` [RFC PATCH v2 42/69] KVM: x86/mmu: Explicitly check for MMIO spte in fast page fault isaku.yamahata
2021-07-06 14:54 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 43/69] KVM: x86/mmu: Allow non-zero init value for shadow PTE isaku.yamahata
2021-07-06 14:56 ` Paolo Bonzini
2021-07-08 15:20 ` Isaku Yamahata
2021-07-02 22:04 ` [RFC PATCH v2 44/69] KVM: x86/mmu: Refactor shadow walk in __direct_map() to reduce indentation isaku.yamahata
2021-07-06 14:56 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 45/69] KVM: x86/mmu: Return old SPTE from mmu_spte_clear_track_bits() isaku.yamahata
2021-07-06 14:56 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 46/69] KVM: x86/mmu: Frame in support for private/inaccessible shadow pages isaku.yamahata
2021-07-02 22:04 ` [RFC PATCH v2 47/69] KVM: x86/mmu: Move 'pfn' variable to caller of direct_page_fault() isaku.yamahata
2021-07-02 22:04 ` [RFC PATCH v2 48/69] KVM: x86/mmu: Introduce kvm_mmu_map_tdp_page() for use by TDX isaku.yamahata
2021-07-02 22:04 ` [RFC PATCH v2 49/69] KVM: VMX: Modify NMI and INTR handlers to take intr_info as param isaku.yamahata
2021-07-06 14:50 ` Paolo Bonzini
2021-07-02 22:04 ` [RFC PATCH v2 50/69] KVM: VMX: Move NMI/exception handler to common helper isaku.yamahata
2021-07-02 22:04 ` [RFC PATCH v2 51/69] KVM: x86/mmu: Allow per-VM override of the TDP max page level isaku.yamahata
2021-07-06 14:58 ` Paolo Bonzini
2021-07-13 21:02 ` Sean Christopherson
2021-07-02 22:04 ` [RFC PATCH v2 52/69] KVM: VMX: Split out guts of EPT violation to common/exposed function isaku.yamahata
2021-07-06 14:52 ` Paolo Bonzini
2021-07-13 20:57 ` Sean Christopherson
2021-07-02 22:04 ` [RFC PATCH v2 53/69] KVM: VMX: Define EPT Violation architectural bits isaku.yamahata
2021-07-06 14:41 ` Paolo Bonzini
2021-07-02 22:05 ` [RFC PATCH v2 54/69] KVM: VMX: Define VMCS encodings for shared EPT pointer isaku.yamahata
2021-07-06 14:42 ` Paolo Bonzini
2021-07-02 22:05 ` [RFC PATCH v2 55/69] KVM: VMX: Add 'main.c' to wrap VMX and TDX isaku.yamahata
2021-07-06 14:43 ` Paolo Bonzini
2021-07-08 15:21 ` Isaku Yamahata
2021-07-08 15:29 ` Paolo Bonzini
2021-07-02 22:05 ` [RFC PATCH v2 56/69] KVM: VMX: Move setting of EPT MMU masks to common VT-x code isaku.yamahata
2021-07-06 14:43 ` Paolo Bonzini
2021-07-02 22:05 ` [RFC PATCH v2 57/69] KVM: VMX: Move register caching logic to common code isaku.yamahata
2021-07-06 14:44 ` Paolo Bonzini
2021-07-02 22:05 ` [RFC PATCH v2 58/69] KVM: TDX: Define TDCALL exit reason isaku.yamahata
2021-07-02 22:05 ` [RFC PATCH v2 59/69] KVM: TDX: Stub in tdx.h with structs, accessors, and VMCS helpers isaku.yamahata
2021-07-02 22:05 ` [RFC PATCH v2 60/69] KVM: VMX: Add macro framework to read/write VMCS for VMs and TDs isaku.yamahata
2021-07-06 14:46 ` Paolo Bonzini
2021-07-13 20:56 ` Sean Christopherson
2021-07-02 22:05 ` [RFC PATCH v2 61/69] KVM: VMX: Move AR_BYTES encoder/decoder helpers to common.h isaku.yamahata
2021-07-06 14:46 ` Paolo Bonzini
2021-07-02 22:05 ` [RFC PATCH v2 62/69] KVM: VMX: MOVE GDT and IDT accessors to common code isaku.yamahata
2021-07-06 14:46 ` Paolo Bonzini
2021-07-02 22:05 ` [RFC PATCH v2 63/69] KVM: VMX: Move .get_interrupt_shadow() implementation to common VMX code isaku.yamahata
2021-07-06 14:17 ` Paolo Bonzini
2021-07-13 20:45 ` Sean Christopherson
2021-07-02 22:05 ` [RFC PATCH v2 64/69] cpu/hotplug: Document that TDX also depends on booting CPUs once isaku.yamahata
2021-07-02 22:05 ` [RFC PATCH v2 65/69] KVM: X86: Introduce initial_tsc_khz in struct kvm_arch isaku.yamahata
2021-07-06 14:22 ` Paolo Bonzini
2021-07-13 18:14 ` Sean Christopherson
2021-07-26 5:31 ` Xiaoyao Li
2021-07-13 18:09 ` Sean Christopherson
2021-07-02 22:05 ` [RFC PATCH v2 66/69] KVM: TDX: Add "basic" support for building and running Trust Domains isaku.yamahata
[not found] ` <CAAYXXYyz3S_cc9ohfkUWN4ohrNq5f+h3608CW5twb-n8i=ogBA@mail.gmail.com>
2021-10-21 21:44 ` Sagi Shahar
2021-10-24 12:59 ` Xiaoyao Li
2021-07-02 22:05 ` [RFC PATCH v2 67/69] KVM: TDX: add trace point for TDVMCALL and SEPT operation isaku.yamahata
2021-07-06 14:23 ` Paolo Bonzini
2021-07-02 22:05 ` [RFC PATCH v2 68/69] KVM: TDX: add document on TDX MODULE isaku.yamahata
2021-07-06 14:23 ` Paolo Bonzini
2021-07-02 22:05 ` [RFC PATCH v2 69/69] Documentation/virtual/kvm: Add Trust Domain Extensions(TDX) isaku.yamahata
2021-07-06 14:49 ` [RFC PATCH v2 00/69] KVM: X86: TDX support Paolo Bonzini
2021-07-06 14:53 ` Paolo Bonzini
2021-07-26 12:56 ` Paolo Bonzini
2021-07-28 16:51 ` Sean Christopherson
2021-08-02 7:33 ` Paolo Bonzini
2021-08-02 15:12 ` Sean Christopherson
2021-08-02 15:46 ` Paolo Bonzini
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