Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* Nuke hw_compat_4_0_1 and pc_compat_4_0_1 (Greg)
* Static analysis fixes (Igor, Lidong)
* X86 Hyper-V CPUID improvements (Vitaly)
* X86 nested virt migration (Liran)
* New MSR-based features (Xiaoyao)

# gpg: Signature made Fri 21 Jun 2019 12:25:42 BST
# gpg:                using RSA key BFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (25 commits)
  hw: Nuke hw_compat_4_0_1 and pc_compat_4_0_1
  util/main-loop: Fix incorrect assertion
  sd: Fix out-of-bounds assertions
  target/i386: kvm: Add nested migration blocker only when kernel lacks required capabilities
  target/i386: kvm: Add support for KVM_CAP_EXCEPTION_PAYLOAD
  target/i386: kvm: Add support for save and restore nested state
  vmstate: Add support for kernel integer types
  linux-headers: sync with latest KVM headers from Linux 5.2
  target/i386: kvm: Block migration for vCPUs exposed with nested virtualization
  target/i386: kvm: Re-inject #DB to guest with updated DR6
  target/i386: kvm: Use symbolic constant for #DB/#BP exception constants
  KVM: Introduce kvm_arch_destroy_vcpu()
  target/i386: kvm: Delete VMX migration blocker on vCPU init failure
  target/i386: define a new MSR based feature word - FEAT_CORE_CAPABILITY
  i386/kvm: add support for Direct Mode for Hyper-V synthetic timers
  i386/kvm: hv-evmcs requires hv-vapic
  i386/kvm: hv-tlbflush/ipi require hv-vpindex
  i386/kvm: hv-stimer requires hv-time and hv-synic
  i386/kvm: implement 'hv-passthrough' mode
  i386/kvm: document existing Hyper-V enlightenments
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 21 insertions, 4 deletions

diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c
index b0c4bed6e3..e3cf72883b 100644
--- a/accel/kvm/kvm-all.c
+++ b/accel/kvm/kvm-all.c
@@ -87,6 +87,7 @@ struct KVMState
 #ifdef KVM_CAP_SET_GUEST_DEBUG
     QTAILQ_HEAD(, kvm_sw_breakpoint) kvm_sw_breakpoints;
 #endif
+    int max_nested_state_len;
     int many_ioeventfds;
     int intx_set_mask;
     bool sync_mmu;
@@ -291,6 +292,11 @@ int kvm_destroy_vcpu(CPUState *cpu)
 
     DPRINTF("kvm_destroy_vcpu\n");
 
+    ret = kvm_arch_destroy_vcpu(cpu);
+    if (ret < 0) {
+        goto err;
+    }
+
     mmap_size = kvm_ioctl(s, KVM_GET_VCPU_MMAP_SIZE, 0);
     if (mmap_size < 0) {
         ret = mmap_size;
@@ -863,8 +869,8 @@ static void kvm_mem_ioeventfd_add(MemoryListener *listener,
                                data, true, int128_get64(section->size),
                                match_data);
     if (r < 0) {
-        fprintf(stderr, "%s: error adding ioeventfd: %s\n",
-                __func__, strerror(-r));
+        fprintf(stderr, "%s: error adding ioeventfd: %s (%d)\n",
+                __func__, strerror(-r), -r);
         abort();
     }
 }
@@ -881,6 +887,8 @@ static void kvm_mem_ioeventfd_del(MemoryListener *listener,
                                data, false, int128_get64(section->size),
                                match_data);
     if (r < 0) {
+        fprintf(stderr, "%s: error deleting ioeventfd: %s (%d)\n",
+                __func__, strerror(-r), -r);
         abort();
     }
 }
@@ -897,8 +905,8 @@ static void kvm_io_ioeventfd_add(MemoryListener *listener,
                               data, true, int128_get64(section->size),
                               match_data);
     if (r < 0) {
-        fprintf(stderr, "%s: error adding ioeventfd: %s\n",
-                __func__, strerror(-r));
+        fprintf(stderr, "%s: error adding ioeventfd: %s (%d)\n",
+                __func__, strerror(-r), -r);
         abort();
     }
 }
@@ -916,6 +924,8 @@ static void kvm_io_ioeventfd_del(MemoryListener *listener,
                               data, false, int128_get64(section->size),
                               match_data);
     if (r < 0) {
+        fprintf(stderr, "%s: error deleting ioeventfd: %s (%d)\n",
+                __func__, strerror(-r), -r);
         abort();
     }
 }
@@ -1672,6 +1682,8 @@ static int kvm_init(MachineState *ms)
     s->debugregs = kvm_check_extension(s, KVM_CAP_DEBUGREGS);
 #endif
 
+    s->max_nested_state_len = kvm_check_extension(s, KVM_CAP_NESTED_STATE);
+
 #ifdef KVM_CAP_IRQ_ROUTING
     kvm_direct_msi_allowed = (kvm_check_extension(s, KVM_CAP_SIGNAL_MSI) > 0);
 #endif
@@ -2239,6 +2251,11 @@ int kvm_has_debugregs(void)
     return kvm_state->debugregs;
 }
 
+int kvm_max_nested_state_length(void)
+{
+    return kvm_state->max_nested_state_len;
+}
+
 int kvm_has_many_ioeventfds(void)
 {
     if (!kvm_enabled()) {