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

* move target configuration to default-configs/targets (myself)
* Memory failure event (Zhenwei)

# gpg: Signature made Mon 05 Oct 2020 08:14:29 BST
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# 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-gitlab/tags/for-upstream:
  dockerfiles: add diffutils to Fedora
  tests: tcg: do not use implicit rules
  target-i386: post memory failure event to QMP
  qapi/run-state.json: introduce memory failure event
  target-i386: seperate MCIP & MCE_MASK error reason
  meson: move sparse detection to Meson and rewrite check_sparse.py
  default-configs: remove redundant keys
  default-configs: use TARGET_ARCH key
  configure: move OpenBSD W^X test to meson
  default-configs: remove default-configs/devices for user-mode targets
  configure: remove target configuration
  configure: remove useless config-target.mak symbols
  configure: compute derivatives of target name in meson
  configure: remove dead variable
  configure: move accelerator logic to meson
  configure: rewrite accelerator defaults as tests
  configure: convert accelerator variables to meson options
  default-configs: move files to default-configs/devices/
  travis: remove TCI test

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

# Conflicts:
#	configure

2 files changed, 49 insertions, 11 deletions

diff --git a/target/i386/helper.c b/target/i386/helper.c
index 70be53e2c3..32fa21a7bb 100644
--- a/target/i386/helper.c
+++ b/target/i386/helper.c
@@ -18,6 +18,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "qapi/qapi-events-run-state.h"
 #include "cpu.h"
 #include "exec/exec-all.h"
 #include "qemu/qemu-print.h"
@@ -851,22 +852,35 @@ typedef struct MCEInjectionParams {
     int flags;
 } MCEInjectionParams;
 
+static void emit_guest_memory_failure(MemoryFailureAction action, bool ar,
+                                      bool recursive)
+{
+    MemoryFailureFlags mff = {.action_required = ar, .recursive = recursive};
+
+    qapi_event_send_memory_failure(MEMORY_FAILURE_RECIPIENT_GUEST, action,
+                                   &mff);
+}
+
 static void do_inject_x86_mce(CPUState *cs, run_on_cpu_data data)
 {
     MCEInjectionParams *params = data.host_ptr;
     X86CPU *cpu = X86_CPU(cs);
     CPUX86State *cenv = &cpu->env;
     uint64_t *banks = cenv->mce_banks + 4 * params->bank;
+    g_autofree char *msg = NULL;
+    bool need_reset = false;
+    bool recursive;
+    bool ar = !!(params->status & MCI_STATUS_AR);
 
     cpu_synchronize_state(cs);
+    recursive = !!(cenv->mcg_status & MCG_STATUS_MCIP);
 
     /*
      * If there is an MCE exception being processed, ignore this SRAO MCE
      * unless unconditional injection was requested.
      */
-    if (!(params->flags & MCE_INJECT_UNCOND_AO)
-        && !(params->status & MCI_STATUS_AR)
-        && (cenv->mcg_status & MCG_STATUS_MCIP)) {
+    if (!(params->flags & MCE_INJECT_UNCOND_AO) && !ar && recursive) {
+        emit_guest_memory_failure(MEMORY_FAILURE_ACTION_IGNORE, ar, recursive);
         return;
     }
 
@@ -894,16 +908,27 @@ static void do_inject_x86_mce(CPUState *cs, run_on_cpu_data data)
             return;
         }
 
-        if ((cenv->mcg_status & MCG_STATUS_MCIP) ||
-            !(cenv->cr[4] & CR4_MCE_MASK)) {
-            monitor_printf(params->mon,
-                           "CPU %d: Previous MCE still in progress, raising"
-                           " triple fault\n",
-                           cs->cpu_index);
-            qemu_log_mask(CPU_LOG_RESET, "Triple fault\n");
+        if (recursive) {
+            need_reset = true;
+            msg = g_strdup_printf("CPU %d: Previous MCE still in progress, "
+                                  "raising triple fault", cs->cpu_index);
+        }
+
+        if (!(cenv->cr[4] & CR4_MCE_MASK)) {
+            need_reset = true;
+            msg = g_strdup_printf("CPU %d: MCE capability is not enabled, "
+                                  "raising triple fault", cs->cpu_index);
+        }
+
+        if (need_reset) {
+            emit_guest_memory_failure(MEMORY_FAILURE_ACTION_RESET, ar,
+                                      recursive);
+            monitor_printf(params->mon, "%s", msg);
+            qemu_log_mask(CPU_LOG_RESET, "%s\n", msg);
             qemu_system_reset_request(SHUTDOWN_CAUSE_GUEST_RESET);
             return;
         }
+
         if (banks[1] & MCI_STATUS_VAL) {
             params->status |= MCI_STATUS_OVER;
         }
@@ -923,6 +948,8 @@ static void do_inject_x86_mce(CPUState *cs, run_on_cpu_data data)
     } else {
         banks[1] |= MCI_STATUS_OVER;
     }
+
+    emit_guest_memory_failure(MEMORY_FAILURE_ACTION_INJECT, ar, recursive);
 }
 
 void cpu_x86_inject_mce(Monitor *mon, X86CPU *cpu, int bank,
diff --git a/target/i386/kvm.c b/target/i386/kvm.c
index f6dae4cfb6..8b12387d30 100644
--- a/target/i386/kvm.c
+++ b/target/i386/kvm.c
@@ -13,6 +13,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "qapi/qapi-events-run-state.h"
 #include "qapi/error.h"
 #include <sys/ioctl.h>
 #include <sys/utsname.h>
@@ -549,8 +550,17 @@ static void kvm_mce_inject(X86CPU *cpu, hwaddr paddr, int code)
                        (MCM_ADDR_PHYS << 6) | 0xc, flags);
 }
 
+static void emit_hypervisor_memory_failure(MemoryFailureAction action, bool ar)
+{
+    MemoryFailureFlags mff = {.action_required = ar, .recursive = false};
+
+    qapi_event_send_memory_failure(MEMORY_FAILURE_RECIPIENT_HYPERVISOR, action,
+                                   &mff);
+}
+
 static void hardware_memory_error(void *host_addr)
 {
+    emit_hypervisor_memory_failure(MEMORY_FAILURE_ACTION_FATAL, true);
     error_report("QEMU got Hardware memory error at addr %p", host_addr);
     exit(1);
 }
@@ -605,7 +615,8 @@ void kvm_arch_on_sigbus_vcpu(CPUState *c, int code, void *addr)
         hardware_memory_error(addr);
     }
 
-    /* Hope we are lucky for AO MCE */
+    /* Hope we are lucky for AO MCE, just notify a event */
+    emit_hypervisor_memory_failure(MEMORY_FAILURE_ACTION_IGNORE, false);
 }
 
 static void kvm_reset_exception(CPUX86State *env)