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

* Make checkpatch say 'qemu' instead of 'kernel' (Aleksandar)
* Fix PSE guests with emulated NPT (Alexander B. #1)
* Fix leak (Alexander B. #2)
* HVF fixes (Roman, Cameron)
* New Sapphire Rapids CPUID bits (Cathy)
* cpus.c and softmmu/ cleanups (Claudio)
* TAP driver tweaks (Daniel, Havard)
* object-add bugfix and testcases (Eric A.)
* Fix Coverity MIN_CONST and MAX_CONST (Eric B.)
* "info lapic" improvement (Jan)
* SSE fixes (Joseph)
* "-msg guest-name" option (Mario)
* support for AMD nested live migration (myself)
* Small i386 TCG fixes (myself)
* improved error reporting for Xen (myself)
* fix "-cpu host -overcommit cpu-pm=on" (myself)
* Add accel/Kconfig (Philippe)
* iscsi sense handling fixes (Yongji)
* Misc bugfixes

# gpg: Signature made Sat 11 Jul 2020 00:33:41 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/tags/for-upstream: (47 commits)
  linux-headers: update again to 5.8
  apic: Report current_count via 'info lapic'
  scripts: improve message when TAP based tests fail
  target/i386: Enable TSX Suspend Load Address Tracking feature
  target/i386: Add SERIALIZE cpu feature
  softmmu/vl: Remove the check for colons in -accel parameters
  cpu-throttle: new module, extracted from cpus.c
  softmmu: move softmmu only files from root
  pc: fix leak in pc_system_flash_cleanup_unused
  cpus: Move CPU code from exec.c to cpus-common.c
  target/i386: Correct the warning message of Intel PT
  checkpatch: Change occurences of 'kernel' to 'qemu' in user messages
  iscsi: return -EIO when sense fields are meaningless
  iscsi: handle check condition status in retry loop
  target/i386: sev: fail query-sev-capabilities if QEMU cannot use SEV
  target/i386: sev: provide proper error reporting for query-sev-capabilities
  KVM: x86: believe what KVM says about WAITPKG
  target/i386: implement undocumented "smsw r32" behavior
  target/i386: remove gen_io_end
  Makefile: simplify MINIKCONF rules
  ...

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

9 files changed, 128 insertions, 47 deletions

diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h
index b3f4b79318..5542577d2b 100644
--- a/include/hw/core/cpu.h
+++ b/include/hw/core/cpu.h
@@ -822,43 +822,6 @@ bool cpu_exists(int64_t id);
  */
 CPUState *cpu_by_arch_id(int64_t id);
 
-/**
- * cpu_throttle_set:
- * @new_throttle_pct: Percent of sleep time. Valid range is 1 to 99.
- *
- * Throttles all vcpus by forcing them to sleep for the given percentage of
- * time. A throttle_percentage of 25 corresponds to a 75% duty cycle roughly.
- * (example: 10ms sleep for every 30ms awake).
- *
- * cpu_throttle_set can be called as needed to adjust new_throttle_pct.
- * Once the throttling starts, it will remain in effect until cpu_throttle_stop
- * is called.
- */
-void cpu_throttle_set(int new_throttle_pct);
-
-/**
- * cpu_throttle_stop:
- *
- * Stops the vcpu throttling started by cpu_throttle_set.
- */
-void cpu_throttle_stop(void);
-
-/**
- * cpu_throttle_active:
- *
- * Returns: %true if the vcpus are currently being throttled, %false otherwise.
- */
-bool cpu_throttle_active(void);
-
-/**
- * cpu_throttle_get_percentage:
- *
- * Returns the vcpu throttle percentage. See cpu_throttle_set for details.
- *
- * Returns: The throttle percentage in range 1 to 99.
- */
-int cpu_throttle_get_percentage(void);
-
 #ifndef CONFIG_USER_ONLY
 
 typedef void (*CPUInterruptHandler)(CPUState *, int);
diff --git a/include/hw/i386/apic_internal.h b/include/hw/i386/apic_internal.h
index b04bdd947f..2597000e03 100644
--- a/include/hw/i386/apic_internal.h
+++ b/include/hw/i386/apic_internal.h
@@ -211,6 +211,7 @@ void vapic_report_tpr_access(DeviceState *dev, CPUState *cpu, target_ulong ip,
                              TPRAccess access);
 
 int apic_get_ppr(APICCommonState *s);
+uint32_t apic_get_current_count(APICCommonState *s);
 
 static inline void apic_set_bit(uint32_t *tab, int index)
 {
diff --git a/include/qemu/error-report.h b/include/qemu/error-report.h
index 87532d8596..a5ad95ff1b 100644
--- a/include/qemu/error-report.h
+++ b/include/qemu/error-report.h
@@ -75,5 +75,7 @@ void error_init(const char *argv0);
 const char *error_get_progname(void);
 
 extern bool error_with_timestamp;
+extern bool error_with_guestname;
+extern const char *error_guest_name;
 
 #endif
diff --git a/include/qemu/main-loop.h b/include/qemu/main-loop.h
index a6d20b0719..8e98613656 100644
--- a/include/qemu/main-loop.h
+++ b/include/qemu/main-loop.h
@@ -303,6 +303,11 @@ void qemu_mutex_unlock_iothread(void);
  */
 void qemu_cond_wait_iothread(QemuCond *cond);
 
+/*
+ * qemu_cond_timedwait_iothread: like the previous, but with timeout
+ */
+void qemu_cond_timedwait_iothread(QemuCond *cond, int ms);
+
 /* internal interfaces */
 
 void qemu_fd_register(int fd);
diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index 0d26a1b9bd..0fc206ae61 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -250,7 +250,8 @@ extern int daemon(int, int);
  * Note that neither form is usable as an #if condition; if you truly
  * need to write conditional code that depends on a minimum or maximum
  * determined by the pre-processor instead of the compiler, you'll
- * have to open-code it.
+ * have to open-code it.  Sadly, Coverity is severely confused by the
+ * constant variants, so we have to dumb things down there.
  */
 #undef MIN
 #define MIN(a, b)                                       \
@@ -258,22 +259,28 @@ extern int daemon(int, int);
         typeof(1 ? (a) : (b)) _a = (a), _b = (b);       \
         _a < _b ? _a : _b;                              \
     })
-#define MIN_CONST(a, b)                                         \
-    __builtin_choose_expr(                                      \
-        __builtin_constant_p(a) && __builtin_constant_p(b),     \
-        (a) < (b) ? (a) : (b),                                  \
-        ((void)0))
 #undef MAX
 #define MAX(a, b)                                       \
     ({                                                  \
         typeof(1 ? (a) : (b)) _a = (a), _b = (b);       \
         _a > _b ? _a : _b;                              \
     })
-#define MAX_CONST(a, b)                                         \
+
+#ifdef __COVERITY__
+# define MIN_CONST(a, b) ((a) < (b) ? (a) : (b))
+# define MAX_CONST(a, b) ((a) > (b) ? (a) : (b))
+#else
+# define MIN_CONST(a, b)                                        \
+    __builtin_choose_expr(                                      \
+        __builtin_constant_p(a) && __builtin_constant_p(b),     \
+        (a) < (b) ? (a) : (b),                                  \
+        ((void)0))
+# define MAX_CONST(a, b)                                        \
     __builtin_choose_expr(                                      \
         __builtin_constant_p(a) && __builtin_constant_p(b),     \
         (a) > (b) ? (a) : (b),                                  \
         ((void)0))
+#endif
 
 /*
  * Minimum function that returns zero only if both values are zero.
diff --git a/include/qom/object.h b/include/qom/object.h
index 10fd4a2d4c..79c8f838b6 100644
--- a/include/qom/object.h
+++ b/include/qom/object.h
@@ -1047,7 +1047,7 @@ Object *object_ref(Object *obj);
 void object_unref(Object *obj);
 
 /**
- * object_property_add:
+ * object_property_try_add:
  * @obj: the object to add a property to
  * @name: the name of the property.  This can contain any character except for
  *  a forward slash.  In general, you should use hyphens '-' instead of
@@ -1064,10 +1064,23 @@ void object_unref(Object *obj);
  *   meant to allow a property to free its opaque upon object
  *   destruction.  This may be NULL.
  * @opaque: an opaque pointer to pass to the callbacks for the property
+ * @errp: pointer to error object
  *
  * Returns: The #ObjectProperty; this can be used to set the @resolve
  * callback for child and link properties.
  */
+ObjectProperty *object_property_try_add(Object *obj, const char *name,
+                                        const char *type,
+                                        ObjectPropertyAccessor *get,
+                                        ObjectPropertyAccessor *set,
+                                        ObjectPropertyRelease *release,
+                                        void *opaque, Error **errp);
+
+/**
+ * object_property_add:
+ * Same as object_property_try_add() with @errp hardcoded to
+ * &error_abort.
+ */
 ObjectProperty *object_property_add(Object *obj, const char *name,
                                     const char *type,
                                     ObjectPropertyAccessor *get,
@@ -1518,10 +1531,11 @@ Object *object_resolve_path_type(const char *path, const char *typename,
 Object *object_resolve_path_component(Object *parent, const char *part);
 
 /**
- * object_property_add_child:
+ * object_property_try_add_child:
  * @obj: the object to add a property to
  * @name: the name of the property
  * @child: the child object
+ * @errp: pointer to error object
  *
  * Child properties form the composition tree.  All objects need to be a child
  * of another object.  Objects can only be a child of one object.
@@ -1535,6 +1549,14 @@ Object *object_resolve_path_component(Object *parent, const char *part);
  *
  * Returns: The newly added property on success, or %NULL on failure.
  */
+ObjectProperty *object_property_try_add_child(Object *obj, const char *name,
+                                              Object *child, Error **errp);
+
+/**
+ * object_property_add_child:
+ * Same as object_property_try_add_child() with @errp hardcoded to
+ * &error_abort
+ */
 ObjectProperty *object_property_add_child(Object *obj, const char *name,
                                           Object *child);
 
diff --git a/include/sysemu/cpu-throttle.h b/include/sysemu/cpu-throttle.h
new file mode 100644
index 0000000000..d65bdef6d0
--- /dev/null
+++ b/include/sysemu/cpu-throttle.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (c) 2012 SUSE LINUX Products GmbH
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see
+ * <http://www.gnu.org/licenses/gpl-2.0.html>
+ */
+
+#ifndef SYSEMU_CPU_THROTTLE_H
+#define SYSEMU_CPU_THROTTLE_H
+
+#include "qemu/timer.h"
+
+/**
+ * cpu_throttle_init:
+ *
+ * Initialize the CPU throttling API.
+ */
+void cpu_throttle_init(void);
+
+/**
+ * cpu_throttle_set:
+ * @new_throttle_pct: Percent of sleep time. Valid range is 1 to 99.
+ *
+ * Throttles all vcpus by forcing them to sleep for the given percentage of
+ * time. A throttle_percentage of 25 corresponds to a 75% duty cycle roughly.
+ * (example: 10ms sleep for every 30ms awake).
+ *
+ * cpu_throttle_set can be called as needed to adjust new_throttle_pct.
+ * Once the throttling starts, it will remain in effect until cpu_throttle_stop
+ * is called.
+ */
+void cpu_throttle_set(int new_throttle_pct);
+
+/**
+ * cpu_throttle_stop:
+ *
+ * Stops the vcpu throttling started by cpu_throttle_set.
+ */
+void cpu_throttle_stop(void);
+
+/**
+ * cpu_throttle_active:
+ *
+ * Returns: %true if the vcpus are currently being throttled, %false otherwise.
+ */
+bool cpu_throttle_active(void);
+
+/**
+ * cpu_throttle_get_percentage:
+ *
+ * Returns the vcpu throttle percentage. See cpu_throttle_set for details.
+ *
+ * Returns: The throttle percentage in range 1 to 99.
+ */
+int cpu_throttle_get_percentage(void);
+
+#endif /* SYSEMU_CPU_THROTTLE_H */
diff --git a/include/sysemu/hvf.h b/include/sysemu/hvf.h
index 5214ed5202..6d3ee4fdb7 100644
--- a/include/sysemu/hvf.h
+++ b/include/sysemu/hvf.h
@@ -28,8 +28,8 @@ int hvf_vcpu_exec(CPUState *);
 void hvf_cpu_synchronize_state(CPUState *);
 void hvf_cpu_synchronize_post_reset(CPUState *);
 void hvf_cpu_synchronize_post_init(CPUState *);
+void hvf_cpu_synchronize_pre_loadvm(CPUState *);
 void hvf_vcpu_destroy(CPUState *);
-void hvf_reset_vcpu(CPUState *);
 
 #define TYPE_HVF_ACCEL ACCEL_CLASS_NAME("hvf")
 
diff --git a/include/sysemu/hw_accel.h b/include/sysemu/hw_accel.h
index 0ec2372477..e128f8b06b 100644
--- a/include/sysemu/hw_accel.h
+++ b/include/sysemu/hw_accel.h
@@ -14,6 +14,7 @@
 #include "hw/core/cpu.h"
 #include "sysemu/hax.h"
 #include "sysemu/kvm.h"
+#include "sysemu/hvf.h"
 #include "sysemu/whpx.h"
 
 static inline void cpu_synchronize_state(CPUState *cpu)
@@ -24,6 +25,9 @@ static inline void cpu_synchronize_state(CPUState *cpu)
     if (hax_enabled()) {
         hax_cpu_synchronize_state(cpu);
     }
+    if (hvf_enabled()) {
+        hvf_cpu_synchronize_state(cpu);
+    }
     if (whpx_enabled()) {
         whpx_cpu_synchronize_state(cpu);
     }
@@ -37,6 +41,9 @@ static inline void cpu_synchronize_post_reset(CPUState *cpu)
     if (hax_enabled()) {
         hax_cpu_synchronize_post_reset(cpu);
     }
+    if (hvf_enabled()) {
+        hvf_cpu_synchronize_post_reset(cpu);
+    }
     if (whpx_enabled()) {
         whpx_cpu_synchronize_post_reset(cpu);
     }
@@ -50,6 +57,9 @@ static inline void cpu_synchronize_post_init(CPUState *cpu)
     if (hax_enabled()) {
         hax_cpu_synchronize_post_init(cpu);
     }
+    if (hvf_enabled()) {
+        hvf_cpu_synchronize_post_init(cpu);
+    }
     if (whpx_enabled()) {
         whpx_cpu_synchronize_post_init(cpu);
     }
@@ -63,6 +73,9 @@ static inline void cpu_synchronize_pre_loadvm(CPUState *cpu)
     if (hax_enabled()) {
         hax_cpu_synchronize_pre_loadvm(cpu);
     }
+    if (hvf_enabled()) {
+        hvf_cpu_synchronize_pre_loadvm(cpu);
+    }
     if (whpx_enabled()) {
         whpx_cpu_synchronize_pre_loadvm(cpu);
     }