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

From Alex's pull request:
* improve cross-build KVM coverage
* new --without-default-features configure flag
* add __repr__ for ConsoleSocket for debugging
* build tcg tests with -Werror
* test 32 bit builds with fedora
* remove last traces of debian9
* hotfix for centos8 powertools repo

* Move lots of feature detection code to meson (Alex, myself)
* CFI and LTO support (Daniele)
* test-char dangling pointer (Eduardo)
* Build system and win32 fixes (Marc-André)
* Initialization fixes (myself)
* TCG include cleanup (Richard, myself)
* x86 'int N' fix (Peter)

# gpg: Signature made Wed 06 Jan 2021 09:21:25 GMT
# 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: (52 commits)
  win32: drop fd registration to the main-loop on setting non-block
  configure: move tests/qemu-iotests/common.env generation to meson
  meson.build: convert --with-default-devices to meson
  libattr: convert to meson
  cap_ng: convert to meson
  virtfs: convert to meson
  seccomp: convert to meson
  zstd: convert to meson
  lzfse: convert to meson
  snappy: convert to meson
  lzo: convert to meson
  rbd: convert to meson
  libnfs: convert to meson
  libiscsi: convert to meson
  bzip2: convert to meson
  glusterfs: convert to meson
  curl: convert to meson
  curl: remove compatibility code, require 7.29.0
  brlapi: convert to meson
  configure: remove CONFIG_FILEVERSION and CONFIG_PRODUCTVERSION
  ...

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

# Conflicts:
#	trace/meson.build

2 files changed, 44 insertions, 0 deletions

diff --git a/plugins/core.c b/plugins/core.c
index 51bfc94787..87b823bbc4 100644
--- a/plugins/core.c
+++ b/plugins/core.c
@@ -31,6 +31,7 @@
 #include "tcg/tcg-op.h"
 #include "trace/mem-internal.h" /* mem_info macros */
 #include "plugin.h"
+#include "qemu/compiler.h"
 
 struct qemu_plugin_cb {
     struct qemu_plugin_ctx *ctx;
@@ -90,6 +91,12 @@ void plugin_unregister_cb__locked(struct qemu_plugin_ctx *ctx,
     }
 }
 
+/*
+ * Disable CFI checks.
+ * The callback function has been loaded from an external library so we do not
+ * have type information
+ */
+QEMU_DISABLE_CFI
 static void plugin_vcpu_cb__simple(CPUState *cpu, enum qemu_plugin_event ev)
 {
     struct qemu_plugin_cb *cb, *next;
@@ -111,6 +118,12 @@ static void plugin_vcpu_cb__simple(CPUState *cpu, enum qemu_plugin_event ev)
     }
 }
 
+/*
+ * Disable CFI checks.
+ * The callback function has been loaded from an external library so we do not
+ * have type information
+ */
+QEMU_DISABLE_CFI
 static void plugin_cb__simple(enum qemu_plugin_event ev)
 {
     struct qemu_plugin_cb *cb, *next;
@@ -128,6 +141,12 @@ static void plugin_cb__simple(enum qemu_plugin_event ev)
     }
 }
 
+/*
+ * Disable CFI checks.
+ * The callback function has been loaded from an external library so we do not
+ * have type information
+ */
+QEMU_DISABLE_CFI
 static void plugin_cb__udata(enum qemu_plugin_event ev)
 {
     struct qemu_plugin_cb *cb, *next;
@@ -325,6 +344,12 @@ void plugin_register_vcpu_mem_cb(GArray **arr,
     dyn_cb->f.generic = cb;
 }
 
+/*
+ * Disable CFI checks.
+ * The callback function has been loaded from an external library so we do not
+ * have type information
+ */
+QEMU_DISABLE_CFI
 void qemu_plugin_tb_trans_cb(CPUState *cpu, struct qemu_plugin_tb *tb)
 {
     struct qemu_plugin_cb *cb, *next;
@@ -339,6 +364,12 @@ void qemu_plugin_tb_trans_cb(CPUState *cpu, struct qemu_plugin_tb *tb)
     }
 }
 
+/*
+ * Disable CFI checks.
+ * The callback function has been loaded from an external library so we do not
+ * have type information
+ */
+QEMU_DISABLE_CFI
 void
 qemu_plugin_vcpu_syscall(CPUState *cpu, int64_t num, uint64_t a1, uint64_t a2,
                          uint64_t a3, uint64_t a4, uint64_t a5,
@@ -358,6 +389,12 @@ qemu_plugin_vcpu_syscall(CPUState *cpu, int64_t num, uint64_t a1, uint64_t a2,
     }
 }
 
+/*
+ * Disable CFI checks.
+ * The callback function has been loaded from an external library so we do not
+ * have type information
+ */
+QEMU_DISABLE_CFI
 void qemu_plugin_vcpu_syscall_ret(CPUState *cpu, int64_t num, int64_t ret)
 {
     struct qemu_plugin_cb *cb, *next;
diff --git a/plugins/loader.c b/plugins/loader.c
index 5cb9794fda..8550e61184 100644
--- a/plugins/loader.c
+++ b/plugins/loader.c
@@ -32,6 +32,7 @@
 #ifndef CONFIG_USER_ONLY
 #include "hw/boards.h"
 #endif
+#include "qemu/compiler.h"
 
 #include "plugin.h"
 
@@ -150,6 +151,12 @@ static uint64_t xorshift64star(uint64_t x)
     return x * UINT64_C(2685821657736338717);
 }
 
+/*
+ * Disable CFI checks.
+ * The install and version functions have been loaded from an external library
+ * so we do not have type information
+ */
+QEMU_DISABLE_CFI
 static int plugin_load(struct qemu_plugin_desc *desc, const qemu_info_t *info, Error **errp)
 {
     qemu_plugin_install_func_t install;