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

* Support for jemalloc
* qemu_mutex_lock_iothread "No such process" fix
* cutils: qemu_strto* wrappers
* iohandler.c simplification
* Many other fixes and misc patches.

And some MTTCG work (with Emilio's fixes squashed):
* Signal-free TCG kick
* Removing spinlock in favor of QemuMutex
* User-mode emulation multi-threading fixes/docs

# gpg: Signature made Thu 10 Sep 2015 09:03:07 BST using RSA key ID 78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"

* remotes/bonzini/tags/for-upstream: (44 commits)
  cutils: work around platform differences in strto{l,ul,ll,ull}
  cpu-exec: fix lock hierarchy for user-mode emulation
  exec: make mmap_lock/mmap_unlock globally available
  tcg: comment on which functions have to be called with mmap_lock held
  tcg: add memory barriers in page_find_alloc accesses
  remove unused spinlock.
  replace spinlock by QemuMutex.
  cpus: remove tcg_halt_cond and tcg_cpu_thread globals
  cpus: protect work list with work_mutex
  scripts/dump-guest-memory.py: fix after RAMBlock change
  configure: Add support for jemalloc
  add macro file for coccinelle
  configure: factor out adding disas configure
  vhost-scsi: fix wrong vhost-scsi firmware path
  checkpatch: remove tests that are not relevant outside the kernel
  checkpatch: adapt some tests to QEMU
  CODING_STYLE: update mixed declaration rules
  qmp: Add example usage of strto*l() qemu wrapper
  cutils: Add qemu_strtoull() wrapper
  cutils: Add qemu_strtoll() wrapper
  ...

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

1 files changed, 11 insertions, 4 deletions

diff --git a/include/exec/exec-all.h b/include/exec/exec-all.h
index b5fadf7ee3..72d4012ed9 100644
--- a/include/exec/exec-all.h
+++ b/include/exec/exec-all.h
@@ -226,7 +226,7 @@ struct TranslationBlock {
     struct TranslationBlock *jmp_first;
 };
 
-#include "exec/spinlock.h"
+#include "qemu/thread.h"
 
 typedef struct TBContext TBContext;
 
@@ -236,7 +236,7 @@ struct TBContext {
     TranslationBlock *tb_phys_hash[CODE_GEN_PHYS_HASH_SIZE];
     int nb_tbs;
     /* any access to the tbs or the page table must use this lock */
-    spinlock_t tb_lock;
+    QemuMutex tb_lock;
 
     /* statistics */
     int tb_flush_count;
@@ -375,11 +375,17 @@ void tlb_fill(CPUState *cpu, target_ulong addr, int is_write, int mmu_idx,
 #endif
 
 #if defined(CONFIG_USER_ONLY)
+void mmap_lock(void);
+void mmap_unlock(void);
+
 static inline tb_page_addr_t get_page_addr_code(CPUArchState *env1, target_ulong addr)
 {
     return addr;
 }
 #else
+static inline void mmap_lock(void) {}
+static inline void mmap_unlock(void) {}
+
 /* cputlb.c */
 tb_page_addr_t get_page_addr_code(CPUArchState *env1, target_ulong addr);
 #endif
@@ -387,8 +393,9 @@ tb_page_addr_t get_page_addr_code(CPUArchState *env1, target_ulong addr);
 /* vl.c */
 extern int singlestep;
 
-/* cpu-exec.c */
-extern volatile sig_atomic_t exit_request;
+/* cpu-exec.c, accessed with atomic_mb_read/atomic_mb_set */
+extern CPUState *tcg_current_cpu;
+extern bool exit_request;
 
 #if !defined(CONFIG_USER_ONLY)
 void migration_bitmap_extend(ram_addr_t old, ram_addr_t new);