Merge tag 'pull-maintainer-9.1-rc3-160824-1' of https://gitlab.com/stsquad/qemu into staging

Some fixes for 9.1-rc3 (build, replay, docs, plugins)

  - re-enable gdbsim-r5f562n8 test
  - ensure updates to python deps re-trigger configure
  - tweak configure detection of GDB MTE support
  - make checkpatch emit more warnings on updating headers
  - allow i386 access_ptr to force slow path for plugins
  - fixe some replay regressions
  - update the replay-dump tool
  - better handle muxed chardev during replay
  - clean up TCG plugins docs to mention scoreboards
  - fix plugin scoreboard race condition

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* tag 'pull-maintainer-9.1-rc3-160824-1' of https://gitlab.com/stsquad/qemu: (21 commits)
  plugins: fix race condition with scoreboards
  docs/devel: update tcg-plugins page
  docs: Fix some typos (found by typos) and grammar issues
  savevm: Fix load_snapshot error path crash
  virtio-net: Use virtual time for RSC timers
  virtio-net: Use replay_schedule_bh_event for bhs that affect machine state
  chardev: set record/replay on the base device of a muxed device
  tests/avocado: replay_kernel.py add x86-64 q35 machine test
  Revert "replay: stop us hanging in rr_wait_io_event"
  replay: allow runstate shutdown->running when replaying trace
  tests/avocado: excercise scripts/replay-dump.py in replay tests
  scripts/replay-dump.py: rejig decoders in event number order
  scripts/replay-dump.py: Update to current rr record format
  buildsys: Fix building without plugins on Darwin
  target/i386: allow access_ptr to force slow path on failed probe
  scripts/checkpatch: more checks on files imported from Linux
  configure: Fix GDB version detection for GDB_HAS_MTE
  configure: Avoid use of param. expansion when using gdb_version
  configure: Fix arch detection for GDB_HAS_MTE
  Makefile: trigger re-configure on updated pythondeps
  ...

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

1 files changed, 13 insertions, 14 deletions

diff --git a/target/i386/tcg/access.c b/target/i386/tcg/access.c
index 56a1181ea5..e68b73a24b 100644
--- a/target/i386/tcg/access.c
+++ b/target/i386/tcg/access.c
@@ -58,6 +58,11 @@ static void *access_ptr(X86Access *ac, vaddr addr, unsigned len)
 
     assert(addr >= ac->vaddr);
 
+    /* No haddr means probe_access wants to force slow path */
+    if (!ac->haddr1) {
+        return NULL;
+    }
+
 #ifdef CONFIG_USER_ONLY
     assert(offset <= ac->size1 - len);
     return ac->haddr1 + offset;
@@ -78,17 +83,11 @@ static void *access_ptr(X86Access *ac, vaddr addr, unsigned len)
 #endif
 }
 
-#ifdef CONFIG_USER_ONLY
-# define test_ptr(p)  true
-#else
-# define test_ptr(p)  likely(p)
-#endif
-
 uint8_t access_ldb(X86Access *ac, vaddr addr)
 {
     void *p = access_ptr(ac, addr, sizeof(uint8_t));
 
-    if (test_ptr(p)) {
+    if (likely(p)) {
         return ldub_p(p);
     }
     return cpu_ldub_mmuidx_ra(ac->env, addr, ac->mmu_idx, ac->ra);
@@ -98,7 +97,7 @@ uint16_t access_ldw(X86Access *ac, vaddr addr)
 {
     void *p = access_ptr(ac, addr, sizeof(uint16_t));
 
-    if (test_ptr(p)) {
+    if (likely(p)) {
         return lduw_le_p(p);
     }
     return cpu_lduw_le_mmuidx_ra(ac->env, addr, ac->mmu_idx, ac->ra);
@@ -108,7 +107,7 @@ uint32_t access_ldl(X86Access *ac, vaddr addr)
 {
     void *p = access_ptr(ac, addr, sizeof(uint32_t));
 
-    if (test_ptr(p)) {
+    if (likely(p)) {
         return ldl_le_p(p);
     }
     return cpu_ldl_le_mmuidx_ra(ac->env, addr, ac->mmu_idx, ac->ra);
@@ -118,7 +117,7 @@ uint64_t access_ldq(X86Access *ac, vaddr addr)
 {
     void *p = access_ptr(ac, addr, sizeof(uint64_t));
 
-    if (test_ptr(p)) {
+    if (likely(p)) {
         return ldq_le_p(p);
     }
     return cpu_ldq_le_mmuidx_ra(ac->env, addr, ac->mmu_idx, ac->ra);
@@ -128,7 +127,7 @@ void access_stb(X86Access *ac, vaddr addr, uint8_t val)
 {
     void *p = access_ptr(ac, addr, sizeof(uint8_t));
 
-    if (test_ptr(p)) {
+    if (likely(p)) {
         stb_p(p, val);
     } else {
         cpu_stb_mmuidx_ra(ac->env, addr, val, ac->mmu_idx, ac->ra);
@@ -139,7 +138,7 @@ void access_stw(X86Access *ac, vaddr addr, uint16_t val)
 {
     void *p = access_ptr(ac, addr, sizeof(uint16_t));
 
-    if (test_ptr(p)) {
+    if (likely(p)) {
         stw_le_p(p, val);
     } else {
         cpu_stw_le_mmuidx_ra(ac->env, addr, val, ac->mmu_idx, ac->ra);
@@ -150,7 +149,7 @@ void access_stl(X86Access *ac, vaddr addr, uint32_t val)
 {
     void *p = access_ptr(ac, addr, sizeof(uint32_t));
 
-    if (test_ptr(p)) {
+    if (likely(p)) {
         stl_le_p(p, val);
     } else {
         cpu_stl_le_mmuidx_ra(ac->env, addr, val, ac->mmu_idx, ac->ra);
@@ -161,7 +160,7 @@ void access_stq(X86Access *ac, vaddr addr, uint64_t val)
 {
     void *p = access_ptr(ac, addr, sizeof(uint64_t));
 
-    if (test_ptr(p)) {
+    if (likely(p)) {
         stq_le_p(p, val);
     } else {
         cpu_stq_le_mmuidx_ra(ac->env, addr, val, ac->mmu_idx, ac->ra);