Small patches, without the one that introduces -fwrapv.

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

Small patches, without the one that introduces -fwrapv.

# gpg: Signature made Thu 26 Nov 2015 15:48:53 GMT 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:
  target-i386: kvm: Print warning when clearing mcg_cap bits
  target-i386: kvm: Use env->mcg_cap when setting up MCE
  target-i386: kvm: Abort if MCE bank count is not supported by host
  virtio-scsi: don't crash without a valid device
  target-sparc: fix 32-bit truncation in fpackfix
  exec: remove warning about mempath and hugetlbfs
  Revert "exec: silence hugetlbfs warning under qtest"
  call bdrv_drain_all() even if the vm is stopped
  MAINTAINERS: Update TCG CPU cores section

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

MAINTAINERS

@@ -62,14 +62,22 @@ Guest CPU cores (TCG):
 ----------------------
 Overall
 L: qemu-devel@nongnu.org
-S: Odd fixes
+M: Paolo Bonzini <pbonzini@redhat.com>
+M: Peter Crosthwaite <crosthwaite.peter@gmail.com>
+M: Richard Henderson <rth@twiddle.net>
+S: Maintained
 F: cpu-exec.c
+F: cpu-exec-common.c
+F: cpus.c
 F: cputlb.c
+F: exec.c
 F: softmmu_template.h
-F: translate-all.c
-F: include/exec/cpu_ldst.h
-F: include/exec/cpu_ldst_template.h
+F: translate-all.*
+F: translate-common.c
+F: include/exec/cpu*.h
+F: include/exec/exec-all.h
 F: include/exec/helper*.h
+F: include/exec/tb-hash.h
 
 Alpha
 M: Richard Henderson <rth@twiddle.net>
@@ -1042,6 +1050,7 @@ S: Supported
 F: include/exec/ioport.h
 F: ioport.c
 F: include/exec/memory.h
+F: include/exec/ram_addr.h
 F: memory.c
 F: include/exec/memory-internal.h
 F: exec.c

cpus.c

@@ -1415,6 +1415,8 @@ int vm_stop_force_state(RunState state)
         return vm_stop(state);
     } else {
         runstate_set(state);
+
+        bdrv_drain_all();
         /* Make sure to return an error if the flush in a previous vm_stop()
          * failed. */
         return bdrv_flush_all();

exec.c

@@ -51,7 +51,6 @@
 #include "qemu/main-loop.h"
 #include "translate-all.h"
 #include "sysemu/replay.h"
-#include "sysemu/qtest.h"
 
 #include "exec/memory-internal.h"
 #include "exec/ram_addr.h"
@@ -1197,11 +1196,6 @@ static long gethugepagesize(const char *path, Error **errp)
         return 0;
     }
 
-    if (!qtest_driver() &&
-        fs.f_type != HUGETLBFS_MAGIC) {
-        fprintf(stderr, "Warning: path not on HugeTLBFS: %s\n", path);
-    }
-
     return fs.f_bsize;
 }
 

hw/scsi/virtio-scsi.c

@@ -250,7 +250,7 @@ static int virtio_scsi_do_tmf(VirtIOSCSI *s, VirtIOSCSIReq *req)
     int target;
     int ret = 0;
 
-    if (s->dataplane_started) {
+    if (s->dataplane_started && d) {
         assert(blk_get_aio_context(d->conf.blk) == s->ctx);
     }
     /* Here VIRTIO_SCSI_S_OK means "FUNCTION COMPLETE".  */

target-i386/cpu.h

@@ -286,6 +286,8 @@
 #define MCE_CAP_DEF     (MCG_CTL_P|MCG_SER_P)
 #define MCE_BANKS_DEF   10
 
+#define MCG_CAP_BANKS_MASK 0xff
+
 #define MCG_STATUS_RIPV (1ULL<<0)   /* restart ip valid */
 #define MCG_STATUS_EIPV (1ULL<<1)   /* ip points to correct instruction */
 #define MCG_STATUS_MCIP (1ULL<<2)   /* machine check in progress */

target-i386/kvm.c

@@ -774,7 +774,7 @@ int kvm_arch_init_vcpu(CPUState *cs)
         && (env->features[FEAT_1_EDX] & (CPUID_MCE | CPUID_MCA)) ==
            (CPUID_MCE | CPUID_MCA)
         && kvm_check_extension(cs->kvm_state, KVM_CAP_MCE) > 0) {
-        uint64_t mcg_cap;
+        uint64_t mcg_cap, unsupported_caps;
         int banks;
         int ret;
 
@@ -784,18 +784,24 @@ int kvm_arch_init_vcpu(CPUState *cs)
             return ret;
         }
 
-        if (banks > MCE_BANKS_DEF) {
-            banks = MCE_BANKS_DEF;
+        if (banks < (env->mcg_cap & MCG_CAP_BANKS_MASK)) {
+            error_report("kvm: Unsupported MCE bank count (QEMU = %d, KVM = %d)",
+                         (int)(env->mcg_cap & MCG_CAP_BANKS_MASK), banks);
+            return -ENOTSUP;
         }
-        mcg_cap &= MCE_CAP_DEF;
-        mcg_cap |= banks;
-        ret = kvm_vcpu_ioctl(cs, KVM_X86_SETUP_MCE, &mcg_cap);
+
+        unsupported_caps = env->mcg_cap & ~(mcg_cap | MCG_CAP_BANKS_MASK);
+        if (unsupported_caps) {
+            error_report("warning: Unsupported MCG_CAP bits: 0x%" PRIx64,
+                         unsupported_caps);
+        }
+
+        env->mcg_cap &= mcg_cap | MCG_CAP_BANKS_MASK;
+        ret = kvm_vcpu_ioctl(cs, KVM_X86_SETUP_MCE, &env->mcg_cap);
         if (ret < 0) {
             fprintf(stderr, "KVM_X86_SETUP_MCE: %s", strerror(-ret));
             return ret;
         }
-
-        env->mcg_cap = mcg_cap;
     }
 
     qemu_add_vm_change_state_handler(cpu_update_state, env);

target-sparc/vis_helper.c

@@ -447,7 +447,7 @@ uint32_t helper_fpackfix(uint64_t gsr, uint64_t rs2)
     for (word = 0; word < 2; word++) {
         uint32_t val;
         int32_t src = rs2 >> (word * 32);
-        int64_t scaled = src << scale;
+        int64_t scaled = (int64_t)src << scale;
         int64_t from_fixed = scaled >> 16;
 
         val = (from_fixed < -32768 ? -32768 :

vl.c

@@ -4291,26 +4291,17 @@ int main(int argc, char **argv, char **envp)
     page_size_init();
     socket_init();
 
-    if (qemu_opts_foreach(qemu_find_opts("chardev"),
-                          chardev_init_func, NULL, NULL)) {
-        exit(1);
-    }
-
-    if (qtest_chrdev) {
-        Error *local_err = NULL;
-        qtest_init(qtest_chrdev, qtest_log, &local_err);
-        if (local_err) {
-            error_report_err(local_err);
-            exit(1);
-        }
-    }
-
     if (qemu_opts_foreach(qemu_find_opts("object"),
                           object_create,
                           object_create_initial, NULL)) {
         exit(1);
     }
 
+    if (qemu_opts_foreach(qemu_find_opts("chardev"),
+                          chardev_init_func, NULL, NULL)) {
+        exit(1);
+    }
+
 #ifdef CONFIG_VIRTFS
     if (qemu_opts_foreach(qemu_find_opts("fsdev"),
                           fsdev_init_func, NULL, NULL)) {
@@ -4337,6 +4328,15 @@ int main(int argc, char **argv, char **envp)
 
     configure_accelerator(current_machine);
 
+    if (qtest_chrdev) {
+        Error *local_err = NULL;
+        qtest_init(qtest_chrdev, qtest_log, &local_err);
+        if (local_err) {
+            error_report_err(local_err);
+            exit(1);
+        }
+    }
+
     machine_opts = qemu_get_machine_opts();
     kernel_filename = qemu_opt_get(machine_opts, "kernel");
     initrd_filename = qemu_opt_get(machine_opts, "initrd");