virtio, pci, pc: bugfixes, checkpatch, maintainers

Bugfixes all over the place.
 Add a new balloon maintainer.
 A checkpatch enhancement to enforce ACPI change rules.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio, pci, pc: bugfixes, checkpatch, maintainers

Bugfixes all over the place.
Add a new balloon maintainer.
A checkpatch enhancement to enforce ACPI change rules.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Tue 31 Mar 2020 15:54:36 BST
# gpg:                using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* remotes/mst/tags/for_upstream:
  vhost-vsock: fix double close() in the realize() error path
  acpi: add acpi=OnOffAuto machine property to x86 and arm virt
  fix vhost_user_blk_watch crash
  hw/i386/amd_iommu.c: Fix corruption of log events passed to guest
  virtio-iommu: avoid memleak in the unrealize
  virtio-blk: delete vqs on the error path in realize()
  acpi: pcihp: fix left shift undefined behavior in acpi_pcihp_eject_slot()
  virtio-serial-bus: Plug memory leak on realize() error paths
  MAINTAINERS: Add myself as virtio-balloon co-maintainer
  checkpatch: enforce process for expected files

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

MAINTAINERS

@@ -1634,6 +1634,15 @@ F: hw/virtio/trace-events
 F: net/vhost-user.c
 F: include/hw/virtio/
 
+virtio-balloon
+M: Michael S. Tsirkin <mst@redhat.com>
+M: David Hildenbrand <david@redhat.com>
+S: Maintained
+F: hw/virtio/virtio-balloon*.c
+F: include/hw/virtio/virtio-balloon.h
+F: balloon.c
+F: include/sysemu/balloon.h
+
 virtio-9p
 M: Greg Kurz <groug@kaod.org>
 R: Christian Schoenebeck <qemu_oss@crudebyte.com>

hw/acpi/pcihp.c

@@ -154,7 +154,7 @@ static void acpi_pcihp_eject_slot(AcpiPciHpState *s, unsigned bsel, unsigned slo
 
     trace_acpi_pci_eject_slot(bsel, slot);
 
-    if (!bus) {
+    if (!bus || slot > 31) {
         return;
     }
 

hw/arm/virt-acpi-build.c

@@ -910,7 +910,7 @@ void virt_acpi_setup(VirtMachineState *vms)
         return;
     }
 
-    if (!acpi_enabled) {
+    if (!virt_is_acpi_enabled(vms)) {
         trace_virt_acpi_setup();
         return;
     }

hw/arm/virt.c

@@ -67,6 +67,7 @@
 #include "kvm_arm.h"
 #include "hw/firmware/smbios.h"
 #include "qapi/visitor.h"
+#include "qapi/qapi-visit-common.h"
 #include "standard-headers/linux/input.h"
 #include "hw/arm/smmuv3.h"
 #include "hw/acpi/acpi.h"
@@ -1844,7 +1845,7 @@ static void machvirt_init(MachineState *machine)
 
     create_pcie(vms);
 
-    if (has_ged && aarch64 && firmware_loaded && acpi_enabled) {
+    if (has_ged && aarch64 && firmware_loaded && virt_is_acpi_enabled(vms)) {
         vms->acpi_dev = create_acpi_ged(vms);
     } else {
         create_gpio(vms);
@@ -1934,6 +1935,31 @@ static void virt_set_its(Object *obj, bool value, Error **errp)
     vms->its = value;
 }
 
+bool virt_is_acpi_enabled(VirtMachineState *vms)
+{
+    if (vms->acpi == ON_OFF_AUTO_OFF) {
+        return false;
+    }
+    return true;
+}
+
+static void virt_get_acpi(Object *obj, Visitor *v, const char *name,
+                          void *opaque, Error **errp)
+{
+    VirtMachineState *vms = VIRT_MACHINE(obj);
+    OnOffAuto acpi = vms->acpi;
+
+    visit_type_OnOffAuto(v, name, &acpi, errp);
+}
+
+static void virt_set_acpi(Object *obj, Visitor *v, const char *name,
+                          void *opaque, Error **errp)
+{
+    VirtMachineState *vms = VIRT_MACHINE(obj);
+
+    visit_type_OnOffAuto(v, name, &vms->acpi, errp);
+}
+
 static char *virt_get_gic_version(Object *obj, Error **errp)
 {
     VirtMachineState *vms = VIRT_MACHINE(obj);
@@ -2113,7 +2139,7 @@ static HotplugHandler *virt_machine_get_hotplug_handler(MachineState *machine,
     if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) {
         VirtMachineState *vms = VIRT_MACHINE(machine);
 
-        if (!vms->bootinfo.firmware_loaded || !acpi_enabled) {
+        if (!vms->bootinfo.firmware_loaded || !virt_is_acpi_enabled(vms)) {
             return HOTPLUG_HANDLER(machine);
         }
     }
@@ -2184,6 +2210,12 @@ static void virt_machine_class_init(ObjectClass *oc, void *data)
     mc->numa_mem_supported = true;
     mc->auto_enable_numa_with_memhp = true;
     mc->default_ram_id = "mach-virt.ram";
+
+    object_class_property_add(oc, "acpi", "OnOffAuto",
+        virt_get_acpi, virt_set_acpi,
+        NULL, NULL, &error_abort);
+    object_class_property_set_description(oc, "acpi",
+        "Enable ACPI", &error_abort);
 }
 
 static void virt_instance_init(Object *obj)

hw/block/vhost-user-blk.c

@@ -349,18 +349,6 @@ static void vhost_user_blk_disconnect(DeviceState *dev)
     vhost_dev_cleanup(&s->dev);
 }
 
-static gboolean vhost_user_blk_watch(GIOChannel *chan, GIOCondition cond,
-                                     void *opaque)
-{
-    DeviceState *dev = opaque;
-    VirtIODevice *vdev = VIRTIO_DEVICE(dev);
-    VHostUserBlk *s = VHOST_USER_BLK(vdev);
-
-    qemu_chr_fe_disconnect(&s->chardev);
-
-    return true;
-}
-
 static void vhost_user_blk_event(void *opaque, QEMUChrEvent event)
 {
     DeviceState *dev = opaque;
@@ -373,15 +361,9 @@ static void vhost_user_blk_event(void *opaque, QEMUChrEvent event)
             qemu_chr_fe_disconnect(&s->chardev);
             return;
         }
-        s->watch = qemu_chr_fe_add_watch(&s->chardev, G_IO_HUP,
-                                         vhost_user_blk_watch, dev);
         break;
     case CHR_EVENT_CLOSED:
         vhost_user_blk_disconnect(dev);
-        if (s->watch) {
-            g_source_remove(s->watch);
-            s->watch = 0;
-        }
         break;
     case CHR_EVENT_BREAK:
     case CHR_EVENT_MUX_IN:
@@ -428,7 +410,6 @@ static void vhost_user_blk_device_realize(DeviceState *dev, Error **errp)
 
     s->inflight = g_new0(struct vhost_inflight, 1);
     s->vhost_vqs = g_new0(struct vhost_virtqueue, s->num_queues);
-    s->watch = 0;
     s->connected = false;
 
     qemu_chr_fe_set_handlers(&s->chardev,  NULL, NULL, vhost_user_blk_event,

hw/block/virtio-blk.c

@@ -1204,6 +1204,9 @@ static void virtio_blk_device_realize(DeviceState *dev, Error **errp)
     virtio_blk_data_plane_create(vdev, conf, &s->dataplane, &err);
     if (err != NULL) {
         error_propagate(errp, err);
+        for (i = 0; i < conf->num_queues; i++) {
+            virtio_del_queue(vdev, i);
+        }
         virtio_cleanup(vdev);
         return;
     }

hw/char/virtio-serial-bus.c

@@ -943,7 +943,6 @@ static void virtser_port_device_realize(DeviceState *dev, Error **errp)
     Error *err = NULL;
 
     port->vser = bus->vser;
-    port->bh = qemu_bh_new(flush_queued_data_bh, port);
 
     assert(vsc->have_data);
 
@@ -992,6 +991,7 @@ static void virtser_port_device_realize(DeviceState *dev, Error **errp)
         return;
     }
 
+    port->bh = qemu_bh_new(flush_queued_data_bh, port);
     port->elem = NULL;
 }
 

hw/i386/acpi-build.c

@@ -3024,7 +3024,7 @@ void acpi_setup(void)
         return;
     }
 
-    if (!acpi_enabled) {
+    if (!x86_machine_is_acpi_enabled(X86_MACHINE(pcms))) {
         ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n");
         return;
     }

hw/i386/amd_iommu.c

@@ -181,7 +181,7 @@ static void amdvi_log_event(AMDVIState *s, uint64_t *evt)
     }
 
     if (dma_memory_write(&address_space_memory, s->evtlog + s->evtlog_tail,
-        &evt, AMDVI_EVENT_LEN)) {
+                         evt, AMDVI_EVENT_LEN)) {
         trace_amdvi_evntlog_fail(s->evtlog, s->evtlog_tail);
     }
 

hw/i386/pc.c

@@ -1297,7 +1297,7 @@ static void pc_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
      * but pcms->acpi_dev is still created. Check !acpi_enabled in
      * addition to cover this case.
      */
-    if (!pcms->acpi_dev || !acpi_enabled) {
+    if (!pcms->acpi_dev || !x86_machine_is_acpi_enabled(X86_MACHINE(pcms))) {
         error_setg(errp,
                    "memory hotplug is not enabled: missing acpi device or acpi disabled");
         return;
@@ -1351,7 +1351,7 @@ static void pc_memory_unplug_request(HotplugHandler *hotplug_dev,
      * but pcms->acpi_dev is still created. Check !acpi_enabled in
      * addition to cover this case.
      */
-    if (!pcms->acpi_dev || !acpi_enabled) {
+    if (!pcms->acpi_dev || !x86_machine_is_acpi_enabled(X86_MACHINE(pcms))) {
         error_setg(&local_err,
                    "memory hotplug is not enabled: missing acpi device or acpi disabled");
         goto out;

hw/i386/pc_piix.c

@@ -275,7 +275,7 @@ static void pc_init1(MachineState *machine,
         pci_create_simple(pci_bus, piix3_devfn + 2, "piix3-usb-uhci");
     }
 
-    if (pcmc->pci_enabled && acpi_enabled) {
+    if (pcmc->pci_enabled && x86_machine_is_acpi_enabled(X86_MACHINE(pcms))) {
         DeviceState *piix4_pm;
 
         smi_irq = qemu_allocate_irq(pc_acpi_smi_interrupt, first_cpu, 0);

hw/i386/x86.c

@@ -904,11 +904,37 @@ static void x86_machine_set_smm(Object *obj, Visitor *v, const char *name,
     visit_type_OnOffAuto(v, name, &x86ms->smm, errp);
 }
 
+bool x86_machine_is_acpi_enabled(X86MachineState *x86ms)
+{
+    if (x86ms->acpi == ON_OFF_AUTO_OFF) {
+        return false;
+    }
+    return true;
+}
+
+static void x86_machine_get_acpi(Object *obj, Visitor *v, const char *name,
+                                 void *opaque, Error **errp)
+{
+    X86MachineState *x86ms = X86_MACHINE(obj);
+    OnOffAuto acpi = x86ms->acpi;
+
+    visit_type_OnOffAuto(v, name, &acpi, errp);
+}
+
+static void x86_machine_set_acpi(Object *obj, Visitor *v, const char *name,
+                                 void *opaque, Error **errp)
+{
+    X86MachineState *x86ms = X86_MACHINE(obj);
+
+    visit_type_OnOffAuto(v, name, &x86ms->acpi, errp);
+}
+
 static void x86_machine_initfn(Object *obj)
 {
     X86MachineState *x86ms = X86_MACHINE(obj);
 
     x86ms->smm = ON_OFF_AUTO_AUTO;
+    x86ms->acpi = ON_OFF_AUTO_AUTO;
     x86ms->max_ram_below_4g = 0; /* use default */
     x86ms->smp_dies = 1;
 }
@@ -937,6 +963,12 @@ static void x86_machine_class_init(ObjectClass *oc, void *data)
         NULL, NULL, &error_abort);
     object_class_property_set_description(oc, X86_MACHINE_SMM,
         "Enable SMM", &error_abort);
+
+    object_class_property_add(oc, X86_MACHINE_ACPI, "OnOffAuto",
+        x86_machine_get_acpi, x86_machine_set_acpi,
+        NULL, NULL, &error_abort);
+    object_class_property_set_description(oc, X86_MACHINE_ACPI,
+        "Enable ACPI", &error_abort);
 }
 
 static const TypeInfo x86_machine_info = {

hw/virtio/vhost-vsock.c

@@ -364,12 +364,16 @@ static void vhost_vsock_device_realize(DeviceState *dev, Error **errp)
 
 err_vhost_dev:
     vhost_dev_cleanup(&vsock->vhost_dev);
+    /* vhost_dev_cleanup() closes the vhostfd passed to vhost_dev_init() */
+    vhostfd = -1;
 err_virtio:
     virtio_delete_queue(vsock->recv_vq);
     virtio_delete_queue(vsock->trans_vq);
     virtio_delete_queue(vsock->event_vq);
     virtio_cleanup(vdev);
-    close(vhostfd);
+    if (vhostfd >= 0) {
+        close(vhostfd);
+    }
     return;
 }
 

hw/virtio/virtio-iommu.c

@@ -693,9 +693,12 @@ static void virtio_iommu_device_unrealize(DeviceState *dev, Error **errp)
     VirtIODevice *vdev = VIRTIO_DEVICE(dev);
     VirtIOIOMMU *s = VIRTIO_IOMMU(dev);
 
+    g_hash_table_destroy(s->as_by_busptr);
     g_tree_destroy(s->domains);
     g_tree_destroy(s->endpoints);
 
+    virtio_delete_queue(s->req_vq);
+    virtio_delete_queue(s->event_vq);
     virtio_cleanup(vdev);
 }
 

include/hw/acpi/acpi.h

@@ -181,7 +181,6 @@ void acpi_send_gpe_event(ACPIREGS *ar, qemu_irq irq,
 void acpi_update_sci(ACPIREGS *acpi_regs, qemu_irq irq);
 
 /* acpi.c */
-extern int acpi_enabled;
 extern char unsigned *acpi_tables;
 extern size_t acpi_tables_len;
 

include/hw/arm/virt.h

@@ -131,6 +131,7 @@ typedef struct {
     bool highmem_ecam;
     bool its;
     bool virt;
+    OnOffAuto acpi;
     VirtGICType gic_version;
     VirtIOMMUType iommu;
     uint16_t virtio_iommu_bdf;
@@ -163,6 +164,7 @@ typedef struct {
     OBJECT_CLASS_CHECK(VirtMachineClass, klass, TYPE_VIRT_MACHINE)
 
 void virt_acpi_setup(VirtMachineState *vms);
+bool virt_is_acpi_enabled(VirtMachineState *vms);
 
 /* Return the number of used redistributor regions  */
 static inline int virt_gicv3_redist_region_count(VirtMachineState *vms)

include/hw/i386/x86.h

@@ -64,6 +64,7 @@ typedef struct {
     unsigned smp_dies;
 
     OnOffAuto smm;
+    OnOffAuto acpi;
 
     /*
      * Address space used by IOAPIC device. All IOAPIC interrupts
@@ -74,6 +75,7 @@ typedef struct {
 
 #define X86_MACHINE_MAX_RAM_BELOW_4G "max-ram-below-4g"
 #define X86_MACHINE_SMM              "smm"
+#define X86_MACHINE_ACPI             "acpi"
 
 #define TYPE_X86_MACHINE   MACHINE_TYPE_NAME("x86")
 #define X86_MACHINE(obj) \
@@ -104,6 +106,7 @@ void x86_load_linux(X86MachineState *x86ms,
                     bool linuxboot_dma_enabled);
 
 bool x86_machine_is_smm_enabled(X86MachineState *x86ms);
+bool x86_machine_is_acpi_enabled(X86MachineState *x86ms);
 
 /* Global System Interrupts */
 

include/hw/virtio/vhost-user-blk.h

@@ -38,7 +38,6 @@ typedef struct VHostUserBlk {
     VhostUserState vhost_user;
     struct vhost_virtqueue *vhost_vqs;
     VirtQueue **virtqs;
-    guint watch;
     bool connected;
 } VHostUserBlk;
 

scripts/checkpatch.pl

@@ -35,6 +35,8 @@ my $summary_file = 0;
 my $root;
 my %debug;
 my $help = 0;
+my $acpi_testexpected;
+my $acpi_nontestexpected;
 
 sub help {
 	my ($exitcode) = @_;
@@ -1256,6 +1258,27 @@ sub WARN {
 	}
 }
 
+# According to tests/qtest/bios-tables-test.c: do not
+# change expected file in the same commit with adding test
+sub checkfilename {
+	my ($name) = @_;
+	if ($name =~ m#^tests/data/acpi/# and
+		# make exception for a shell script that rebuilds the files
+		not $name =~ m#^\.sh$# or
+		$name =~ m#^tests/qtest/bios-tables-test-allowed-diff.h$#) {
+		$acpi_testexpected = $name;
+	} else {
+		$acpi_nontestexpected = $name;
+	}
+	if (defined $acpi_testexpected and defined $acpi_nontestexpected) {
+		ERROR("Do not add expected files together with tests, " .
+		      "follow instructions in " .
+		      "tests/qtest/bios-tables-test.c: both " .
+		      $acpi_testexpected . " and " .
+		      $acpi_nontestexpected . " found\n");
+	}
+}
+
 sub process {
 	my $filename = shift;
 
@@ -1431,9 +1454,11 @@ sub process {
 		if ($line =~ /^diff --git.*?(\S+)$/) {
 			$realfile = $1;
 			$realfile =~ s@^([^/]*)/@@ if (!$file);
+	                checkfilename($realfile);
 		} elsif ($line =~ /^\+\+\+\s+(\S+)/) {
 			$realfile = $1;
 			$realfile =~ s@^([^/]*)/@@ if (!$file);
+	                checkfilename($realfile);
 
 			$p1_prefix = $1;
 			if (!$file && $tree && $p1_prefix ne '' &&

softmmu/vl.c

@@ -144,7 +144,6 @@ static Chardev **serial_hds;
 Chardev *parallel_hds[MAX_PARALLEL_PORTS];
 int win2k_install_hack = 0;
 int singlestep = 0;
-int acpi_enabled = 1;
 int no_hpet = 0;
 int fd_bootchk = 1;
 static int no_reboot;
@@ -3516,7 +3515,8 @@ void qemu_init(int argc, char **argv, char **envp)
                 vnc_parse(optarg, &error_fatal);
                 break;
             case QEMU_OPTION_no_acpi:
-                acpi_enabled = 0;
+                olist = qemu_find_opts("machine");
+                qemu_opts_parse_noisily(olist, "acpi=off", false);
                 break;
             case QEMU_OPTION_no_hpet:
                 no_hpet = 1;