From 5af2ae2305143f1805a696f9554231e1fc246edc Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Sun, 5 Jul 2015 09:19:15 +1000 Subject: [PATCH 1/7] pci: Fix pci_device_iommu_address_space() bus propagation he current code walks up the bus tree for an iommu, however it passes to the iommu_fn() callback the bus/devfn of the immediate child of the level where the callback was found, rather than the original bus/devfn where the search started from. This prevents iommu's like POWER8 (and in fact also Q35) to properly provide an address space for a subset of devices that aren't immediate children of the iommu. PCIe carries the originator bdfn acccross to the iommu on all DMA transactions, so we must be able to properly identify devices at all levels. This changes the function pci_device_iommu_address_space() to pass the original pointers to the iommu_fn() callback instead. Signed-off-by: Benjamin Herrenschmidt Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/pci/pci.c | 13 +++++-------- 1 file changed, 5 insertions(+), 8 deletions(-) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index 4700e95206..eba7ca25ad 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -2383,17 +2383,14 @@ static void pci_device_class_init(ObjectClass *klass, void *data) AddressSpace *pci_device_iommu_address_space(PCIDevice *dev) { PCIBus *bus = PCI_BUS(dev->bus); + PCIBus *iommu_bus = bus; - if (bus->iommu_fn) { - return bus->iommu_fn(bus, bus->iommu_opaque, dev->devfn); + while(iommu_bus && !iommu_bus->iommu_fn && iommu_bus->parent_dev) { + iommu_bus = PCI_BUS(iommu_bus->parent_dev->bus); } - - if (bus->parent_dev) { - /** We are ignoring the bus master DMA bit of the bridge - * as it would complicate things such as VFIO for no good reason */ - return pci_device_iommu_address_space(bus->parent_dev); + if (iommu_bus && iommu_bus->iommu_fn) { + return iommu_bus->iommu_fn(bus, iommu_bus->iommu_opaque, dev->devfn); } - return &address_space_memory; } From 91176e310527fac8414c417c093659e42e4564ea Mon Sep 17 00:00:00 2001 From: Eduardo Habkost Date: Mon, 17 Aug 2015 11:42:29 -0700 Subject: [PATCH 2/7] pc: Remove redundant arguments from xen_hvm_init() Remove arguments that can be found in PCMachineState. Signed-off-by: Eduardo Habkost Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/i386/pc_piix.c | 4 +--- hw/i386/pc_q35.c | 4 +--- include/hw/xen/xen.h | 4 ++-- xen-hvm-stub.c | 3 +-- xen-hvm.c | 25 ++++++++++++------------- 5 files changed, 17 insertions(+), 23 deletions(-) diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index b82921d367..117f8dc417 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -134,9 +134,7 @@ static void pc_init1(MachineState *machine) pcms->below_4g_mem_size = machine->ram_size; } - if (xen_enabled() && xen_hvm_init(&pcms->below_4g_mem_size, - &pcms->above_4g_mem_size, - &ram_memory) != 0) { + if (xen_enabled() && xen_hvm_init(pcms, &ram_memory) != 0) { fprintf(stderr, "xen hardware virtual machine initialisation failed\n"); exit(1); } diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index 7217cbf38b..4b38deee48 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -125,9 +125,7 @@ static void pc_q35_init(MachineState *machine) pcms->below_4g_mem_size = machine->ram_size; } - if (xen_enabled() && xen_hvm_init(&pcms->below_4g_mem_size, - &pcms->above_4g_mem_size, - &ram_memory) != 0) { + if (xen_enabled() && xen_hvm_init(pcms, &ram_memory) != 0) { fprintf(stderr, "xen hardware virtual machine initialisation failed\n"); exit(1); } diff --git a/include/hw/xen/xen.h b/include/hw/xen/xen.h index 4356af4560..e90931a508 100644 --- a/include/hw/xen/xen.h +++ b/include/hw/xen/xen.h @@ -10,6 +10,7 @@ #include "hw/irq.h" #include "qemu-common.h" +#include "qemu/typedefs.h" /* xen-machine.c */ enum xen_mode { @@ -38,8 +39,7 @@ qemu_irq *xen_interrupt_controller_init(void); void xenstore_store_pv_console_info(int i, struct CharDriverState *chr); #if defined(NEED_CPU_H) && !defined(CONFIG_USER_ONLY) -int xen_hvm_init(ram_addr_t *below_4g_mem_size, ram_addr_t *above_4g_mem_size, - MemoryRegion **ram_memory); +int xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory); void xen_ram_alloc(ram_addr_t ram_addr, ram_addr_t size, struct MemoryRegion *mr); void xen_modified_memory(ram_addr_t start, ram_addr_t length); diff --git a/xen-hvm-stub.c b/xen-hvm-stub.c index 46867d87d7..6a39425da0 100644 --- a/xen-hvm-stub.c +++ b/xen-hvm-stub.c @@ -47,8 +47,7 @@ void xen_modified_memory(ram_addr_t start, ram_addr_t length) { } -int xen_hvm_init(ram_addr_t *below_4g_mem_size, ram_addr_t *above_4g_mem_size, - MemoryRegion **ram_memory) +int xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory) { return 0; } diff --git a/xen-hvm.c b/xen-hvm.c index 040846236c..55bce3ae12 100644 --- a/xen-hvm.c +++ b/xen-hvm.c @@ -180,8 +180,7 @@ qemu_irq *xen_interrupt_controller_init(void) /* Memory Ops */ -static void xen_ram_init(ram_addr_t *below_4g_mem_size, - ram_addr_t *above_4g_mem_size, +static void xen_ram_init(PCMachineState *pcms, ram_addr_t ram_size, MemoryRegion **ram_memory_p) { MemoryRegion *sysmem = get_system_memory(); @@ -198,20 +197,20 @@ static void xen_ram_init(ram_addr_t *below_4g_mem_size, } if (ram_size >= user_lowmem) { - *above_4g_mem_size = ram_size - user_lowmem; - *below_4g_mem_size = user_lowmem; + pcms->above_4g_mem_size = ram_size - user_lowmem; + pcms->below_4g_mem_size = user_lowmem; } else { - *above_4g_mem_size = 0; - *below_4g_mem_size = ram_size; + pcms->above_4g_mem_size = 0; + pcms->below_4g_mem_size = ram_size; } - if (!*above_4g_mem_size) { + if (!pcms->above_4g_mem_size) { block_len = ram_size; } else { /* * Xen does not allocate the memory continuously, it keeps a * hole of the size computed above or passed in. */ - block_len = (1ULL << 32) + *above_4g_mem_size; + block_len = (1ULL << 32) + pcms->above_4g_mem_size; } memory_region_init_ram(&ram_memory, NULL, "xen.ram", block_len, &error_abort); @@ -229,12 +228,12 @@ static void xen_ram_init(ram_addr_t *below_4g_mem_size, */ memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo", &ram_memory, 0xc0000, - *below_4g_mem_size - 0xc0000); + pcms->below_4g_mem_size - 0xc0000); memory_region_add_subregion(sysmem, 0xc0000, &ram_lo); - if (*above_4g_mem_size > 0) { + if (pcms->above_4g_mem_size > 0) { memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi", &ram_memory, 0x100000000ULL, - *above_4g_mem_size); + pcms->above_4g_mem_size); memory_region_add_subregion(sysmem, 0x100000000ULL, &ram_hi); } } @@ -1159,7 +1158,7 @@ static void xen_wakeup_notifier(Notifier *notifier, void *data) } /* return 0 means OK, or -1 means critical issue -- will exit(1) */ -int xen_hvm_init(ram_addr_t *below_4g_mem_size, ram_addr_t *above_4g_mem_size, +int xen_hvm_init(PCMachineState *pcms, MemoryRegion **ram_memory) { int i, rc; @@ -1270,7 +1269,7 @@ int xen_hvm_init(ram_addr_t *below_4g_mem_size, ram_addr_t *above_4g_mem_size, /* Init RAM management */ xen_map_cache_init(xen_phys_offset_to_gaddr, state); - xen_ram_init(below_4g_mem_size, above_4g_mem_size, ram_size, ram_memory); + xen_ram_init(pcms, ram_size, ram_memory); qemu_add_vm_change_state_handler(xen_hvm_change_state_handler, state); From 95129d6fc9ead97155627a4ca0cfd37282883658 Mon Sep 17 00:00:00 2001 From: Cornelia Huck Date: Mon, 17 Aug 2015 11:48:29 +0200 Subject: [PATCH 3/7] virtio: avoid leading underscores for helpers Commit ef546f1275f6563e8934dd5e338d29d9f9909ca6 ("virtio: add feature checking helpers") introduced a helper __virtio_has_feature. We don't want to use reserved identifiers, though, so let's rename __virtio_has_feature to virtio_has_feature and virtio_has_feature to virtio_vdev_has_feature. Signed-off-by: Cornelia Huck Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/block/virtio-blk.c | 7 ++++--- hw/char/virtio-serial-bus.c | 2 +- hw/net/vhost_net.c | 2 +- hw/net/virtio-net.c | 31 ++++++++++++++++--------------- hw/scsi/virtio-scsi.c | 8 ++++---- hw/virtio/dataplane/vring.c | 10 +++++----- hw/virtio/vhost.c | 4 ++-- hw/virtio/virtio-balloon.c | 2 +- hw/virtio/virtio.c | 14 +++++++------- include/hw/virtio/virtio-access.h | 2 +- include/hw/virtio/virtio.h | 11 ++++++----- 11 files changed, 48 insertions(+), 45 deletions(-) diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index 1556c9cf5a..f9301ae541 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -731,7 +731,7 @@ static uint64_t virtio_blk_get_features(VirtIODevice *vdev, uint64_t features, virtio_add_feature(&features, VIRTIO_BLK_F_GEOMETRY); virtio_add_feature(&features, VIRTIO_BLK_F_TOPOLOGY); virtio_add_feature(&features, VIRTIO_BLK_F_BLK_SIZE); - if (__virtio_has_feature(features, VIRTIO_F_VERSION_1)) { + if (virtio_has_feature(features, VIRTIO_F_VERSION_1)) { if (s->conf.scsi) { error_setg(errp, "Please set scsi=off for virtio-blk devices in order to use virtio 1.0"); return 0; @@ -782,10 +782,11 @@ static void virtio_blk_set_status(VirtIODevice *vdev, uint8_t status) * * s->blk would erroneously be placed in writethrough mode. */ - if (!virtio_has_feature(vdev, VIRTIO_BLK_F_CONFIG_WCE)) { + if (!virtio_vdev_has_feature(vdev, VIRTIO_BLK_F_CONFIG_WCE)) { aio_context_acquire(blk_get_aio_context(s->blk)); blk_set_enable_write_cache(s->blk, - virtio_has_feature(vdev, VIRTIO_BLK_F_WCE)); + virtio_vdev_has_feature(vdev, + VIRTIO_BLK_F_WCE)); aio_context_release(blk_get_aio_context(s->blk)); } } diff --git a/hw/char/virtio-serial-bus.c b/hw/char/virtio-serial-bus.c index bc56f5d520..be97058712 100644 --- a/hw/char/virtio-serial-bus.c +++ b/hw/char/virtio-serial-bus.c @@ -76,7 +76,7 @@ static VirtIOSerialPort *find_port_by_name(char *name) static bool use_multiport(VirtIOSerial *vser) { VirtIODevice *vdev = VIRTIO_DEVICE(vser); - return virtio_has_feature(vdev, VIRTIO_CONSOLE_F_MULTIPORT); + return virtio_vdev_has_feature(vdev, VIRTIO_CONSOLE_F_MULTIPORT); } static size_t write_to_port(VirtIOSerialPort *port, diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c index 5c1d11f517..1d76b94c84 100644 --- a/hw/net/vhost_net.c +++ b/hw/net/vhost_net.c @@ -197,7 +197,7 @@ static int vhost_net_set_vnet_endian(VirtIODevice *dev, NetClientState *peer, { int r = 0; - if (virtio_has_feature(dev, VIRTIO_F_VERSION_1) || + if (virtio_vdev_has_feature(dev, VIRTIO_F_VERSION_1) || (virtio_legacy_is_cross_endian(dev) && !virtio_is_big_endian(dev))) { r = qemu_set_vnet_le(peer, set); if (r) { diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 8d28e45afc..f72eebff2b 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -86,8 +86,8 @@ static void virtio_net_set_config(VirtIODevice *vdev, const uint8_t *config) memcpy(&netcfg, config, n->config_size); - if (!virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_MAC_ADDR) && - !virtio_has_feature(vdev, VIRTIO_F_VERSION_1) && + if (!virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_MAC_ADDR) && + !virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1) && memcmp(netcfg.mac, n->mac, ETH_ALEN)) { memcpy(n->mac, netcfg.mac, ETH_ALEN); qemu_format_nic_info_str(qemu_get_queue(n->nic), n->mac); @@ -304,7 +304,7 @@ static RxFilterInfo *virtio_net_query_rxfilter(NetClientState *nc) info->multicast_table = str_list; info->vlan_table = get_vlan_table(n); - if (!virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_VLAN)) { + if (!virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VLAN)) { info->vlan = RX_STATE_ALL; } else if (!info->vlan_table) { info->vlan = RX_STATE_NONE; @@ -529,13 +529,13 @@ static void virtio_net_set_features(VirtIODevice *vdev, uint64_t features) int i; virtio_net_set_multiqueue(n, - __virtio_has_feature(features, VIRTIO_NET_F_MQ)); + virtio_has_feature(features, VIRTIO_NET_F_MQ)); virtio_net_set_mrg_rx_bufs(n, - __virtio_has_feature(features, - VIRTIO_NET_F_MRG_RXBUF), - __virtio_has_feature(features, - VIRTIO_F_VERSION_1)); + virtio_has_feature(features, + VIRTIO_NET_F_MRG_RXBUF), + virtio_has_feature(features, + VIRTIO_F_VERSION_1)); if (n->has_vnet_hdr) { n->curr_guest_offloads = @@ -552,7 +552,7 @@ static void virtio_net_set_features(VirtIODevice *vdev, uint64_t features) vhost_net_ack_features(get_vhost_net(nc->peer), features); } - if (__virtio_has_feature(features, VIRTIO_NET_F_CTRL_VLAN)) { + if (virtio_has_feature(features, VIRTIO_NET_F_CTRL_VLAN)) { memset(n->vlans, 0, MAX_VLAN >> 3); } else { memset(n->vlans, 0xff, MAX_VLAN >> 3); @@ -599,7 +599,7 @@ static int virtio_net_handle_offloads(VirtIONet *n, uint8_t cmd, uint64_t offloads; size_t s; - if (!virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) { + if (!virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) { return VIRTIO_NET_ERR; } @@ -1449,7 +1449,7 @@ static void virtio_net_save_device(VirtIODevice *vdev, QEMUFile *f) } } - if (virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) { + if (virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) { qemu_put_be64(f, n->curr_guest_offloads); } } @@ -1475,7 +1475,8 @@ static int virtio_net_load_device(VirtIODevice *vdev, QEMUFile *f, n->vqs[0].tx_waiting = qemu_get_be32(f); virtio_net_set_mrg_rx_bufs(n, qemu_get_be32(f), - virtio_has_feature(vdev, VIRTIO_F_VERSION_1)); + virtio_vdev_has_feature(vdev, + VIRTIO_F_VERSION_1)); if (version_id >= 3) n->status = qemu_get_be16(f); @@ -1558,7 +1559,7 @@ static int virtio_net_load_device(VirtIODevice *vdev, QEMUFile *f, } } - if (virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) { + if (virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS)) { n->curr_guest_offloads = qemu_get_be64(f); } else { n->curr_guest_offloads = virtio_net_supported_guest_offloads(n); @@ -1585,8 +1586,8 @@ static int virtio_net_load_device(VirtIODevice *vdev, QEMUFile *f, qemu_get_subqueue(n->nic, i)->link_down = link_down; } - if (virtio_has_feature(vdev, VIRTIO_NET_F_GUEST_ANNOUNCE) && - virtio_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ)) { + if (virtio_vdev_has_feature(vdev, VIRTIO_NET_F_GUEST_ANNOUNCE) && + virtio_vdev_has_feature(vdev, VIRTIO_NET_F_CTRL_VQ)) { n->announce_counter = SELF_ANNOUNCE_ROUNDS; timer_mod(n->announce_timer, qemu_clock_get_ms(QEMU_CLOCK_VIRTUAL)); } diff --git a/hw/scsi/virtio-scsi.c b/hw/scsi/virtio-scsi.c index a8bb1c66f9..1c33f146a7 100644 --- a/hw/scsi/virtio-scsi.c +++ b/hw/scsi/virtio-scsi.c @@ -145,7 +145,7 @@ static int virtio_scsi_parse_req(VirtIOSCSIReq *req, * * TODO: always disable this workaround for virtio 1.0 devices. */ - if (!virtio_has_feature(vdev, VIRTIO_F_ANY_LAYOUT)) { + if (!virtio_vdev_has_feature(vdev, VIRTIO_F_ANY_LAYOUT)) { if (req->elem.out_num) { req_size = req->elem.out_sg[0].iov_len; } @@ -759,7 +759,7 @@ static void virtio_scsi_change(SCSIBus *bus, SCSIDevice *dev, SCSISense sense) VirtIOSCSI *s = container_of(bus, VirtIOSCSI, bus); VirtIODevice *vdev = VIRTIO_DEVICE(s); - if (virtio_has_feature(vdev, VIRTIO_SCSI_F_CHANGE) && + if (virtio_vdev_has_feature(vdev, VIRTIO_SCSI_F_CHANGE) && dev->type != TYPE_ROM) { virtio_scsi_push_event(s, dev, VIRTIO_SCSI_T_PARAM_CHANGE, sense.asc | (sense.ascq << 8)); @@ -783,7 +783,7 @@ static void virtio_scsi_hotplug(HotplugHandler *hotplug_dev, DeviceState *dev, aio_context_release(s->ctx); } - if (virtio_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG)) { + if (virtio_vdev_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG)) { virtio_scsi_push_event(s, sd, VIRTIO_SCSI_T_TRANSPORT_RESET, VIRTIO_SCSI_EVT_RESET_RESCAN); @@ -797,7 +797,7 @@ static void virtio_scsi_hotunplug(HotplugHandler *hotplug_dev, DeviceState *dev, VirtIOSCSI *s = VIRTIO_SCSI(vdev); SCSIDevice *sd = SCSI_DEVICE(dev); - if (virtio_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG)) { + if (virtio_vdev_has_feature(vdev, VIRTIO_SCSI_F_HOTPLUG)) { virtio_scsi_push_event(s, sd, VIRTIO_SCSI_T_TRANSPORT_RESET, VIRTIO_SCSI_EVT_RESET_REMOVED); diff --git a/hw/virtio/dataplane/vring.c b/hw/virtio/dataplane/vring.c index 07fd69c69e..fece83a829 100644 --- a/hw/virtio/dataplane/vring.c +++ b/hw/virtio/dataplane/vring.c @@ -105,7 +105,7 @@ void vring_teardown(Vring *vring, VirtIODevice *vdev, int n) /* Disable guest->host notifies */ void vring_disable_notification(VirtIODevice *vdev, Vring *vring) { - if (!virtio_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { + if (!virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { vring_set_used_flags(vdev, vring, VRING_USED_F_NO_NOTIFY); } } @@ -116,7 +116,7 @@ void vring_disable_notification(VirtIODevice *vdev, Vring *vring) */ bool vring_enable_notification(VirtIODevice *vdev, Vring *vring) { - if (virtio_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { + if (virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { vring_avail_event(&vring->vr) = vring->vr.avail->idx; } else { vring_clear_used_flags(vdev, vring, VRING_USED_F_NO_NOTIFY); @@ -135,12 +135,12 @@ bool vring_should_notify(VirtIODevice *vdev, Vring *vring) * interrupts. */ smp_mb(); - if (virtio_has_feature(vdev, VIRTIO_F_NOTIFY_ON_EMPTY) && + if (virtio_vdev_has_feature(vdev, VIRTIO_F_NOTIFY_ON_EMPTY) && unlikely(!vring_more_avail(vdev, vring))) { return true; } - if (!virtio_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { + if (!virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { return !(vring_get_avail_flags(vdev, vring) & VRING_AVAIL_F_NO_INTERRUPT); } @@ -402,7 +402,7 @@ int vring_pop(VirtIODevice *vdev, Vring *vring, /* On success, increment avail index. */ vring->last_avail_idx++; - if (virtio_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { + if (virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { vring_avail_event(&vring->vr) = virtio_tswap16(vdev, vring->last_avail_idx); } diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c index 2712c6fc0a..a08c36bb45 100644 --- a/hw/virtio/vhost.c +++ b/hw/virtio/vhost.c @@ -742,7 +742,7 @@ static int vhost_virtqueue_start(struct vhost_dev *dev, return -errno; } - if (!virtio_has_feature(vdev, VIRTIO_F_VERSION_1) && + if (!virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1) && virtio_legacy_is_cross_endian(vdev)) { r = vhost_virtqueue_set_vring_endian_legacy(dev, virtio_is_big_endian(vdev), @@ -839,7 +839,7 @@ static void vhost_virtqueue_stop(struct vhost_dev *dev, /* In the cross-endian case, we need to reset the vring endianness to * native as legacy devices expect so by default. */ - if (!virtio_has_feature(vdev, VIRTIO_F_VERSION_1) && + if (!virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1) && virtio_legacy_is_cross_endian(vdev)) { r = vhost_virtqueue_set_vring_endian_legacy(dev, !virtio_is_big_endian(vdev), diff --git a/hw/virtio/virtio-balloon.c b/hw/virtio/virtio-balloon.c index 3577b7af91..c419b17143 100644 --- a/hw/virtio/virtio-balloon.c +++ b/hw/virtio/virtio-balloon.c @@ -70,7 +70,7 @@ static inline void reset_stats(VirtIOBalloon *dev) static bool balloon_stats_supported(const VirtIOBalloon *s) { VirtIODevice *vdev = VIRTIO_DEVICE(s); - return virtio_has_feature(vdev, VIRTIO_BALLOON_F_STATS_VQ); + return virtio_vdev_has_feature(vdev, VIRTIO_BALLOON_F_STATS_VQ); } static bool balloon_stats_enabled(const VirtIOBalloon *s) diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c index 788b556a74..0832db9935 100644 --- a/hw/virtio/virtio.c +++ b/hw/virtio/virtio.c @@ -220,7 +220,7 @@ static inline void vring_set_avail_event(VirtQueue *vq, uint16_t val) void virtio_queue_set_notification(VirtQueue *vq, int enable) { vq->notification = enable; - if (virtio_has_feature(vq->vdev, VIRTIO_RING_F_EVENT_IDX)) { + if (virtio_vdev_has_feature(vq->vdev, VIRTIO_RING_F_EVENT_IDX)) { vring_set_avail_event(vq, vring_avail_idx(vq)); } else if (enable) { vring_used_flags_unset_bit(vq, VRING_USED_F_NO_NOTIFY); @@ -471,7 +471,7 @@ int virtqueue_pop(VirtQueue *vq, VirtQueueElement *elem) max = vq->vring.num; i = head = virtqueue_get_head(vq, vq->last_avail_idx++); - if (virtio_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { + if (virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { vring_set_avail_event(vq, vq->last_avail_idx); } @@ -560,7 +560,7 @@ int virtio_set_status(VirtIODevice *vdev, uint8_t val) VirtioDeviceClass *k = VIRTIO_DEVICE_GET_CLASS(vdev); trace_virtio_set_status(vdev, val); - if (virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) { + if (virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) { if (!(vdev->status & VIRTIO_CONFIG_S_FEATURES_OK) && val & VIRTIO_CONFIG_S_FEATURES_OK) { int ret = virtio_validate_features(vdev); @@ -898,7 +898,7 @@ void virtio_queue_set_align(VirtIODevice *vdev, int n, int align) VirtioBusClass *k = VIRTIO_BUS_GET_CLASS(qbus); /* virtio-1 compliant devices cannot change the alignment */ - if (virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) { + if (virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) { error_report("tried to modify queue alignment for virtio-1 device"); return; } @@ -993,12 +993,12 @@ static bool vring_notify(VirtIODevice *vdev, VirtQueue *vq) /* We need to expose used array entries before checking used event. */ smp_mb(); /* Always notify when queue is empty (when feature acknowledge) */ - if (virtio_has_feature(vdev, VIRTIO_F_NOTIFY_ON_EMPTY) && + if (virtio_vdev_has_feature(vdev, VIRTIO_F_NOTIFY_ON_EMPTY) && !vq->inuse && vring_avail_idx(vq) == vq->last_avail_idx) { return true; } - if (!virtio_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { + if (!virtio_vdev_has_feature(vdev, VIRTIO_RING_F_EVENT_IDX)) { return !(vring_avail_flags(vq) & VRING_AVAIL_F_NO_INTERRUPT); } @@ -1035,7 +1035,7 @@ static bool virtio_device_endian_needed(void *opaque) VirtIODevice *vdev = opaque; assert(vdev->device_endian != VIRTIO_DEVICE_ENDIAN_UNKNOWN); - if (!virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) { + if (!virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) { return vdev->device_endian != virtio_default_endian(); } /* Devices conforming to VIRTIO 1.0 or later are always LE. */ diff --git a/include/hw/virtio/virtio-access.h b/include/hw/virtio/virtio-access.h index 1ec1dfdb6c..8aec843c8f 100644 --- a/include/hw/virtio/virtio-access.h +++ b/include/hw/virtio/virtio-access.h @@ -19,7 +19,7 @@ static inline bool virtio_access_is_big_endian(VirtIODevice *vdev) { - if (virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) { + if (virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) { /* Devices conforming to VIRTIO 1.0 or later are always LE. */ return false; } diff --git a/include/hw/virtio/virtio.h b/include/hw/virtio/virtio.h index cccae89d83..6201ee8ce0 100644 --- a/include/hw/virtio/virtio.h +++ b/include/hw/virtio/virtio.h @@ -261,26 +261,27 @@ static inline void virtio_clear_feature(uint64_t *features, unsigned int fbit) *features &= ~(1ULL << fbit); } -static inline bool __virtio_has_feature(uint64_t features, unsigned int fbit) +static inline bool virtio_has_feature(uint64_t features, unsigned int fbit) { assert(fbit < 64); return !!(features & (1ULL << fbit)); } -static inline bool virtio_has_feature(VirtIODevice *vdev, unsigned int fbit) +static inline bool virtio_vdev_has_feature(VirtIODevice *vdev, + unsigned int fbit) { - return __virtio_has_feature(vdev->guest_features, fbit); + return virtio_has_feature(vdev->guest_features, fbit); } static inline bool virtio_host_has_feature(VirtIODevice *vdev, unsigned int fbit) { - return __virtio_has_feature(vdev->host_features, fbit); + return virtio_has_feature(vdev->host_features, fbit); } static inline bool virtio_is_big_endian(VirtIODevice *vdev) { - if (!virtio_has_feature(vdev, VIRTIO_F_VERSION_1)) { + if (!virtio_vdev_has_feature(vdev, VIRTIO_F_VERSION_1)) { assert(vdev->device_endian != VIRTIO_DEVICE_ENDIAN_UNKNOWN); return vdev->device_endian == VIRTIO_DEVICE_ENDIAN_BIG; } From 9372e3f5678cdd86e1ddfb957d9da4b1889a0dd0 Mon Sep 17 00:00:00 2001 From: "Richard W.M. Jones" Date: Wed, 2 Sep 2015 20:03:38 +0100 Subject: [PATCH 4/7] acpi: Remove unused definition. Signed-off-by: Richard W.M. Jones Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/hw/acpi/aml-build.h | 1 - 1 file changed, 1 deletion(-) diff --git a/include/hw/acpi/aml-build.h b/include/hw/acpi/aml-build.h index e3afa13678..1b632dc542 100644 --- a/include/hw/acpi/aml-build.h +++ b/include/hw/acpi/aml-build.h @@ -9,7 +9,6 @@ /* Reserve RAM space for tables: add another order of magnitude. */ #define ACPI_BUILD_TABLE_MAX_SIZE 0x200000 -#define ACPI_BUILD_APPNAME "Bochs" #define ACPI_BUILD_APPNAME6 "BOCHS " #define ACPI_BUILD_APPNAME4 "BXPC" From 3385e8e2640e5c38582f6e8413042bd23d97c640 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Mon, 7 Sep 2015 13:55:31 +0200 Subject: [PATCH 5/7] pc: memhotplug: fix incorrectly set reserved-memory-end reserved-memory-end tells firmware address from which it could start treating memory as PCI address space and map PCI BARs after it to avoid collisions with RAM. Currently it is incorrectly pointing to address where hotplugged memory range starts which could redirect hotplugged RAM accesses to PCI BARs when firmware maps them over RAM or viceverse. Fix this by pointing reserved-memory-end to the end of memory hotplug area. Signed-off-by: Igor Mammedov Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin Reviewed-by: Eduardo Habkost --- hw/i386/pc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 9f2924e5df..354e1b3157 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1412,7 +1412,9 @@ FWCfgState *pc_memory_init(PCMachineState *pcms, if (guest_info->has_reserved_memory && pcms->hotplug_memory.base) { uint64_t *val = g_malloc(sizeof(*val)); - *val = cpu_to_le64(ROUND_UP(pcms->hotplug_memory.base, 0x1ULL << 30)); + uint64_t res_mem_end = pcms->hotplug_memory.base + + memory_region_size(&pcms->hotplug_memory.mr); + *val = cpu_to_le64(ROUND_UP(res_mem_end, 0x1ULL << 30)); fw_cfg_add_file(fw_cfg, "etc/reserved-memory-end", val, sizeof(*val)); } From 2f8b50083b321e470ef8e2502910ade40cbfa020 Mon Sep 17 00:00:00 2001 From: Igor Mammedov Date: Mon, 7 Sep 2015 13:55:32 +0200 Subject: [PATCH 6/7] pc: memhotplug: keep reserved-memory-end broken on 2.4 and earlier machines it will prevent guests on old machines from seeing inconsistent memory mapping in firmware/ACPI views. Signed-off-by: Igor Mammedov Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin Reviewed-by: Eduardo Habkost --- hw/i386/pc.c | 8 ++++++-- hw/i386/pc_piix.c | 2 ++ hw/i386/pc_q35.c | 2 ++ include/hw/i386/pc.h | 1 + 4 files changed, 11 insertions(+), 2 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 354e1b3157..b5107f7c58 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1412,8 +1412,12 @@ FWCfgState *pc_memory_init(PCMachineState *pcms, if (guest_info->has_reserved_memory && pcms->hotplug_memory.base) { uint64_t *val = g_malloc(sizeof(*val)); - uint64_t res_mem_end = pcms->hotplug_memory.base + - memory_region_size(&pcms->hotplug_memory.mr); + PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms); + uint64_t res_mem_end = pcms->hotplug_memory.base; + + if (!pcmc->broken_reserved_end) { + res_mem_end += memory_region_size(&pcms->hotplug_memory.mr); + } *val = cpu_to_le64(ROUND_UP(res_mem_end, 0x1ULL << 30)); fw_cfg_add_file(fw_cfg, "etc/reserved-memory-end", val, sizeof(*val)); } diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index 117f8dc417..eab39fc098 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -449,7 +449,9 @@ static void pc_i440fx_machine_options(MachineClass *m) static void pc_i440fx_2_4_machine_options(MachineClass *m) { + PCMachineClass *pcmc = PC_MACHINE_CLASS(m); pc_i440fx_machine_options(m); + pcmc->broken_reserved_end = true; m->default_machine_opts = "firmware=bios-256k.bin"; m->default_display = "std"; m->alias = "pc"; diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c index 4b38deee48..11601ab005 100644 --- a/hw/i386/pc_q35.c +++ b/hw/i386/pc_q35.c @@ -368,7 +368,9 @@ static void pc_q35_machine_options(MachineClass *m) static void pc_q35_2_4_machine_options(MachineClass *m) { + PCMachineClass *pcmc = PC_MACHINE_CLASS(m); pc_q35_machine_options(m); + pcmc->broken_reserved_end = true; m->default_machine_opts = "firmware=bios-256k.bin"; m->default_display = "std"; m->no_floppy = 1; diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index d0cad87d21..ff0b48bf58 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -59,6 +59,7 @@ struct PCMachineClass { MachineClass parent_class; /*< public >*/ + bool broken_reserved_end; HotplugHandler *(*get_hotplug_handler)(MachineState *machine, DeviceState *dev); }; From 0f288f854b96f56247e38f4207f71647133f0184 Mon Sep 17 00:00:00 2001 From: Laszlo Ersek Date: Tue, 1 Sep 2015 23:33:23 +0200 Subject: [PATCH 7/7] hw/pci: fix pci_update_mappings() trace events The current trace prototypes and (matching) trace calls lead to "unorthodox" PCI BDF notation in at least the stderr trace backend. For example, the four BARs of a QXL video card at 00:01.0 (bus 0, slot 1, function 0) are traced like this (PID and timestamps removed): pci_update_mappings_add d=0x7f14a73bf890 00:00.1 0,0x84000000+0x4000000 pci_update_mappings_add d=0x7f14a73bf890 00:00.1 1,0x80000000+0x4000000 pci_update_mappings_add d=0x7f14a73bf890 00:00.1 2,0x88200000+0x2000 pci_update_mappings_add d=0x7f14a73bf890 00:00.1 3,0xd060+0x20 The slot and function values are in reverse order. Stick with the conventional BDF notation. Cc: "Michael S. Tsirkin" Cc: Don Koch Cc: qemu-trivial@nongnu.org Fixes: 7828d75045 Signed-off-by: Laszlo Ersek Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- hw/pci/pci.c | 4 ++-- trace-events | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/hw/pci/pci.c b/hw/pci/pci.c index eba7ca25ad..ccea628209 100644 --- a/hw/pci/pci.c +++ b/hw/pci/pci.c @@ -1154,16 +1154,16 @@ static void pci_update_mappings(PCIDevice *d) /* now do the real mapping */ if (r->addr != PCI_BAR_UNMAPPED) { trace_pci_update_mappings_del(d, pci_bus_num(d->bus), - PCI_FUNC(d->devfn), PCI_SLOT(d->devfn), + PCI_FUNC(d->devfn), i, r->addr, r->size); memory_region_del_subregion(r->address_space, r->memory); } r->addr = new_addr; if (r->addr != PCI_BAR_UNMAPPED) { trace_pci_update_mappings_add(d, pci_bus_num(d->bus), - PCI_FUNC(d->devfn), PCI_SLOT(d->devfn), + PCI_FUNC(d->devfn), i, r->addr, r->size); memory_region_add_subregion_overlap(r->address_space, r->addr, r->memory, 1); diff --git a/trace-events b/trace-events index 0a82f0c1f2..1684a9530f 100644 --- a/trace-events +++ b/trace-events @@ -1303,8 +1303,8 @@ spapr_pci_lsi_set(const char *busname, int pin, uint32_t irq) "%s PIN%d IRQ %u" spapr_pci_msi_retry(unsigned config_addr, unsigned req_num, unsigned max_irqs) "Guest device at %x asked %u, have only %u" # hw/pci/pci.c -pci_update_mappings_del(void *d, uint32_t bus, uint32_t func, uint32_t slot, int bar, uint64_t addr, uint64_t size) "d=%p %02x:%02x.%x %d,%#"PRIx64"+%#"PRIx64 -pci_update_mappings_add(void *d, uint32_t bus, uint32_t func, uint32_t slot, int bar, uint64_t addr, uint64_t size) "d=%p %02x:%02x.%x %d,%#"PRIx64"+%#"PRIx64 +pci_update_mappings_del(void *d, uint32_t bus, uint32_t slot, uint32_t func, int bar, uint64_t addr, uint64_t size) "d=%p %02x:%02x.%x %d,%#"PRIx64"+%#"PRIx64 +pci_update_mappings_add(void *d, uint32_t bus, uint32_t slot, uint32_t func, int bar, uint64_t addr, uint64_t size) "d=%p %02x:%02x.%x %d,%#"PRIx64"+%#"PRIx64 # hw/net/pcnet.c pcnet_s_reset(void *s) "s=%p"