diff options
Diffstat (limited to 'hw/i386')
| -rw-r--r-- | hw/i386/pc_piix.c | 3 | ||||
| -rw-r--r-- | hw/i386/xen/xen_platform.c | 48 |
2 files changed, 48 insertions, 3 deletions
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index 578e537b35..0e45521e74 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -246,8 +246,7 @@ static void pc_init1(MachineState *machine, if (pcmc->pci_enabled) { PCIDevice *dev; - dev = pci_create_simple(pci_bus, piix3_devfn + 1, - xen_enabled() ? "piix3-ide-xen" : "piix3-ide"); + dev = pci_create_simple(pci_bus, piix3_devfn + 1, "piix3-ide"); pci_ide_create_devs(dev); idebus[0] = qdev_get_child_bus(&dev->qdev, "ide.0"); idebus[1] = qdev_get_child_bus(&dev->qdev, "ide.1"); diff --git a/hw/i386/xen/xen_platform.c b/hw/i386/xen/xen_platform.c index 72028449ba..a64265cca0 100644 --- a/hw/i386/xen/xen_platform.c +++ b/hw/i386/xen/xen_platform.c @@ -26,6 +26,7 @@ #include "qemu/osdep.h" #include "qapi/error.h" #include "hw/ide.h" +#include "hw/ide/pci.h" #include "hw/pci/pci.h" #include "hw/xen/xen_common.h" #include "migration/vmstate.h" @@ -134,6 +135,51 @@ static void pci_unplug_nics(PCIBus *bus) pci_for_each_device(bus, 0, unplug_nic, NULL); } +/* + * The Xen HVM unplug protocol [1] specifies a mechanism to allow guests to + * request unplug of 'aux' disks (which is stated to mean all IDE disks, + * except the primary master). + * + * NOTE: The semantics of what happens if unplug of all disks and 'aux' disks + * is simultaneously requested is not clear. The implementation assumes + * that an 'all' request overrides an 'aux' request. + * + * [1] https://xenbits.xen.org/gitweb/?p=xen.git;a=blob;f=docs/misc/hvm-emulated-unplug.pandoc + */ +static void pci_xen_ide_unplug(DeviceState *dev, bool aux) +{ + PCIIDEState *pci_ide; + int i; + IDEDevice *idedev; + IDEBus *idebus; + BlockBackend *blk; + + pci_ide = PCI_IDE(dev); + + for (i = aux ? 1 : 0; i < 4; i++) { + idebus = &pci_ide->bus[i / 2]; + blk = idebus->ifs[i % 2].blk; + + if (blk && idebus->ifs[i % 2].drive_kind != IDE_CD) { + if (!(i % 2)) { + idedev = idebus->master; + } else { + idedev = idebus->slave; + } + + blk_drain(blk); + blk_flush(blk); + + blk_detach_dev(blk, DEVICE(idedev)); + idebus->ifs[i % 2].blk = NULL; + idedev->conf.blk = NULL; + monitor_remove_blk(blk); + blk_unref(blk); + } + } + qdev_reset_all(dev); +} + static void unplug_disks(PCIBus *b, PCIDevice *d, void *opaque) { uint32_t flags = *(uint32_t *)opaque; @@ -147,7 +193,7 @@ static void unplug_disks(PCIBus *b, PCIDevice *d, void *opaque) switch (pci_get_word(d->config + PCI_CLASS_DEVICE)) { case PCI_CLASS_STORAGE_IDE: - pci_piix3_xen_ide_unplug(DEVICE(d), aux); + pci_xen_ide_unplug(DEVICE(d), aux); break; case PCI_CLASS_STORAGE_SCSI: |