[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH] hw/net: fix vmxnet3 live migration
From: |
Sukrit Bhatnagar |
Subject: |
Re: [Qemu-devel] [PATCH] hw/net: fix vmxnet3 live migration |
Date: |
Fri, 5 Jul 2019 16:44:10 +0530 |
On Fri, 5 Jul 2019 at 16:29, Dmitry Fleytman <address@hidden> wrote:
>
>
> > On 5 Jul 2019, at 4:07, Marcel Apfelbaum <address@hidden> wrote:
> >
> > At some point vmxnet3 live migration stopped working and git-bisect
> > didn't help finding a working version.
> > The issue is the PCI configuration space is not being migrated
> > successfully and MSIX remains masked at destination.
> >
> > Remove the migration differentiation between PCI and PCIe since
> > the logic resides now inside VMSTATE_PCI_DEVICE.
> > Remove also the VMXNET3_COMPAT_FLAG_DISABLE_PCIE based differentiation
> > since at 'realize' time is decided if the device is PCI or PCIe,
> > then the above macro is enough.
> >
> > Use the opportunity to move to the standard VMSTATE_MSIX
> > instead of the deprecated SaveVMHandlers.
> >
> > Signed-off-by: Marcel Apfelbaum <address@hidden>
>
>
> Reviewed-by: Dmitry Fleytman <address@hidden>
>
Tested-by: Sukrit Bhatnagar <address@hidden>
>
> > ---
> > hw/net/vmxnet3.c | 52 ++----------------------------------------------
> > 1 file changed, 2 insertions(+), 50 deletions(-)
> >
> > diff --git a/hw/net/vmxnet3.c b/hw/net/vmxnet3.c
> > index 10d01d0058..8b17548b02 100644
> > --- a/hw/net/vmxnet3.c
> > +++ b/hw/net/vmxnet3.c
> > @@ -2141,21 +2141,6 @@ vmxnet3_cleanup_msi(VMXNET3State *s)
> > msi_uninit(d);
> > }
> >
> > -static void
> > -vmxnet3_msix_save(QEMUFile *f, void *opaque)
> > -{
> > - PCIDevice *d = PCI_DEVICE(opaque);
> > - msix_save(d, f);
> > -}
> > -
> > -static int
> > -vmxnet3_msix_load(QEMUFile *f, void *opaque, int version_id)
> > -{
> > - PCIDevice *d = PCI_DEVICE(opaque);
> > - msix_load(d, f);
> > - return 0;
> > -}
> > -
> > static const MemoryRegionOps b0_ops = {
> > .read = vmxnet3_io_bar0_read,
> > .write = vmxnet3_io_bar0_write,
> > @@ -2176,11 +2161,6 @@ static const MemoryRegionOps b1_ops = {
> > },
> > };
> >
> > -static SaveVMHandlers savevm_vmxnet3_msix = {
> > - .save_state = vmxnet3_msix_save,
> > - .load_state = vmxnet3_msix_load,
> > -};
> > -
> > static uint64_t vmxnet3_device_serial_num(VMXNET3State *s)
> > {
> > uint64_t dsn_payload;
> > @@ -2203,7 +2183,6 @@ static uint64_t
> > vmxnet3_device_serial_num(VMXNET3State *s)
> >
> > static void vmxnet3_pci_realize(PCIDevice *pci_dev, Error **errp)
> > {
> > - DeviceState *dev = DEVICE(pci_dev);
> > VMXNET3State *s = VMXNET3(pci_dev);
> > int ret;
> >
> > @@ -2249,8 +2228,6 @@ static void vmxnet3_pci_realize(PCIDevice *pci_dev,
> > Error **errp)
> > pcie_dev_ser_num_init(pci_dev, VMXNET3_DSN_OFFSET,
> > vmxnet3_device_serial_num(s));
> > }
> > -
> > - register_savevm_live(dev, "vmxnet3-msix", -1, 1, &savevm_vmxnet3_msix,
> > s);
> > }
> >
> > static void vmxnet3_instance_init(Object *obj)
> > @@ -2440,29 +2417,6 @@ static const VMStateDescription
> > vmstate_vmxnet3_int_state = {
> > }
> > };
> >
> > -static bool vmxnet3_vmstate_need_pcie_device(void *opaque)
> > -{
> > - VMXNET3State *s = VMXNET3(opaque);
> > -
> > - return !(s->compat_flags & VMXNET3_COMPAT_FLAG_DISABLE_PCIE);
> > -}
> > -
> > -static bool vmxnet3_vmstate_test_pci_device(void *opaque, int version_id)
> > -{
> > - return !vmxnet3_vmstate_need_pcie_device(opaque);
> > -}
> > -
> > -static const VMStateDescription vmstate_vmxnet3_pcie_device = {
> > - .name = "vmxnet3/pcie",
> > - .version_id = 1,
> > - .minimum_version_id = 1,
> > - .needed = vmxnet3_vmstate_need_pcie_device,
> > - .fields = (VMStateField[]) {
> > - VMSTATE_PCI_DEVICE(parent_obj, VMXNET3State),
> > - VMSTATE_END_OF_LIST()
> > - }
> > -};
> > -
> > static const VMStateDescription vmstate_vmxnet3 = {
> > .name = "vmxnet3",
> > .version_id = 1,
> > @@ -2470,9 +2424,8 @@ static const VMStateDescription vmstate_vmxnet3 = {
> > .pre_save = vmxnet3_pre_save,
> > .post_load = vmxnet3_post_load,
> > .fields = (VMStateField[]) {
> > - VMSTATE_STRUCT_TEST(parent_obj, VMXNET3State,
> > - vmxnet3_vmstate_test_pci_device, 0,
> > - vmstate_pci_device, PCIDevice),
> > + VMSTATE_PCI_DEVICE(parent_obj, VMXNET3State),
> > + VMSTATE_MSIX(parent_obj, VMXNET3State),
> > VMSTATE_BOOL(rx_packets_compound, VMXNET3State),
> > VMSTATE_BOOL(rx_vlan_stripping, VMXNET3State),
> > VMSTATE_BOOL(lro_supported, VMXNET3State),
> > @@ -2508,7 +2461,6 @@ static const VMStateDescription vmstate_vmxnet3 = {
> > },
> > .subsections = (const VMStateDescription*[]) {
> > &vmxstate_vmxnet3_mcast_list,
> > - &vmstate_vmxnet3_pcie_device,
> > NULL
> > }
> > };
> > --
> > 2.17.1
> >
>
- [Qemu-devel] [PATCH] hw/net: fix vmxnet3 live migration, Marcel Apfelbaum, 2019/07/04
- Re: [Qemu-devel] [PATCH] hw/net: fix vmxnet3 live migration, Sukrit Bhatnagar, 2019/07/05
- Re: [Qemu-devel] [PATCH] hw/net: fix vmxnet3 live migration, Dmitry Fleytman, 2019/07/05
- Re: [Qemu-devel] [PATCH] hw/net: fix vmxnet3 live migration,
Sukrit Bhatnagar <=
- Re: [Qemu-devel] [PATCH] hw/net: fix vmxnet3 live migration, Marcel Apfelbaum, 2019/07/05
- Re: [Qemu-devel] [PATCH] hw/net: fix vmxnet3 live migration, Dr. David Alan Gilbert, 2019/07/08
- Re: [Qemu-devel] [PATCH] hw/net: fix vmxnet3 live migration, Marcel Apfelbaum, 2019/07/08
- Re: [Qemu-devel] [PATCH] hw/net: fix vmxnet3 live migration, Dmitry Fleytman, 2019/07/08
- Re: [Qemu-devel] [PATCH] hw/net: fix vmxnet3 live migration, Dr. David Alan Gilbert, 2019/07/08