# # Vsock protocol # config VSOCKETS tristate "Virtual Socket protocol" help Virtual Socket Protocol is a socket protocol similar to TCP/IP allowing communication between Virtual Machines and hypervisor or host. You should also select one or more hypervisor-specific transports below. To compile this driver as a module, choose M here: the module will be called vsock. If unsure, say N. config VMWARE_VMCI_VSOCKETS tristate "VMware VMCI transport for Virtual Sockets" depends on VSOCKETS && VMWARE_VMCI help This module implements a VMCI transport for Virtual Sockets. Enable this transport if your Virtual Machine runs on a VMware hypervisor. To compile this driver as a module, choose M here: the module will be called vmw_vsock_vmci_transport. If unsure, say N. config VIRTIO_VSOCKETS tristate "virtio transport for Virtual Sockets" depends on VSOCKETS && VIRTIO select VIRTIO_VSOCKETS_COMMON help This module implements a virtio transport for Virtual Sockets. Enable this transport if your Virtual Machine host supports Virtual Sockets over virtio. To compile this driver as a module, choose M here: the module will be called vmw_vsock_virtio_transport. If unsure, say N. config VIRTIO_VSOCKETS_COMMON tristate help This option is selected by any driver which needs to access the virtio_vsock. The module will be called vmw_vsock_virtio_transport_common. net-next plumbingsTobias Klauser
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authorBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
committerBjorn Helgaas <bhelgaas@google.com>2017-01-27 15:00:45 -0600
commit030305d69fc6963c16003f50d7e8d74b02d0a143 (patch)
tree363a4e34d199178769b7e7eeb26ea2620a55847b /tools/objtool/arch
parent4d191b1b63c209e37bf27938ef365244d3c41084 (diff)
PCI/ASPM: Handle PCI-to-PCIe bridges as roots of PCIe hierarchies
In a struct pcie_link_state, link->root points to the pcie_link_state of the root of the PCIe hierarchy. For the topmost link, this points to itself (link->root = link). For others, we copy the pointer from the parent (link->root = link->parent->root). Previously we recognized that Root Ports originated PCIe hierarchies, but we treated PCI/PCI-X to PCIe Bridges as being in the middle of the hierarchy, and when we tried to copy the pointer from link->parent->root, there was no parent, and we dereferenced a NULL pointer: BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 IP: [<ffffffff9e424350>] pcie_aspm_init_link_state+0x170/0x820 Recognize that PCI/PCI-X to PCIe Bridges originate PCIe hierarchies just like Root Ports do, so link->root for these devices should also point to itself. Fixes: 51ebfc92b72b ("PCI: Enumerate switches below PCI-to-PCIe bridges") Link: https://bugzilla.kernel.org/show_bug.cgi?id=193411 Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1022181 Tested-by: lists@ssl-mail.com Tested-by: Jayachandran C. <jnair@caviumnetworks.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: stable@vger.kernel.org # v4.2+
Diffstat (limited to 'tools/objtool/arch')