similar to: [PATCHv2 RFC] qemu/msix: remove msix_supported safety flag

Implement MSI support in APIC. Note that MSI and MMIO APIC registers are at the same memory location, but actually not on the global bus: MSI is on PCI bus, APIC is connected directly to the CPU. We map them on the global bus at the same address which happens to work because MSI registers are reserved in APIC MMIO and vice versa. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> ---

Implement MSI support in APIC. Note that MSI and MMIO APIC registers are at the same memory location, but actually not on the global bus: MSI is on PCI bus, APIC is connected directly to the CPU. We map them on the global bus at the same address which happens to work because MSI registers are reserved in APIC MMIO and vice versa. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> ---

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported: this is a safety measure to avoid breaking platforms which should support MSI-X but currently lack this in the interrupt controller emulation. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported: this is a safety measure to avoid breaking platforms which should support MSI-X but currently lack this in the interrupt controller emulation. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2

Hi all, this patch series by Wei Liu implements a simple Xen APIC module and use it to deliver MSI/MSIX for Xen HVM guests. The second version of this series includes the "or later" copyright clause for xen_apic.c and a fix to the return value of xen_apic_mem_read (thanks Peter for finding it out). Stefano Stabellini (2): Xen: basic HVM MSI injection support. Xen: Add

Implement a simple Xen APIC module and use it to deliver MSI/MSIX for Xen HVM guests.

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2 +- hw/msix.c | 423 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/msix.h | 35 +++++ hw/pci.h | 20 +++ 4

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2 +- hw/msix.c | 423 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/msix.h | 35 +++++ hw/pci.h | 20 +++ 4

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2 +- hw/msix.c | 423 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/msix.h | 35 +++++ hw/pci.h | 20 +++ 4

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2 +- hw/msix.c | 423 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/msix.h | 35 +++++ hw/pci.h | 20 +++ 4

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported: this is a safety measure to avoid breaking platforms which should support MSI-X but currently lack this in the interrupt controller emulation. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported: this is a safety measure to avoid breaking platforms which should support MSI-X but currently lack this in the interrupt controller emulation. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported: this is a safety measure to avoid breaking platforms which should support MSI-X but currently lack this in the interrupt controller emulation. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported: this is a safety measure to avoid breaking platforms which should support MSI-X but currently lack this in the interrupt controller emulation. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2 +- hw/msix.c | 423 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/msix.h | 35 +++++ hw/pci.h | 20 +++ 4

Add functions implementing MSI-X support. First user will be virtio-pci. Note that platform must set a flag to declare MSI supported. For PC this will be set by APIC. Signed-off-by: Michael S. Tsirkin <mst at redhat.com> --- Makefile.target | 2 +- hw/msix.c | 423 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ hw/msix.h | 35 +++++ hw/pci.h | 20 +++ 4

Support PV on HVM MSIX remapping The technique is the same used with MSI: if the guest enables an MSIX passing 0 as vector number, then read the address and use it as pirq number for the following mapping request to Xen. Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com> diff --git a/hw/pt-msi.c b/hw/pt-msi.c index f0fb3e3..b01744e 100644 --- a/hw/pt-msi.c +++

On Fri, Dec 26, 2014 at 10:53:42AM +0800, Jason Wang wrote: > Hi all: > > This series try to share MSIX irq for each tx/rx queue pair. This is > done through: > > - introducing virtio pci channel which are group of virtqueues that > sharing a single MSIX irq (Patch 1) > - expose channel setting to virtio core api (Patch 2) > - try to use channel setting in virtio-net

On Sun, Jan 04, 2015 at 04:38:17PM +0800, Jason Wang wrote: > > On 12/28/2014 03:52 PM, Michael S. Tsirkin wrote: > > On Fri, Dec 26, 2014 at 10:53:42AM +0800, Jason Wang wrote: > >> Hi all: > >> > >> This series try to share MSIX irq for each tx/rx queue pair. This is > >> done through: > >> > >> - introducing virtio pci channel

Jason Wang <jasowang at redhat.com> writes: > Hi all: > > This series try to share MSIX irq for each tx/rx queue pair. This is > done through: > > - introducing virtio pci channel which are group of virtqueues that > sharing a single MSIX irq (Patch 1) > - expose channel setting to virtio core api (Patch 2) > - try to use channel setting in virtio-net (Patch 3)