bd36adb8df
multi-process: create IOHUB object to handle irq
...
IOHUB object is added to manage PCI IRQs. It uses KVM_IRQFD
ioctl to create irqfd to injecting PCI interrupts to the guest.
IOHUB object forwards the irqfd to the remote process. Remote process
uses this fd to directly send interrupts to the guest, bypassing QEMU.
Signed-off-by: John G Johnson <john.g.johnson@oracle.com >
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com >
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com >
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com >
Message-id: 51d5c3d54e28a68b002e3875c59599c9f5a424a1.1611938319.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com >
2021-02-10 09:23:28 +00:00
c746b74a7d
multi-process: Synchronize remote memory
...
Add ProxyMemoryListener object which is used to keep the view of the RAM
in sync between QEMU and remote process.
A MemoryListener is registered for system-memory AddressSpace. The
listener sends SYNC_SYSMEM message to the remote process when memory
listener commits the changes to memory, the remote process receives
the message and processes it in the handler for SYNC_SYSMEM message.
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com >
Signed-off-by: John G Johnson <john.g.johnson@oracle.com >
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com >
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com >
Message-id: 04fe4e6a9ca90d4f11ab6f59be7652f5b086a071.1611938319.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com >
2021-02-10 09:23:28 +00:00
9f8112073a
multi-process: introduce proxy object
...
Defines a PCI Device proxy object as a child of TYPE_PCI_DEVICE.
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com >
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com >
Signed-off-by: John G Johnson <john.g.johnson@oracle.com >
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com >
Message-id: b5186ebfedf8e557044d09a768846c59230ad3a7.1611938319.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com >
2021-02-10 09:23:28 +00:00
ed5d001916
multi-process: setup memory manager for remote device
...
SyncSysMemMsg message format is defined. It is used to send
file descriptors of the RAM regions to remote device.
RAM on the remote device is configured with a set of file descriptors.
Old RAM regions are deleted and new regions, each with an fd, is
added to the RAM.
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com >
Signed-off-by: John G Johnson <john.g.johnson@oracle.com >
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com >
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com >
Message-id: 7d2d1831d812e85f681e7a8ab99e032cf4704689.1611938319.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com >
2021-02-10 09:23:28 +00:00
c7d80c7c1d
multi-process: Associate fd of a PCIDevice with its object
...
Associate the file descriptor for a PCIDevice in remote process with
DeviceState object.
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com >
Signed-off-by: John G Johnson <john.g.johnson@oracle.com >
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com >
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com >
Message-id: f405a2ed5d7518b87bea7c59cfdf334d67e5ee51.1611938319.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com >
2021-02-10 09:23:28 +00:00
48b06f50d8
multi-process: Initialize message handler in remote device
...
Initializes the message handler function in the remote process. It is
called whenever there's an event pending on QIOChannel that registers
this function.
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com >
Signed-off-by: John G Johnson <john.g.johnson@oracle.com >
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com >
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com >
Message-id: 99d38d8b93753a6409ac2340e858858cda59ab1b.1611938319.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com >
2021-02-10 09:23:28 +00:00
ad22c3088b
multi-process: define MPQemuMsg format and transmission functions
...
Defines MPQemuMsg, which is the message that is sent to the remote
process. This message is sent over QIOChannel and is used to
command the remote process to perform various tasks.
Define transmission functions used by proxy and by remote.
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com >
Signed-off-by: John G Johnson <john.g.johnson@oracle.com >
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com >
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com >
Message-id: 56ca8bcf95195b2b195b08f6b9565b6d7410bce5.1611938319.git.jag.raman@oracle.com
[Replace struct iovec send[2] = {0} with {} to make clang happy as
suggested by Peter Maydell <peter.maydell@linaro.org >.
--Stefan]
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com >
2021-02-10 09:23:28 +00:00
3f0e7e57a3
multi-process: setup a machine object for remote device process
...
x-remote-machine object sets up various subsystems of the remote
device process. Instantiate PCI host bridge object and initialize RAM, IO &
PCI memory regions.
Signed-off-by: John G Johnson <john.g.johnson@oracle.com >
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com >
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com >
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com >
Message-id: c537f38d17f90453ca610c6b70cf3480274e0ba1.1611938319.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com >
2021-02-10 09:23:28 +00:00
