motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-02 07:13:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

multi-process: Synchronize remote memory

Browse source 
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>
This commit is contained in:
Jagannathan Raman 2021-01-29 11:46:18 -05:00 • committed by Stefan Hajnoczi
parent 7ee3f82384
commit c746b74a7d
7 changed files with 270 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

28
include/hw/remote/proxy-memory-listener.h Normal file
View file

@ -0,0 +1,28 @@
/*
* Copyright © 2018, 2021 Oracle and/or its affiliates.
*
* This work is licensed under the terms of the GNU GPL, version 2 or later.
* See the COPYING file in the top-level directory.
*
*/
#ifndef PROXY_MEMORY_LISTENER_H
#define PROXY_MEMORY_LISTENER_H
#include "exec/memory.h"
#include "io/channel.h"
typedef struct ProxyMemoryListener {
MemoryListener listener;
int n_mr_sections;
MemoryRegionSection *mr_sections;
QIOChannel *ioc;
} ProxyMemoryListener;
void proxy_memory_listener_configure(ProxyMemoryListener *proxy_listener,
QIOChannel *ioc);
void proxy_memory_listener_deconfigure(ProxyMemoryListener *proxy_listener);
#endif

2
include/hw/remote/proxy.h
View file

@ -11,6 +11,7 @@
#include "hw/pci/pci.h"
#include "io/channel.h"
#include "hw/remote/proxy-memory-listener.h"
#define TYPE_PCI_PROXY_DEV "x-pci-proxy-dev"
OBJECT_DECLARE_SIMPLE_TYPE(PCIProxyDev, PCI_PROXY_DEV)
@ -36,6 +37,7 @@ struct PCIProxyDev {
QemuMutex io_mutex;
QIOChannel *ioc;
Error *migration_blocker;
ProxyMemoryListener proxy_listener;
ProxyMemoryRegion region[PCI_NUM_REGIONS];
};