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multi-process: introduce proxy object

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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>
This commit is contained in:
Elena Ufimtseva 2021-01-29 11:46:14 -05:00 • committed by Stefan Hajnoczi
parent ed5d001916
commit 9f8112073a
4 changed files with 135 additions and 0 deletions
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33
include/hw/remote/proxy.h Normal file
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/*
* 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_H
#define PROXY_H
#include "hw/pci/pci.h"
#include "io/channel.h"
#define TYPE_PCI_PROXY_DEV "x-pci-proxy-dev"
OBJECT_DECLARE_SIMPLE_TYPE(PCIProxyDev, PCI_PROXY_DEV)
struct PCIProxyDev {
PCIDevice parent_dev;
char *fd;
/*
* Mutex used to protect the QIOChannel fd from
* the concurrent access by the VCPUs since proxy
* blocks while awaiting for the replies from the
* process remote.
*/
QemuMutex io_mutex;
QIOChannel *ioc;
Error *migration_blocker;
};
#endif /* PROXY_H */