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[RFC v4 PATCH 12/49] multi-process: remote process initialization
From: |
Jagannathan Raman |
Subject: |
[RFC v4 PATCH 12/49] multi-process: remote process initialization |
Date: |
Thu, 24 Oct 2019 05:08:53 -0400 |
Adds the handler to process message from QEMU,
Initialize remote process main loop, handles SYNC_SYSMEM
message by updating its "system_memory" container using
shared file descriptors received from QEMU.
Signed-off-by: John G Johnson <address@hidden>
Signed-off-by: Elena Ufimtseva <address@hidden>
Signed-off-by: Jagannathan Raman <address@hidden>
---
v1 -> v2:
- Separate thread for message processing is removed
v2 -> v3:
- Added multi-channel support in the remote end
remote/remote-main.c | 80 ++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 80 insertions(+)
diff --git a/remote/remote-main.c b/remote/remote-main.c
index bf44310..7689b57 100644
--- a/remote/remote-main.c
+++ b/remote/remote-main.c
@@ -26,6 +26,7 @@
#include "qemu-common.h"
#include <stdio.h>
+#include <unistd.h>
#include "qemu/module.h"
#include "remote/pcihost.h"
@@ -33,12 +34,91 @@
#include "hw/boards.h"
#include "hw/qdev-core.h"
#include "qemu/main-loop.h"
+#include "remote/memory.h"
+#include "io/mpqemu-link.h"
+#include "qapi/error.h"
+#include "qemu/main-loop.h"
+#include "sysemu/cpus.h"
+#include "qemu-common.h"
+#include "hw/pci/pci.h"
+#include "qemu/thread.h"
+#include "qemu/main-loop.h"
+#include "qemu/config-file.h"
+#include "sysemu/sysemu.h"
+#include "block/block.h"
+
+static MPQemuLinkState *mpqemu_link;
+PCIDevice *remote_pci_dev;
+
+static void process_msg(GIOCondition cond, MPQemuChannel *chan)
+{
+ MPQemuMsg *msg = NULL;
+ Error *err = NULL;
+
+ if ((cond & G_IO_HUP) || (cond & G_IO_ERR)) {
+ error_setg(&err, "socket closed, cond is %d", cond);
+ goto finalize_loop;
+ }
+
+ msg = g_malloc0(sizeof(MPQemuMsg));
+
+ if (mpqemu_msg_recv(mpqemu_link, msg, chan) < 0) {
+ error_setg(&err, "Failed to receive message");
+ goto finalize_loop;
+ }
+
+ switch (msg->cmd) {
+ case INIT:
+ break;
+ case CONF_WRITE:
+ break;
+ case CONF_READ:
+ break;
+ default:
+ error_setg(&err, "Unknown command");
+ goto finalize_loop;
+ }
+
+ g_free(msg);
+
+ return;
+
+finalize_loop:
+ error_report_err(err);
+ g_free(msg);
+ mpqemu_link_finalize(mpqemu_link);
+ mpqemu_link = NULL;
+}
int main(int argc, char *argv[])
{
+ Error *err = NULL;
+
module_call_init(MODULE_INIT_QOM);
+ bdrv_init_with_whitelist();
+
+ if (qemu_init_main_loop(&err)) {
+ error_report_err(err);
+ return -EBUSY;
+ }
+
+ qemu_init_cpu_loop();
+
+ page_size_init();
+
current_machine = MACHINE(REMOTE_MACHINE(object_new(TYPE_REMOTE_MACHINE)));
+ mpqemu_link = mpqemu_link_create();
+ if (!mpqemu_link) {
+ printf("Could not create MPQemu link\n");
+ return -1;
+ }
+
+ mpqemu_init_channel(mpqemu_link, &mpqemu_link->com, STDIN_FILENO);
+ mpqemu_link_set_callback(mpqemu_link, process_msg);
+
+ mpqemu_start_coms(mpqemu_link);
+
return 0;
}
--
1.8.3.1
- [RFC v4 PATCH 41/49] multi-process/mig: Enable VMSD save in the Proxy object, (continued)
- [RFC v4 PATCH 41/49] multi-process/mig: Enable VMSD save in the Proxy object, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 42/49] multi-process/mig: Send VMSD of remote to the Proxy object, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 44/49] multi-process/mig: refactor runstate_check into common file, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 45/49] multi-process/mig: Synchronize runstate of remote process, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 47/49] multi-process: Enable support for multiple devices in remote, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 08/49] multi-process: add functions to synchronize proxy and remote endpoints, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 07/49] multi-process: define mpqemu-link object, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 49/49] multi-process: add configure and usage information, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 48/49] multi-process: add the concept description to docs/devel/qemu-multiprocess, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 12/49] multi-process: remote process initialization,
Jagannathan Raman <=
- [RFC v4 PATCH 17/49] multi-process: Synchronize remote memory, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 25/49] multi-process: Introduce build flags to separate remote process code, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 29/49] multi-process: add parse_cmdline in remote process, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 33/49] multi-process: perform device reset in the remote process, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 43/49] multi-process/mig: Load VMSD in the proxy object, Jagannathan Raman, 2019/10/24
- [RFC v4 PATCH 46/49] multi-process/mig: Restore the VMSD in remote process, Jagannathan Raman, 2019/10/24
- Re: [RFC v4 PATCH 00/49] Initial support of multi-process qemu, no-reply, 2019/10/24
- Re: [RFC v4 PATCH 00/49] Initial support of multi-process qemu, no-reply, 2019/10/24
- Re: [RFC v4 PATCH 00/49] Initial support of multi-process qemu, no-reply, 2019/10/24