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[PULL 06/10] hw/xen/xen-hvm-common: skip ioreq creation on ioreq registr
From: |
Stefano Stabellini |
Subject: |
[PULL 06/10] hw/xen/xen-hvm-common: skip ioreq creation on ioreq registration failure |
Date: |
Fri, 10 Feb 2023 14:27:25 -0800 |
From: Stefano Stabellini <stefano.stabellini@amd.com>
On ARM it is possible to have a functioning xenpv machine with only the
PV backends and no IOREQ server. If the IOREQ server creation fails continue
to the PV backends initialization.
Also, moved the IOREQ registration and mapping subroutine to new function
xen_do_ioreq_register().
Signed-off-by: Stefano Stabellini <stefano.stabellini@amd.com>
Signed-off-by: Vikram Garhwal <vikram.garhwal@amd.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Reviewed-by: Paul Durrant <paul@xen.org>
---
hw/xen/xen-hvm-common.c | 53 ++++++++++++++++++++++++++++-------------
1 file changed, 36 insertions(+), 17 deletions(-)
diff --git a/hw/xen/xen-hvm-common.c b/hw/xen/xen-hvm-common.c
index c2e1e08124..5e3c7b073f 100644
--- a/hw/xen/xen-hvm-common.c
+++ b/hw/xen/xen-hvm-common.c
@@ -781,25 +781,12 @@ err:
exit(1);
}
-void xen_register_ioreq(XenIOState *state, unsigned int max_cpus,
- MemoryListener xen_memory_listener)
+static void xen_do_ioreq_register(XenIOState *state,
+ unsigned int max_cpus,
+ MemoryListener xen_memory_listener)
{
int i, rc;
- state->xce_handle = xenevtchn_open(NULL, 0);
- if (state->xce_handle == NULL) {
- perror("xen: event channel open");
- goto err;
- }
-
- state->xenstore = xs_daemon_open();
- if (state->xenstore == NULL) {
- perror("xen: xenstore open");
- goto err;
- }
-
- xen_create_ioreq_server(xen_domid, &state->ioservid);
-
state->exit.notify = xen_exit_notifier;
qemu_add_exit_notifier(&state->exit);
@@ -863,12 +850,44 @@ void xen_register_ioreq(XenIOState *state, unsigned int
max_cpus,
QLIST_INIT(&state->dev_list);
device_listener_register(&state->device_listener);
+ return;
+
+err:
+ error_report("xen hardware virtual machine initialisation failed");
+ exit(1);
+}
+
+void xen_register_ioreq(XenIOState *state, unsigned int max_cpus,
+ MemoryListener xen_memory_listener)
+{
+ int rc;
+
+ state->xce_handle = xenevtchn_open(NULL, 0);
+ if (state->xce_handle == NULL) {
+ perror("xen: event channel open");
+ goto err;
+ }
+
+ state->xenstore = xs_daemon_open();
+ if (state->xenstore == NULL) {
+ perror("xen: xenstore open");
+ goto err;
+ }
+
+ rc = xen_create_ioreq_server(xen_domid, &state->ioservid);
+ if (!rc) {
+ xen_do_ioreq_register(state, max_cpus, xen_memory_listener);
+ } else {
+ warn_report("xen: failed to create ioreq server");
+ }
+
xen_bus_init();
xen_register_backend(state);
return;
+
err:
- error_report("xen hardware virtual machine initialisation failed");
+ error_report("xen hardware virtual machine backend registration failed");
exit(1);
}
--
2.25.1
- [PULL 00/10] xenpvh machine, Stefano Stabellini, 2023/02/10
- [PULL 01/10] hw/i386/xen/: move xen-mapcache.c to hw/xen/, Stefano Stabellini, 2023/02/10
- [PULL 03/10] hw/i386/xen/xen-hvm: move x86-specific fields out of XenIOState, Stefano Stabellini, 2023/02/10
- [PULL 02/10] hw/i386/xen: rearrange xen_hvm_init_pc, Stefano Stabellini, 2023/02/10
- [PULL 05/10] include/hw/xen/xen_common: return error from xen_create_ioreq_server, Stefano Stabellini, 2023/02/10
- [PULL 06/10] hw/xen/xen-hvm-common: skip ioreq creation on ioreq registration failure,
Stefano Stabellini <=
- [PULL 04/10] xen-hvm: reorganize xen-hvm and move common function to xen-hvm-common, Stefano Stabellini, 2023/02/10
- [PULL 07/10] hw/xen/xen-hvm-common: Use g_new and error_report, Stefano Stabellini, 2023/02/10
- [PULL 08/10] meson.build: do not set have_xen_pci_passthrough for aarch64 targets, Stefano Stabellini, 2023/02/10
- [PULL 10/10] meson.build: enable xenpv machine build for ARM, Stefano Stabellini, 2023/02/10
- [PULL 09/10] hw/arm: introduce xenpvh machine, Stefano Stabellini, 2023/02/10
- Re: [PULL 00/10] xenpvh machine, Peter Maydell, 2023/02/13