From: Steve Sistare <steven.sistare@oracle.com>
To: qemu-devel@nongnu.org
Cc: Peter Xu <peterx@redhat.com>, Fabiano Rosas <farosas@suse.de>,
David Hildenbrand <david@redhat.com>,
Igor Mammedov <imammedo@redhat.com>,
Eduardo Habkost <eduardo@habkost.net>,
Marcel Apfelbaum <marcel.apfelbaum@gmail.com>,
Philippe Mathieu-Daude <philmd@linaro.org>,
Paolo Bonzini <pbonzini@redhat.com>,
"Daniel P. Berrange" <berrange@redhat.com>,
Markus Armbruster <armbru@redhat.com>,
Steve Sistare <steven.sistare@oracle.com>
Subject: [PATCH V1 08/26] migration: vmstate_info_void_ptr
Date: Mon, 29 Apr 2024 08:55:17 -0700 [thread overview]
Message-ID: <1714406135-451286-9-git-send-email-steven.sistare@oracle.com> (raw)
In-Reply-To: <1714406135-451286-1-git-send-email-steven.sistare@oracle.com>
Define VMSTATE_VOID_PTR so the value of a pointer (but not its target)
can be saved in the migration stream. This will be needed for CPR.
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
---
include/migration/vmstate.h | 15 +++++++++++++++
migration/vmstate-types.c | 24 ++++++++++++++++++++++++
2 files changed, 39 insertions(+)
diff --git a/include/migration/vmstate.h b/include/migration/vmstate.h
index a39c0e6..bb885d9 100644
--- a/include/migration/vmstate.h
+++ b/include/migration/vmstate.h
@@ -236,6 +236,7 @@ extern const VMStateInfo vmstate_info_uint8;
extern const VMStateInfo vmstate_info_uint16;
extern const VMStateInfo vmstate_info_uint32;
extern const VMStateInfo vmstate_info_uint64;
+extern const VMStateInfo vmstate_info_void_ptr;
/** Put this in the stream when migrating a null pointer.*/
#define VMS_NULLPTR_MARKER (0x30U) /* '0' */
@@ -326,6 +327,17 @@ extern const VMStateInfo vmstate_info_qlist;
.offset = vmstate_offset_value(_state, _field, _type), \
}
+#define VMSTATE_SINGLE_TEST_NO_CHECK(_field, _state, _test, \
+ _version, _info, _type) { \
+ .name = (stringify(_field)), \
+ .version_id = (_version), \
+ .field_exists = (_test), \
+ .size = sizeof(_type), \
+ .info = &(_info), \
+ .flags = VMS_SINGLE, \
+ .offset = offsetof(_state, _field) \
+}
+
#define VMSTATE_SINGLE_FULL(_field, _state, _test, _version, _info, \
_type, _err_hint) { \
.name = (stringify(_field)), \
@@ -952,6 +964,9 @@ extern const VMStateInfo vmstate_info_qlist;
#define VMSTATE_UINT64(_f, _s) \
VMSTATE_UINT64_V(_f, _s, 0)
+#define VMSTATE_VOID_PTR(_f, _s) \
+ VMSTATE_SINGLE_TEST_NO_CHECK(_f, _s, NULL, 0, vmstate_info_void_ptr, void *)
+
#ifdef CONFIG_LINUX
#define VMSTATE_U8(_f, _s) \
diff --git a/migration/vmstate-types.c b/migration/vmstate-types.c
index e83bfcc..097ecad 100644
--- a/migration/vmstate-types.c
+++ b/migration/vmstate-types.c
@@ -314,6 +314,30 @@ const VMStateInfo vmstate_info_uint64 = {
.put = put_uint64,
};
+/* 64 bit pointer */
+
+static int get_void_ptr(QEMUFile *f, void *pv, size_t size,
+ const VMStateField *field)
+{
+ void **v = pv;
+ qemu_get_be64s(f, (uint64_t *)v);
+ return 0;
+}
+
+static int put_void_ptr(QEMUFile *f, void *pv, size_t size,
+ const VMStateField *field, JSONWriter *vmdesc)
+{
+ void **v = pv;
+ qemu_put_be64s(f, (uint64_t *)v);
+ return 0;
+}
+
+const VMStateInfo vmstate_info_void_ptr = {
+ .name = "void_ptr",
+ .get = get_void_ptr,
+ .put = put_void_ptr,
+};
+
static int get_nullptr(QEMUFile *f, void *pv, size_t size,
const VMStateField *field)
--
1.8.3.1
next prev parent reply other threads:[~2024-04-29 16:06 UTC|newest]
Thread overview: 113+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-29 15:55 [PATCH V1 00/26] Live update: cpr-exec Steve Sistare
2024-04-29 15:55 ` [PATCH V1 01/26] oslib: qemu_clear_cloexec Steve Sistare
2024-05-06 23:27 ` Fabiano Rosas
2024-05-07 8:56 ` Daniel P. Berrangé
2024-05-07 13:54 ` Fabiano Rosas
2024-04-29 15:55 ` [PATCH V1 02/26] vl: helper to request re-exec Steve Sistare
2024-04-29 15:55 ` [PATCH V1 03/26] migration: SAVEVM_FOREACH Steve Sistare
2024-05-06 23:17 ` Fabiano Rosas
2024-05-13 19:27 ` Steven Sistare
2024-05-27 18:14 ` Peter Xu
2024-04-29 15:55 ` [PATCH V1 04/26] migration: delete unused parameter mis Steve Sistare
2024-05-06 21:50 ` Fabiano Rosas
2024-05-27 18:02 ` Peter Xu
2024-04-29 15:55 ` [PATCH V1 05/26] migration: precreate vmstate Steve Sistare
2024-05-07 21:02 ` Fabiano Rosas
2024-05-13 19:28 ` Steven Sistare
2024-05-24 13:56 ` Fabiano Rosas
2024-05-27 18:16 ` Peter Xu
2024-05-28 15:09 ` Steven Sistare via
2024-05-29 18:39 ` Peter Xu
2024-05-30 17:04 ` Steven Sistare via
2024-04-29 15:55 ` [PATCH V1 06/26] migration: precreate vmstate for exec Steve Sistare
2024-05-06 23:34 ` Fabiano Rosas
2024-05-13 19:28 ` Steven Sistare
2024-05-13 21:21 ` Fabiano Rosas
2024-04-29 15:55 ` [PATCH V1 07/26] migration: VMStateId Steve Sistare
2024-05-07 21:03 ` Fabiano Rosas
2024-05-27 18:20 ` Peter Xu
2024-05-28 15:10 ` Steven Sistare via
2024-05-28 17:44 ` Peter Xu
2024-05-29 17:30 ` Steven Sistare via
2024-05-29 18:53 ` Peter Xu
2024-05-30 17:11 ` Steven Sistare via
2024-05-30 18:03 ` Peter Xu
2024-04-29 15:55 ` Steve Sistare [this message]
2024-05-07 21:33 ` [PATCH V1 08/26] migration: vmstate_info_void_ptr Fabiano Rosas
2024-05-27 18:31 ` Peter Xu
2024-05-28 15:10 ` Steven Sistare via
2024-05-28 18:21 ` Peter Xu
2024-05-29 17:30 ` Steven Sistare via
2024-04-29 15:55 ` [PATCH V1 09/26] migration: vmstate_register_named Steve Sistare
2024-05-09 14:19 ` Fabiano Rosas
2024-05-09 14:32 ` Fabiano Rosas
2024-05-13 19:29 ` Steven Sistare
2024-04-29 15:55 ` [PATCH V1 10/26] migration: vmstate_unregister_named Steve Sistare
2024-04-29 15:55 ` [PATCH V1 11/26] migration: vmstate_register at init time Steve Sistare
2024-04-29 15:55 ` [PATCH V1 12/26] migration: vmstate factory object Steve Sistare
2024-04-29 15:55 ` [PATCH V1 13/26] physmem: ram_block_create Steve Sistare
2024-05-13 18:37 ` Fabiano Rosas
2024-05-13 19:30 ` Steven Sistare
2024-04-29 15:55 ` [PATCH V1 14/26] physmem: hoist guest_memfd creation Steve Sistare
2024-04-29 15:55 ` [PATCH V1 15/26] physmem: hoist host memory allocation Steve Sistare
2024-04-29 15:55 ` [PATCH V1 16/26] physmem: set ram block idstr earlier Steve Sistare
2024-04-29 15:55 ` [PATCH V1 17/26] machine: memfd-alloc option Steve Sistare
2024-05-28 21:12 ` Peter Xu
2024-05-29 17:31 ` Steven Sistare via
2024-05-29 19:14 ` Peter Xu
2024-05-30 17:11 ` Steven Sistare via
2024-05-30 18:14 ` Peter Xu
2024-05-31 19:32 ` Steven Sistare via
2024-04-29 15:55 ` [PATCH V1 18/26] migration: cpr-exec-args parameter Steve Sistare
2024-05-02 12:23 ` Markus Armbruster
2024-05-02 16:00 ` Steven Sistare
2024-05-21 8:13 ` Daniel P. Berrangé
2024-04-29 15:55 ` [PATCH V1 19/26] physmem: preserve ram blocks for cpr Steve Sistare
2024-05-28 21:44 ` Peter Xu
2024-05-29 17:31 ` Steven Sistare via
2024-05-29 19:25 ` Peter Xu
2024-05-30 17:12 ` Steven Sistare via
2024-05-30 18:39 ` Peter Xu
2024-05-31 19:32 ` Steven Sistare via
2024-04-29 15:55 ` [PATCH V1 20/26] migration: cpr-exec mode Steve Sistare
2024-05-02 12:23 ` Markus Armbruster
2024-05-02 16:00 ` Steven Sistare
2024-05-03 6:26 ` Markus Armbruster
2024-05-21 8:20 ` Daniel P. Berrangé
2024-05-24 14:58 ` Fabiano Rosas
2024-05-27 18:54 ` Steven Sistare via
2024-04-29 15:55 ` [PATCH V1 21/26] migration: migrate_add_blocker_mode Steve Sistare
2024-05-09 17:47 ` Fabiano Rosas
2024-04-29 15:55 ` [PATCH V1 22/26] migration: ram block cpr-exec blockers Steve Sistare
2024-05-09 18:01 ` Fabiano Rosas
2024-05-13 19:29 ` Steven Sistare
2024-04-29 15:55 ` [PATCH V1 23/26] migration: misc " Steve Sistare
2024-05-09 18:05 ` Fabiano Rosas
2024-05-24 12:40 ` Fabiano Rosas
2024-05-27 19:02 ` Steven Sistare via
2024-04-29 15:55 ` [PATCH V1 24/26] seccomp: cpr-exec blocker Steve Sistare
2024-05-09 18:16 ` Fabiano Rosas
2024-05-10 7:54 ` Daniel P. Berrangé
2024-05-13 19:29 ` Steven Sistare
2024-05-21 7:14 ` Daniel P. Berrangé
2024-04-29 15:55 ` [PATCH V1 25/26] migration: fix mismatched GPAs during cpr-exec Steve Sistare
2024-05-09 18:39 ` Fabiano Rosas
2024-04-29 15:55 ` [PATCH V1 26/26] migration: only-migratable-modes Steve Sistare
2024-05-09 19:14 ` Fabiano Rosas
2024-05-13 19:48 ` Steven Sistare
2024-05-13 21:57 ` Fabiano Rosas
2024-05-21 8:05 ` Daniel P. Berrangé
2024-05-02 16:13 ` cpr-exec doc (was Re: [PATCH V1 00/26] Live update: cpr-exec) Steven Sistare
2024-05-02 18:15 ` Peter Xu
2024-05-20 18:30 ` [PATCH V1 00/26] Live update: cpr-exec Steven Sistare
2024-05-20 22:28 ` Fabiano Rosas
2024-05-21 2:31 ` Peter Xu
2024-05-21 11:46 ` Steven Sistare
2024-05-27 17:45 ` Peter Xu
2024-05-28 15:10 ` Steven Sistare via
2024-05-28 16:42 ` Peter Xu
2024-05-30 17:17 ` Steven Sistare via
2024-05-30 19:23 ` Peter Xu
2024-05-24 13:02 ` Fabiano Rosas
2024-05-24 14:07 ` Steven Sistare
2024-05-27 18:07 ` Peter Xu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1714406135-451286-9-git-send-email-steven.sistare@oracle.com \
--to=steven.sistare@oracle.com \
--cc=armbru@redhat.com \
--cc=berrange@redhat.com \
--cc=david@redhat.com \
--cc=eduardo@habkost.net \
--cc=farosas@suse.de \
--cc=imammedo@redhat.com \
--cc=marcel.apfelbaum@gmail.com \
--cc=pbonzini@redhat.com \
--cc=peterx@redhat.com \
--cc=philmd@linaro.org \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).