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From: Fabiano Rosas <farosas@suse.de>
To: qemu-devel@nongnu.org
Cc: Peter Xu <peterx@redhat.com>,
	Alexander Mikhalitsyn <alexander@mihalicyn.com>,
	Juraj Marcin <jmarcin@redhat.com>
Subject: [RFC PATCH v1 10/17] vmstate: Remove curr_elem_p
Date: Tue, 24 Mar 2026 16:43:25 -0300	[thread overview]
Message-ID: <20260324194333.30004-11-farosas@suse.de> (raw)
In-Reply-To: <20260324194333.30004-1-farosas@suse.de>

The usage of curr_elem_p for holding the array of pointers element is
a bit confusing. The side effect of updating what this variable points
to is not very clear. Remove it in favor of a local array_elem
variable with the same purpose, but make it of type void** instead,
since this is what it really is. Move it under the
VMS_ARRAY_OF_POINTER check.

Signed-off-by: Fabiano Rosas <farosas@suse.de>
---
 migration/vmstate.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/migration/vmstate.c b/migration/vmstate.c
index 0cdfde2232..85e63305f6 100644
--- a/migration/vmstate.c
+++ b/migration/vmstate.c
@@ -261,16 +261,15 @@ bool vmstate_load_vmsd(QEMUFile *f, const VMStateDescription *vmsd,
                 /* If we will process the load of field? */
                 bool load_field = true;
                 bool ok = true;
-                void *curr_elem_p = first_elem + size * i;
-                void *curr_elem = curr_elem_p;
+                void *curr_elem;
 
                 if (field->flags & VMS_ARRAY_OF_POINTER) {
+                    void **array_elem = (void **)first_elem + i;
                     bool use_dynamic_array =
                         field->flags & VMS_ARRAY_OF_POINTER_AUTO_ALLOC;
                     bool use_marker_field;
 
-                    curr_elem = *(void **)curr_elem_p;
-
+                    curr_elem = *array_elem;
                     use_marker_field = use_dynamic_array || !curr_elem;
 
                     if (use_marker_field) {
@@ -293,9 +292,11 @@ bool vmstate_load_vmsd(QEMUFile *f, const VMStateDescription *vmsd,
                              */
                             curr_elem = g_malloc0(field->size);
                             /* Remember to update the root pointer! */
-                            *(void **)curr_elem_p = curr_elem;
+                            *(void **)array_elem = curr_elem;
                         }
                     }
+                } else {
+                    curr_elem = first_elem + size * i;
                 }
 
                 if (load_field) {
-- 
2.51.0



  parent reply	other threads:[~2026-03-24 19:44 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-03-24 19:43 [RFC PATCH v1 00/17] migration: vmstate_save|load changes for peterx Fabiano Rosas
2026-03-24 19:43 ` [RFC PATCH v1 01/17] vmstate: fixup the use of AUTO_ALLOC flag Fabiano Rosas
2026-03-25 16:18   ` Peter Xu
2026-03-24 19:43 ` [RFC PATCH v1 02/17] vmstate: Remove vmstate_use_marker_field Fabiano Rosas
2026-03-25 16:37   ` Peter Xu
2026-03-25 17:51     ` Fabiano Rosas
2026-03-24 19:43 ` [RFC PATCH v1 03/17] vmstate: Stop checking size for nullptr compression Fabiano Rosas
2026-03-24 19:43 ` [RFC PATCH v1 04/17] vmstate: Set error inside of vmstate_save_field_with_vmdesc Fabiano Rosas
2026-03-24 19:43 ` [RFC PATCH v1 05/17] vmstate: Remove vmdesc_loop Fabiano Rosas
2026-03-25 17:07   ` Peter Xu
2026-03-25 18:11     ` Fabiano Rosas
2026-03-25 21:43       ` Peter Xu
2026-03-24 19:43 ` [RFC PATCH v1 06/17] vmstate: Put array of pointers code together Fabiano Rosas
2026-03-24 19:43 ` [RFC PATCH v1 07/17] vmstate: Create and save ptr marker in same function Fabiano Rosas
2026-03-24 19:43 ` [RFC PATCH v1 08/17] vmstate: Don't recompute size and n_elems in vmstate_size Fabiano Rosas
2026-03-24 19:43 ` [RFC PATCH v1 09/17] vmstate: Increase scope of vmstate_handle_alloc Fabiano Rosas
2026-03-24 19:43 ` Fabiano Rosas [this message]
2026-03-24 19:43 ` [RFC PATCH v1 11/17] vmstate: Introduce vmstate_first Fabiano Rosas
2026-03-24 19:43 ` [RFC PATCH v1 12/17] vmstate: Introduce vmstate_next Fabiano Rosas
2026-03-26 14:18   ` Peter Xu
2026-03-26 21:45     ` Fabiano Rosas
2026-03-24 19:43 ` [RFC PATCH v1 13/17] vmstate: Drop VMS_ARRAY_OF_POINTER_AUTO_ALLOC Fabiano Rosas
2026-03-25 19:29   ` Peter Xu
2026-03-25 21:49     ` Peter Xu
2026-03-25 21:57   ` Peter Xu
2026-03-24 19:43 ` [RFC PATCH v1 14/17] vmstate: Move VMS_MUST_EXIST check Fabiano Rosas
2026-03-25 19:38   ` Peter Xu
2026-03-24 19:43 ` [RFC PATCH v1 15/17] vmstate: Invert exists check Fabiano Rosas
2026-03-24 19:43 ` [RFC PATCH v1 16/17] vmstate: Declare variables at the top Fabiano Rosas
2026-03-24 19:43 ` [RFC PATCH v1 17/17] vmstate: Reduce indentation levels Fabiano Rosas
2026-03-25 19:43 ` [RFC PATCH v1 00/17] migration: vmstate_save|load changes for peterx Peter Xu
2026-03-25 20:10   ` Fabiano Rosas
2026-03-26 19:42     ` Peter Xu

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