[v1] *: Constify VMState

[PATCH 66/71] migration: Constify VMState

Richard Henderson posted 71 patches 1 year ago

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Maintainers: Gerd Hoffmann <kraxel@redhat.com>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, Stefan Berger <stefanb@linux.vnet.ibm.com>, Richard Henderson <richard.henderson@linaro.org>, Paolo Bonzini <pbonzini@redhat.com>, Luc Michel <luc@lmichel.fr>, Damien Hedde <damien.hedde@dahe.fr>, Juan Quintela <quintela@redhat.com>, Peter Xu <peterx@redhat.com>, Fabiano Rosas <farosas@suse.de>, Leonardo Bras <leobras@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Greg Kurz <groug@kaod.org>, Christian Schoenebeck <qemu_oss@crudebyte.com>, Igor Mammedov <imammedo@redhat.com>, Ani Sinha <anisinha@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Aurelien Jarno <aurelien@aurel32.net>, Alistair Francis <alistair@alistair23.me>, Peter Maydell <peter.maydell@linaro.org>, "Cédric Le Goater" <clg@kaod.org>, Andrew Jeffery <andrew@codeconstruct.com.au>, Joel Stanley <joel@jms.id.au>, Tyrone Ting <kfting@nuvoton.com>, Hao Wu <wuhaotsh@google.com>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Rob Herring <robh@kernel.org>, Jan Kiszka <jan.kiszka@web.de>, Eric Auger <eric.auger@redhat.com>, Shannon Zhao <shannon.zhaosl@gmail.com>, Laurent Vivier <laurent@vivier.eu>, Kevin Wolf <kwolf@redhat.com>, Hanna Reitz <hreitz@redhat.com>, John Snow <jsnow@redhat.com>, Raphael Norwitz <raphael.norwitz@nutanix.com>, Stefan Hajnoczi <stefanha@redhat.com>, Antony Pavlov <antonynpavlov@gmail.com>, Igor Mitsyanko <i.mitsyanko@gmail.com>, Alberto Garcia <berto@igalia.com>, Bin Meng <bin.meng@windriver.com>, Yoshinori Sato <ysato@users.sourceforge.jp>, Magnus Damm <magnus.damm@gmail.com>, Halil Pasic <pasic@linux.ibm.com>, Christian Borntraeger <borntraeger@linux.ibm.com>, Thomas Huth <thuth@redhat.com>, Palmer Dabbelt <palmer@dabbelt.com>, Nicholas Piggin <npiggin@gmail.com>, Daniel Henrique Barboza <danielhb413@gmail.com>, David Gibson <david@gibson.dropbear.id.au>, Harsh Prateek Bora <harshpb@linux.ibm.com>, Amit Shah <amit@kernel.org>, Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, "Hervé Poussineau" <hpoussin@reactos.org>, Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>, BALATON Zoltan <balaton@eik.bme.hu>, "Maciej S. Szmigiero" <maciej.szmigiero@oracle.com>, Beniamino Galvani <b.galvani@gmail.com>, Strahinja Jankovic <strahinja.p.jankovic@gmail.com>, Corey Minyard <cminyard@mvista.com>, Titus Rwantare <titusr@google.com>, Eduardo Habkost <eduardo@habkost.net>, Jason Wang <jasowang@redhat.com>, David Woodhouse <dwmw2@infradead.org>, Paul Durrant <paul@xen.org>, Stefano Stabellini <sstabellini@kernel.org>, Anthony Perard <anthony.perard@citrix.com>, Helge Deller <deller@gmx.de>, Song Gao <gaosong@loongson.cn>, Chris Wulff <crwulff@gmail.com>, Marek Vasut <marex@denx.de>, Jia Liu <proljc@gmail.com>, Weiwei Li <liweiwei@iscas.ac.cn>, Liu Zhiwei <zhiwei_liu@linux.alibaba.com>, David Hildenbrand <david@redhat.com>, "Frédéric Barrat" <fbarrat@linux.ibm.com>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Niek Linnenbank <nieklinnenbank@gmail.com>, Jean-Christophe Dubois <jcd@tribudubois.net>, Andrey Smirnov <andrew.smirnov@gmail.com>, Subbaraya Sundeep <sundeep.lkml@gmail.com>, Francisco Iglesias <francisco.iglesias@amd.com>, Pavel Pisa <pisa@cmp.felk.cvut.cz>, Vikram Garhwal <fnu.vikram@xilinx.com>, Dmitry Fleytman <dmitry.fleytman@gmail.com>, Akihiko Odaki <akihiko.odaki@daynix.com>, Stefan Weil <sw@weilnetz.de>, Sriram Yagnaraman <sriram.yagnaraman@est.tech>, Sven Schnelle <svens@stackframe.org>, Stafford Horne <shorne@gmail.com>, Huacai Chen <chenhuacai@kernel.org>, Sunil V L <sunilvl@ventanamicro.com>, Anup Patel <anup.patel@wdc.com>, Eric Farman <farman@linux.ibm.com>, Ilya Leoshkevich <iii@linux.ibm.com>, Cornelia Huck <cohuck@redhat.com>, Fam Zheng <fam@euphon.net>, Hannes Reinecke <hare@suse.com>, Artyom Tarasenko <atar4qemu@gmail.com>, Alex Williamson <alex.williamson@redhat.com>, "Gonglei (Arei)" <arei.gonglei@huawei.com>, Radoslaw Biernacki <rad@semihalf.com>, Leif Lindholm <quic_llindhol@quicinc.com>, Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>, Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>, Alexander Graf <agraf@csgraf.de>, Michael Rolnik <mrolnik@gmail.com>

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[PATCH 66/71] migration: Constify VMState

Posted by Richard Henderson 1 year ago

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 migration/global_state.c |  2 +-
 migration/savevm.c       | 10 +++++-----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/migration/global_state.c b/migration/global_state.c
index 4e2a9d8ec0..8ee15dbb06 100644
--- a/migration/global_state.c
+++ b/migration/global_state.c
@@ -131,7 +131,7 @@ static const VMStateDescription vmstate_globalstate = {
     .post_load = global_state_post_load,
     .pre_save = global_state_pre_save,
     .needed = global_state_needed,
-    .fields = (VMStateField[]) {
+    .fields = (const VMStateField[]) {
         VMSTATE_UINT32(size, GlobalState),
         VMSTATE_BUFFER(runstate, GlobalState),
         VMSTATE_END_OF_LIST()
diff --git a/migration/savevm.c b/migration/savevm.c
index 77a81937cd..a42469bcc3 100644
--- a/migration/savevm.c
+++ b/migration/savevm.c
@@ -438,7 +438,7 @@ static const VMStateDescription vmstate_target_page_bits = {
     .version_id = 1,
     .minimum_version_id = 1,
     .needed = vmstate_target_page_bits_needed,
-    .fields = (VMStateField[]) {
+    .fields = (const VMStateField[]) {
         VMSTATE_UINT32(target_page_bits, SaveState),
         VMSTATE_END_OF_LIST()
     }
@@ -454,7 +454,7 @@ static const VMStateDescription vmstate_capabilites = {
     .version_id = 1,
     .minimum_version_id = 1,
     .needed = vmstate_capabilites_needed,
-    .fields = (VMStateField[]) {
+    .fields = (const VMStateField[]) {
         VMSTATE_UINT32_V(caps_count, SaveState, 1),
         VMSTATE_VARRAY_UINT32_ALLOC(capabilities, SaveState, caps_count, 1,
                                     vmstate_info_capability,
@@ -499,7 +499,7 @@ static const VMStateDescription vmstate_uuid = {
     .minimum_version_id = 1,
     .needed = vmstate_uuid_needed,
     .post_load = vmstate_uuid_post_load,
-    .fields = (VMStateField[]) {
+    .fields = (const VMStateField[]) {
         VMSTATE_UINT8_ARRAY_V(uuid.data, SaveState, sizeof(QemuUUID), 1),
         VMSTATE_END_OF_LIST()
     }
@@ -512,12 +512,12 @@ static const VMStateDescription vmstate_configuration = {
     .post_load = configuration_post_load,
     .pre_save = configuration_pre_save,
     .post_save = configuration_post_save,
-    .fields = (VMStateField[]) {
+    .fields = (const VMStateField[]) {
         VMSTATE_UINT32(len, SaveState),
         VMSTATE_VBUFFER_ALLOC_UINT32(name, SaveState, 0, NULL, len),
         VMSTATE_END_OF_LIST()
     },
-    .subsections = (const VMStateDescription *[]) {
+    .subsections = (const VMStateDescription * const []) {
         &vmstate_target_page_bits,
         &vmstate_capabilites,
         &vmstate_uuid,
-- 
2.34.1

Re: [PATCH 66/71] migration: Constify VMState

Posted by Juan Quintela 1 year ago

Richard Henderson <richard.henderson@linaro.org> wrote:
> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Juan Quintela <quintela@redhat.com>


> ---
>  migration/global_state.c |  2 +-
>  migration/savevm.c       | 10 +++++-----
>  2 files changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/migration/global_state.c b/migration/global_state.c
> index 4e2a9d8ec0..8ee15dbb06 100644
> --- a/migration/global_state.c
> +++ b/migration/global_state.c
> @@ -131,7 +131,7 @@ static const VMStateDescription vmstate_globalstate = {
>      .post_load = global_state_post_load,
>      .pre_save = global_state_pre_save,
>      .needed = global_state_needed,
> -    .fields = (VMStateField[]) {
> +    .fields = (const VMStateField[]) {

I would really like to have an initializer that is nicer than this.

The only thing that I have come up with is declaring it as its own variable,
but that that is ugly for other reasons.

Later, Juan.