[v1] Misc HW patches for 2025-09-02

[PULL 06/39] migration/vfio: compile only once

Philippe Mathieu-Daudé posted 39 patches 3 weeks, 5 days ago

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Maintainers: "Philippe Mathieu-Daudé" <philmd@linaro.org>, Richard Henderson <richard.henderson@linaro.org>, Paolo Bonzini <pbonzini@redhat.com>, "Daniel P. Berrangé" <berrange@redhat.com>, "Alex Bennée" <alex.bennee@linaro.org>, Thomas Huth <thuth@redhat.com>, Markus Armbruster <armbru@redhat.com>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Peter Maydell <peter.maydell@linaro.org>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Alistair Francis <alistair@alistair23.me>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Glenn Miles <milesg@linux.ibm.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Eduardo Habkost <eduardo@habkost.net>, John Snow <jsnow@redhat.com>, Huacai Chen <chenhuacai@kernel.org>, Aurelien Jarno <aurelien@aurel32.net>, Francisco Iglesias <francisco.iglesias@amd.com>, Jason Wang <jasowang@redhat.com>, Dmitry Fleytman <dmitry.fleytman@gmail.com>, Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp>, Nicholas Piggin <npiggin@gmail.com>, Aditya Gupta <adityag@linux.ibm.com>, Fam Zheng <fam@euphon.net>, Bin Meng <bmeng.cn@gmail.com>, Laurent Vivier <laurent@vivier.eu>, Peter Xu <peterx@redhat.com>, Fabiano Rosas <farosas@suse.de>, Alex Williamson <alex.williamson@redhat.com>, "Cédric Le Goater" <clg@redhat.com>, Pierrick Bouvier <pierrick.bouvier@linaro.org>, Aleksandar Rikalo <arikalo@gmail.com>, Chinmay Rath <rathc@linux.ibm.com>, Harsh Prateek Bora <harshpb@linux.ibm.com>

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[PULL 06/39] migration/vfio: compile only once

Posted by Philippe Mathieu-Daudé 3 weeks, 5 days ago

From: Pierrick Bouvier <pierrick.bouvier@linaro.org>

Acked-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250730220435.1139101-3-pierrick.bouvier@linaro.org>
[PMD: Cover vfio-stub.c in MAINTAINERS]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
 MAINTAINERS           |  1 +
 migration/vfio-stub.c | 16 ++++++++++++++++
 migration/vfio.c      | 14 --------------
 migration/meson.build |  6 +++---
 4 files changed, 20 insertions(+), 17 deletions(-)
 create mode 100644 migration/vfio-stub.c

diff --git a/MAINTAINERS b/MAINTAINERS
index 8147fff3523..07c9f929d2b 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2268,6 +2268,7 @@ F: util/vfio-helpers.c
 F: include/hw/vfio/
 F: docs/devel/migration/vfio.rst
 F: qapi/vfio.json
+F: migration/vfio-stub.c
 F: tests/functional/aarch64/test_device_passthrough.py
 
 vfio-igd
diff --git a/migration/vfio-stub.c b/migration/vfio-stub.c
new file mode 100644
index 00000000000..f59ebe075dc
--- /dev/null
+++ b/migration/vfio-stub.c
@@ -0,0 +1,16 @@
+/*
+ * QEMU live migration - stubs for VFIO
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "qemu/osdep.h"
+#include "migration.h"
+
+void migration_populate_vfio_info(MigrationInfo *info)
+{
+}
+
+void migration_reset_vfio_bytes_transferred(void)
+{
+}
diff --git a/migration/vfio.c b/migration/vfio.c
index 0b64e49ef06..af6ae2c1e19 100644
--- a/migration/vfio.c
+++ b/migration/vfio.c
@@ -8,13 +8,8 @@
 #include "qemu/osdep.h"
 #include "qapi/qapi-types-migration.h"
 #include "migration.h"
-#include CONFIG_DEVICES
-
-#ifdef CONFIG_VFIO
 #include "hw/vfio/vfio-migration.h"
-#endif
 
-#ifdef CONFIG_VFIO
 void migration_populate_vfio_info(MigrationInfo *info)
 {
     if (vfio_migration_active()) {
@@ -27,12 +22,3 @@ void migration_reset_vfio_bytes_transferred(void)
 {
     vfio_migration_reset_bytes_transferred();
 }
-#else
-void migration_populate_vfio_info(MigrationInfo *info)
-{
-}
-
-void migration_reset_vfio_bytes_transferred(void)
-{
-}
-#endif
diff --git a/migration/meson.build b/migration/meson.build
index 45e9445f97d..0f71544a825 100644
--- a/migration/meson.build
+++ b/migration/meson.build
@@ -49,6 +49,6 @@ system_ss.add(when: zstd, if_true: files('multifd-zstd.c'))
 system_ss.add(when: qpl, if_true: files('multifd-qpl.c'))
 system_ss.add(when: uadk, if_true: files('multifd-uadk.c'))
 system_ss.add(when: qatzip, if_true: files('multifd-qatzip.c'))
-
-specific_ss.add(when: 'CONFIG_SYSTEM_ONLY',
-                if_true: files('vfio.c'))
+system_ss.add(when: 'CONFIG_VFIO',
+              if_true: files('vfio.c'),
+              if_false: files('vfio-stub.c'))
-- 
2.51.0