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Thu, 09 May 2024 10:00:52 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFLuhCxXYfgVg4UNoInB+G70igMmMs6E5mXCATPm8gie2OBVKaF78hm2Hh7bifBvgNNL7wzlA== X-Received: by 2002:aa7:c992:0:b0:572:b0a8:65fd with SMTP id 4fb4d7f45d1cf-573326eddfemr2325081a12.6.1715274051796; Thu, 09 May 2024 10:00:51 -0700 (PDT) From: Paolo Bonzini To: qemu-devel@nongnu.org Cc: thuth@redhat.com Subject: [PATCH 03/13] s390: move css_migration_enabled from machine to css.c Date: Thu, 9 May 2024 19:00:34 +0200 Message-ID: <20240509170044.190795-4-pbonzini@redhat.com> X-Mailer: git-send-email 2.45.0 In-Reply-To: <20240509170044.190795-1-pbonzini@redhat.com> References: <20240509170044.190795-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.133.124; envelope-from=pbonzini@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.581, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1715274243135100001 Content-Type: text/plain; charset="utf-8" The CSS subsystem uses global variables, just face the truth and use a variable also for whether the CSS vmstate is in use; remove the indirection of fetching it from the machine type, which makes the TCG code depend unnecessarily on the virtio-ccw machine. Signed-off-by: Paolo Bonzini --- include/hw/s390x/css.h | 6 ++++++ include/hw/s390x/s390-virtio-ccw.h | 7 ------- hw/s390x/css.c | 10 +++++++--- hw/s390x/s390-virtio-ccw.c | 15 +++------------ 4 files changed, 16 insertions(+), 22 deletions(-) diff --git a/include/hw/s390x/css.h b/include/hw/s390x/css.h index ba72ee3dd20..8289e458370 100644 --- a/include/hw/s390x/css.h +++ b/include/hw/s390x/css.h @@ -333,4 +333,10 @@ static inline int ccw_dstream_read_buf(CcwDataStream *= cds, void *buff, int len) #define ccw_dstream_read(cds, v) ccw_dstream_read_buf((cds), &(v), sizeof(= v)) #define ccw_dstream_write(cds, v) ccw_dstream_write_buf((cds), &(v), sizeo= f(v)) =20 +/** + * true if (vmstate based) migration of the channel subsystem + * is enabled, false if it is disabled. + */ +extern bool css_migration_enabled; + #endif diff --git a/include/hw/s390x/s390-virtio-ccw.h b/include/hw/s390x/s390-vir= tio-ccw.h index c1d46e78af8..c0494e511cb 100644 --- a/include/hw/s390x/s390-virtio-ccw.h +++ b/include/hw/s390x/s390-virtio-ccw.h @@ -43,7 +43,6 @@ struct S390CcwMachineClass { /*< public >*/ bool ri_allowed; bool cpu_model_allowed; - bool css_migration_enabled; bool hpage_1m_allowed; int max_threads; }; @@ -55,10 +54,4 @@ bool cpu_model_allowed(void); /* 1M huge page mappings allowed by the machine */ bool hpage_1m_allowed(void); =20 -/** - * Returns true if (vmstate based) migration of the channel subsystem - * is enabled, false if it is disabled. - */ -bool css_migration_enabled(void); - #endif diff --git a/hw/s390x/css.c b/hw/s390x/css.c index 295530963a6..b2d5327dbf4 100644 --- a/hw/s390x/css.c +++ b/hw/s390x/css.c @@ -23,6 +23,8 @@ #include "hw/s390x/s390-virtio-ccw.h" #include "hw/s390x/s390-ccw.h" =20 +bool css_migration_enabled =3D true; + typedef struct CrwContainer { CRW crw; QTAILQ_ENTRY(CrwContainer) sibling; @@ -180,7 +182,7 @@ static const VMStateDescription vmstate_orb =3D { =20 static bool vmstate_schdev_orb_needed(void *opaque) { - return css_migration_enabled(); + return css_migration_enabled; } =20 static const VMStateDescription vmstate_schdev_orb =3D { @@ -388,7 +390,7 @@ static int subch_dev_post_load(void *opaque, int versio= n_id) css_subch_assign(s->cssid, s->ssid, s->schid, s->devno, s); } =20 - if (css_migration_enabled()) { + if (css_migration_enabled) { /* No compat voodoo to do ;) */ return 0; } @@ -412,7 +414,9 @@ static int subch_dev_post_load(void *opaque, int versio= n_id) =20 void css_register_vmstate(void) { - vmstate_register(NULL, 0, &vmstate_css, &channel_subsys); + if (css_migration_enabled) { + vmstate_register(NULL, 0, &vmstate_css, &channel_subsys); + } } =20 IndAddr *get_indicator(hwaddr ind_addr, int len) diff --git a/hw/s390x/s390-virtio-ccw.c b/hw/s390x/s390-virtio-ccw.c index 1383e47eeb5..aa90703d518 100644 --- a/hw/s390x/s390-virtio-ccw.c +++ b/hw/s390x/s390-virtio-ccw.c @@ -275,11 +275,9 @@ static void ccw_init(MachineState *machine) s390_enable_css_support(s390_cpu_addr2state(0)); =20 ret =3D css_create_css_image(VIRTUAL_CSSID, true); - assert(ret =3D=3D 0); - if (css_migration_enabled()) { - css_register_vmstate(); - } + + css_register_vmstate(); =20 /* Create VirtIO network adapters */ s390_create_virtio_net(BUS(css_bus), mc->default_nic); @@ -741,7 +739,6 @@ static void ccw_machine_class_init(ObjectClass *oc, voi= d *data) =20 s390mc->ri_allowed =3D true; s390mc->cpu_model_allowed =3D true; - s390mc->css_migration_enabled =3D true; s390mc->hpage_1m_allowed =3D true; s390mc->max_threads =3D 1; mc->init =3D ccw_init; @@ -811,11 +808,6 @@ static const TypeInfo ccw_machine_info =3D { }, }; =20 -bool css_migration_enabled(void) -{ - return get_machine_class()->css_migration_enabled; -} - #define DEFINE_CCW_MACHINE(suffix, verstr, latest) = \ static void ccw_machine_##suffix##_class_init(ObjectClass *oc, = \ void *data) = \ @@ -1171,7 +1163,6 @@ static void ccw_machine_2_9_instance_options(MachineS= tate *machine) =20 static void ccw_machine_2_9_class_options(MachineClass *mc) { - S390CcwMachineClass *s390mc =3D S390_CCW_MACHINE_CLASS(mc); static GlobalProperty compat[] =3D { { TYPE_S390_STATTRIB, "migration-enabled", "off", }, { TYPE_S390_FLIC_COMMON, "migration-enabled", "off", }, @@ -1180,7 +1171,7 @@ static void ccw_machine_2_9_class_options(MachineClas= s *mc) ccw_machine_2_10_class_options(mc); compat_props_add(mc->compat_props, hw_compat_2_9, hw_compat_2_9_len); compat_props_add(mc->compat_props, compat, G_N_ELEMENTS(compat)); - s390mc->css_migration_enabled =3D false; + css_migration_enabled =3D false; } DEFINE_CCW_MACHINE(2_9, "2.9", false); =20 --=20 2.45.0