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Berrange" , Markus Armbruster , Steve Sistare Subject: [PATCH V2 03/11] migration: save cpr mode Date: Sun, 30 Jun 2024 12:40:26 -0700 Message-Id: <1719776434-435013-4-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1719776434-435013-1-git-send-email-steven.sistare@oracle.com> References: <1719776434-435013-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-06-30_16,2024-06-28_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 adultscore=0 bulkscore=0 mlxlogscore=999 phishscore=0 spamscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2406180000 definitions=main-2406300157 X-Proofpoint-GUID: 3rqkujtzAlanIjf-eP2bWH66TW-GJ6T2 X-Proofpoint-ORIG-GUID: 3rqkujtzAlanIjf-eP2bWH66TW-GJ6T2 Received-SPF: pass client-ip=205.220.165.32; envelope-from=steven.sistare@oracle.com; helo=mx0a-00069f02.pphosted.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=-0.01, RCVD_IN_MSPIKE_WL=-0.01, 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Save the mode in CPR state, so the user does not need to explicitly specify it for the target. Modify migrate_mode() so it returns the incoming mode on the target. Signed-off-by: Steve Sistare --- include/migration/cpr.h | 7 +++++++ migration/cpr.c | 23 ++++++++++++++++++++++- migration/migration.c | 1 + migration/options.c | 9 +++++++-- 4 files changed, 37 insertions(+), 3 deletions(-) diff --git a/include/migration/cpr.h b/include/migration/cpr.h index 8e7e705..42b4019 100644 --- a/include/migration/cpr.h +++ b/include/migration/cpr.h @@ -8,6 +8,13 @@ #ifndef MIGRATION_CPR_H #define MIGRATION_CPR_H +#include "qapi/qapi-types-migration.h" + +#define MIG_MODE_NONE MIG_MODE__MAX + +MigMode cpr_get_incoming_mode(void); +void cpr_set_incoming_mode(MigMode mode); + typedef int (*cpr_walk_fd_cb)(int fd); void cpr_save_fd(const char *name, int id, int fd); void cpr_delete_fd(const char *name, int id); diff --git a/migration/cpr.c b/migration/cpr.c index 313e74e..1c296c6 100644 --- a/migration/cpr.c +++ b/migration/cpr.c @@ -21,10 +21,23 @@ typedef QLIST_HEAD(CprFdList, CprFd) CprFdList; typedef struct CprState { + MigMode mode; CprFdList fds; } CprState; -static CprState cpr_state; +static CprState cpr_state = { + .mode = MIG_MODE_NONE, +}; + +MigMode cpr_get_incoming_mode(void) +{ + return cpr_state.mode; +} + +void cpr_set_incoming_mode(MigMode mode) +{ + cpr_state.mode = mode; +} /****************************************************************************/ @@ -124,11 +137,19 @@ void cpr_resave_fd(const char *name, int id, int fd) /*************************************************************************/ #define CPR_STATE "CprState" +static int cpr_state_presave(void *opaque) +{ + cpr_state.mode = migrate_mode(); + return 0; +} + static const VMStateDescription vmstate_cpr_state = { .name = CPR_STATE, .version_id = 1, .minimum_version_id = 1, + .pre_save = cpr_state_presave, .fields = (VMStateField[]) { + VMSTATE_UINT32(mode, CprState), VMSTATE_QLIST_V(fds, CprState, 1, vmstate_cpr_fd, CprFd, next), VMSTATE_END_OF_LIST() } diff --git a/migration/migration.c b/migration/migration.c index e394ad7..0f47765 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -411,6 +411,7 @@ void migration_incoming_state_destroy(void) mis->postcopy_qemufile_dst = NULL; } + cpr_set_incoming_mode(MIG_MODE_NONE); yank_unregister_instance(MIGRATION_YANK_INSTANCE); } diff --git a/migration/options.c b/migration/options.c index 645f550..305397a 100644 --- a/migration/options.c +++ b/migration/options.c @@ -22,6 +22,7 @@ #include "qapi/qmp/qnull.h" #include "sysemu/runstate.h" #include "migration/colo.h" +#include "migration/cpr.h" #include "migration/misc.h" #include "migration.h" #include "migration-stats.h" @@ -758,8 +759,12 @@ uint64_t migrate_max_postcopy_bandwidth(void) MigMode migrate_mode(void) { - MigrationState *s = migrate_get_current(); - MigMode mode = s->parameters.mode; + MigMode mode = cpr_get_incoming_mode(); + + if (mode == MIG_MODE_NONE) { + MigrationState *s = migrate_get_current(); + mode = s->parameters.mode; + } assert(mode >= 0 && mode < MIG_MODE__MAX); return mode;