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Mon, 23 Oct 2023 20:37:13 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id cJHYJXnZNmV1JQAAMHmgww (envelope-from ); Mon, 23 Oct 2023 20:37:13 +0000 From: Fabiano Rosas To: qemu-devel@nongnu.org Cc: berrange@redhat.com, armbru@redhat.com, Juan Quintela , Peter Xu , Leonardo Bras , Claudio Fontana Subject: [PATCH v2 24/29] migration/ram: Ignore multifd flush when doing fixed-ram migration Date: Mon, 23 Oct 2023 17:36:03 -0300 Message-Id: <20231023203608.26370-25-farosas@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20231023203608.26370-1-farosas@suse.de> References: <20231023203608.26370-1-farosas@suse.de> MIME-Version: 1.0 Authentication-Results: smtp-out1.suse.de; none X-Spam-Score: -1.75 X-Spamd-Result: default: False [-1.75 / 50.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; R_MISSING_CHARSET(2.50)[]; MIME_GOOD(-0.10)[text/plain]; BROKEN_CONTENT_TYPE(1.50)[]; NEURAL_HAM_LONG(-3.00)[-1.000]; DKIM_SIGNED(0.00)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-1.00)[-1.000]; RCPT_COUNT_SEVEN(0.00)[7]; MID_CONTAINS_FROM(1.00)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; BAYES_HAM(-2.65)[98.44%] Received-SPF: pass client-ip=195.135.220.28; envelope-from=farosas@suse.de; helo=smtp-out1.suse.de X-Spam_score_int: -43 X-Spam_score: -4.4 X-Spam_bar: ---- X-Spam_report: (-4.4 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_MED=-2.3, 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Some functionalities of multifd are incompatible with the 'fixed-ram' migration format. The MULTIFD_FLUSH flag in particular is not used because in fixed-ram there is no sinchronicity between migration source and destination so there is not need for a sync packet. In fact, fixed-ram disables packets in multifd as a whole. Make sure RAM_SAVE_FLAG_MULTIFD_FLUSH is never emitted when fixed-ram is enabled. Signed-off-by: Fabiano Rosas --- migration/ram.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/migration/ram.c b/migration/ram.c index 8e34c1b597..3497ed186a 100644 --- a/migration/ram.c +++ b/migration/ram.c @@ -1386,7 +1386,7 @@ static int find_dirty_block(RAMState *rs, PageSearchStatus *pss) pss->page = 0; pss->block = QLIST_NEXT_RCU(pss->block, next); if (!pss->block) { - if (migrate_multifd() && + if (!migrate_fixed_ram() && migrate_multifd() && !migrate_multifd_flush_after_each_section()) { QEMUFile *f = rs->pss[RAM_CHANNEL_PRECOPY].pss_channel; int ret = multifd_send_sync_main(f);