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From: Peter Xu <peterx@redhat.com>
To: qemu-devel@nongnu.org
Cc: Fabiano Rosas <farosas@suse.de>,
	Stefan Hajnoczi <stefanha@redhat.com>,
	peterx@redhat.com, Li Zhijian <lizhijian@fujitsu.com>
Subject: [PULL 02/14] migration: disable RDMA + postcopy-ram
Date: Fri,  2 May 2025 12:41:29 -0400	[thread overview]
Message-ID: <20250502164141.747202-3-peterx@redhat.com> (raw)
In-Reply-To: <20250502164141.747202-1-peterx@redhat.com>

From: Li Zhijian <lizhijian@fujitsu.com>

It's believed that RDMA + postcopy-ram has been broken for a while.
Rather than spending time re-enabling it, let's simply disable it as a
trade-off.

Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Message-ID: <20250305062825.772629-4-lizhijian@fujitsu.com>
Signed-off-by: Fabiano Rosas <farosas@suse.de>
---
 migration/options.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/migration/options.c b/migration/options.c
index 1f3602839d..4ba8fcb7dc 100644
--- a/migration/options.c
+++ b/migration/options.c
@@ -458,6 +458,10 @@ bool migrate_rdma_caps_check(bool *caps, Error **errp)
         error_setg(errp, "RDMA and multifd can't be used together");
         return false;
     }
+    if (caps[MIGRATION_CAPABILITY_POSTCOPY_RAM]) {
+        error_setg(errp, "RDMA and postcopy-ram can't be used together");
+        return false;
+    }
 
     return true;
 }
-- 
2.48.1



  parent reply	other threads:[~2025-05-02 16:44 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-05-02 16:41 [PULL 00/14] Migration 20250502 patches Peter Xu
2025-05-02 16:41 ` [PULL 01/14] migration: check RDMA and capabilities are compatible on both sides Peter Xu
2025-05-02 16:41 ` Peter Xu [this message]
2025-05-02 16:41 ` [PULL 03/14] migration/rdma: Remove redundant migration_in_postcopy checks Peter Xu
2025-05-02 16:41 ` [PULL 04/14] migration: Unfold control_save_page() Peter Xu
2025-05-02 16:41 ` [PULL 05/14] migration: Add qtest for migration over RDMA Peter Xu
2025-05-02 16:41 ` [PULL 06/14] migration: Fix latent bug in migrate_params_test_apply() Peter Xu
2025-05-02 16:41 ` [PULL 07/14] migration/multifd: move macros to multifd header Peter Xu
2025-05-02 16:41 ` [PULL 08/14] migration: refactor channel discovery mechanism Peter Xu
2025-05-02 16:41 ` [PULL 09/14] migration: Add save_postcopy_prepare() savevm handler Peter Xu
2025-05-02 16:41 ` [PULL 10/14] migration/ram: Implement save_postcopy_prepare() Peter Xu
2025-05-02 16:41 ` [PULL 11/14] tests/qtest/migration: consolidate set capabilities Peter Xu
2025-05-02 16:41 ` [PULL 12/14] migration/postcopy: Spatial locality page hint for preempt mode Peter Xu
2025-05-02 16:41 ` [PULL 13/14] migration/rdma: Remove qemu_rdma_broken_ipv6_kernel Peter Xu
2025-05-02 16:41 ` [PULL 14/14] scripts/vmstate-static-checker.py: Allow new name for ghes_addr_le field Peter Xu
2025-05-06 13:58 ` [PULL 00/14] Migration 20250502 patches Stefan Hajnoczi

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