From: Maximiliano Sandoval <m.sandoval@proxmox.com>
To: pve-devel@lists.proxmox.com
Subject: [PATCH docs] qm: document potential host cpu type drawback
Date: Wed, 15 Jul 2026 15:01:30 +0200 [thread overview]
Message-ID: <20260715130131.397579-1-m.sandoval@proxmox.com> (raw)
Signed-off-by: Maximiliano Sandoval <m.sandoval@proxmox.com>
---
Notes:
This happened for example on Kernel 7.0.0 where the vmx-mbec is now enabled.
qm.adoc | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/qm.adoc b/qm.adoc
index 96ba68b..bca5792 100644
--- a/qm.adoc
+++ b/qm.adoc
@@ -482,6 +482,10 @@ cluster, choose the lowest compatible virtual QEMU CPU type.
NOTE: Live migrations between Intel and AMD host CPUs have no guarantee to work.
+WARNING: The 'host' CPU type can potentially enable new CPU features for the
+guest when the guest is restarted after a system upgrade. This can result in
+unexpected consequences.
+
See also
xref:chapter_qm_vcpu_list[List of AMD and Intel CPU Types as Defined in QEMU].
--
2.47.3
reply other threads:[~2026-07-15 13:01 UTC|newest]
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