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From 088ba382d7a099ddbebe37e5486ce648e24266db Mon Sep 17 00:00:00 2001
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Message-Id: <088ba382d7a099ddbebe37e5486ce648e24266db@dist-git>
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From: Michal Privoznik <mprivozn@redhat.com>
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Date: Mon, 21 Mar 2022 17:09:40 +0100
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Subject: [PATCH] qemu_validate: Validate prealloc threads against qemuCpas
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Only fairly new QEMUs are capable of user provided number of
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preallocation threads. Validate this assumption.
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Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
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Reviewed-by: Martin Kletzander <mkletzan@redhat.com>
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(cherry picked from commit 75a4e0165ef199809974e97b507d3953e1de01d1)
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Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2067126
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Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
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---
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src/qemu/qemu_validate.c | 7 +++++++
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1 file changed, 7 insertions(+)
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diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
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index 3a69733f81..7bc14293d6 100644
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--- a/src/qemu/qemu_validate.c
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+++ b/src/qemu/qemu_validate.c
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@@ -739,6 +739,13 @@ qemuValidateDomainDefMemory(const virDomainDef *def,
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return -1;
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}
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+ if (mem->allocation_threads > 0 &&
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+ !virQEMUCapsGet(qemuCaps, QEMU_CAPS_MEMORY_BACKEND_PREALLOC_THREADS)) {
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+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
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+ _("preallocation threads are unsupported with this QEMU"));
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+ return -1;
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+ }
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+
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if (mem->source == VIR_DOMAIN_MEMORY_SOURCE_ANONYMOUS) {
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virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
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_("hugepages are not allowed with anonymous "
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--
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2.35.1
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