dfed5f54d6
- qemu: enable overcommit_memory while start cvm Signed-off-by: ikarosYuuki <tujipei@huawei.com> (cherry picked from commit 8e920e9de2c12be1b438cef31828997b17f63eda)
37 lines
1.3 KiB
Diff
37 lines
1.3 KiB
Diff
From 90b6a01fe7433e7d5ee3fc2e5eac334e2905fed9 Mon Sep 17 00:00:00 2001
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From: ikarosYuuki <tujipei@huawei.com>
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Date: Tue, 9 Jul 2024 22:03:05 +0800
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Subject: [PATCH] qemu: enable overcommit_memory while start cvm In case of
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asymmetric memory numa, starting cvm with huge memory might be prevented by
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host kernel because of non-secure memory smaller than secure memory in the
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same numa. Ensuring the normal launch of cvm, libvirt need to enable
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overcommit_memory feature by writing the 1 to overcommit_memory system file.
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Signed-off-by: ikarosYuuki <tujipei@huawei.com>
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---
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src/qemu/qemu_driver.c | 8 ++++++++
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1 file changed, 8 insertions(+)
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diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
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index 1e3f63a39a..823ffbc673 100644
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--- a/src/qemu/qemu_driver.c
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+++ b/src/qemu/qemu_driver.c
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@@ -7424,6 +7424,14 @@ qemuDomainObjStart(virConnectPtr conn,
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}
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}
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+ if (vm->def->cvm) {
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+ if (virFileWriteStr("/proc/sys/vm/overcommit_memory", "1", 0)) {
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+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
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+ _("Failed to enable overcommit_memory"));
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+ return -1;
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+ }
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+ }
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+
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ret = qemuProcessStart(conn, driver, vm, NULL, asyncJob,
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NULL, -1, NULL, NULL,
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VIR_NETDEV_VPORT_PROFILE_OP_CREATE, start_flags);
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--
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2.31.1.windows.1
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