I think I understand... x86_cpu_change_kvm_default("svm", NULL) causes
the default of "off" to be removed for compat levels of 2.1 and older...
So what we actually want is either move that line to be applied for all
compat levels or remove them and also remove the default of "off". Like
below (but I want to test this first):
Index: qemu-2.5+dfsg/hw/i386/pc_piix.c
===================================================================
--- qemu-2.5+dfsg.orig/hw/i386/pc_piix.c 2016-04-21 11:24:12.000000000
+0200
+++ qemu-2.5+dfsg/hw/i386/pc_piix.c 2016-04-21 16:03:59.421505982 +0200
@@ -325,7 +325,6 @@ static void pc_compat_2_1(MachineState *
pc_compat_2_2(machine);
smbios_uuid_encoded = false;
- x86_cpu_change_kvm_default("svm", NULL);
pcms->enforce_aligned_dimm = false;
}
Index: qemu-2.5+dfsg/hw/i386/pc_q35.c
===================================================================
--- qemu-2.5+dfsg.orig/hw/i386/pc_q35.c 2015-12-12 13:16:02.000000000 +0100
+++ qemu-2.5+dfsg/hw/i386/pc_q35.c 2016-04-21 16:04:17.725505700 +0200
@@ -309,7 +309,6 @@ static void pc_compat_2_1(MachineState *
pc_compat_2_2(machine);
pcms->enforce_aligned_dimm = false;
smbios_uuid_encoded = false;
- x86_cpu_change_kvm_default("svm", NULL);
}
static void pc_compat_2_0(MachineState *machine)
Index: qemu-2.5+dfsg/target-i386/cpu.c
===================================================================
--- qemu-2.5+dfsg.orig/target-i386/cpu.c 2016-04-21 11:24:12.000000000
+0200
+++ qemu-2.5+dfsg/target-i386/cpu.c 2016-04-21 16:03:31.797506408 +0200
@@ -1380,7 +1380,6 @@ static PropValue kvm_default_props[] = {
{ "x2apic", "on" },
{ "acpi", "off" },
{ "monitor", "off" },
- { "svm", "off" },
{ NULL, NULL },
};
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https://bugs.launchpad.net/bugs/1561019
Title:
copied cpu flags don't match host cpu
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