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kvm: Introduce kvm_arch_get_default_type hook

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kvm_arch_get_default_type() returns the default KVM type. This hook is
particularly useful to derive a KVM type that is valid for "none"
machine model, which is used by libvirt to probe the availability of
KVM.

For MIPS, the existing mips_kvm_type() is reused. This function ensures
the availability of VZ which is mandatory to use KVM on the current
QEMU.

Cc: qemu-stable@nongnu.org
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-id: 20230727073134.134102-2-akihiko.odaki@daynix.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: added doc comment for new function]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Akihiko Odaki 2023-08-22 17:31:02 +01:00 • committed by Peter Maydell
parent a9c9bbee85
commit 5e0d65909c
10 changed files with 31 additions and 13 deletions
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4
accel/kvm/kvm-all.c
View file

@ -2458,7 +2458,7 @@ static int kvm_init(MachineState *ms)
KVMState *s;
const KVMCapabilityInfo *missing_cap;
int ret;
int type = 0;
int type;
uint64_t dirty_log_manual_caps;
qemu_mutex_init(&kml_slots_lock);
@ -2523,6 +2523,8 @@ static int kvm_init(MachineState *ms)
type = mc->kvm_type(ms, kvm_type);
} else if (mc->kvm_type) {
type = mc->kvm_type(ms, NULL);
} else {
type = kvm_arch_get_default_type(ms);
}
do {