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accel/kvm: Use negative KVM type for error propagation

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On MIPS, kvm_arch_get_default_type() returns a negative value when an
error occurred so handle the case. Also, let other machines return
negative values when errors occur and declare returning a negative
value as the correct way to propagate an error that happened when
determining KVM type.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-id: 20230727073134.134102-5-akihiko.odaki@daynix.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
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 17:31:03 +01:00 • committed by Peter Maydell
parent 875b3eb88f
commit bc3e41a0e8
3 changed files with 7 additions and 2 deletions
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5
accel/kvm/kvm-all.c
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@ -2527,6 +2527,11 @@ static int kvm_init(MachineState *ms)
type = kvm_arch_get_default_type(ms);
}
if (type < 0) {
ret = -EINVAL;
goto err;
}
do {
ret = kvm_ioctl(s, KVM_CREATE_VM, type);
} while (ret == -EINTR);