On 22/05/2024 2:28 pm, Sean Christopherson wrote:
Add arch hooks that are invoked when KVM enables/disable virtualization.
x86 will use the hooks to register an "emergency disable" callback, which
is essentially an x86-specific shutdown notifier that is used when the
kernel is doing an emergency reboot/shutdown/kexec.
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
Reviewed-by: Kai Huang <kai.huang@xxxxxxxxx>
[...]
+
static int __kvm_enable_virtualization(void)
{
if (__this_cpu_read(hardware_enabled))
@@ -5604,6 +5614,8 @@ static int kvm_enable_virtualization(void)
if (kvm_usage_count++)
return 0;
+ kvm_arch_enable_virtualization();
+
r = cpuhp_setup_state(CPUHP_AP_KVM_ONLINE, "kvm/cpu:online",
kvm_online_cpu, kvm_offline_cpu);
Nit: is kvm_arch_pre_enable_virtualization() a better name?
