Re: [PATCH] x86/paravirt: Disable virt spinlock when CONFIG_PARAVIRT_SPINLOCKS disabled

From: Dave Hansen
Date: Thu May 23 2024 - 14:45:09 EST


On 5/23/24 11:39, Jürgen Groß wrote:
>>
>> Let's just keep it simple.  How about the attached patch?
>
> Simple indeed. The attachment is empty. 😛

Let's try this again.diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
index 5358d43886ad..c193c9e60a1b 100644
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -55,8 +55,7 @@ DEFINE_STATIC_KEY_TRUE(virt_spin_lock_key);

void __init native_pv_lock_init(void)
{
- if (IS_ENABLED(CONFIG_PARAVIRT_SPINLOCKS) &&
- !boot_cpu_has(X86_FEATURE_HYPERVISOR))
+ if (!boot_cpu_has(X86_FEATURE_HYPERVISOR))
static_branch_disable(&virt_spin_lock_key);
}