lkml.org 
[lkml]   [2022]   [Feb]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH] KVM: x86: Fix function address when kvm_x86_ops.func is NULL
From
On 2/22/22 07:25, Like Xu wrote:
> From: Like Xu <likexu@tencent.com>
>
> Fix the function address for __static_call_return0() which is used by
> static_call_update() when a func in struct kvm_x86_ops is NULL.
>
> Fixes: 5be2226f417d ("KVM: x86: allow defining return-0 static calls")
> Signed-off-by: Like Xu <likexu@tencent.com>

Sorry for the stupid question, but what breaks?

Paolo

> ---
> arch/x86/include/asm/kvm_host.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index 713e08f62385..312f5ee19514 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -1548,7 +1548,7 @@ static inline void kvm_ops_static_call_update(void)
> #define KVM_X86_OP_OPTIONAL __KVM_X86_OP
> #define KVM_X86_OP_OPTIONAL_RET0(func) \
> static_call_update(kvm_x86_##func, kvm_x86_ops.func ? : \
> - (void *) __static_call_return0);
> + (void *)&__static_call_return0);
> #include <asm/kvm-x86-ops.h>
> #undef __KVM_X86_OP
> }

\
 
 \ /
  Last update: 2022-02-22 09:34    [W:0.057 / U:0.280 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site