Re: [RFC KVM 24/27] kvm/isolation: KVM page fault handler

[Peter Zijlstra]

On Mon, May 13, 2019 at 04:38:32PM +0200, Alexandre Chartre wrote:
> diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c
> index 46df4c6..317e105 100644
> --- a/arch/x86/mm/fault.c
> +++ b/arch/x86/mm/fault.c
> @@ -33,6 +33,10 @@
>  #define CREATE_TRACE_POINTS
>  #include <asm/trace/exceptions.h>
>  
> +bool (*kvm_page_fault_handler)(struct pt_regs *regs, unsigned long error_code,
> +			       unsigned long address);
> +EXPORT_SYMBOL(kvm_page_fault_handler);

NAK NAK NAK NAK

This is one of the biggest anti-patterns around.