Re: [PATCH 1/1] i386 Encapsulate copying of pgd entries

[Chris Wright]

* zach@xxxxxxxxxx (zach@xxxxxxxxxx) wrote:
> +	memset(pgd, 0, USER_PTRS_PER_PGD*sizeof(pgd_t));
>  	if (PTRS_PER_PMD == 1)
>  		spin_lock_irqsave(&pgd_lock, flags);
>  
> -	memcpy((pgd_t *)pgd + USER_PTRS_PER_PGD,
> +	clone_pgd_range((pgd_t *)pgd + USER_PTRS_PER_PGD,
>  			swapper_pg_dir + USER_PTRS_PER_PGD,
> -			(PTRS_PER_PGD - USER_PTRS_PER_PGD) * sizeof(pgd_t));
> -
> +			KERNEL_PGD_PTRS);
>  	if (PTRS_PER_PMD > 1)
>  		return;
>  
>  	pgd_list_add(pgd);
>  	spin_unlock_irqrestore(&pgd_lock, flags);
> -	memset(pgd, 0, USER_PTRS_PER_PGD*sizeof(pgd_t));

Why memset was never done on PAE?

thanks,
-chris
-
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