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SubjectRe: [PATCH 1/1] i386 Encapsulate copying of pgd entries
* zach@vmware.com (zach@vmware.com) 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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