> -extern inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) &= ~_PAGE_RW; return pte; }
> extern inline pte_t pte_rdprotect(pte_t pte) { pte_val(pte) &= ~_PAGE_USER; return pte; }
> extern inline pte_t pte_exprotect(pte_t pte) { pte_val(pte) &= ~_PAGE_USER; return pte; }
> extern inline pte_t pte_mkclean(pte_t pte) { pte_val(pte) &= ~_PAGE_DIRTY; return pte; }
> extern inline pte_t pte_mkold(pte_t pte) { pte_val(pte) &= ~_PAGE_ACCESSED; return pte; }
> -extern inline pte_t pte_mkwrite(pte_t pte) { pte_val(pte) |= _PAGE_RW; return pte; }
> extern inline pte_t pte_mkread(pte_t pte) { pte_val(pte) |= _PAGE_USER; return pte; }
> extern inline pte_t pte_mkexec(pte_t pte) { pte_val(pte) |= _PAGE_USER; return pte; }
> extern inline pte_t pte_mkdirty(pte_t pte) { pte_val(pte) |= _PAGE_DIRTY; return pte; }
> extern inline pte_t pte_mkyoung(pte_t pte) { pte_val(pte) |= _PAGE_ACCESSED; return pte; }
> +
> +/*
> + * These are harder, as writability is two bits, not one..
> + */
> +extern inline int pte_write(pte_t pte) { return (pte_val(pte) & _PAGE_WRITABLE) == _PAGE_WRITABLE; }
> +extern inline pte_t pte_wrprotect(pte_t pte) { pte_val(pte) &= ~((pte_val(pte) & _PAGE_PRESENT) << 1); return pte; }
> +extern inline pte_t pte_mkwrite(pte_t pte) { pte_val(pte) |= _PAGE_RW; return pte; }
^^^^^^^^
Did you mean to put in _PAGE_WRITABLE here, or can the pte_mkwrite macro always assume the
PRESENT bit is already set?
Regards,
Bill
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