Re: [PATCH 5/5] x86: EFI memory mapping changes according tochanges to ioremap and c_p_a

From: Ingo Molnar
Date: Thu Jan 31 2008 - 07:18:56 EST



* Huang, Ying <ying.huang@xxxxxxxxx> wrote:

> + /* Assume pages are mapped as WB */
> + if (mode == IOR_MODE_UNCACHED)
> + set_memory_uc(md->virt_addr, md->num_pages);
> + /* Assume pages are mapped as unexecutable */
> + if ((__supported_pte_mask & _PAGE_NX) &&
> + xmode == IOR_XMODE_EXEC)
> + set_memory_x(md->virt_addr, md->num_pages);

hm, why is the check for __supported_pte_mask needed? That is already
listened to in set_memory_x(). [if not then it's an ioremap bug that we
want to fix.]

> -static int ioremap_change_attr(unsigned long paddr, unsigned long size,
> - enum ioremap_mode mode,
> - enum ioremap_xmode xmode)
> +int ioremap_change_attr(unsigned long paddr, unsigned long size,
> + enum ioremap_mode mode,
> + enum ioremap_xmode xmode)

hm, there should be no need to use this raw API.

Ingo
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