Re: [PATCH 6/6] x86: fixes some bugs about EFI memory map handling

From: Ingo Molnar
Date: Fri Jan 25 2008 - 04:32:05 EST



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

> This patch fixes some bugs of EFI memory handing code.
>
> - On x86_64, it is possible that EFI memory map can not be mapped via
> identity map, so efi_map_memmap is removed, just use early_ioremap.
>
> - On i386, the EFI memory map mapping take effect cross paging_init,
> so it is not necessary to use efi_map_memmap.
>
> - EFI memory map is unmapped in efi_enter_virtual_mode to avoid
> early_ioremap leak.

thanks, applied.

btw., it would be nice to consolidate this some more. Why is there a
separate efi_ioremap(), which is mapped to ioremap() on 32-bit, and
which is mapped to a fixmap based special mapper on 64-bit?

To me it appears this wants to be ioremap() on both 64-bit and 32-bit,
and we could remove efi_ioremap() altogether. Hm?

Ingo
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