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SubjectRe: [PATCH] NX protection for kernel data : fix 32 bits S3 suspend
Date
H. Peter Anvin <hpa@zytor.com> wrote:

> In static_protections() we have:
>
>> /*
>> * The BIOS area between 640k and 1Mb needs to be executable for
>> * PCI BIOS based config access (CONFIG_PCI_GOBIOS) support.
>> */

I don't think the CGA/MDA/VGA graphics memory areas should be executable,
and I doubt execute access to these areas is required - is it?

0xA000:0000 might be a BIOS area, if it is, you don't have a VGA and the
ROM will be exactly 64K. 0xB800 and 0xB000 SHOULD NOT be a ROM, nobody dared
to use it (I don't remember exactly where ROMs are searched).
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