nson
*From:* Andrew Fish via groups.io [mailto:afish=apple@groups.io]
*Sent:* Wednesday, November 9, 2022 at 11:20 AM
*To:* devel@edk2.groups.io, yoshinoyat...@163.com
*Subject:* [edk2-devel] Access 64bit address space in 32bit mode
On Nov 7, 2022,
Vincent,
Thanks! I’d forgotten about that path.
The other answer is defer the work to a DXE driver that runs 64-bit x86.
Thanks,
Andrew Fish
> On Nov 9, 2022, at 10:58 AM, vincent zimmer wrote:
>
> we have the challenge of 32-bit PEI needing to access 64-bit addresses to
> support 64-bit D
Hello
Is it possible to access 64bit address space in 32bit mode?
For example, opcode prefix 0x66/67 could let code running in 16bit mode to
access 32bit data/address.
Or, establishing page table is a must requirement for accessing 64bit address
space.
Thanks
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Grou
