On 06/20/2013 11:47 AM, Borislav Petkov wrote: > > I guess we can do a top-down allocation, starting from the highest > virtual addresses: > > EFI_HIGHEST_ADDRESS > | > | size1 > | > --> region1 > | > | size2 > | > --> region2 > > ... > > and we make EFI_HIGHEST_ADDRESS be the same absolute number on every > system. > > hpa, is this close to what you had in mind? It would be prudent to > verify whether this will suit well with the kexec virtual space layout > though... > This would work really well, I think. The tricky part here is to pick a safe EFI_HIGHEST_ADDRESS as it is an ABI. My preference would be to make EFI_HIGHEST_ADDRESS = -4 GB, which is *not* what Windows uses, but will leave the high negative range clear, and allows a range where we can grow down without much risk of interfering with anything else. -hpa -- To unsubscribe from this list: send the line "unsubscribe linux-efi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
