When FEAT_LPA2 is implemented the hardware supports increasing the
physical address space from 48-bit to 52-bit.
As older kernels only support a 48-bit physical address space limit
where the kernel is loaded to this.
Sponsored by: Arm Ltd
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Buildable 59423 Build 56310: arc lint + arc unit
Event Timeline
| stand/efi/loader/copy.c | ||
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| 305 | The - 1 seems inconsistent with the amd64 case above. Which one is right? | |
| stand/efi/loader/copy.c | ||
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| 305 | BS->AllocatePages with AllocateMaxAddress can allocate pages where the uppermost address is less than or equal to this value. It probably doesn't matter to not have the - 1 as no pages above the 1G or 4G mark should be allocated in the amd64 case as they would have to be zero length. | |
| stand/efi/loader/copy.c | ||
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| 305 | Then perhaps let's just use (1ul << 48) for consistency's sake? | |
| stand/efi/loader/copy.c | ||
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| 333 | Does this work? I thought that cpp #if only takes arithmetic expressions + defined(). | |