Sam Ravnborg wrote:
+
+       . = 0;
+       .text           : { *(.text*) }
+
+       . = ALIGN(16);
Why?

It's good practice to have at least paragraph (segment boundary) alignment between different types of data. In the case of the .bss, it also allows cleaning with rep;movsl.

It's technically not all that necessary (except for 4-byte alignment for the .bss), but it makes things easier to debug on the assembly level.

+       /* Adjust this as appropriate */
+       /* This allows 4 pages (16K) */
+       . = ASSERT(_end <= 0x4000, "Wakeup too big!");
PAGE_SIZE * 4?

Not really, because it's not at all related to the kernel page size; the reference to pages there is informal. If we go to a larger virtual page size we do NOT want this to change.

        -hpa
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