Zachary Amsden wrote:
H. Peter Anvin wrote:
+ /*
+ * End condition: we must map up to and including
+ * INIT_MAP_BEYOND_END bytes beyond the end of our
+ * own page tables; 0x1000 is the size of the page
+ * table were about to write, and +0x007 is the
+ * attribute bits.
+ */
+ leal (INIT_MAP_BEYOND_END+0x1000+0x007)(%edi),%ebp
hrmm? Shouldn't that still be INIT_MAP_BEYOND_END+0x0007? Seems you
are mapping 4M more than you need.
4K, not 4M. This is an actual address, not an indirection.
However, the expression is correct, because it needs to refer to the
termination address *after* the current page table is written -- you can
think of it as having already allocated 4K for a page table that it is
about to be generated.
-hpa
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