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Kernel: Move super_pages section into the bottom 16MB

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This ensures that pages returned by
MM.allocate_supervisor_physical_page() have a physical address that
is in the bottom 16MB and can thus be used by the SB16 driver for DMA.

Fixes #8092.
This commit is contained in:
Gunnar Beutner 2021-06-17 19:27:05 +02:00 • committed by Andreas Kling
parent b007898c35
commit 017c5fc7d9
1 changed files with 10 additions and 3 deletions
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13
Kernel/linker.ld
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@ -8,10 +8,19 @@ SECTIONS
start_of_kernel_image = .; start_of_kernel_image = .;
.text ALIGN(4K) : AT (ADDR(.text) - KERNEL_VIRTUAL_BASE) .boot ALIGN(4K) : AT (ADDR(.boot) - KERNEL_VIRTUAL_BASE)
{ {
$<TARGET_OBJECTS:boot> $<TARGET_OBJECTS:boot>
*(.multiboot) *(.multiboot)
}
.super_pages ALIGN(4K) : AT (ADDR(.super_pages) - KERNEL_VIRTUAL_BASE)
{
*(.super_pages)
}
.text ALIGN(4K) : AT (ADDR(.text) - KERNEL_VIRTUAL_BASE)
{
start_of_kernel_text = .; start_of_kernel_text = .;
start_of_safemem_text = .; start_of_safemem_text = .;
@ -70,8 +79,6 @@ SECTIONS
. = ALIGN(4K); . = ALIGN(4K);
*(.heap) *(.heap)
. = ALIGN(4K);
*(.super_pages)
} }
end_of_kernel_image = .; end_of_kernel_image = .;