9f7425c152
Tests arm64 specific, contiguous bit based large pages as well. Change-Id: I09edad8cfde6c23a259f1f32cfc97974d9cb63c3
89 lines
2.0 KiB
Plaintext
89 lines
2.0 KiB
Plaintext
==========
|
|
How to run
|
|
==========
|
|
|
|
(1) cd <mckernel> && patch -p0 < <mckernel>/test/large_page/large_page.patch
|
|
(2) Build McKernel
|
|
(3) cd <mckernel>/test/large_page/<arch> && make test
|
|
|
|
============
|
|
What to test
|
|
============
|
|
|
|
Check the large page allocation with the following settings.
|
|
|
|
------
|
|
x86_64
|
|
------
|
|
|
|
ID Program sections Size
|
|
---------------------------------------
|
|
001 mmap + THP 2M, 1G
|
|
101 mmap + flag 2M, 1G
|
|
201 shmget + THP 2M, 1G
|
|
301 shmget + flag 2M, 1G
|
|
401 heap 2M
|
|
402 heap 1G
|
|
501 .data, .bss, stack 2M
|
|
601 mmap + hugetlbfs 2M, 1G
|
|
--------------------------------------
|
|
|
|
* 1 GiB for .data, .bss, stack is not tested because it's impossible to
|
|
align symbol to 1 GiB due to relocation restrictions.
|
|
|
|
-----
|
|
arm64
|
|
-----
|
|
|
|
(1) Granule size: 64 KiB
|
|
|
|
ID Program sections Size
|
|
---------------------------------------
|
|
001 mmap + THP 2M, 512M
|
|
101 mmap + flag 2M, 512M
|
|
201 shmget + THP 2M, 512M
|
|
301 shmget + flag 2M, 512M
|
|
401 heap 2M
|
|
402 heap 512M
|
|
501 .data, .bss, stack 2M
|
|
502 .data, .bss 512M
|
|
601 mmap + hugetlbfs 2M, 512M
|
|
|
|
* 512 MiB for stack is not tested because it's impossible to
|
|
align symbol to 512 MiB due to relocation restrictions.
|
|
|
|
(2) Granule size: 4 KiB
|
|
|
|
ID Program sections Size
|
|
---------------------------------------
|
|
001 mmap + THP 64K, 2M, 32M, 1G
|
|
101 mmap + flag 64K, 2M, 32M, 1G
|
|
201 shmget + THP 64K, 2M, 32M, 1G
|
|
301 shmget + flag 64K, 2M, 32M, 1G
|
|
401 heap 64K
|
|
402 heap 2M
|
|
403 heap 32M
|
|
404 heap 1G
|
|
501 .data, .bss, stack 64K
|
|
502 .data, .bss, stack 2M
|
|
503 .data, .bss, stack 32M
|
|
504 .data, .bss 1G
|
|
601 mmap + hugetlbfs 64K, 2M, 32M, 1G
|
|
|
|
* 1 GiB for stack is not tested because it's impossible to
|
|
align symbol to 1 GiB due to relocation restrictions.
|
|
|
|
======
|
|
Detail
|
|
======
|
|
|
|
With the patch, McKernel does the followings for the test:
|
|
(1) Align heap with the value passed via mcexec -h option
|
|
(2) Map stack and .data with the page with the size of the value
|
|
passed via mcexec -s option
|
|
(3) Enable THP via shmget
|
|
(5) Report large page allocations
|
|
|
|
Alignment of symbols in .data, .bss is done by using the modified
|
|
linker scripts.
|