blob: 41580751dc5113d9e853c833e7fbcec541655b42 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Copyright (C) 2022 Adam Sindelar (Meta) <adam@wowsignal.io>
#
# This is a test for mmap behavior with 5-level paging. This script wraps the
# real test to check that the kernel is configured to support at least 5
# pagetable levels.
# 1 means the test failed
exitcode=1
# Kselftest framework requirement - SKIP code is 4.
ksft_skip=4
fail()
{
echo "$1"
exit $exitcode
}
check_supported_x86_64()
{
local config="/proc/config.gz"
[[ -f "${config}" ]] || config="/boot/config-$(uname -r)"
[[ -f "${config}" ]] || fail "Cannot find kernel config in /proc or /boot"
# gzip -dcfq automatically handles both compressed and plaintext input.
# See man 1 gzip under '-f'.
local pg_table_levels=$(gzip -dcfq "${config}" | grep PGTABLE_LEVELS | cut -d'=' -f 2)
if [[ "${pg_table_levels}" -lt 5 ]]; then
echo "$0: PGTABLE_LEVELS=${pg_table_levels}, must be >= 5 to run this test"
exit $ksft_skip
fi
}
check_test_requirements()
{
# The test supports x86_64 and powerpc64. We currently have no useful
# eligibility check for powerpc64, and the test itself will reject other
# architectures.
case `uname -m` in
"x86_64")
check_supported_x86_64
;;
*)
return 0
;;
esac
}
check_test_requirements
./va_128TBswitch
|
