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67730e6c53
Use the kernel's canonical $(ARCH) paths instead of the raw target triple for KVM selftests directories. KVM selftests are quite nearly the only place in the entire kernel that using the target triple for directories, tools/testing/selftests/drivers/s390x being the lone holdout. Using the kernel's preferred nomenclature eliminates the minor, but annoying, friction of having to translate to KVM's selftests directories, e.g. for pattern matching, opening files, running selftests, etc. Opportunsitically delete file comments that reference the full path of the file, as they are obviously prone to becoming stale, and serve no known purpose. Reviewed-by: Muhammad Usama Anjum <usama.anjum@collabora.com> Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com> Acked-by: Andrew Jones <ajones@ventanamicro.com> Link: https://lore.kernel.org/r/20241128005547.4077116-16-seanjc@google.com Signed-off-by: Sean Christopherson <seanjc@google.com>
70 lines
2.1 KiB
Bash
Executable File
70 lines
2.1 KiB
Bash
Executable File
#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0-only */
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#
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# Wrapper script which performs setup and cleanup for nx_huge_pages_test.
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# Makes use of root privileges to set up huge pages and KVM module parameters.
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#
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# Copyright (C) 2022, Google LLC.
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set -e
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NX_HUGE_PAGES=$(cat /sys/module/kvm/parameters/nx_huge_pages)
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NX_HUGE_PAGES_RECOVERY_RATIO=$(cat /sys/module/kvm/parameters/nx_huge_pages_recovery_ratio)
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NX_HUGE_PAGES_RECOVERY_PERIOD=$(cat /sys/module/kvm/parameters/nx_huge_pages_recovery_period_ms)
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HUGE_PAGES=$(cat /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages)
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# If we're already root, the host might not have sudo.
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if [ $(whoami) == "root" ]; then
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function do_sudo () {
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"$@"
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}
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else
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function do_sudo () {
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sudo "$@"
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}
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fi
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set +e
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function sudo_echo () {
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echo "$1" | do_sudo tee -a "$2" > /dev/null
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}
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NXECUTABLE="$(dirname $0)/nx_huge_pages_test"
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sudo_echo test /dev/null || exit 4 # KSFT_SKIP=4
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(
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set -e
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sudo_echo 1 /sys/module/kvm/parameters/nx_huge_pages
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sudo_echo 1 /sys/module/kvm/parameters/nx_huge_pages_recovery_ratio
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sudo_echo 100 /sys/module/kvm/parameters/nx_huge_pages_recovery_period_ms
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sudo_echo "$(( $HUGE_PAGES + 3 ))" /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
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# Test with reboot permissions
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if [ $(whoami) == "root" ] || sudo setcap cap_sys_boot+ep $NXECUTABLE 2> /dev/null; then
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echo Running test with CAP_SYS_BOOT enabled
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$NXECUTABLE -t 887563923 -p 100 -r
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test $(whoami) == "root" || sudo setcap cap_sys_boot-ep $NXECUTABLE
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else
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echo setcap failed, skipping nx_huge_pages_test with CAP_SYS_BOOT enabled
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fi
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# Test without reboot permissions
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if [ $(whoami) != "root" ] ; then
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echo Running test with CAP_SYS_BOOT disabled
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$NXECUTABLE -t 887563923 -p 100
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else
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echo Running as root, skipping nx_huge_pages_test with CAP_SYS_BOOT disabled
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fi
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)
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RET=$?
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sudo_echo "$NX_HUGE_PAGES" /sys/module/kvm/parameters/nx_huge_pages
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sudo_echo "$NX_HUGE_PAGES_RECOVERY_RATIO" /sys/module/kvm/parameters/nx_huge_pages_recovery_ratio
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sudo_echo "$NX_HUGE_PAGES_RECOVERY_PERIOD" /sys/module/kvm/parameters/nx_huge_pages_recovery_period_ms
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sudo_echo "$HUGE_PAGES" /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
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exit $RET
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