OpenCloudOS-Kernel/tools/testing/selftests/kvm/include
Yanan Wang 3b70c4d128 KVM: selftests: Add a helper to get system configured THP page size
If we want to have some tests about transparent hugepages, the system
configured THP hugepage size should better be known by the tests, which
can be used for kinds of alignment or guest memory accessing of vcpus...
So it makes sense to add a helper to get the transparent hugepage size.

With VM_MEM_SRC_ANONYMOUS_THP specified in vm_userspace_mem_region_add(),
we now stat /sys/kernel/mm/transparent_hugepage to check whether THP is
configured in the host kernel before madvise(). Based on this, we can also
read file /sys/kernel/mm/transparent_hugepage/hpage_pmd_size to get THP
hugepage size.

Signed-off-by: Yanan Wang <wangyanan55@huawei.com>
Reviewed-by: Ben Gardon <bgardon@google.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-Id: <20210330080856.14940-7-wangyanan55@huawei.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2021-04-20 04:18:52 -04:00
..
aarch64 kvm: selftests: introduce aarch64_vcpu_add_default 2019-06-05 14:14:45 +02:00
s390x KVM: selftests: sync_regs test for diag318 2020-12-10 13:36:05 +01:00
x86_64 KVM: x86: hyper-v: Make Hyper-V emulation enablement conditional 2021-02-09 08:39:56 -05:00
evmcs.h KVM: selftests: Fix build for evmcs.h 2020-05-06 06:51:36 -04:00
guest_modes.h KVM: selftests: Factor out guest mode code 2021-01-07 18:07:29 -05:00
kvm_util.h KVM: selftests: Make a generic helper to get vm guest mode strings 2021-04-20 04:18:52 -04:00
numaif.h KVM: selftests: Add missing header file needed by xAPIC IPI tests 2021-02-11 08:02:08 -05:00
perf_test_util.h KVM: selftests: Add backing src parameter to dirty_log_perf_test 2021-02-04 05:27:19 -05:00
sparsebit.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 482 2019-06-19 17:09:52 +02:00
test_util.h KVM: selftests: Add a helper to get system configured THP page size 2021-04-20 04:18:52 -04:00