From 414de89df1ec453ff4adb9d77ffd596096cb44bd Mon Sep 17 00:00:00 2001 From: Raghavendra Rao Ananta Date: Thu, 7 Oct 2021 23:34:35 +0000 Subject: KVM: arm64: selftests: Add light-weight spinlock support Add a simpler version of spinlock support for ARM64 for the guests to use. The implementation is loosely based on the spinlock implementation in kvm-unit-tests. Signed-off-by: Raghavendra Rao Ananta Reviewed-by: Oliver Upton Reviewed-by: Andrew Jones Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20211007233439.1826892-12-rananta@google.com --- tools/testing/selftests/kvm/include/aarch64/spinlock.h | 13 +++++++++++++ 1 file changed, 13 insertions(+) create mode 100644 tools/testing/selftests/kvm/include/aarch64/spinlock.h (limited to 'tools/testing/selftests/kvm/include/aarch64') diff --git a/tools/testing/selftests/kvm/include/aarch64/spinlock.h b/tools/testing/selftests/kvm/include/aarch64/spinlock.h new file mode 100644 index 000000000000..cf0984106d14 --- /dev/null +++ b/tools/testing/selftests/kvm/include/aarch64/spinlock.h @@ -0,0 +1,13 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef SELFTEST_KVM_ARM64_SPINLOCK_H +#define SELFTEST_KVM_ARM64_SPINLOCK_H + +struct spinlock { + int v; +}; + +extern void spin_lock(struct spinlock *lock); +extern void spin_unlock(struct spinlock *lock); + +#endif /* SELFTEST_KVM_ARM64_SPINLOCK_H */ -- cgit v1.2.3