kernel/linux.git/tools/testing/selftests/kvm/lib, branch v6.3.6

KVM: selftests: Add 'malloc' failure check in vcpu_save_state

2023-05-24T16:30:10+00:00

[ Upstream commit 735b0e0f2d001b7ed9486db84453fb860e764a4d ] There is a 'malloc' call in vcpu_save_state function, which can be unsuccessful. This patch will add the malloc failure checking to avoid possible null dereference and give more information about test fail reasons. Signed-off-by: Ivan Orlov Link: https://lore.kernel.org/r/20230322144528.704077-1-ivan.orlov0322@gmail.com Signed-off-by: Sean Christopherson Signed-off-by: Sasha Levin

KVM: selftests: Sync KVM exit reasons in selftests

2023-03-14T14:20:10+00:00

Add missing KVM_EXIT_* reasons in KVM selftests from include/uapi/linux/kvm.h Signed-off-by: Vipin Sharma Message-Id: <20230204014547.583711-5-vipinsh@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Add macro to generate KVM exit reason strings

2023-03-14T14:20:10+00:00

Add and use a macro to generate the KVM exit reason strings array instead of relying on developers to correctly copy+paste+edit each string. Signed-off-by: Sean Christopherson Message-Id: <20230204014547.583711-4-vipinsh@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Make vCPU exit reason test assertion common

2023-03-14T14:20:09+00:00

Make TEST_ASSERT_KVM_EXIT_REASON() macro and replace all exit reason test assert statements with it. No functional changes intended. Signed-off-by: Vipin Sharma Reviewed-by: David Matlack Message-Id: <20230204014547.583711-2-vipinsh@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Add helpers to make Xen-style VMCALL/VMMCALL hypercalls

2023-03-14T14:20:08+00:00

Add wrappers to do hypercalls using VMCALL/VMMCALL and Xen's register ABI (as opposed to full Xen-style hypercalls through a hypervisor provided page). Using the common helpers dedups a pile of code, and uses the native hypercall instruction when running on AMD. Signed-off-by: Sean Christopherson Message-Id: <20230204024151.1373296-3-seanjc@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Move the guts of kvm_hypercall() to a separate macro

2023-03-14T14:20:07+00:00

Extract the guts of kvm_hypercall() to a macro so that Xen hypercalls, which have a different register ABI, can reuse the VMCALL vs. VMMCALL logic. No functional change intended. Signed-off-by: Sean Christopherson Message-Id: <20230204024151.1373296-2-seanjc@google.com> Signed-off-by: Paolo Bonzini

selftests: KVM: skip hugetlb tests if huge pages are not available

2023-03-14T14:20:06+00:00

Right now, if KVM memory stress tests are run with hugetlb sources but hugetlb is not available (either in the kernel or because /proc/sys/vm/nr_hugepages is 0) the test will fail with a memory allocation error. This makes it impossible to add tests that default to hugetlb-backed memory, because on a machine with a default configuration they will fail. Therefore, check HugePages_Total as well and, if zero, direct the user to enable hugepages in procfs. Furthermore, return KSFT_SKIP whenever hugetlb is not available. Signed-off-by: Paolo Bonzini

Merge tag 'kvm-x86-selftests-6.3' of https://github.com/kvm-x86/linux into HEAD

2023-02-15T13:34:32+00:00

KVM selftests changes for 6.3: - Cache the CPU vendor (AMD vs. Intel) and use the info to emit the correct hypercall instruction instead of relying on KVM to patch in VMMCALL - A variety of one-off cleanups and fixes

KVM: selftests: Remove duplicate macro definition

2023-02-08T14:53:14+00:00

The KVM_GUEST_PAGE_TABLE_MIN_PADDR macro has been defined in include/kvm_util_base.h. So remove the duplicate definition in lib/kvm_util.c. Fixes: cce0c23dd944 ("KVM: selftests: Add wrapper to allocate page table page") Signed-off-by: Shaoqin Huang Link: https://lore.kernel.org/r/20230208071801.68620-1-shahuang@redhat.com Signed-off-by: Sean Christopherson

selftests: KVM: Replace optarg with arg in guest_modes_cmdline

2023-02-08T14:38:47+00:00

The parameter arg in guest_modes_cmdline not being used now, and the optarg should be replaced with arg in guest_modes_cmdline. And this is the chance to change strtoul() to atoi_non_negative(), since guest mode ID will never be negative. Signed-off-by: Shaoqin Huang Fixes: e42ac777d661 ("KVM: selftests: Factor out guest mode code") Reviewed-by: Andrew Jones Reviewed-by: Vipin Sharma Link: https://lore.kernel.org/r/20230202025716.216323-1-shahuang@redhat.com Signed-off-by: Sean Christopherson