kernel/git/next/linux-next.git/tools/testing/selftests/kvm, branch akpm

Merge branch 'next' of git://git.kernel.org/pub/scm/virt/kvm/kvm.git

2022-06-28T03:41:23+00:00

# Conflicts: # tools/testing/selftests/kvm/lib/aarch64/ucall.c # tools/testing/selftests/kvm/s390x/memop.c # tools/testing/selftests/kvm/s390x/resets.c # tools/testing/selftests/kvm/s390x/sync_regs_test.c # tools/testing/selftests/kvm/s390x/tprot.c

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux.git

2022-06-27T22:56:28+00:00

KVM: selftests: Enhance handling WRMSR ICR register in x2APIC mode

2022-06-24T08:52:04+00:00

Hardware would directly write x2APIC ICR register instead of software emulation in some circumstances, e.g when Intel IPI virtualization is enabled. This behavior requires normal reserved bits checking to ensure them input as zero, otherwise it will cause #GP. So we need mask out those reserved bits from the data written to vICR register. Remove Delivery Status bit emulation in test case as this flag is invalid and not needed in x2APIC mode. KVM may ignore clearing it during interrupt dispatch which will lead to fake test failure. Opportunistically correct vector number for test sending IPI to non-existent vCPUs. Signed-off-by: Zeng Guang Message-Id: <20220623094511.26066-1-guang.zeng@intel.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Add a self test for CMCI and UCNA emulations.

2022-06-24T08:52:04+00:00

This patch add a self test that verifies user space can inject UnCorrectable No Action required (UCNA) memory errors to the guest. It also verifies that incorrectly configured MSRs for Corrected Machine Check Interrupt (CMCI) emulation will result in #GP. Signed-off-by: Jue Wang Signed-off-by: Paolo Bonzini Message-Id: <20220610171134.772566-9-juew@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Cache binary stats metadata for duration of test

2022-06-24T08:51:51+00:00

In order to improve performance across multiple reads of VM stats, cache the stats metadata in the VM struct. Signed-off-by: Ben Gardon Message-Id: <20220613212523.3436117-11-bgardon@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Test disabling NX hugepages on a VM

2022-06-24T08:51:51+00:00

Add an argument to the NX huge pages test to test disabling the feature on a VM using the new capability. Reviewed-by: David Matlack Signed-off-by: Ben Gardon Message-Id: <20220613212523.3436117-10-bgardon@google.com> [Handle failure of sudo or setcap more gracefully. - Paolo] Signed-off-by: Paolo Bonzini

KVM: selftests: Add NX huge pages test

2022-06-24T08:51:50+00:00

There's currently no test coverage of NX hugepages in KVM selftests, so add a basic test to ensure that the feature works as intended. The test creates a VM with a data slot backed with huge pages. The memory in the data slot is filled with op-codes for the return instruction. The guest then executes a series of accesses on the memory, some reads, some instruction fetches. After each operation, the guest exits and the test performs some checks on the backing page counts to ensure that NX page splitting an reclaim work as expected. Reviewed-by: David Matlack Signed-off-by: Ben Gardon Message-Id: <20220613212523.3436117-7-bgardon@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Read binary stat data in lib

2022-06-24T08:51:47+00:00

Move the code to read the binary stats data to the KVM selftests library. It will be re-used by other tests to check KVM behavior. Also opportunistically remove an unnecessary calculation with "size_data" in stats_test. Reviewed-by: David Matlack Reviewed-by: Peter Xu Signed-off-by: Ben Gardon Message-Id: <20220613212523.3436117-6-bgardon@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Clean up coding style in binary stats test

2022-06-24T08:51:46+00:00

Fix a variety of code style violations and/or inconsistencies in the binary stats test. The 80 char limit is a soft limit and can and should be ignored/violated if doing so improves the overall code readability. Specifically, provide consistent indentation and don't split expressions at arbitrary points just to honor the 80 char limit. Opportunistically expand/add comments to call out the more subtle aspects of the code. Signed-off-by: Sean Christopherson Reviewed-by: David Matlack Signed-off-by: Ben Gardon Message-Id: <20220613212523.3436117-5-bgardon@google.com> Signed-off-by: Paolo Bonzini

KVM: selftests: Read binary stats desc in lib

2022-06-24T08:51:45+00:00

Move the code to read the binary stats descriptors to the KVM selftests library. It will be re-used by other tests to check KVM behavior. No functional change intended. Reviewed-by: David Matlack Reviewed-by: Peter Xu Signed-off-by: Ben Gardon Message-Id: <20220613212523.3436117-4-bgardon@google.com> Signed-off-by: Paolo Bonzini