linux.git/tools/testing/selftests/kvm/Makefile, branch v5.16

KVM: selftests: Add test to verify TRIPLE_FAULT on invalid L2 guest state

2021-12-20T13:06:55+00:00

Add a selftest to attempt to enter L2 with invalid guests state by
exiting to userspace via I/O from L2, and then using KVM_SET_SREGS to set
invalid guest state (marking TR unusable is arbitrary chosen for its
relative simplicity).

This is a regression test for a bug introduced by commit c8607e4a086f
("KVM: x86: nVMX: don't fail nested VM entry on invalid guest state if
!from_vmentry"), which incorrectly set vmx->fail=true when L2 had invalid
guest state and ultimately triggered a WARN due to nested_vmx_vmexit()
seeing vmx->fail==true while attempting to synthesize a nested VM-Exit.

The is also a functional test to verify that KVM sythesizes TRIPLE_FAULT
for L2, which is somewhat arbitrary behavior, instead of emulating L2.
KVM should never emulate L2 due to invalid guest state, as it's
architecturally impossible for L1 to run an L2 guest with invalid state
as nested VM-Enter should always fail, i.e. L1 needs to do the emulation.
Stuffing state via KVM ioctl() is a non-architctural, out-of-band case,
hence the TRIPLE_FAULT being rather arbitrary.

Signed-off-by: Sean Christopherson 
Message-Id: <20211207193006.120997-5-seanjc@google.com>
Reviewed-by: Maxim Levitsky 
Signed-off-by: Paolo Bonzini

selftests: KVM: Add test to verify KVM doesn't explode on "bad" I/O

2021-12-10T14:38:02+00:00

Add an x86 selftest to verify that KVM doesn't WARN or otherwise explode
if userspace modifies RCX during a userspace exit to handle string I/O.
This is a regression test for a user-triggerable WARN introduced by
commit 3b27de271839 ("KVM: x86: split the two parts of emulator_pio_in").

Signed-off-by: Sean Christopherson 
Message-Id: <20211025201311.1881846-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini

selftest: KVM: Add intra host migration tests

2021-11-11T15:36:17+00:00

Adds testcases for intra host migration for SEV and SEV-ES. Also adds
locking test to confirm no deadlock exists.

Signed-off-by: Peter Gonda 
Suggested-by: Sean Christopherson 
Cc: Marc Orr 
Cc: Sean Christopherson 
Cc: David Rientjes 
Cc: Brijesh Singh 
Cc: Tom Lendacky 
Cc: Paolo Bonzini 
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Message-Id: <20211021174303.385706-6-pgonda@google.com>
Signed-off-by: Paolo Bonzini

Merge tag 'kvmarm-5.16' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD

2021-10-31T06:28:48+00:00

KVM/arm64 updates for Linux 5.16

- More progress on the protected VM front, now with the full
  fixed feature set as well as the limitation of some hypercalls
  after initialisation.

- Cleanup of the RAZ/WI sysreg handling, which was pointlessly
  complicated

- Fixes for the vgic placement in the IPA space, together with a
  bunch of selftests

- More memcg accounting of the memory allocated on behalf of a guest

- Timer and vgic selftests

- Workarounds for the Apple M1 broken vgic implementation

- KConfig cleanups

- New kvmarm.mode=none option, for those who really dislike us

Merge branch kvm/selftests/memslot into kvmarm-master/next

2021-10-21T10:40:03+00:00

* kvm/selftests/memslot:
  : .
  : Enable KVM memslot selftests on arm64, making them less
  : x86 specific.
  : .
  KVM: selftests: Build the memslot tests for arm64
  KVM: selftests: Make memslot_perf_test arch independent

Signed-off-by: Marc Zyngier

KVM: selftests: Build the memslot tests for arm64

2021-10-21T10:36:41+00:00

Add memslot_perf_test and memslot_modification_stress_test to the list
of aarch64 selftests.

Signed-off-by: Ricardo Koller 
Reviewed-by: Andrew Jones 
Reviewed-by: Oliver Upton 
Signed-off-by: Marc Zyngier 
Link: https://lore.kernel.org/r/20210907180957.609966-3-ricarkol@google.com

selftests: KVM: Introduce system counter offset test

2021-10-18T18:43:46+00:00

Introduce a KVM selftest to verify that userspace manipulation of the
TSC (via the new vCPU attribute) results in the correct behavior within
the guest.

Reviewed-by: Andrew Jones 
Signed-off-by: Oliver Upton 
Message-Id: <20210916181555.973085-6-oupton@google.com>
Signed-off-by: Paolo Bonzini

selftests: KVM: Add test for KVM_{GET,SET}_CLOCK

2021-10-18T18:43:45+00:00

Add a selftest for the new KVM clock UAPI that was introduced. Ensure
that the KVM clock is consistent between userspace and the guest, and
that the difference in realtime will only ever cause the KVM clock to
advance forward.

Cc: Andrew Jones 
Signed-off-by: Oliver Upton 
Message-Id: <20210916181555.973085-3-oupton@google.com>
Signed-off-by: Paolo Bonzini

KVM: arm64: selftests: Add arch_timer test

2021-10-17T10:17:21+00:00

Add a KVM selftest to validate the arch_timer functionality.
Primarily, the test sets up periodic timer interrupts and
validates the basic architectural expectations upon its receipt.

The test provides command-line options to configure the period
of the timer, number of iterations, and number of vCPUs.

Signed-off-by: Raghavendra Rao Ananta 
Reviewed-by: Andrew Jones 
Signed-off-by: Marc Zyngier 
Link: https://lore.kernel.org/r/20211007233439.1826892-15-rananta@google.com

KVM: arm64: selftests: Add host support for vGIC

2021-10-17T10:17:21+00:00

Implement a simple library to perform vGIC-v3 setup
from a host point of view. This includes creating a
vGIC device, setting up distributor and redistributor
attributes, and mapping the guest physical addresses.

The definition of REDIST_REGION_ATTR_ADDR is taken from
aarch64/vgic_init test. Hence, replace the definition
by including vgic.h in the test file.

Signed-off-by: Raghavendra Rao Ananta 
Reviewed-by: Ricardo Koller 
Reviewed-by: Andrew Jones 
Signed-off-by: Marc Zyngier 
Link: https://lore.kernel.org/r/20211007233439.1826892-14-rananta@google.com