linux.git/tools/testing/selftests, branch v4.19-rc4

selftests: pmtu: detect correct binary to ping ipv6 addresses

2018-09-01T06:14:20+00:00

Some systems don't have the ping6 binary anymore, and use ping for
everything. Detect the absence of ping6 and try to use ping instead.

Fixes: d1f1b9cbf34c ("selftests: net: Introduce first PMTU test")
Signed-off-by: Sabrina Dubroca 
Acked-by: Stefano Brivio 
Signed-off-by: David S. Miller

selftests: pmtu: maximum MTU for vti4 is 2^16-1-20

2018-09-01T06:14:20+00:00

Since commit 82612de1c98e ("ip_tunnel: restore binding to ifaces with a
large mtu"), the maximum MTU for vti4 is based on IP_MAX_MTU instead of
the mysterious constant 0xFFF8.  This makes this selftest fail.

Fixes: 82612de1c98e ("ip_tunnel: restore binding to ifaces with a large mtu")
Signed-off-by: Sabrina Dubroca 
Acked-by: Stefano Brivio 
Acked-by: Nicolas Dichtel 
Signed-off-by: David S. Miller

tc-testing: add test-cases for numeric and invalid control action

2018-08-30T05:10:59+00:00

Only the police action allows us to specify an arbitrary numeric value
for the control action. This change introduces an explicit test case
for the above feature and then leverage it for testing the kernel behavior
for invalid control actions (reject).

Signed-off-by: Paolo Abeni 
Signed-off-by: David S. Miller

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2018-08-22T20:52:44+00:00

Pull second set of KVM updates from Paolo Bonzini:
 "ARM:
   - Support for Group0 interrupts in guests
   - Cache management optimizations for ARMv8.4 systems
   - Userspace interface for RAS
   - Fault path optimization
   - Emulated physical timer fixes
   - Random cleanups

  x86:
   - fixes for L1TF
   - a new test case
   - non-support for SGX (inject the right exception in the guest)
   - fix lockdep false positive"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (49 commits)
  KVM: VMX: fixes for vmentry_l1d_flush module parameter
  kvm: selftest: add dirty logging test
  kvm: selftest: pass in extra memory when create vm
  kvm: selftest: include the tools headers
  kvm: selftest: unify the guest port macros
  tools: introduce test_and_clear_bit
  KVM: x86: SVM: Call x86_spec_ctrl_set_guest/host() with interrupts disabled
  KVM: vmx: Inject #UD for SGX ENCLS instruction in guest
  KVM: vmx: Add defines for SGX ENCLS exiting
  x86/kvm/vmx: Fix coding style in vmx_setup_l1d_flush()
  x86: kvm: avoid unused variable warning
  KVM: Documentation: rename the capability of KVM_CAP_ARM_SET_SERROR_ESR
  KVM: arm/arm64: Skip updating PTE entry if no change
  KVM: arm/arm64: Skip updating PMD entry if no change
  KVM: arm: Use true and false for boolean values
  KVM: arm/arm64: vgic: Do not use spin_lock_irqsave/restore with irq disabled
  KVM: arm/arm64: vgic: Move DEBUG_SPINLOCK_BUG_ON to vgic.h
  KVM: arm: vgic-v3: Add support for ICC_SGI0R and ICC_ASGI1R accesses
  KVM: arm64: vgic-v3: Add support for ICC_SGI0R_EL1 and ICC_ASGI1R_EL1 accesses
  KVM: arm/arm64: vgic-v3: Add core support for Group0 SGIs
  ...

proc: test /proc/thread-self symlink

2018-08-22T17:52:45+00:00

Same story: I have WIP patch to make it faster, so better have a test
as well.

Link: http://lkml.kernel.org/r/20180627195209.GC18113@avx2
Signed-off-by: Alexey Dobriyan 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

proc: test /proc/self symlink

2018-08-22T17:52:45+00:00

There are plans to change how /proc/self result is calculated,
for that a test is necessary.

Use direct system call because of this whole getpid caching story.

Link: http://lkml.kernel.org/r/20180627195103.GB18113@avx2
Signed-off-by: Alexey Dobriyan 
Cc: Shuah Khan 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

tools/testing/selftests/vm/: add MAP_POPULATE test

2018-08-22T17:52:45+00:00

As with many other projects, we use some shmalloc allocator.  At some
point we need to make a part of allocated pages back private to process.
And it should be populated straight away.  Check that (MAP_PRIVATE |
MAP_POPULATE) actually copies the private page.

[akpm@linux-foundation.org: change message, per review discussion]
Link: http://lkml.kernel.org/r/20180801233636.29354-1-dima@arista.com
Signed-off-by: Dmitry Safonov 
Reviewed-by: Andrew Morton 
Cc: Dmitry Safonov <0x7f454c46@gmail.com>
Cc: Hua Zhong 
Cc: Shuah Khan 
Cc: Stuart Ritchie 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

kvm: selftest: add dirty logging test

2018-08-22T14:48:39+00:00

Test KVM dirty logging functionality.

The test creates a standalone memory slot to test tracking the dirty
pages since we can't really write to the default memory slot which still
contains the guest ELF image.

We have two threads running during the test:

(1) the vcpu thread continuously dirties random guest pages by writting
    a iteration number to the first 8 bytes of the page

(2) the host thread continuously fetches dirty logs for the testing
    memory region and verify each single bit of the dirty bitmap by
    checking against the values written onto the page

Note that since the guest cannot calls the general userspace APIs like
random(), it depends on the host to provide random numbers for the
page indexes to dirty.

Signed-off-by: Peter Xu 
Signed-off-by: Paolo Bonzini

kvm: selftest: pass in extra memory when create vm

2018-08-22T14:48:38+00:00

This information can be used to decide the size of the default memory
slot, which will need to cover the extra pages with page tables.

Signed-off-by: Peter Xu 
Signed-off-by: Paolo Bonzini

kvm: selftest: include the tools headers

2018-08-22T14:48:38+00:00

Let the kvm selftest include the tools headers, then we can start to use
things there like bitmap operations.

Signed-off-by: Peter Xu 
Signed-off-by: Paolo Bonzini