linux-stable.git/tools/testing/selftests/kvm, branch v5.5

Merge branch 'kvm-tsx-ctrl' into HEAD

2019-11-21T11:03:40+00:00

Conflicts:
	arch/x86/kvm/vmx/vmx.c

Merge tag 'kvm-s390-next-5.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

2019-11-18T12:16:46+00:00

KVM: s390: small fixes and enhancements

- selftest improvements
- yield improvements
- cleanups

selftests: kvm: Simplify loop in kvm_create_max_vcpus test

2019-11-15T10:44:12+00:00

On kvm_create_max_vcpus test remove unneeded local
variable in the loop that add vcpus to the VM.

Signed-off-by: Wainer dos Santos Moschetta 
Reviewed-by: Krish Sadhukhan 
Signed-off-by: Paolo Bonzini

selftests: kvm: fix build with glibc >= 2.30

2019-11-13T14:48:00+00:00

Glibc-2.30 gained gettid() wrapper, selftests fail to compile:

lib/assert.c:58:14: error: static declaration of ‘gettid’ follows non-static declaration
   58 | static pid_t gettid(void)
      |              ^~~~~~
In file included from /usr/include/unistd.h:1170,
                 from include/test_util.h:18,
                 from lib/assert.c:10:
/usr/include/bits/unistd_ext.h:34:16: note: previous declaration of ‘gettid’ was here
   34 | extern __pid_t gettid (void) __THROW;
      |                ^~~~~~

Signed-off-by: Vitaly Kuznetsov 
Signed-off-by: Paolo Bonzini

kvm: tests: Add test to verify MSR_IA32_XSS

2019-10-22T13:48:15+00:00

Ensure that IA32_XSS appears in KVM_GET_MSR_INDEX_LIST if it can be set
to a non-zero value.

Reviewed-by: Jim Mattson 
Signed-off-by: Aaron Lewis 
Change-Id: Ia2d644f69e2d6d8c27d7e0a7a45c2bf9c42bf5ff
Signed-off-by: Paolo Bonzini

selftests: kvm: fix sync_regs_test with newer gccs

2019-10-22T11:31:18+00:00

Commit 204c91eff798a ("KVM: selftests: do not blindly clobber registers in
 guest asm") was intended to make test more gcc-proof, however, the result
is exactly the opposite: on newer gccs (e.g. 8.2.1) the test breaks with

==== Test Assertion Failure ====
  x86_64/sync_regs_test.c:168: run->s.regs.regs.rbx == 0xBAD1DEA + 1
  pid=14170 tid=14170 - Invalid argument
     1	0x00000000004015b3: main at sync_regs_test.c:166 (discriminator 6)
     2	0x00007f413fb66412: ?? ??:0
     3	0x000000000040191d: _start at ??:?
  rbx sync regs value incorrect 0x1.

Apparently, compile is still free to play games with registers even
when they have variables attached.

Re-write guest code with 'asm volatile' by embedding ucall there and
making sure rbx is preserved.

Fixes: 204c91eff798a ("KVM: selftests: do not blindly clobber registers in guest asm")
Signed-off-by: Vitaly Kuznetsov 
Signed-off-by: Paolo Bonzini

selftests: kvm: vmx_dirty_log_test: skip the test when VMX is not supported

2019-10-22T11:31:17+00:00

vmx_dirty_log_test fails on AMD and this is no surprise as it is VMX
specific. Bail early when nested VMX is unsupported.

Signed-off-by: Vitaly Kuznetsov 
Signed-off-by: Paolo Bonzini

selftests: kvm: consolidate VMX support checks

2019-10-22T11:31:16+00:00

vmx_* tests require VMX and three of them implement the same check. Move it
to vmx library.

Signed-off-by: Vitaly Kuznetsov 
Signed-off-by: Paolo Bonzini

selftests: kvm: vmx_set_nested_state_test: don't check for VMX support twice

2019-10-22T11:31:16+00:00

vmx_set_nested_state_test() checks if VMX is supported twice: in the very
beginning (and skips the whole test if it's not) and before doing
test_vmx_nested_state(). One should be enough.

Signed-off-by: Vitaly Kuznetsov 
Signed-off-by: Paolo Bonzini

selftests: kvm: synchronize .gitignore to Makefile

2019-10-22T11:31:13+00:00

Because "Untracked files:" are annoying.

Signed-off-by: Vitaly Kuznetsov 
Signed-off-by: Paolo Bonzini