linux-toradex.git/tools/testing/selftests/kvm, branch toradex_5.3.y

selftests: kvm: fix sync_regs_test with newer gccs

2019-11-10T10:34:21+00:00

[ Upstream commit ef4059809890f732c69cc1726d3a9a108a832a2f ]

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 
Signed-off-by: Sasha Levin

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

2019-11-10T10:34:20+00:00

[ Upstream commit 700c17d9cec8712f4091692488fb63e2680f7a5d ]

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 
Signed-off-by: Sasha Levin

selftests: kvm: Fix libkvm build error

2019-10-29T08:21:43+00:00

[ Upstream commit 6e06983dde969c15eb4fdab77f0eda8b18ea28e6 ]

Fix the following build error from "make TARGETS=kvm kselftest":

libkvm.a(assert.o): relocation R_X86_64_32 against `.rodata.str1.1' can not be used when making a PIE object; recompile with -fPIC

This error is seen when build is done from the main Makefile using
kselftest target. In this case KBUILD_CPPFLAGS and CC_OPTION_CFLAGS
are defined.

When build is invoked using:

"make -C tools/testing/selftests/kvm" KBUILD_CPPFLAGS and CC_OPTION_CFLAGS
aren't defined.

There is no need to pass in KBUILD_CPPFLAGS and CC_OPTION_CFLAGS for the
check to determine if --no-pie is necessary, which is the case when these
two aren't defined when "make -C tools/testing/selftests/kvm" runs.

Fix it by simplifying the no-pie-option logic. With this change, both
build variations work.

"make TARGETS=kvm kselftest"
"make -C tools/testing/selftests/kvm"

Signed-off-by: Shuah Khan 
Signed-off-by: Paolo Bonzini 
Signed-off-by: Sasha Levin

selftests/kvm: make platform_info_test pass on AMD

2019-08-21T17:08:18+00:00

test_msr_platform_info_disabled() generates EXIT_SHUTDOWN but VMCB state
is undefined after that so an attempt to launch this guest again from
test_msr_platform_info_enabled() fails. Reorder the tests to make test
pass.

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

selftests: kvm: fix state save/load on processors without XSAVE

2019-08-21T08:27:35+00:00

state_test and smm_test are failing on older processors that do not
have xcr0.  This is because on those processor KVM does provide
support for KVM_GET/SET_XSAVE (to avoid having to rely on the older
KVM_GET/SET_FPU) but not for KVM_GET/SET_XCRS.

Signed-off-by: Paolo Bonzini

selftests: kvm: fix vmx_set_nested_state_test

2019-08-15T07:16:03+00:00

vmx_set_nested_state_test is trying to use the KVM_STATE_NESTED_EVMCS without
enabling enlightened VMCS first.  Correct the outcome of the test, and actually
test that it succeeds after the capability is enabled.

Signed-off-by: Paolo Bonzini

selftests: kvm: provide common function to enable eVMCS

2019-08-15T07:16:02+00:00

There are two tests already enabling eVMCS and a third is coming.
Add a function that enables the capability and tests the result.

Signed-off-by: Paolo Bonzini

selftests: kvm: do not try running the VM in vmx_set_nested_state_test

2019-08-15T07:16:01+00:00

This test is only covering various edge cases of the
KVM_SET_NESTED_STATE ioctl.  Running the VM does not really
add anything.

Signed-off-by: Paolo Bonzini

selftests: kvm: Adding config fragments

2019-08-09T14:52:38+00:00

selftests kvm test cases need pre-required kernel configs for the test
to get pass.

Signed-off-by: Naresh Kamboju 
Signed-off-by: Paolo Bonzini

KVM: selftests: Update gitignore file for latest changes

2019-08-09T14:50:09+00:00

The kvm_create_max_vcpus test has been moved to the main directory,
and sync_regs_test is now available on s390x, too.

Signed-off-by: Thomas Huth 
Acked-by: Shuah Khan 
Signed-off-by: Paolo Bonzini