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

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 libkvm build error

2019-10-03T10:07:58+00:00

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

selftests: kvm: add test for dirty logging inside nested guests

2019-09-27T11:13:40+00:00

Check that accesses by nested guests are logged according to the
L1 physical addresses rather than L2.

Most of the patch is really adding EPT support to the testing
framework.

Signed-off-by: Paolo Bonzini

KVM: selftests: Add a test for the KVM_S390_MEM_OP ioctl

2019-08-29T14:09:11+00:00

Check that we can write and read the guest memory with this s390x
ioctl, and that some error cases are handled correctly.

Signed-off-by: Thomas Huth 
Link: https://lkml.kernel.org/r/20190829130732.580-1-thuth@redhat.com
Signed-off-by: Christian Borntraeger

KVM: selftests: Enable dirty_log_test on s390x

2019-08-02T13:44:23+00:00

To run the dirty_log_test on s390x, we have to make sure that we
access the dirty log bitmap with little endian byte ordering and
we have to properly align the memslot of the guest.
Also all dirty bits of a segment are set once on s390x when one
of the pages of a segment are written to for the first time, so
we have to make sure that we touch all pages during the first
iteration to keep the test in sync here.
DEFAULT_GUEST_TEST_MEM needs an adjustment, too. On some s390x
distributions, the ELF binary is linked to address 0x80000000,
so we have to avoid that our test region overlaps into this area.
0xc0000000 seems to be a good alternative that should work on x86
and aarch64, too.

Acked-by: Paolo Bonzini 
Reviewed-by: Andrew Jones 
Signed-off-by: Thomas Huth 
Link: https://lore.kernel.org/r/20190731151525.17156-4-thuth@redhat.com
Signed-off-by: Christian Borntraeger

KVM: selftests: Implement ucall() for s390x

2019-08-02T13:44:23+00:00

On s390x, we can neither exit via PIO nor MMIO, but have to use an
instruction like DIAGNOSE. Now that ucall() is implemented, we can
use it in the sync_reg_test on s390x, too.

Reviewed-by: Andrew Jones 
Signed-off-by: Thomas Huth 
Link: https://lore.kernel.org/r/20190731151525.17156-3-thuth@redhat.com
Signed-off-by: Christian Borntraeger

KVM: selftests: Split ucall.c into architecture specific files

2019-08-02T13:44:16+00:00

The way we exit from a guest to userspace is very specific to the
architecture: On x86, we use PIO, on aarch64 we are using MMIO and on
s390x we're going to use an instruction instead. The possibility to
select a type via the ucall_type_t enum is currently also completely
unused, so the code in ucall.c currently looks more complex than
required. Let's split this up into architecture specific ucall.c
files instead, so we can get rid of the #ifdefs and the unnecessary
ucall_type_t handling.

Reviewed-by: Andrew Jones 
Signed-off-by: Thomas Huth 
Acked-by: Paolo Bonzini 
Link: https://lore.kernel.org/r/20190731151525.17156-2-thuth@redhat.com
Signed-off-by: Christian Borntraeger

Merge tag 'kvm-s390-next-5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

2019-07-15T11:28:58+00:00

KVM: s390: add kselftests

This is the initial implementation for KVM selftests on s390.

tests: kvm: Check for a kernel warning

2019-06-19T14:11:54+00:00

When running with /sys/module/kvm_intel/parameters/unrestricted_guest=N,
test that a kernel warning does not occur informing us that
vcpu->mmio_needed=1.  This can happen when KVM_RUN is called after a
triple fault.
This test was made to detect a bug that was reported by Syzkaller
(https://groups.google.com/forum/#!topic/syzkaller/lHfau8E3SOE) and
fixed with commit bbeac2830f4de ("KVM: X86: Fix residual mmio emulation
request to userspace").

Signed-off-by: Aaron Lewis 
Reviewed-by: Jim Mattson 
Reviewed-by: Peter Shier 
Signed-off-by: Paolo Bonzini

kvm: tests: Sort tests in the Makefile alphabetically

2019-06-19T14:11:53+00:00

Signed-off-by: Aaron Lewis 
Reviewed-by: Peter Shier 
Signed-off-by: Paolo Bonzini