linux-stable.git/tools/testing/selftests/kvm/include, branch v5.4.232

KVM: VMX: Fix the spelling of CPU_BASED_USE_TSC_OFFSETTING

2023-01-18T10:41:54+00:00

[ Upstream commit 5e3d394fdd9e6b49cd8b28d85adff100a5bddc66 ]

The mis-spelling is found by checkpatch.pl, so fix them.

Signed-off-by: Xiaoyao Li 
Signed-off-by: Paolo Bonzini 
Stable-dep-of: 31de69f4eea7 ("KVM: nVMX: Properly expose ENABLE_USR_WAIT_PAUSE control to L1")
Signed-off-by: Sasha Levin

KVM: VMX: Rename NMI_PENDING to NMI_WINDOW

2023-01-18T10:41:54+00:00

[ Upstream commit 4e2a0bc56ad197e5ccfab8395649b681067fe8cb ]

Rename the NMI-window exiting related definitions to match the latest
Intel SDM. No functional changes.

Signed-off-by: Xiaoyao Li 
Signed-off-by: Paolo Bonzini 
Stable-dep-of: 31de69f4eea7 ("KVM: nVMX: Properly expose ENABLE_USR_WAIT_PAUSE control to L1")
Signed-off-by: Sasha Levin

KVM: VMX: Rename INTERRUPT_PENDING to INTERRUPT_WINDOW

2023-01-18T10:41:54+00:00

[ Upstream commit 9dadc2f918df26e64aa04794cdb4d8667c934f47 ]

Rename interrupt-windown exiting related definitions to match the
latest Intel SDM. No functional changes.

Signed-off-by: Xiaoyao Li 
Signed-off-by: Paolo Bonzini 
Stable-dep-of: 31de69f4eea7 ("KVM: nVMX: Properly expose ENABLE_USR_WAIT_PAUSE control to L1")
Signed-off-by: Sasha Levin

x86/cpu: Restore AMD's DE_CFG MSR after resume

2022-11-25T16:42:11+00:00

commit 2632daebafd04746b4b96c2f26a6021bc38f6209 upstream.

DE_CFG contains the LFENCE serializing bit, restore it on resume too.
This is relevant to older families due to the way how they do S3.

Unify and correct naming while at it.

Fixes: e4d0e84e4907 ("x86/cpu/AMD: Make LFENCE a serializing instruction")
Reported-by: Andrew Cooper 
Reported-by: Pawan Gupta 
Signed-off-by: Borislav Petkov 
Cc: 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

selftests: kvm: Fix the segment descriptor layout to match the actual layout

2020-11-24T12:29:00+00:00

[ Upstream commit df11f7dd5834146defa448acba097e8d7703cc42 ]

Fix the layout of 'struct desc64' to match the layout described in the
SDM Vol 3, Chapter 3 "Protected-Mode Memory Management", section 3.4.5
"Segment Descriptors", Figure 3-8 "Segment Descriptor".  The test added
later in this series relies on this and crashes if this layout is not
correct.

Signed-off-by: Aaron Lewis 
Reviewed-by: Alexander Graf 
Message-Id: <20201012194716.3950330-2-aaronlewis@google.com>
Signed-off-by: Paolo Bonzini 
Signed-off-by: Sasha Levin

KVM: selftests: Fix build for evmcs.h

2020-05-27T15:46:36+00:00

[ Upstream commit 8ffdaf9155ebe517cdec5edbcca19ba6e7ee9c3c ]

I got this error when building kvm selftests:

/usr/bin/ld: /home/xz/git/linux/tools/testing/selftests/kvm/libkvm.a(vmx.o):/home/xz/git/linux/tools/testing/selftests/kvm/include/evmcs.h:222: multiple definition of `current_evmcs'; /tmp/cco1G48P.o:/home/xz/git/linux/tools/testing/selftests/kvm/include/evmcs.h:222: first defined here
/usr/bin/ld: /home/xz/git/linux/tools/testing/selftests/kvm/libkvm.a(vmx.o):/home/xz/git/linux/tools/testing/selftests/kvm/include/evmcs.h:223: multiple definition of `current_vp_assist'; /tmp/cco1G48P.o:/home/xz/git/linux/tools/testing/selftests/kvm/include/evmcs.h:223: first defined here

I think it's because evmcs.h is included both in a test file and a lib file so
the structs have multiple declarations when linking.  After all it's not a good
habit to declare structs in the header files.

Cc: Vitaly Kuznetsov 
Signed-off-by: Peter Xu 
Message-Id: <20200504220607.99627-1-peterx@redhat.com>
Signed-off-by: Paolo Bonzini 
Signed-off-by: Sasha Levin

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: 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: Remove duplicate guest mode handling

2019-09-24T11:37:24+00:00

Remove the duplication code in run_test() of dirty_log_test because
after some reordering of functions now we can directly use the outcome
of vm_create().

Meanwhile, with the new VM_MODE_PXXV48_4K, we can safely revert
b442324b58 too where we stick the x86_64 PA width to 39 bits for
dirty_log_test.

Reviewed-by: Andrew Jones 
Signed-off-by: Peter Xu 
Signed-off-by: Paolo Bonzini

KVM: selftests: Introduce VM_MODE_PXXV48_4K

2019-09-24T11:37:22+00:00

The naming VM_MODE_P52V48_4K is explicit but unclear when used on
x86_64 machines, because x86_64 machines are having various physical
address width rather than some static values.  Here's some examples:

  - Intel Xeon E3-1220:  36 bits
  - Intel Core i7-8650:  39 bits
  - AMD   EPYC 7251:     48 bits

All of them are using 48 bits linear address width but with totally
different physical address width (and most of the old machines should
be less than 52 bits).

Let's create a new guest mode called VM_MODE_PXXV48_4K for current
x86_64 tests and make it as the default to replace the old naming of
VM_MODE_P52V48_4K because it shows more clearly that the PA width is
not really a constant.  Meanwhile we also stop assuming all the x86
machines are having 52 bits PA width but instead we fetch the real
vm->pa_bits from CPUID 0x80000008 during runtime.

We currently make this exclusively used by x86_64 but no other arch.

As a slight touch up, moving DEBUG macro from dirty_log_test.c to
kvm_util.h so lib can use it too.

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