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| author |   Paolo Bonzini <pbonzini@redhat.com> | 2018-07-29 00:14:11 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-08-06 17:58:44 +0200 |
| commit | 9a78bdf31da79a2a58585474598afcf44b14b245 (patch) | |
| tree | 02c165b491b7c0b4a0a0027b18773e8a0fa9f161 /tools/testing/selftests/kvm/state_test.c | |
| parent | KVM: nVMX: include shadow vmcs12 in nested state (diff) | |
| download | linux-dev-9a78bdf31da79a2a58585474598afcf44b14b245.tar.xz linux-dev-9a78bdf31da79a2a58585474598afcf44b14b245.zip | |
KVM: selftests: add tests for shadow VMCS save/restore
This includes setting up the shadow VMCS and the secondary execution
controls in lib/vmx.c.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | tools/testing/selftests/kvm/state_test.c | 34 |
1 files changed, 32 insertions, 2 deletions
diff --git a/tools/testing/selftests/kvm/state_test.c b/tools/testing/selftests/kvm/state_test.c index 8554a34f826e..ecabf25b7077 100644 --- a/tools/testing/selftests/kvm/state_test.c +++ b/tools/testing/selftests/kvm/state_test.c @@ -53,7 +53,15 @@ void l2_guest_code(void) /* Exit to L1 */ vmcall(); - GUEST_SYNC(7); + /* L1 has now set up a shadow VMCS for us. */ + GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffee); + GUEST_SYNC(9); + GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffee); + GUEST_ASSERT(!vmwrite(GUEST_RIP, 0xc0fffee)); + GUEST_SYNC(10); + GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0fffee); + GUEST_ASSERT(!vmwrite(GUEST_RIP, 0xc0ffffee)); + GUEST_SYNC(11); /* Done, exit to L1 and never come back. */ vmcall(); @@ -94,9 +102,31 @@ void l1_guest_code(struct vmx_pages *vmx_pages) vmwrite(GUEST_RIP, vmreadz(GUEST_RIP) + 3); + vmwrite(SECONDARY_VM_EXEC_CONTROL, SECONDARY_EXEC_SHADOW_VMCS); + vmwrite(VMCS_LINK_POINTER, vmx_pages->shadow_vmcs_gpa); + + GUEST_ASSERT(!vmptrld(vmx_pages->shadow_vmcs_gpa)); + GUEST_ASSERT(vmlaunch()); + GUEST_SYNC(7); + GUEST_ASSERT(vmlaunch()); + GUEST_ASSERT(vmresume()); + + vmwrite(GUEST_RIP, 0xc0ffee); + GUEST_SYNC(8); + GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffee); + + GUEST_ASSERT(!vmptrld(vmx_pages->vmcs_gpa)); GUEST_ASSERT(!vmresume()); GUEST_ASSERT(vmreadz(VM_EXIT_REASON) == EXIT_REASON_VMCALL); - GUEST_SYNC(8); + + GUEST_ASSERT(!vmptrld(vmx_pages->shadow_vmcs_gpa)); + GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffffee); + GUEST_ASSERT(vmlaunch()); + GUEST_ASSERT(vmresume()); + GUEST_SYNC(12); + GUEST_ASSERT(vmreadz(GUEST_RIP) == 0xc0ffffee); + GUEST_ASSERT(vmlaunch()); + GUEST_ASSERT(vmresume()); } void guest_code(struct vmx_pages *vmx_pages) |