hw/i386/vmport: Report vmware-vmx-type in CMD_GETVERSION

As can be seen from VmCheck_GetVersion() in open-vm-tools code,
CMD_GETVERSION should return vmware-vmx-type in ECX register.

Default is to fake host as VMware ESX server. But user can control
this value by "-global vmport.vmware-vmx-type=X".

Reviewed-by: Nikita Leshenko <nikita.leshchenko@oracle.com>
Signed-off-by: Liran Alon <liran.alon@oracle.com>
Message-Id: <20200312165431.82118-7-liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/hw/i386/vmport.c b/hw/i386/vmport.c
index dfebaf5..dabb443 100644
--- a/hw/i386/vmport.c
+++ b/hw/i386/vmport.c
@@ -46,10 +46,13 @@
 /* Compatibility flags for migration */
 #define VMPORT_COMPAT_READ_SET_EAX_BIT              0
 #define VMPORT_COMPAT_SIGNAL_UNSUPPORTED_CMD_BIT    1
+#define VMPORT_COMPAT_REPORT_VMX_TYPE_BIT           2
 #define VMPORT_COMPAT_READ_SET_EAX              \
     (1 << VMPORT_COMPAT_READ_SET_EAX_BIT)
 #define VMPORT_COMPAT_SIGNAL_UNSUPPORTED_CMD    \
     (1 << VMPORT_COMPAT_SIGNAL_UNSUPPORTED_CMD_BIT)
+#define VMPORT_COMPAT_REPORT_VMX_TYPE           \
+    (1 << VMPORT_COMPAT_REPORT_VMX_TYPE_BIT)
 
 #define VMPORT(obj) OBJECT_CHECK(VMPortState, (obj), TYPE_VMPORT)
 
@@ -61,6 +64,7 @@ typedef struct VMPortState {
     void *opaque[VMPORT_ENTRIES];
 
     uint32_t vmware_vmx_version;
+    uint8_t vmware_vmx_type;
 
     uint32_t compat_flags;
 } VMPortState;
@@ -140,6 +144,9 @@ static uint32_t vmport_cmd_get_version(void *opaque, uint32_t addr)
     X86CPU *cpu = X86_CPU(current_cpu);
 
     cpu->env.regs[R_EBX] = VMPORT_MAGIC;
+    if (port_state->compat_flags & VMPORT_COMPAT_REPORT_VMX_TYPE) {
+        cpu->env.regs[R_ECX] = port_state->vmware_vmx_type;
+    }
     return port_state->vmware_vmx_version;
 }
 
@@ -181,10 +188,30 @@ static Property vmport_properties[] = {
                     VMPORT_COMPAT_READ_SET_EAX_BIT, true),
     DEFINE_PROP_BIT("x-signal-unsupported-cmd", VMPortState, compat_flags,
                     VMPORT_COMPAT_SIGNAL_UNSUPPORTED_CMD_BIT, true),
+    DEFINE_PROP_BIT("x-report-vmx-type", VMPortState, compat_flags,
+                    VMPORT_COMPAT_REPORT_VMX_TYPE_BIT, true),
 
     /* Default value taken from open-vm-tools code VERSION_MAGIC definition */
     DEFINE_PROP_UINT32("vmware-vmx-version", VMPortState,
                        vmware_vmx_version, 6),
+    /*
+     * Value determines which VMware product type host report itself to guest.
+     *
+     * Most guests are fine with exposing host as VMware ESX server.
+     * Some legacy/proprietary guests hard-code a given type.
+     *
+     * For a complete list of values, refer to enum VMXType at open-vm-tools
+     * project (Defined at lib/include/vm_vmx_type.h).
+     *
+     * Reasonable options:
+     * 0 - Unset
+     * 1 - VMware Express (deprecated)
+     * 2 - VMware ESX Server
+     * 3 - VMware Server (Deprecated)
+     * 4 - VMware Workstation
+     * 5 - ACE 1.x (Deprecated)
+     */
+    DEFINE_PROP_UINT8("vmware-vmx-type", VMPortState, vmware_vmx_type, 2),
 
     DEFINE_PROP_END_OF_LIST(),
 };