target/i386: add VMX features

Add code to convert the VMX feature words back into MSR values,
allowing the user to enable/disable VMX features as they wish.  The same
infrastructure enables support for limiting VMX features in named
CPU models.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 225 insertions, 0 deletions

diff --git a/target/i386/cpu.c b/target/i386/cpu.c
index 0a5d182049..44f1bbdcac 100644
--- a/target/i386/cpu.c
+++ b/target/i386/cpu.c
@@ -1232,6 +1232,163 @@ static FeatureWordInfo feature_word_info[FEATURE_WORDS] = {
             .index = MSR_IA32_CORE_CAPABILITY,
         },
     },
+
+    [FEAT_VMX_PROCBASED_CTLS] = {
+        .type = MSR_FEATURE_WORD,
+        .feat_names = {
+            NULL, NULL, "vmx-vintr-pending", "vmx-tsc-offset",
+            NULL, NULL, NULL, "vmx-hlt-exit",
+            NULL, "vmx-invlpg-exit", "vmx-mwait-exit", "vmx-rdpmc-exit",
+            "vmx-rdtsc-exit", NULL, NULL, "vmx-cr3-load-noexit",
+            "vmx-cr3-store-noexit", NULL, NULL, "vmx-cr8-load-exit",
+            "vmx-cr8-store-exit", "vmx-flexpriority", "vmx-vnmi-pending", "vmx-movdr-exit",
+            "vmx-io-exit", "vmx-io-bitmap", NULL, "vmx-mtf",
+            "vmx-msr-bitmap", "vmx-monitor-exit", "vmx-pause-exit", "vmx-secondary-ctls",
+        },
+        .msr = {
+            .index = MSR_IA32_VMX_TRUE_PROCBASED_CTLS,
+        }
+    },
+
+    [FEAT_VMX_SECONDARY_CTLS] = {
+        .type = MSR_FEATURE_WORD,
+        .feat_names = {
+            "vmx-apicv-xapic", "vmx-ept", "vmx-desc-exit", "vmx-rdtscp-exit",
+            "vmx-apicv-x2apic", "vmx-vpid", "vmx-wbinvd-exit", "vmx-unrestricted-guest",
+            "vmx-apicv-register", "vmx-apicv-vid", "vmx-ple", "vmx-rdrand-exit",
+            "vmx-invpcid-exit", "vmx-vmfunc", "vmx-shadow-vmcs", "vmx-encls-exit",
+            "vmx-rdseed-exit", "vmx-pml", NULL, NULL,
+            "vmx-xsaves", NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+        },
+        .msr = {
+            .index = MSR_IA32_VMX_PROCBASED_CTLS2,
+        }
+    },
+
+    [FEAT_VMX_PINBASED_CTLS] = {
+        .type = MSR_FEATURE_WORD,
+        .feat_names = {
+            "vmx-intr-exit", NULL, NULL, "vmx-nmi-exit",
+            NULL, "vmx-vnmi", "vmx-preemption-timer", "vmx-posted-intr",
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+        },
+        .msr = {
+            .index = MSR_IA32_VMX_TRUE_PINBASED_CTLS,
+        }
+    },
+
+    [FEAT_VMX_EXIT_CTLS] = {
+        .type = MSR_FEATURE_WORD,
+        /*
+         * VMX_VM_EXIT_HOST_ADDR_SPACE_SIZE is copied from
+         * the LM CPUID bit.
+         */
+        .feat_names = {
+            NULL, NULL, "vmx-exit-nosave-debugctl", NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL /* vmx-exit-host-addr-space-size */, NULL, NULL,
+            "vmx-exit-load-perf-global-ctrl", NULL, NULL, "vmx-exit-ack-intr",
+            NULL, NULL, "vmx-exit-save-pat", "vmx-exit-load-pat",
+            "vmx-exit-save-efer", "vmx-exit-load-efer",
+                "vmx-exit-save-preemption-timer", "vmx-exit-clear-bndcfgs",
+            NULL, "vmx-exit-clear-rtit-ctl", NULL, NULL,
+            NULL, NULL, NULL, NULL,
+        },
+        .msr = {
+            .index = MSR_IA32_VMX_TRUE_EXIT_CTLS,
+        }
+    },
+
+    [FEAT_VMX_ENTRY_CTLS] = {
+        .type = MSR_FEATURE_WORD,
+        .feat_names = {
+            NULL, NULL, "vmx-entry-noload-debugctl", NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, "vmx-entry-ia32e-mode", NULL, NULL,
+            NULL, "vmx-entry-load-perf-global-ctrl", "vmx-entry-load-pat", "vmx-entry-load-efer",
+            "vmx-entry-load-bndcfgs", NULL, "vmx-entry-load-rtit-ctl", NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+        },
+        .msr = {
+            .index = MSR_IA32_VMX_TRUE_ENTRY_CTLS,
+        }
+    },
+
+    [FEAT_VMX_MISC] = {
+        .type = MSR_FEATURE_WORD,
+        .feat_names = {
+            NULL, NULL, NULL, NULL,
+            NULL, "vmx-store-lma", "vmx-activity-hlt", "vmx-activity-shutdown",
+            "vmx-activity-wait-sipi", NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, "vmx-vmwrite-vmexit-fields", "vmx-zero-len-inject", NULL,
+        },
+        .msr = {
+            .index = MSR_IA32_VMX_MISC,
+        }
+    },
+
+    [FEAT_VMX_EPT_VPID_CAPS] = {
+        .type = MSR_FEATURE_WORD,
+        .feat_names = {
+            "vmx-ept-execonly", NULL, NULL, NULL,
+            NULL, NULL, "vmx-page-walk-4", "vmx-page-walk-5",
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            "vmx-ept-2mb", "vmx-ept-1gb", NULL, NULL,
+            "vmx-invept", "vmx-eptad", "vmx-ept-advanced-exitinfo", NULL,
+            NULL, "vmx-invept-single-context", "vmx-invept-all-context", NULL,
+            NULL, NULL, NULL, NULL,
+            "vmx-invvpid", NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            "vmx-invvpid-single-addr", "vmx-invept-single-context",
+                "vmx-invvpid-all-context", "vmx-invept-single-context-noglobals",
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+            NULL, NULL, NULL, NULL,
+        },
+        .msr = {
+            .index = MSR_IA32_VMX_EPT_VPID_CAP,
+        }
+    },
+
+    [FEAT_VMX_BASIC] = {
+        .type = MSR_FEATURE_WORD,
+        .feat_names = {
+            [54] = "vmx-ins-outs",
+            [55] = "vmx-true-ctls",
+        },
+        .msr = {
+            .index = MSR_IA32_VMX_BASIC,
+        },
+        /* Just to be safe - we don't support setting the MSEG version field.  */
+        .no_autoenable_flags = MSR_VMX_BASIC_DUAL_MONITOR,
+    },
+
+    [FEAT_VMX_VMFUNC] = {
+        .type = MSR_FEATURE_WORD,
+        .feat_names = {
+            [0] = "vmx-eptp-switching",
+        },
+        .msr = {
+            .index = MSR_IA32_VMX_VMFUNC,
+        }
+    },
+
 };
 
 typedef struct FeatureMask {
@@ -1252,6 +1409,74 @@ static FeatureDep feature_dependencies[] = {
         .from = { FEAT_7_0_EDX,             CPUID_7_0_EDX_CORE_CAPABILITY },
         .to = { FEAT_CORE_CAPABILITY,       ~0ull },
     },
+    {
+        .from = { FEAT_1_ECX,               CPUID_EXT_VMX },
+        .to = { FEAT_VMX_PROCBASED_CTLS,    ~0ull },
+    },
+    {
+        .from = { FEAT_1_ECX,               CPUID_EXT_VMX },
+        .to = { FEAT_VMX_PINBASED_CTLS,     ~0ull },
+    },
+    {
+        .from = { FEAT_1_ECX,               CPUID_EXT_VMX },
+        .to = { FEAT_VMX_EXIT_CTLS,         ~0ull },
+    },
+    {
+        .from = { FEAT_1_ECX,               CPUID_EXT_VMX },
+        .to = { FEAT_VMX_ENTRY_CTLS,        ~0ull },
+    },
+    {
+        .from = { FEAT_1_ECX,               CPUID_EXT_VMX },
+        .to = { FEAT_VMX_MISC,              ~0ull },
+    },
+    {
+        .from = { FEAT_1_ECX,               CPUID_EXT_VMX },
+        .to = { FEAT_VMX_BASIC,             ~0ull },
+    },
+    {
+        .from = { FEAT_8000_0001_EDX,       CPUID_EXT2_LM },
+        .to = { FEAT_VMX_ENTRY_CTLS,        VMX_VM_ENTRY_IA32E_MODE },
+    },
+    {
+        .from = { FEAT_VMX_PROCBASED_CTLS,  VMX_CPU_BASED_ACTIVATE_SECONDARY_CONTROLS },
+        .to = { FEAT_VMX_SECONDARY_CTLS,    ~0ull },
+    },
+    {
+        .from = { FEAT_XSAVE,               CPUID_XSAVE_XSAVES },
+        .to = { FEAT_VMX_SECONDARY_CTLS,    VMX_SECONDARY_EXEC_XSAVES },
+    },
+    {
+        .from = { FEAT_1_ECX,               CPUID_EXT_RDRAND },
+        .to = { FEAT_VMX_SECONDARY_CTLS,    VMX_SECONDARY_EXEC_RDRAND_EXITING },
+    },
+    {
+        .from = { FEAT_7_0_EBX,             CPUID_7_0_EBX_INVPCID },
+        .to = { FEAT_VMX_SECONDARY_CTLS,    VMX_SECONDARY_EXEC_ENABLE_INVPCID },
+    },
+    {
+        .from = { FEAT_7_0_EBX,             CPUID_7_0_EBX_RDSEED },
+        .to = { FEAT_VMX_SECONDARY_CTLS,    VMX_SECONDARY_EXEC_RDSEED_EXITING },
+    },
+    {
+        .from = { FEAT_8000_0001_EDX,       CPUID_EXT2_RDTSCP },
+        .to = { FEAT_VMX_SECONDARY_CTLS,    VMX_SECONDARY_EXEC_RDTSCP },
+    },
+    {
+        .from = { FEAT_VMX_SECONDARY_CTLS,  VMX_SECONDARY_EXEC_ENABLE_EPT },
+        .to = { FEAT_VMX_EPT_VPID_CAPS,     0xffffffffull },
+    },
+    {
+        .from = { FEAT_VMX_SECONDARY_CTLS,  VMX_SECONDARY_EXEC_ENABLE_EPT },
+        .to = { FEAT_VMX_SECONDARY_CTLS,    VMX_SECONDARY_EXEC_UNRESTRICTED_GUEST },
+    },
+    {
+        .from = { FEAT_VMX_SECONDARY_CTLS,  VMX_SECONDARY_EXEC_ENABLE_VPID },
+        .to = { FEAT_VMX_EPT_VPID_CAPS,     0xffffffffull << 32 },
+    },
+    {
+        .from = { FEAT_VMX_SECONDARY_CTLS,  VMX_SECONDARY_EXEC_ENABLE_VMFUNC },
+        .to = { FEAT_VMX_VMFUNC,            ~0ull },
+    },
 };
 
 typedef struct X86RegisterInfo32 {