[xen stable-4.16] x86/cpuid: Infrastructure for leaves 7:1{ecx,edx}

[patchbot@xxxxxxx]

commit 2094f834b85d32233c76763b014bc8764c3e36b1
Author:     Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
AuthorDate: Fri Mar 3 08:06:44 2023 +0100
Commit:     Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Mar 3 08:06:44 2023 +0100

    x86/cpuid: Infrastructure for leaves 7:1{ecx,edx}
    
    We don't actually need ecx yet, but adding it in now will reduce the amount 
to
    which leaf 7 is out of order in a featureset.
    
    Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
    Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
    master commit: b4a23bf6293aadecfd03bf9e83974443e2eac9cb
    master date: 2023-02-09 18:26:17 +0000
---
 tools/misc/xen-cpuid.c                      | 10 ++++++++++
 xen/arch/x86/cpu/common.c                   |  3 ++-
 xen/include/public/arch-x86/cpufeatureset.h |  4 ++++
 xen/include/xen/lib/x86/cpuid.h             | 17 +++++++++++++++--
 4 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/tools/misc/xen-cpuid.c b/tools/misc/xen-cpuid.c
index cd094427dd..3cfbbf043f 100644
--- a/tools/misc/xen-cpuid.c
+++ b/tools/misc/xen-cpuid.c
@@ -198,6 +198,14 @@ static const char *const str_7b1[32] =
 {
 };
 
+static const char *const str_7c1[32] =
+{
+};
+
+static const char *const str_7d1[32] =
+{
+};
+
 static const char *const str_7d2[32] =
 {
     [ 0] = "intel-psfd",
@@ -223,6 +231,8 @@ static const struct {
     { "0x80000021.eax",  "e21a", str_e21a },
     { "0x00000007:1.ebx", "7b1", str_7b1 },
     { "0x00000007:2.edx", "7d2", str_7d2 },
+    { "0x00000007:1.ecx", "7c1", str_7c1 },
+    { "0x00000007:1.edx", "7d1", str_7d1 },
 };
 
 #define COL_ALIGN "18"
diff --git a/xen/arch/x86/cpu/common.c b/xen/arch/x86/cpu/common.c
index 9ce148a666..8222de6461 100644
--- a/xen/arch/x86/cpu/common.c
+++ b/xen/arch/x86/cpu/common.c
@@ -448,7 +448,8 @@ static void generic_identify(struct cpuinfo_x86 *c)
                        cpuid_count(7, 1,
                                    &c->x86_capability[FEATURESET_7a1],
                                    &c->x86_capability[FEATURESET_7b1],
-                                   &tmp, &tmp);
+                                   &c->x86_capability[FEATURESET_7c1],
+                                   &c->x86_capability[FEATURESET_7d1]);
                if (max_subleaf >= 2)
                        cpuid_count(7, 2,
                                    &tmp, &tmp, &tmp,
diff --git a/xen/include/public/arch-x86/cpufeatureset.h 
b/xen/include/public/arch-x86/cpufeatureset.h
index e073122140..0b01ca5e8f 100644
--- a/xen/include/public/arch-x86/cpufeatureset.h
+++ b/xen/include/public/arch-x86/cpufeatureset.h
@@ -304,6 +304,10 @@ XEN_CPUFEATURE(NSCB,               11*32+ 6) /*A  Null 
Selector Clears Base (and
 /* Intel-defined CPU features, CPUID level 0x00000007:2.edx, word 13 */
 XEN_CPUFEATURE(INTEL_PSFD,         13*32+ 0) /*A  MSR_SPEC_CTRL.PSFD */
 
+/* Intel-defined CPU features, CPUID level 0x00000007:1.ecx, word 14 */
+
+/* Intel-defined CPU features, CPUID level 0x00000007:1.edx, word 15 */
+
 #endif /* XEN_CPUFEATURE */
 
 /* Clean up from a default include.  Close the enum (for C). */
diff --git a/xen/include/xen/lib/x86/cpuid.h b/xen/include/xen/lib/x86/cpuid.h
index 50be07c0eb..fa98b371ee 100644
--- a/xen/include/xen/lib/x86/cpuid.h
+++ b/xen/include/xen/lib/x86/cpuid.h
@@ -17,7 +17,9 @@
 #define FEATURESET_7a1   10 /* 0x00000007:1.eax    */
 #define FEATURESET_e21a  11 /* 0x80000021.eax      */
 #define FEATURESET_7b1   12 /* 0x00000007:1.ebx    */
-#define FEATURESET_7d2   13 /* 0x80000007:2.edx    */
+#define FEATURESET_7d2   13 /* 0x00000007:2.edx    */
+#define FEATURESET_7c1   14 /* 0x00000007:1.ecx    */
+#define FEATURESET_7d1   15 /* 0x00000007:1.edx    */
 
 struct cpuid_leaf
 {
@@ -194,7 +196,14 @@ struct cpuid_policy
                 uint32_t _7b1;
                 struct { DECL_BITFIELD(7b1); };
             };
-            uint32_t /* c */:32, /* d */:32;
+            union {
+                uint32_t _7c1;
+                struct { DECL_BITFIELD(7c1); };
+            };
+            union {
+                uint32_t _7d1;
+                struct { DECL_BITFIELD(7d1); };
+            };
 
             /* Subleaf 2. */
             uint32_t /* a */:32, /* b */:32, /* c */:32;
@@ -343,6 +352,8 @@ static inline void cpuid_policy_to_featureset(
     fs[FEATURESET_e21a] = p->extd.e21a;
     fs[FEATURESET_7b1] = p->feat._7b1;
     fs[FEATURESET_7d2] = p->feat._7d2;
+    fs[FEATURESET_7c1] = p->feat._7c1;
+    fs[FEATURESET_7d1] = p->feat._7d1;
 }
 
 /* Fill in a CPUID policy from a featureset bitmap. */
@@ -363,6 +374,8 @@ static inline void cpuid_featureset_to_policy(
     p->extd.e21a  = fs[FEATURESET_e21a];
     p->feat._7b1  = fs[FEATURESET_7b1];
     p->feat._7d2  = fs[FEATURESET_7d2];
+    p->feat._7c1  = fs[FEATURESET_7c1];
+    p->feat._7d1  = fs[FEATURESET_7d1];
 }
 
 static inline uint64_t cpuid_policy_xcr0_max(const struct cpuid_policy *p)
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.16