x86/cpuid: More AMD features

All of these are informational and require no further logic changes in Xen to
support.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>

tools/misc/xen-cpuid.c

@@ -91,6 +91,7 @@ static const char *const str_e1c[32] =
     [24] = "perfctr-nb", /* [25] */
     [26] = "dbx",        [27] = "perftsc",
     [28] = "pcx-l2i",    [29] = "monitorx",
+    [30] = "addr-msk-ext",
 };
 
 static const char *const str_7b0[32] =
@@ -199,11 +200,15 @@ static const char *const str_7a1[32] =
 
 static const char *const str_e21a[32] =
 {
+    [ 0] = "no-nest-bp",    [ 1] = "fs-gs-ns",
     [ 2] = "lfence+",
     [ 6] = "nscb",
     [ 8] = "auto-ibrs",
+    [10] = "amd-fsrs",      [11] = "amd-fsrc",
 
     /* 16 */                [17] = "cpuid-user-dis",
+    [18] = "epsf",          [19] = "fsrsc",
+    [20] = "amd-prefetchi",
 
     /* 26 */                [27] = "sbpb",
     [28] = "ibpb-brtype",   [29] = "srso-no",

xen/include/public/arch-x86/cpufeatureset.h

@@ -168,6 +168,7 @@ XEN_CPUFEATURE(TBM,           3*32+21) /*A  trailing bit manipulations */
 XEN_CPUFEATURE(TOPOEXT,       3*32+22) /*   topology extensions CPUID leafs */
 XEN_CPUFEATURE(DBEXT,         3*32+26) /*A  data breakpoint extension */
 XEN_CPUFEATURE(MONITORX,      3*32+29) /*   MONITOR extension (MONITORX/MWAITX) */
+XEN_CPUFEATURE(ADDR_MSK_EXT,  3*32+30) /*A  Address Mask Extentions */
 
 /* Intel-defined CPU features, CPUID level 0x0000000D:1.eax, word 4 */
 XEN_CPUFEATURE(XSAVEOPT,      4*32+ 0) /*A  XSAVEOPT instruction */
@@ -290,10 +291,17 @@ XEN_CPUFEATURE(WRMSRNS,      10*32+19) /*S  WRMSR Non-Serialising */
 XEN_CPUFEATURE(AVX_IFMA,     10*32+23) /*A  AVX-IFMA Instructions */
 
 /* AMD-defined CPU features, CPUID level 0x80000021.eax, word 11 */
+XEN_CPUFEATURE(NO_NEST_BP,         11*32+ 0) /*A  No Nested Data Breakpoints */
+XEN_CPUFEATURE(FS_GS_NS,           11*32+ 1) /*S  FS/GS base MSRs non-serialising */
 XEN_CPUFEATURE(LFENCE_DISPATCH,    11*32+ 2) /*A  LFENCE always serializing */
 XEN_CPUFEATURE(NSCB,               11*32+ 6) /*A  Null Selector Clears Base (and limit too) */
 XEN_CPUFEATURE(AUTO_IBRS,          11*32+ 8) /*S  Automatic IBRS */
+XEN_CPUFEATURE(AMD_FSRS,           11*32+10) /*A  Fast Short REP STOSB */
+XEN_CPUFEATURE(AMD_FSRC,           11*32+11) /*A  Fast Short REP CMPSB */
 XEN_CPUFEATURE(CPUID_USER_DIS,     11*32+17) /*   CPUID disable for CPL > 0 software */
+XEN_CPUFEATURE(EPSF,               11*32+18) /*A  Enhanced Predictive Store Forwarding */
+XEN_CPUFEATURE(FSRSC,              11*32+19) /*A  Fast Short REP SCASB */
+XEN_CPUFEATURE(AMD_PREFETCHI,      11*32+20) /*A  PREFETCHIT{0,1} Instructions */
 XEN_CPUFEATURE(SBPB,               11*32+27) /*A  Selective Branch Predictor Barrier */
 XEN_CPUFEATURE(IBPB_BRTYPE,        11*32+28) /*A  IBPB flushes Branch Type predictions too */
 XEN_CPUFEATURE(SRSO_NO,            11*32+29) /*A  Hardware not vulenrable to Speculative Return Stack Overflow */

xen/tools/gen-cpuid.py

@@ -329,6 +329,10 @@ def crunch_numbers(state):
         # In principle the TSXLDTRK insns could also be considered independent.
         RTM: [TSXLDTRK],
 
+        # Enhanced Predictive Store-Forwarding is a informational note on top
+        # of PSF.
+        PSFD: [EPSF],
+
         # The ARCH_CAPS CPUID bit enumerates the availability of the whole register.
         ARCH_CAPS: list(range(RDCL_NO, RDCL_NO + 64)),