Merge tag 'perf-urgent-2024-05-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf event updates from Ingo Molnar:

 - Extend the x86 instruction decoder with APX and
   other new instructions

 - Misc cleanups

* tag 'perf-urgent-2024-05-18' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/cstate: Remove unused 'struct perf_cstate_msr'
  perf/x86/rapl: Rename 'maxdie' to nr_rapl_pmu and 'dieid' to rapl_pmu_idx
  x86/insn: Add support for APX EVEX instructions to the opcode map
  x86/insn: Add support for APX EVEX to the instruction decoder logic
  x86/insn: x86/insn: Add support for REX2 prefix to the instruction decoder opcode map
  x86/insn: Add support for REX2 prefix to the instruction decoder logic
  x86/insn: Add misc new Intel instructions
  x86/insn: Add VEX versions of VPDPBUSD, VPDPBUSDS, VPDPWSSD and VPDPWSSDS
  x86/insn: Fix PUSH instruction in x86 instruction decoder opcode map
  x86/insn: Add Key Locker instructions to the opcode map

2 files changed, 44 insertions, 5 deletions

diff --git a/arch/x86/include/asm/inat.h b/arch/x86/include/asm/inat.h
index b56c5741581a..53e4015242b4 100644
--- a/arch/x86/include/asm/inat.h
+++ b/arch/x86/include/asm/inat.h
@@ -35,6 +35,8 @@
 #define INAT_PFX_VEX2	13	/* 2-bytes VEX prefix */
 #define INAT_PFX_VEX3	14	/* 3-bytes VEX prefix */
 #define INAT_PFX_EVEX	15	/* EVEX prefix */
+/* x86-64 REX2 prefix */
+#define INAT_PFX_REX2	16	/* 0xD5 */
 
 #define INAT_LSTPFX_MAX	3
 #define INAT_LGCPFX_MAX	11
@@ -50,7 +52,7 @@
 
 /* Legacy prefix */
 #define INAT_PFX_OFFS	0
-#define INAT_PFX_BITS	4
+#define INAT_PFX_BITS	5
 #define INAT_PFX_MAX    ((1 << INAT_PFX_BITS) - 1)
 #define INAT_PFX_MASK	(INAT_PFX_MAX << INAT_PFX_OFFS)
 /* Escape opcodes */
@@ -77,6 +79,9 @@
 #define INAT_VEXOK	(1 << (INAT_FLAG_OFFS + 5))
 #define INAT_VEXONLY	(1 << (INAT_FLAG_OFFS + 6))
 #define INAT_EVEXONLY	(1 << (INAT_FLAG_OFFS + 7))
+#define INAT_NO_REX2	(1 << (INAT_FLAG_OFFS + 8))
+#define INAT_REX2_VARIANT	(1 << (INAT_FLAG_OFFS + 9))
+#define INAT_EVEX_SCALABLE	(1 << (INAT_FLAG_OFFS + 10))
 /* Attribute making macros for attribute tables */
 #define INAT_MAKE_PREFIX(pfx)	(pfx << INAT_PFX_OFFS)
 #define INAT_MAKE_ESCAPE(esc)	(esc << INAT_ESC_OFFS)
@@ -128,6 +133,11 @@ static inline int inat_is_rex_prefix(insn_attr_t attr)
 	return (attr & INAT_PFX_MASK) == INAT_PFX_REX;
 }
 
+static inline int inat_is_rex2_prefix(insn_attr_t attr)
+{
+	return (attr & INAT_PFX_MASK) == INAT_PFX_REX2;
+}
+
 static inline int inat_last_prefix_id(insn_attr_t attr)
 {
 	if ((attr & INAT_PFX_MASK) > INAT_LSTPFX_MAX)
@@ -227,4 +237,9 @@ static inline int inat_must_evex(insn_attr_t attr)
 {
 	return attr & INAT_EVEXONLY;
 }
+
+static inline int inat_evex_scalable(insn_attr_t attr)
+{
+	return attr & INAT_EVEX_SCALABLE;
+}
 #endif
diff --git a/arch/x86/include/asm/insn.h b/arch/x86/include/asm/insn.h
index 1b29f58f730f..7152ea809e6a 100644
--- a/arch/x86/include/asm/insn.h
+++ b/arch/x86/include/asm/insn.h
@@ -112,10 +112,15 @@ struct insn {
 #define X86_SIB_INDEX(sib) (((sib) & 0x38) >> 3)
 #define X86_SIB_BASE(sib) ((sib) & 0x07)
 
-#define X86_REX_W(rex) ((rex) & 8)
-#define X86_REX_R(rex) ((rex) & 4)
-#define X86_REX_X(rex) ((rex) & 2)
-#define X86_REX_B(rex) ((rex) & 1)
+#define X86_REX2_M(rex) ((rex) & 0x80)	/* REX2 M0 */
+#define X86_REX2_R(rex) ((rex) & 0x40)	/* REX2 R4 */
+#define X86_REX2_X(rex) ((rex) & 0x20)	/* REX2 X4 */
+#define X86_REX2_B(rex) ((rex) & 0x10)	/* REX2 B4 */
+
+#define X86_REX_W(rex) ((rex) & 8)	/* REX or REX2 W */
+#define X86_REX_R(rex) ((rex) & 4)	/* REX or REX2 R3 */
+#define X86_REX_X(rex) ((rex) & 2)	/* REX or REX2 X3 */
+#define X86_REX_B(rex) ((rex) & 1)	/* REX or REX2 B3 */
 
 /* VEX bit flags  */
 #define X86_VEX_W(vex)	((vex) & 0x80)	/* VEX3 Byte2 */
@@ -161,6 +166,18 @@ static inline void insn_get_attribute(struct insn *insn)
 /* Instruction uses RIP-relative addressing */
 extern int insn_rip_relative(struct insn *insn);
 
+static inline int insn_is_rex2(struct insn *insn)
+{
+	if (!insn->prefixes.got)
+		insn_get_prefixes(insn);
+	return insn->rex_prefix.nbytes == 2;
+}
+
+static inline insn_byte_t insn_rex2_m_bit(struct insn *insn)
+{
+	return X86_REX2_M(insn->rex_prefix.bytes[1]);
+}
+
 static inline int insn_is_avx(struct insn *insn)
 {
 	if (!insn->prefixes.got)
@@ -198,6 +215,13 @@ static inline insn_byte_t insn_vex_p_bits(struct insn *insn)
 		return X86_VEX_P(insn->vex_prefix.bytes[2]);
 }
 
+static inline insn_byte_t insn_vex_w_bit(struct insn *insn)
+{
+	if (insn->vex_prefix.nbytes < 3)
+		return 0;
+	return X86_VEX_W(insn->vex_prefix.bytes[2]);
+}
+
 /* Get the last prefix id from last prefix or VEX prefix */
 static inline int insn_last_prefix_id(struct insn *insn)
 {