Merge tag 'x86-misc-2024-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull misc x86 updates from Thomas Gleixner:

 - Rework kcpuid to handle the the autogenerated CSV file correctly and
   update the CSV file to cover the whole zoo of CPUID.

 - Avoid memcpy() for ia32 syscall_get_arguments() and use direct
   assignments as fortified memcpy() is unhappy about writing/reading
   beyond the end of the addresses destination/source struct member

 - A few new PCI IDs for AMD

 - Update MAINTAINERS to cover x86 specific selftests

* tag 'x86-misc-2024-09-17' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  MAINTAINERS: Add selftests/x86 entry
  x86/amd_nb: Add new PCI IDs for AMD family 1Ah model 60h-70h
  x86/syscall: Avoid memcpy() for ia32 syscall_get_arguments()
  MAINTAINERS: Add x86 cpuid database entry
  tools/x86/kcpuid: Introduce a complete cpuid bitfields CSV file
  tools/x86/kcpuid: Parse subleaf ranges if provided
  tools/x86/kcpuid: Recognize all leaves with subleaves
  tools/x86/kcpuid: Strip bitfield names leading/trailing whitespace
  tools/x86/kcpuid: Protect against faulty "max subleaf" values
  tools/x86/kcpuid: Set max possible subleaves count to 64
  tools/x86/kcpuid: Properly align long-description columns
  tools/x86/kcpuid: Remove unused variable
  x86/amd_nb: Add new PCI IDs for AMD family 1Ah model 60h

MAINTAINERS

@@ -24915,6 +24915,17 @@ T:	git git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git x86/core
 F:	Documentation/arch/x86/
 F:	Documentation/devicetree/bindings/x86/
 F:	arch/x86/
+F:	tools/testing/selftests/x86
+
+X86 CPUID DATABASE
+M:	Borislav Petkov <bp@alien8.de>
+M:	Thomas Gleixner <tglx@linutronix.de>
+M:	x86@kernel.org
+R:	Ahmed S. Darwish <darwi@linutronix.de>
+L:	x86-cpuid@lists.linux.dev
+S:	Maintained
+W:	https://x86-cpuid.org
+F:	tools/arch/x86/kcpuid/cpuid.csv
 
 X86 ENTRY CODE
 M:	Andy Lutomirski <luto@kernel.org>

arch/x86/include/asm/syscall.h

@@ -82,7 +82,12 @@ static inline void syscall_get_arguments(struct task_struct *task,
 					 struct pt_regs *regs,
 					 unsigned long *args)
 {
-	memcpy(args, &regs->bx, 6 * sizeof(args[0]));
+	args[0] = regs->bx;
+	args[1] = regs->cx;
+	args[2] = regs->dx;
+	args[3] = regs->si;
+	args[4] = regs->di;
+	args[5] = regs->bp;
 }
 
 static inline int syscall_get_arch(struct task_struct *task)

arch/x86/kernel/amd_nb.c

@@ -26,6 +26,7 @@
 #define PCI_DEVICE_ID_AMD_19H_M70H_ROOT		0x14e8
 #define PCI_DEVICE_ID_AMD_1AH_M00H_ROOT		0x153a
 #define PCI_DEVICE_ID_AMD_1AH_M20H_ROOT		0x1507
+#define PCI_DEVICE_ID_AMD_1AH_M60H_ROOT		0x1122
 #define PCI_DEVICE_ID_AMD_MI200_ROOT		0x14bb
 #define PCI_DEVICE_ID_AMD_MI300_ROOT		0x14f8
 
@@ -43,6 +44,8 @@
 #define PCI_DEVICE_ID_AMD_19H_M70H_DF_F4	0x14f4
 #define PCI_DEVICE_ID_AMD_19H_M78H_DF_F4	0x12fc
 #define PCI_DEVICE_ID_AMD_1AH_M00H_DF_F4	0x12c4
+#define PCI_DEVICE_ID_AMD_1AH_M60H_DF_F4	0x124c
+#define PCI_DEVICE_ID_AMD_1AH_M70H_DF_F4	0x12bc
 #define PCI_DEVICE_ID_AMD_MI200_DF_F4		0x14d4
 #define PCI_DEVICE_ID_AMD_MI300_DF_F4		0x152c
 
@@ -63,6 +66,7 @@ static const struct pci_device_id amd_root_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M70H_ROOT) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M00H_ROOT) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M20H_ROOT) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M60H_ROOT) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_MI200_ROOT) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_MI300_ROOT) },
 	{}
@@ -95,6 +99,7 @@ static const struct pci_device_id amd_nb_misc_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M78H_DF_F3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M00H_DF_F3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M20H_DF_F3) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M60H_DF_F3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M70H_DF_F3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_MI200_DF_F3) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_MI300_DF_F3) },
@@ -122,6 +127,8 @@ static const struct pci_device_id amd_nb_link_ids[] = {
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_19H_M78H_DF_F4) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_CNB17H_F4) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M00H_DF_F4) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M60H_DF_F4) },
+	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_1AH_M70H_DF_F4) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_MI200_DF_F4) },
 	{ PCI_DEVICE(PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_MI300_DF_F4) },
 	{}

drivers/hwmon/k10temp.c

@@ -548,6 +548,7 @@ static const struct pci_device_id k10temp_id_table[] = {
 	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_19H_M78H_DF_F3) },
 	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_1AH_M00H_DF_F3) },
 	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_1AH_M20H_DF_F3) },
+	{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_1AH_M60H_DF_F3) },
 	{ PCI_VDEVICE(HYGON, PCI_DEVICE_ID_AMD_17H_DF_F3) },
 	{}
 };

include/linux/pci_ids.h

@@ -580,6 +580,7 @@
 #define PCI_DEVICE_ID_AMD_19H_M78H_DF_F3 0x12fb
 #define PCI_DEVICE_ID_AMD_1AH_M00H_DF_F3 0x12c3
 #define PCI_DEVICE_ID_AMD_1AH_M20H_DF_F3 0x16fb
+#define PCI_DEVICE_ID_AMD_1AH_M60H_DF_F3 0x124b
 #define PCI_DEVICE_ID_AMD_1AH_M70H_DF_F3 0x12bb
 #define PCI_DEVICE_ID_AMD_MI200_DF_F3	0x14d3
 #define PCI_DEVICE_ID_AMD_MI300_DF_F3	0x152b

tools/arch/x86/kcpuid/kcpuid.c

@@ -8,6 +8,7 @@
 #include <getopt.h>
 
 #define ARRAY_SIZE(x)	(sizeof(x) / sizeof((x)[0]))
+#define min(a, b)	(((a) < (b)) ? (a) : (b))
 
 typedef unsigned int u32;
 typedef unsigned long long u64;
@@ -76,7 +77,6 @@ struct cpuid_range {
  */
 struct cpuid_range *leafs_basic, *leafs_ext;
 
-static int num_leafs;
 static bool is_amd;
 static bool show_details;
 static bool show_raw;
@@ -98,27 +98,17 @@ static inline void cpuid(u32 *eax, u32 *ebx, u32 *ecx, u32 *edx)
 
 static inline bool has_subleafs(u32 f)
 {
-	if (f == 0x7 || f == 0xd)
+	u32 with_subleaves[] = {
+		0x4,  0x7,  0xb,  0xd,  0xf,  0x10, 0x12,
+		0x14, 0x17, 0x18, 0x1b, 0x1d, 0x1f, 0x23,
+		0x8000001d, 0x80000020, 0x80000026,
+	};
+
+	for (unsigned i = 0; i < ARRAY_SIZE(with_subleaves); i++)
+		if (f == with_subleaves[i])
 			return true;
 
-	if (is_amd) {
-		if (f == 0x8000001d)
-			return true;
-		return false;
-	}
-
-	switch (f) {
-	case 0x4:
-	case 0xb:
-	case 0xf:
-	case 0x10:
-	case 0x14:
-	case 0x18:
-	case 0x1f:
-		return true;
-	default:
 	return false;
-	}
 }
 
 static void leaf_print_raw(struct subleaf *leaf)
@@ -204,15 +194,12 @@ static void raw_dump_range(struct cpuid_range *range)
 	}
 }
 
-#define MAX_SUBLEAF_NUM		32
+#define MAX_SUBLEAF_NUM		64
 struct cpuid_range *setup_cpuid_range(u32 input_eax)
 {
-	u32 max_func, idx_func;
-	int subleaf;
+	u32 max_func, idx_func, subleaf, max_subleaf;
+	u32 eax, ebx, ecx, edx, f = input_eax;
 	struct cpuid_range *range;
-	u32 eax, ebx, ecx, edx;
-	u32 f = input_eax;
-	int max_subleaf;
 	bool allzero;
 
 	eax = input_eax;
@@ -246,7 +233,6 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
 		allzero = cpuid_store(range, f, subleaf, eax, ebx, ecx, edx);
 		if (allzero)
 			continue;
-		num_leafs++;
 
 		if (!has_subleafs(f))
 			continue;
@@ -257,11 +243,18 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
 		 * Some can provide the exact number of subleafs,
 		 * others have to be tried (0xf)
 		 */
-		if (f == 0x7 || f == 0x14 || f == 0x17 || f == 0x18)
-			max_subleaf = (eax & 0xff) + 1;
-
+		if (f == 0x7 || f == 0x14 || f == 0x17 || f == 0x18 || f == 0x1d)
+			max_subleaf = min((eax & 0xff) + 1, max_subleaf);
 		if (f == 0xb)
 			max_subleaf = 2;
+		if (f == 0x1f)
+			max_subleaf = 6;
+		if (f == 0x23)
+			max_subleaf = 4;
+		if (f == 0x80000020)
+			max_subleaf = 4;
+		if (f == 0x80000026)
+			max_subleaf = 5;
 
 		for (subleaf = 1; subleaf < max_subleaf; subleaf++) {
 			eax = f;
@@ -272,7 +265,6 @@ struct cpuid_range *setup_cpuid_range(u32 input_eax)
 						eax, ebx, ecx, edx);
 			if (allzero)
 				continue;
-			num_leafs++;
 		}
 
 	}
@@ -313,6 +305,8 @@ static int parse_line(char *line)
 	struct bits_desc *bdesc;
 	int reg_index;
 	char *start, *end;
+	u32 subleaf_start, subleaf_end;
+	unsigned bit_start, bit_end;
 
 	/* Skip comments and NULL line */
 	if (line[0] == '#' || line[0] == '\n')
@@ -351,13 +345,25 @@ static int parse_line(char *line)
 		return 0;
 
 	/* subleaf */
-	sub = strtoul(tokens[1], NULL, 0);
-	if ((int)sub > func->nr)
-		return -1;
+	buf = tokens[1];
+	end = strtok(buf, ":");
+	start = strtok(NULL, ":");
+	subleaf_end = strtoul(end, NULL, 0);
 
-	leaf = &func->leafs[sub];
-	buf = tokens[2];
+	/* A subleaf range is given? */
+	if (start) {
+		subleaf_start = strtoul(start, NULL, 0);
+		subleaf_end = min(subleaf_end, (u32)(func->nr - 1));
+		if (subleaf_start > subleaf_end)
+			return 0;
+	} else {
+		subleaf_start = subleaf_end;
+		if (subleaf_start > (u32)(func->nr - 1))
+			return 0;
+	}
 
+	/* register */
+	buf = tokens[2];
 	if (strcasestr(buf, "EAX"))
 		reg_index = R_EAX;
 	else if (strcasestr(buf, "EBX"))
@@ -369,23 +375,23 @@ static int parse_line(char *line)
 	else
 		goto err_exit;
 
-	reg = &leaf->info[reg_index];
-	bdesc = &reg->descs[reg->nr++];
-
 	/* bit flag or bits field */
 	buf = tokens[3];
-
 	end = strtok(buf, ":");
-	bdesc->end = strtoul(end, NULL, 0);
-	bdesc->start = bdesc->end;
-
-	/* start != NULL means it is bit fields */
 	start = strtok(NULL, ":");
-	if (start)
-		bdesc->start = strtoul(start, NULL, 0);
+	bit_end = strtoul(end, NULL, 0);
+	bit_start = (start) ? strtoul(start, NULL, 0) : bit_end;
 
-	strcpy(bdesc->simp, tokens[4]);
+	for (sub = subleaf_start; sub <= subleaf_end; sub++) {
+		leaf = &func->leafs[sub];
+		reg = &leaf->info[reg_index];
+		bdesc = &reg->descs[reg->nr++];
+
+		bdesc->end = bit_end;
+		bdesc->start = bit_start;
+		strcpy(bdesc->simp, strtok(tokens[4], " \t"));
 		strcpy(bdesc->detail, tokens[5]);
+	}
 	return 0;
 
 err_exit:
@@ -452,8 +458,9 @@ static void decode_bits(u32 value, struct reg_desc *rdesc, enum cpuid_reg reg)
 		if (start == end) {
 			/* single bit flag */
 			if (value & (1 << start))
-				printf("\t%-20s %s%s\n",
+				printf("\t%-20s %s%s%s\n",
 					bdesc->simp,
+				        show_flags_only ? "" : "\t\t\t",
 					show_details ? "-" : "",
 					show_details ? bdesc->detail : ""
 					);