From 2bd30b8dc75b823dd7bbef9d7bc68e1fd7ecee5c Mon Sep 17 00:00:00 2001 From: Sang-Heon Jeon Date: Mon, 24 Aug 2026 01:18:14 +0900 Subject: coccinelle: alloc_cast: drop removed allocators - pci_alloc_consistent() and pci_zalloc_consistent() were removed by commit 7968778914e5 ("PCI: Remove the deprecated "pci-dma-compat.h" API") - kmem_alloc() was removed by commit f078d4ea8276 ("xfs: convert kmem_alloc() to kmalloc()") - kmem_zalloc() was removed by commit 10634530f7ba ("xfs: convert kmem_zalloc() to kzalloc()") - kmem_zone_alloc() and kmem_zone_zalloc() were removed by commit bae633a4a283 ("xfs: remove xfs_zone_{alloc,zalloc} helpers") So drop them from the rules. No functional change. Signed-off-by: Sang-Heon Jeon Signed-off-by: Julia Lawall --- arch/x86/boot/cpu.c | 86 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 arch/x86/boot/cpu.c (limited to 'arch/x86/boot/cpu.c') diff --git a/arch/x86/boot/cpu.c b/arch/x86/boot/cpu.c new file mode 100644 index 000000000..feb6dbd7c --- /dev/null +++ b/arch/x86/boot/cpu.c @@ -0,0 +1,86 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* -*- linux-c -*- ------------------------------------------------------- * + * + * Copyright (C) 1991, 1992 Linus Torvalds + * Copyright 2007-2008 rPath, Inc. - All Rights Reserved + * + * ----------------------------------------------------------------------- */ + +/* + * arch/x86/boot/cpu.c + * + * Check for obligatory CPU features and abort if the features are not + * present. + */ + +#include "boot.h" +#include "cpustr.h" + +static char *cpu_name(int level) +{ + static char buf[6]; + + if (level == 64) { + return "x86-64"; + } else { + if (level == 15) + level = 6; + sprintf(buf, "i%d86", level); + return buf; + } +} + +static void show_cap_strs(u32 *err_flags) +{ + int i, j; + const unsigned char *msg_strs = (const unsigned char *)x86_cap_strs; + for (i = 0; i < NCAPINTS; i++) { + u32 e = err_flags[i]; + for (j = 0; j < 32; j++) { + if (msg_strs[0] < i || + (msg_strs[0] == i && msg_strs[1] < j)) { + /* Skip to the next string */ + msg_strs += 2; + while (*msg_strs++) + ; + } + if (e & 1) { + if (msg_strs[0] == i && + msg_strs[1] == j && + msg_strs[2]) + printf("%s ", msg_strs+2); + else + printf("%d:%d ", i, j); + } + e >>= 1; + } + } +} + +int validate_cpu(void) +{ + u32 *err_flags; + int cpu_level, req_level; + + check_cpu(&cpu_level, &req_level, &err_flags); + + if (cpu_level < req_level) { + printf("This kernel requires an %s CPU, ", + cpu_name(req_level)); + printf("but only detected an %s CPU.\n", + cpu_name(cpu_level)); + return -1; + } + + if (err_flags) { + puts("This kernel requires the following features " + "not present on the CPU:\n"); + show_cap_strs(err_flags); + putchar('\n'); + return -1; + } else if (check_knl_erratum()) { + return -1; + } else { + return 0; + } +} -- cgit v1.3.1