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-rw-r--r--arch/x86/kernel/acpi/wakeup_32.S2
-rw-r--r--arch/x86/kernel/acpi/wakeup_64.S12
-rw-r--r--arch/x86/kernel/alternative.c7
-rw-r--r--arch/x86/kernel/apic/io_apic.c2
-rw-r--r--arch/x86/kernel/apic/x2apic_uv_x.c7
-rw-r--r--arch/x86/kernel/cpu/amd.c8
-rw-r--r--arch/x86/kernel/cpu/bugs.c12
-rw-r--r--arch/x86/kernel/cpu/cacheinfo.c1
-rw-r--r--arch/x86/kernel/cpu/match.c31
-rw-r--r--arch/x86/kernel/cpu/mtrr/cleanup.c3
-rw-r--r--arch/x86/kernel/cpu/resctrl/pseudo_lock.c7
-rw-r--r--arch/x86/kernel/e820.c9
-rw-r--r--arch/x86/kernel/early_printk.c4
-rw-r--r--arch/x86/kernel/fpu/xstate.c2
-rw-r--r--arch/x86/kernel/ftrace.c3
-rw-r--r--arch/x86/kernel/hw_breakpoint.c5
-rw-r--r--arch/x86/kernel/kexec-bzimage64.c4
-rw-r--r--arch/x86/kernel/kgdb.c1
-rw-r--r--arch/x86/kernel/kprobes/core.c7
-rw-r--r--arch/x86/kernel/kprobes/opt.c4
-rw-r--r--arch/x86/kernel/process.c12
-rw-r--r--arch/x86/kernel/setup_percpu.c2
-rw-r--r--arch/x86/kernel/smpboot.c10
-rw-r--r--arch/x86/kernel/traps.c1
-rw-r--r--arch/x86/kernel/uprobes.c1
-rw-r--r--arch/x86/kernel/vmlinux.lds.S4
26 files changed, 105 insertions, 56 deletions
diff --git a/arch/x86/kernel/acpi/wakeup_32.S b/arch/x86/kernel/acpi/wakeup_32.S
index 0c26b1b44e51a..4203d4f0c68d0 100644
--- a/arch/x86/kernel/acpi/wakeup_32.S
+++ b/arch/x86/kernel/acpi/wakeup_32.S
@@ -90,7 +90,7 @@ ret_point:
.data
ALIGN
ENTRY(saved_magic) .long 0
-ENTRY(saved_eip) .long 0
+saved_eip: .long 0
# saved registers
saved_idt: .long 0,0
diff --git a/arch/x86/kernel/acpi/wakeup_64.S b/arch/x86/kernel/acpi/wakeup_64.S
index 50b8ed0317a34..510fa12aab73a 100644
--- a/arch/x86/kernel/acpi/wakeup_64.S
+++ b/arch/x86/kernel/acpi/wakeup_64.S
@@ -125,12 +125,12 @@ ENTRY(do_suspend_lowlevel)
ENDPROC(do_suspend_lowlevel)
.data
-ENTRY(saved_rbp) .quad 0
-ENTRY(saved_rsi) .quad 0
-ENTRY(saved_rdi) .quad 0
-ENTRY(saved_rbx) .quad 0
+saved_rbp: .quad 0
+saved_rsi: .quad 0
+saved_rdi: .quad 0
+saved_rbx: .quad 0
-ENTRY(saved_rip) .quad 0
-ENTRY(saved_rsp) .quad 0
+saved_rip: .quad 0
+saved_rsp: .quad 0
ENTRY(saved_magic) .quad 0
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
index ebeac487a20c7..9a79c7808f9cc 100644
--- a/arch/x86/kernel/alternative.c
+++ b/arch/x86/kernel/alternative.c
@@ -11,6 +11,7 @@
#include <linux/stop_machine.h>
#include <linux/slab.h>
#include <linux/kdebug.h>
+#include <linux/kprobes.h>
#include <asm/text-patching.h>
#include <asm/alternative.h>
#include <asm/sections.h>
@@ -393,10 +394,10 @@ void __init_or_module noinline apply_alternatives(struct alt_instr *start,
continue;
}
- DPRINTK("feat: %d*32+%d, old: (%px len: %d), repl: (%px, len: %d), pad: %d",
+ DPRINTK("feat: %d*32+%d, old: (%pS (%px) len: %d), repl: (%px, len: %d), pad: %d",
a->cpuid >> 5,
a->cpuid & 0x1f,
- instr, a->instrlen,
+ instr, instr, a->instrlen,
replacement, a->replacementlen, a->padlen);
DUMP_BYTES(instr, a->instrlen, "%px: old_insn: ", instr);
@@ -764,8 +765,8 @@ int poke_int3_handler(struct pt_regs *regs)
regs->ip = (unsigned long) bp_int3_handler;
return 1;
-
}
+NOKPROBE_SYMBOL(poke_int3_handler);
/**
* text_poke_bp() -- update instructions on live kernel on SMP
diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index 2953bbf05c085..264e3221d9233 100644
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -812,6 +812,7 @@ static int irq_polarity(int idx)
return IOAPIC_POL_HIGH;
case MP_IRQPOL_RESERVED:
pr_warn("IOAPIC: Invalid polarity: 2, defaulting to low\n");
+ /* fall through */
case MP_IRQPOL_ACTIVE_LOW:
default: /* Pointless default required due to do gcc stupidity */
return IOAPIC_POL_LOW;
@@ -859,6 +860,7 @@ static int irq_trigger(int idx)
return IOAPIC_EDGE;
case MP_IRQTRIG_RESERVED:
pr_warn("IOAPIC: Invalid trigger mode 2 defaulting to level\n");
+ /* fall through */
case MP_IRQTRIG_LEVEL:
default: /* Pointless default required due to do gcc stupidity */
return IOAPIC_LEVEL;
diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index a555da0941570..1e225528f0d7f 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -27,6 +27,7 @@
#include <linux/crash_dump.h>
#include <linux/reboot.h>
#include <linux/memory.h>
+#include <linux/numa.h>
#include <asm/uv/uv_mmrs.h>
#include <asm/uv/uv_hub.h>
@@ -1390,7 +1391,7 @@ static void __init build_socket_tables(void)
}
/* Set socket -> node values: */
- lnid = -1;
+ lnid = NUMA_NO_NODE;
for_each_present_cpu(cpu) {
int nid = cpu_to_node(cpu);
int apicid, sockid;
@@ -1521,7 +1522,7 @@ static void __init uv_system_init_hub(void)
new_hub->pnode = 0xffff;
new_hub->numa_blade_id = uv_node_to_blade_id(nodeid);
- new_hub->memory_nid = -1;
+ new_hub->memory_nid = NUMA_NO_NODE;
new_hub->nr_possible_cpus = 0;
new_hub->nr_online_cpus = 0;
}
@@ -1538,7 +1539,7 @@ static void __init uv_system_init_hub(void)
uv_cpu_info_per(cpu)->p_uv_hub_info = uv_hub_info_list(nodeid);
uv_cpu_info_per(cpu)->blade_cpu_id = uv_cpu_hub_info(cpu)->nr_possible_cpus++;
- if (uv_cpu_hub_info(cpu)->memory_nid == -1)
+ if (uv_cpu_hub_info(cpu)->memory_nid == NUMA_NO_NODE)
uv_cpu_hub_info(cpu)->memory_nid = cpu_to_node(cpu);
/* Init memoryless node: */
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c
index 69f6bbb41be0b..01004bfb1a1bc 100644
--- a/arch/x86/kernel/cpu/amd.c
+++ b/arch/x86/kernel/cpu/amd.c
@@ -819,11 +819,9 @@ static void init_amd_bd(struct cpuinfo_x86 *c)
static void init_amd_zn(struct cpuinfo_x86 *c)
{
set_cpu_cap(c, X86_FEATURE_ZEN);
- /*
- * Fix erratum 1076: CPB feature bit not being set in CPUID. It affects
- * all up to and including B1.
- */
- if (c->x86_model <= 1 && c->x86_stepping <= 1)
+
+ /* Fix erratum 1076: CPB feature bit not being set in CPUID. */
+ if (!cpu_has(c, X86_FEATURE_CPB))
set_cpu_cap(c, X86_FEATURE_CPB);
}
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 01874d54f4fd9..2da82eff0eb4f 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -798,15 +798,25 @@ static int ssb_prctl_set(struct task_struct *task, unsigned long ctrl)
if (task_spec_ssb_force_disable(task))
return -EPERM;
task_clear_spec_ssb_disable(task);
+ task_clear_spec_ssb_noexec(task);
task_update_spec_tif(task);
break;
case PR_SPEC_DISABLE:
task_set_spec_ssb_disable(task);
+ task_clear_spec_ssb_noexec(task);
task_update_spec_tif(task);
break;
case PR_SPEC_FORCE_DISABLE:
task_set_spec_ssb_disable(task);
task_set_spec_ssb_force_disable(task);
+ task_clear_spec_ssb_noexec(task);
+ task_update_spec_tif(task);
+ break;
+ case PR_SPEC_DISABLE_NOEXEC:
+ if (task_spec_ssb_force_disable(task))
+ return -EPERM;
+ task_set_spec_ssb_disable(task);
+ task_set_spec_ssb_noexec(task);
task_update_spec_tif(task);
break;
default:
@@ -885,6 +895,8 @@ static int ssb_prctl_get(struct task_struct *task)
case SPEC_STORE_BYPASS_PRCTL:
if (task_spec_ssb_force_disable(task))
return PR_SPEC_PRCTL | PR_SPEC_FORCE_DISABLE;
+ if (task_spec_ssb_noexec(task))
+ return PR_SPEC_PRCTL | PR_SPEC_DISABLE_NOEXEC;
if (task_spec_ssb_disable(task))
return PR_SPEC_PRCTL | PR_SPEC_DISABLE;
return PR_SPEC_PRCTL | PR_SPEC_ENABLE;
diff --git a/arch/x86/kernel/cpu/cacheinfo.c b/arch/x86/kernel/cpu/cacheinfo.c
index c4d1023fb0abc..395d46f78582b 100644
--- a/arch/x86/kernel/cpu/cacheinfo.c
+++ b/arch/x86/kernel/cpu/cacheinfo.c
@@ -248,6 +248,7 @@ amd_cpuid4(int leaf, union _cpuid4_leaf_eax *eax,
switch (leaf) {
case 1:
l1 = &l1i;
+ /* fall through */
case 0:
if (!l1->val)
return;
diff --git a/arch/x86/kernel/cpu/match.c b/arch/x86/kernel/cpu/match.c
index 3fed38812eea3..6dd78d8235e44 100644
--- a/arch/x86/kernel/cpu/match.c
+++ b/arch/x86/kernel/cpu/match.c
@@ -48,3 +48,34 @@ const struct x86_cpu_id *x86_match_cpu(const struct x86_cpu_id *match)
return NULL;
}
EXPORT_SYMBOL(x86_match_cpu);
+
+static const struct x86_cpu_desc *
+x86_match_cpu_with_stepping(const struct x86_cpu_desc *match)
+{
+ struct cpuinfo_x86 *c = &boot_cpu_data;
+ const struct x86_cpu_desc *m;
+
+ for (m = match; m->x86_family | m->x86_model; m++) {
+ if (c->x86_vendor != m->x86_vendor)
+ continue;
+ if (c->x86 != m->x86_family)
+ continue;
+ if (c->x86_model != m->x86_model)
+ continue;
+ if (c->x86_stepping != m->x86_stepping)
+ continue;
+ return m;
+ }
+ return NULL;
+}
+
+bool x86_cpu_has_min_microcode_rev(const struct x86_cpu_desc *table)
+{
+ const struct x86_cpu_desc *res = x86_match_cpu_with_stepping(table);
+
+ if (!res || res->x86_microcode_rev > boot_cpu_data.microcode)
+ return false;
+
+ return true;
+}
+EXPORT_SYMBOL_GPL(x86_cpu_has_min_microcode_rev);
diff --git a/arch/x86/kernel/cpu/mtrr/cleanup.c b/arch/x86/kernel/cpu/mtrr/cleanup.c
index 3668c5df90c69..5bd011737272d 100644
--- a/arch/x86/kernel/cpu/mtrr/cleanup.c
+++ b/arch/x86/kernel/cpu/mtrr/cleanup.c
@@ -296,7 +296,7 @@ range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek,
unsigned long sizek)
{
unsigned long hole_basek, hole_sizek;
- unsigned long second_basek, second_sizek;
+ unsigned long second_sizek;
unsigned long range0_basek, range0_sizek;
unsigned long range_basek, range_sizek;
unsigned long chunk_sizek;
@@ -304,7 +304,6 @@ range_to_mtrr_with_hole(struct var_mtrr_state *state, unsigned long basek,
hole_basek = 0;
hole_sizek = 0;
- second_basek = 0;
second_sizek = 0;
chunk_sizek = state->chunk_sizek;
gran_sizek = state->gran_sizek;
diff --git a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
index 14bed6af83773..604c0e3bcc830 100644
--- a/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
+++ b/arch/x86/kernel/cpu/resctrl/pseudo_lock.c
@@ -34,13 +34,6 @@
#include "pseudo_lock_event.h"
/*
- * MSR_MISC_FEATURE_CONTROL register enables the modification of hardware
- * prefetcher state. Details about this register can be found in the MSR
- * tables for specific platforms found in Intel's SDM.
- */
-#define MSR_MISC_FEATURE_CONTROL 0x000001a4
-
-/*
* The bits needed to disable hardware prefetching varies based on the
* platform. During initialization we will discover which bits to use.
*/
diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 50895c2f937d1..a687d10da4178 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -671,21 +671,18 @@ __init void e820__reallocate_tables(void)
int size;
size = offsetof(struct e820_table, entries) + sizeof(struct e820_entry)*e820_table->nr_entries;
- n = kmalloc(size, GFP_KERNEL);
+ n = kmemdup(e820_table, size, GFP_KERNEL);
BUG_ON(!n);
- memcpy(n, e820_table, size);
e820_table = n;
size = offsetof(struct e820_table, entries) + sizeof(struct e820_entry)*e820_table_kexec->nr_entries;
- n = kmalloc(size, GFP_KERNEL);
+ n = kmemdup(e820_table_kexec, size, GFP_KERNEL);
BUG_ON(!n);
- memcpy(n, e820_table_kexec, size);
e820_table_kexec = n;
size = offsetof(struct e820_table, entries) + sizeof(struct e820_entry)*e820_table_firmware->nr_entries;
- n = kmalloc(size, GFP_KERNEL);
+ n = kmemdup(e820_table_firmware, size, GFP_KERNEL);
BUG_ON(!n);
- memcpy(n, e820_table_firmware, size);
e820_table_firmware = n;
}
diff --git a/arch/x86/kernel/early_printk.c b/arch/x86/kernel/early_printk.c
index 374a52fa52969..9b33904251a9f 100644
--- a/arch/x86/kernel/early_printk.c
+++ b/arch/x86/kernel/early_printk.c
@@ -388,10 +388,6 @@ static int __init setup_early_printk(char *buf)
if (!strncmp(buf, "xen", 3))
early_console_register(&xenboot_console, keep);
#endif
-#ifdef CONFIG_EARLY_PRINTK_EFI
- if (!strncmp(buf, "efi", 3))
- early_console_register(&early_efi_console, keep);
-#endif
#ifdef CONFIG_EARLY_PRINTK_USB_XDBC
if (!strncmp(buf, "xdbc", 4))
early_xdbc_parse_parameter(buf + 4);
diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
index 9cc108456d0be..d7432c2b10514 100644
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -669,7 +669,7 @@ static bool is_supported_xstate_size(unsigned int test_xstate_size)
return false;
}
-static int init_xstate_size(void)
+static int __init init_xstate_size(void)
{
/* Recompute the context size for enabled features: */
unsigned int possible_xstate_size;
diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c
index 8257a59704ae9..3e3789c8f8e1a 100644
--- a/arch/x86/kernel/ftrace.c
+++ b/arch/x86/kernel/ftrace.c
@@ -269,7 +269,7 @@ int ftrace_update_ftrace_func(ftrace_func_t func)
return ret;
}
-static int is_ftrace_caller(unsigned long ip)
+static nokprobe_inline int is_ftrace_caller(unsigned long ip)
{
if (ip == ftrace_update_func)
return 1;
@@ -299,6 +299,7 @@ int ftrace_int3_handler(struct pt_regs *regs)
return 1;
}
+NOKPROBE_SYMBOL(ftrace_int3_handler);
static int ftrace_write(unsigned long ip, const char *val, int size)
{
diff --git a/arch/x86/kernel/hw_breakpoint.c b/arch/x86/kernel/hw_breakpoint.c
index 34a5c17151487..ff9bfd40429ef 100644
--- a/arch/x86/kernel/hw_breakpoint.c
+++ b/arch/x86/kernel/hw_breakpoint.c
@@ -261,12 +261,8 @@ static int arch_build_bp_info(struct perf_event *bp,
* allow kernel breakpoints at all.
*/
if (attr->bp_addr >= TASK_SIZE_MAX) {
-#ifdef CONFIG_KPROBES
if (within_kprobe_blacklist(attr->bp_addr))
return -EINVAL;
-#else
- return -EINVAL;
-#endif
}
hw->type = X86_BREAKPOINT_EXECUTE;
@@ -279,6 +275,7 @@ static int arch_build_bp_info(struct perf_event *bp,
hw->len = X86_BREAKPOINT_LEN_X;
return 0;
}
+ /* fall through */
default:
return -EINVAL;
}
diff --git a/arch/x86/kernel/kexec-bzimage64.c b/arch/x86/kernel/kexec-bzimage64.c
index 53917a3ebf949..1f3b77367948d 100644
--- a/arch/x86/kernel/kexec-bzimage64.c
+++ b/arch/x86/kernel/kexec-bzimage64.c
@@ -218,6 +218,9 @@ setup_boot_parameters(struct kimage *image, struct boot_params *params,
params->screen_info.ext_mem_k = 0;
params->alt_mem_k = 0;
+ /* Always fill in RSDP: it is either 0 or a valid value */
+ params->acpi_rsdp_addr = boot_params.acpi_rsdp_addr;
+
/* Default APM info */
memset(&params->apm_bios_info, 0, sizeof(params->apm_bios_info));
@@ -256,7 +259,6 @@ setup_boot_parameters(struct kimage *image, struct boot_params *params,
setup_efi_state(params, params_load_addr, efi_map_offset, efi_map_sz,
efi_setup_data_offset);
#endif
-
/* Setup EDD info */
memcpy(params->eddbuf, boot_params.eddbuf,
EDDMAXNR * sizeof(struct edd_info));
diff --git a/arch/x86/kernel/kgdb.c b/arch/x86/kernel/kgdb.c
index 5db08425063ed..4ff6b4cdb9419 100644
--- a/arch/x86/kernel/kgdb.c
+++ b/arch/x86/kernel/kgdb.c
@@ -467,6 +467,7 @@ int kgdb_arch_handle_exception(int e_vector, int signo, int err_code,
ptr = &remcomInBuffer[1];
if (kgdb_hex2long(&ptr, &addr))
linux_regs->ip = addr;
+ /* fall through */
case 'D':
case 'k':
/* clear the trace bit */
diff --git a/arch/x86/kernel/kprobes/core.c b/arch/x86/kernel/kprobes/core.c
index 4ba75afba5271..a034cb808e7eb 100644
--- a/arch/x86/kernel/kprobes/core.c
+++ b/arch/x86/kernel/kprobes/core.c
@@ -1028,6 +1028,13 @@ NOKPROBE_SYMBOL(kprobe_fault_handler);
int __init arch_populate_kprobe_blacklist(void)
{
+ int ret;
+
+ ret = kprobe_add_area_blacklist((unsigned long)__irqentry_text_start,
+ (unsigned long)__irqentry_text_end);
+ if (ret)
+ return ret;
+
return kprobe_add_area_blacklist((unsigned long)__entry_text_start,
(unsigned long)__entry_text_end);
}
diff --git a/arch/x86/kernel/kprobes/opt.c b/arch/x86/kernel/kprobes/opt.c
index 6adf6e6c29339..f142629520158 100644
--- a/arch/x86/kernel/kprobes/opt.c
+++ b/arch/x86/kernel/kprobes/opt.c
@@ -97,6 +97,7 @@ static void synthesize_set_arg1(kprobe_opcode_t *addr, unsigned long val)
}
asm (
+ ".pushsection .rodata\n"
"optprobe_template_func:\n"
".global optprobe_template_entry\n"
"optprobe_template_entry:\n"
@@ -136,8 +137,7 @@ asm (
#endif
".global optprobe_template_end\n"
"optprobe_template_end:\n"
- ".type optprobe_template_func, @function\n"
- ".size optprobe_template_func, .-optprobe_template_func\n");
+ ".popsection\n");
void optprobe_template_func(void);
STACK_FRAME_NON_STANDARD(optprobe_template_func);
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index 90ae0ca510837..58ac7be52c7a6 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -255,6 +255,18 @@ void arch_setup_new_exec(void)
/* If cpuid was previously disabled for this task, re-enable it. */
if (test_thread_flag(TIF_NOCPUID))
enable_cpuid();
+
+ /*
+ * Don't inherit TIF_SSBD across exec boundary when
+ * PR_SPEC_DISABLE_NOEXEC is used.
+ */
+ if (test_thread_flag(TIF_SSBD) &&
+ task_spec_ssb_noexec(current)) {
+ clear_thread_flag(TIF_SSBD);
+ task_clear_spec_ssb_disable(current);
+ task_clear_spec_ssb_noexec(current);
+ speculation_ctrl_update(task_thread_info(current)->flags);
+ }
}
static inline void switch_to_bitmap(struct thread_struct *prev,
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index e8796fcd7e5a5..13af08827eefc 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -171,7 +171,7 @@ void __init setup_per_cpu_areas(void)
unsigned long delta;
int rc;
- pr_info("NR_CPUS:%d nr_cpumask_bits:%d nr_cpu_ids:%u nr_node_ids:%d\n",
+ pr_info("NR_CPUS:%d nr_cpumask_bits:%d nr_cpu_ids:%u nr_node_ids:%u\n",
NR_CPUS, nr_cpumask_bits, nr_cpu_ids, nr_node_ids);
/*
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index ccd1f2a8e5577..ce1a67b70168e 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -56,6 +56,7 @@
#include <linux/stackprotector.h>
#include <linux/gfp.h>
#include <linux/cpuidle.h>
+#include <linux/numa.h>
#include <asm/acpi.h>
#include <asm/desc.h>
@@ -149,7 +150,7 @@ static inline void smpboot_restore_warm_reset_vector(void)
*/
static void smp_callin(void)
{
- int cpuid, phys_id;
+ int cpuid;
/*
* If waken up by an INIT in an 82489DX configuration
@@ -160,11 +161,6 @@ static void smp_callin(void)
cpuid = smp_processor_id();
/*
- * (This works even if the APIC is not enabled.)
- */
- phys_id = read_apic_id();
-
- /*
* the boot CPU has finished the init stage and is spinning
* on callin_map until we finish. We are free to set up this
* CPU, first the APIC. (this is probably redundant on most
@@ -841,7 +837,7 @@ wakeup_secondary_cpu_via_init(int phys_apicid, unsigned long start_eip)
/* reduce the number of lines printed when booting a large cpu count system */
static void announce_cpu(int cpu, int apicid)
{
- static int current_node = -1;
+ static int current_node = NUMA_NO_NODE;
int node = early_cpu_to_node(cpu);
static int width, node_width;
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index 2684a9d11e661..d26f9e9c3d830 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -111,6 +111,7 @@ void ist_enter(struct pt_regs *regs)
/* This code is a bit fragile. Test it. */
RCU_LOCKDEP_WARN(!rcu_is_watching(), "ist_enter didn't work");
}
+NOKPROBE_SYMBOL(ist_enter);
void ist_exit(struct pt_regs *regs)
{
diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c
index 843feb94a9501..ccf03416e4342 100644
--- a/arch/x86/kernel/uprobes.c
+++ b/arch/x86/kernel/uprobes.c
@@ -745,6 +745,7 @@ static int branch_setup_xol_ops(struct arch_uprobe *auprobe, struct insn *insn)
* OPCODE1() of the "short" jmp which checks the same condition.
*/
opc1 = OPCODE2(insn) - 0x10;
+ /* fall through */
default:
if (!is_cond_jmp_opcode(opc1))
return -ENOSYS;
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 0d618ee634ac4..bad8c51fee6ee 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -31,7 +31,7 @@
#undef i386 /* in case the preprocessor is a 32bit one */
-OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT, CONFIG_OUTPUT_FORMAT)
+OUTPUT_FORMAT(CONFIG_OUTPUT_FORMAT)
#ifdef CONFIG_X86_32
OUTPUT_ARCH(i386)
@@ -401,7 +401,7 @@ SECTIONS
* Per-cpu symbols which need to be offset from __per_cpu_load
* for the boot processor.
*/
-#define INIT_PER_CPU(x) init_per_cpu__##x = x + __per_cpu_load
+#define INIT_PER_CPU(x) init_per_cpu__##x = ABSOLUTE(x) + __per_cpu_load
INIT_PER_CPU(gdt_page);
INIT_PER_CPU(irq_stack_union);