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linux-6.14.y
linux/arch/x86/kernel
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Peter Zijlstra 3971faa48e x86/boot: Mark start_secondary() with __noendbr 
[ Upstream commit 93f16a1ab7 ]

The handoff between the boot stubs and start_secondary() are before IBT is
enabled and is definitely not subject to kCFI. As such, suppress all that for
this function.

Notably when the ENDBR poison would become fatal (ud1 instead of nop) this will
trigger a tripple fault because we haven't set up the IDT to handle #UD yet.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Link: https://lore.kernel.org/r/20250207122546.509520369@infradead.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-05-29 11:13:23 +02:00
..
acpi
x86/acpi: Don't limit CPUs to 1 for Xen PV guests due to disabled ACPI
2025-04-20 10:22:17 +02:00
apic
Merge tag 'mm-stable-2025-01-26-14-59' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2025-01-26 18:36:23 -08:00
cpu
x86/bugs: Make spectre user default depend on MITIGATION_SPECTRE_V2
2025-05-29 11:13:01 +02:00
fpu
x86/fpu/xstate: Fix inconsistencies in guest FPU xfeatures
2025-04-10 14:43:59 +02:00
kprobes
x86/kprobes: Cleanup kprobes on ftrace code
2024-11-07 01:16:59 +09:00
.gitignore
…
alternative.c
x86/ibt: Handle FineIBT in handle_cfi_failure()
2025-05-29 11:13:23 +02:00
amd_gart_64.c
change alloc_pages name in dma_map_ops to avoid name conflicts
2024-04-25 20:55:53 -07:00
amd_nb.c
x86/amd_node, platform/x86/amd/hsmp: Have HSMP use SMN through AMD_NODE
2025-05-22 14:31:39 +02:00
amd_node.c
x86/amd_node: Add SMN offsets to exclusive region access
2025-05-29 11:12:34 +02:00
aperture_64.c
x86/pci: Use PCI_HEADER_TYPE_* instead of literals
2023-12-01 15:00:43 -06:00
apm_32.c
x86/apm_32: Remove dead function apm_get_battery_status()
2024-02-21 19:38:03 +01:00
asm-offsets_32.c
…
asm-offsets_64.c
x86: Fixup asm-offsets duplicate
2022-10-17 16:41:06 +02:00
asm-offsets.c
x86/bugs: Rename CONFIG_CALL_DEPTH_TRACKING => CONFIG_MITIGATION_CALL_DEPTH_TRACKING
2024-01-10 10:52:28 +01:00
audit_64.c
x86/audit: Fix -Wmissing-variable-declarations warning for ia32_xyz_class
2023-08-30 10:11:16 +02:00
bootflag.c
…
callthunks.c
Merge tag 'x86-boot-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-01-24 05:54:26 -08:00
cet.c
x86/fred: Clear WFE in missing-ENDBRANCH #CPs
2024-12-29 10:18:10 +01:00
cfi.c
x86/ibt: Handle FineIBT in handle_cfi_failure()
2025-05-29 11:13:23 +02:00
check.c
…
cpuid.c
x86/cpuid: make cpuid_class a static const structure
2023-08-05 08:31:41 +02:00
crash_dump_32.c
…
crash_dump_64.c
use less confusing names for iov_iter direction initializers
2022-11-25 13:01:55 -05:00
crash.c
x86/mm: Add callbacks to prepare encrypted memory for kexec
2024-06-17 17:46:02 +02:00
devicetree.c
x86/of: Don't use DTB for SMP setup if ACPI is enabled
2025-02-25 22:13:02 +01:00
doublefault_32.c
x86: Avoid missing-prototype warnings for doublefault code
2023-05-18 11:56:18 -07:00
dumpstack_32.c
x86/percpu: Move irq_stack variables next to current_task
2022-10-17 16:41:05 +02:00
dumpstack_64.c
x86/percpu: Move irq_stack variables next to current_task
2022-10-17 16:41:05 +02:00
dumpstack.c
x86/dumpstack: Fix inaccurate unwinding from exception stacks due to misplaced assignment
2025-04-10 14:44:26 +02:00
e820.c
x86/e820: Fix handling of subpage regions when calculating nosave ranges in e820__register_nosave_regions()
2025-04-20 10:23:21 +02:00
early_printk.c
x86/earlyprintk: Clean up pciserial
2022-08-29 12:19:25 +02:00
early-quirks.c
drm/intel/pciids: rename i915_pciids.h to just pciids.h
2024-10-29 16:14:04 +02:00
ebda.c
…
eisa.c
x86/EISA: Dereference memory directly instead of using readl()
2024-08-29 15:57:09 +02:00
espfix_64.c
x86/fred: No ESPFIX needed when FRED is enabled
2024-01-31 22:01:51 +01:00
fred.c
x86/fred: Fix the FRED RSP0 MSR out of sync with its per-CPU cache
2025-01-14 14:16:36 -08:00
ftrace_32.S
fgraph: Replace fgraph_ret_regs with ftrace_regs
2024-12-26 10:50:02 -05:00
ftrace_64.S
fgraph: Replace fgraph_ret_regs with ftrace_regs
2024-12-26 10:50:02 -05:00
ftrace.c
x86/its: Add support for ITS-safe return thunk
2025-05-18 08:26:09 +02:00
head32.c
x86/microcode: Consolidate the loader enablement checking
2025-05-18 08:26:05 +02:00
head64.c
tracing: Disable branch profiling in noinstr code
2025-04-20 10:22:25 +02:00
head_32.S
Merge tag 'x86-cleanups-2024-05-13' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2024-05-13 18:21:24 -07:00
head_64.S
x86/boot/64: Determine VA/PA offset before entering C code
2024-12-05 13:18:54 +01:00
hpet.c
Merge tag 'rtc-6.14' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
2025-01-30 17:50:02 -08:00
hw_breakpoint.c
x86/amd: Cache debug register values in percpu variables
2023-01-31 20:09:26 +01:00
i8237.c
…
i8253.c
x86/i8253: Call clockevent_i8253_disable() with interrupts disabled
2025-05-02 08:02:10 +02:00
i8259.c
x86/i8259: Skip probing when ACPI/MADT advertises PCAT compatibility
2023-10-27 20:36:49 +02:00
ibt_selftest.S
x86/ibt: Convert IBT selftest to asm
2023-08-17 17:07:09 +02:00
idt.c
x86/irq: Install posted MSI notification handler
2024-04-30 00:54:42 +02:00
io_delay.c
…
ioport.c
…
irq_32.c
x86/percpu: Move irq_stack variables next to current_task
2022-10-17 16:41:05 +02:00
irq_64.c
fix missing vmalloc.h includes
2024-04-25 20:55:49 -07:00
irq_work.c
x86/apic: Wrap IPI calls into helper functions
2023-08-09 12:00:55 -07:00
irq.c
x86/irq: Define trace events conditionally
2025-02-25 22:44:35 +01:00
irqflags.S
x86/headers: Replace #include <asm/export.h> with #include <linux/export.h>
2023-10-03 10:38:07 +02:00
irqinit.c
x86/fred: Invoke FRED initialization code to enable FRED
2024-01-31 22:03:36 +01:00
itmt.c
x86/itmt: Move the "sched_itmt_enabled" sysctl to debugfs
2025-01-13 14:10:24 +01:00
jailhouse.c
xen: allow mapping ACPI data using a different physical address
2024-09-12 08:25:07 +02:00
jump_label.c
…
kdebugfs.c
…
kexec-bzimage64.c
Merge tag 'mm-stable-2024-03-13-20-04' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2024-03-14 17:43:30 -07:00
kgdb.c
x86/kgdb: Fix a kerneldoc warning when build with W=1
2023-09-24 11:00:13 +02:00
ksysfs.c
x86/sysfs: Constify 'struct bin_attribute'
2024-12-06 11:06:14 +01:00
kvm.c
x86/mtrr: Rename mtrr_overwrite_state() to guest_force_mtrr_state()
2024-12-06 20:06:52 +01:00
kvmclock.c
kvmclock: Unexport kvmclock clocksource
2024-02-07 17:05:21 +01:00
ldt.c
x86/bugs: Rename CONFIG_PAGE_TABLE_ISOLATION => CONFIG_MITIGATION_PAGE_TABLE_ISOLATION
2024-01-10 10:52:28 +01:00
machine_kexec_32.c
x86/mm: Fix _pgd_alloc() for Xen PV mode
2025-05-02 08:01:48 +02:00
machine_kexec_64.c
x86/kexec: Use typedef for relocate_kernel_fn function prototype
2025-01-14 13:09:08 +01:00
Makefile
x86: Start moving AMD node functionality out of AMD_NB
2025-01-08 10:47:36 +01:00
mmconf-fam10h_64.c
xen: allow mapping ACPI data using a different physical address
2024-09-12 08:25:07 +02:00
module.c
x86/its: Use dynamic thunks for indirect branches
2025-05-18 08:26:09 +02:00
mpparse.c
x86/mpparse: Cleanup apic_printk()s
2024-08-07 18:13:28 +02:00
msr.c
x86/MSR: make msr_class a static const structure
2023-08-05 08:31:42 +02:00
nmi_selftest.c
x86/apic: Wrap IPI calls into helper functions
2023-08-09 12:00:55 -07:00
nmi.c
x86/nmi: Add an emergency handler in nmi_desc & use it in nmi_shootdown_cpus()
2025-05-29 11:13:07 +02:00
paravirt-spinlocks.c
…
paravirt.c
x86/mm: Make MMU_GATHER_RCU_TABLE_FREE unconditional
2025-05-29 11:13:11 +02:00
pci-dma.c
Documentation: Merge x86-specific boot options doc into kernel-parameters.txt
2024-12-10 18:25:40 +01:00
pcspeaker.c
…
perf_regs.c
…
platform-quirks.c
x86/quirks: Include linux/pnp.h for arch_pnpbios_disabled()
2023-05-18 11:56:18 -07:00
pmem.c
…
probe_roms.c
x86/sev: Skip ROM range scans and validation for SEV-SNP guests
2024-03-26 15:22:35 +01:00
process_32.c
x86/fpu: Clean up FPU switching in the middle of task switching
2023-10-20 11:24:22 +02:00
process_64.c
x86/mm: Cleanup prctl_enable_tagged_addr() nr_bits error checking
2024-07-02 11:33:44 -07:00
process.c
x86/tdx: Fix arch_safe_halt() execution for TDX VMs
2025-04-10 14:44:44 +02:00
process.h
…
ptrace.c
x86: Add PTRACE interface for shadow stack
2023-08-02 15:01:51 -07:00
pvclock.c
locking/atomic: treewide: use raw_atomic*_<op>()
2023-06-05 09:57:20 +02:00
quirks.c
…
reboot_fixups_32.c
…
reboot.c
x86/nmi: Add an emergency handler in nmi_desc & use it in nmi_shootdown_cpus()
2025-05-29 11:13:07 +02:00
relocate_kernel_32.S
x86/kexec: Disable RET on kexec
2022-07-09 13:12:32 +02:00
relocate_kernel_64.S
Merge tag 'x86-boot-2025-01-21' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2025-01-24 05:54:26 -08:00
resource.c
x86/PCI: Tidy E820 removal messages
2022-12-10 10:33:11 -06:00
rethook.c
…
rtc.c
x86/rtc: Remove unused intel-mid.h
2024-04-03 08:24:48 -07:00
setup_percpu.c
x86/asm: Add DB flag to 32-bit percpu GDT entry
2023-12-20 10:57:51 +01:00
setup.c
mm/early_ioremap: add null pointer checks to prevent NULL-pointer dereference
2025-01-13 22:40:59 -08:00
sev_verify_cbit.S
x86/boot: Use 32-bit XOR to clear registers
2024-03-01 12:47:37 +01:00
shstk.c
uprobe: Add uretprobe syscall to speed up return probe
2024-06-12 08:44:28 +09:00
signal_32.c
x86/ia32: Leave NULL selector values 0~3 unchanged
2025-04-20 10:22:23 +02:00
signal_64.c
x86/pkeys: Restore altstack access in sigreturn()
2024-08-02 14:12:21 +02:00
signal.c
x86/pkeys: Update PKRU to enable all pkeys before XSAVE
2024-08-02 14:12:21 +02:00
smp.c
Merge tag 'mm-stable-2024-03-13-20-04' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
2024-03-14 17:43:30 -07:00
smpboot.c
x86/boot: Mark start_secondary() with __noendbr
2025-05-29 11:13:23 +02:00
stacktrace.c
…
static_call.c
x86/its: Add support for ITS-safe return thunk
2025-05-18 08:26:09 +02:00
step.c
x86/msr: Prepare for including <linux/percpu.h> into <asm/msr.h>
2024-03-04 12:01:39 +01:00
sys_ia32.c
…
sys_x86_64.c
arch/x86: teach arch_get_unmapped_area_vmflags to handle hugetlb mappings
2024-11-06 20:11:10 -08:00
tboot.c
mm: remove rb tree.
2022-09-26 19:46:16 -07:00
time.c
x86: stop playing stack games in profile_pc()
2024-06-28 14:27:22 -07:00
tls.c
x86/gsseg: Move load_gs_index() to its own new header file
2023-01-12 13:06:36 +01:00
tls.h
…
trace_clock.c
…
trace.c
…
tracepoint.c
…
traps.c
x86/traps: Cleanup and robustify decode_bug()
2025-05-29 11:13:23 +02:00
tsc_msr.c
x86/tsc_msr: Switch to new Intel CPU model defines
2024-04-29 10:31:34 +02:00
tsc_sync.c
x86/tsc: Trust initial offset in architectural TSC-adjust MSRs
2024-04-29 23:27:16 +02:00
tsc.c
x86/tsc: Always save/restore TSC sched_clock() on suspend/resume
2025-04-10 14:44:45 +02:00
umip.c
…
unwind_frame.c
x86: kmsan: don't instrument stack walking functions
2022-10-03 14:03:25 -07:00
unwind_guess.c
…
unwind_orc.c
x86/unwind/orc: Fix unwind for newly forked tasks
2024-10-17 15:13:07 -07:00
uprobes.c
uprobes/x86: Harden uretprobe syscall trampoline check
2025-04-10 14:44:44 +02:00
verify_cpu.S
…
vm86_32.c
arch: remove get_task_comm() and print task comm directly
2025-01-12 20:21:15 -08:00
vmcore_info_32.c
crash: split vmcoreinfo exporting code out from crash_core.c
2024-02-23 17:48:22 -08:00
vmcore_info_64.c
crash: split vmcoreinfo exporting code out from crash_core.c
2024-02-23 17:48:22 -08:00
vmlinux.lds.S
x86/its: Add support for ITS-safe return thunk
2025-05-18 08:26:09 +02:00
vsmp_64.c
x86/apic: Remove unused phys_pkg_id() callback
2024-02-15 22:07:38 +01:00
x86_init.c
xen: allow mapping ACPI data using a different physical address
2024-09-12 08:25:07 +02:00