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msm-4.14/arch/x86/kernel
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Kim Phillips 909ca3e7e6 x86/cpu: Enable STIBP on AMD if Automatic IBRS is enabled 
commit fd470a8beed88440b160d690344fbae05a0b9b1b upstream.

Unlike Intel's Enhanced IBRS feature, AMD's Automatic IBRS does not
provide protection to processes running at CPL3/user mode, see section
"Extended Feature Enable Register (EFER)" in the APM v2 at
https://bugzilla.kernel.org/attachment.cgi?id=304652

Explicitly enable STIBP to protect against cross-thread CPL3
branch target injections on systems with Automatic IBRS enabled.

Also update the relevant documentation.

Fixes: e7862eda309e ("x86/cpu: Support AMD Automatic IBRS")
Reported-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230720194727.67022-1-kim.phillips@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit bb8cc9c34361714dd232700b3d5f1373055de610)
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
2024-05-30 09:00:42 +00:00
..
acpi
x86/i8259: Skip probing when ACPI/MADT advertises PCAT compatibility
2023-11-08 11:21:07 +01:00
apic
x86/apic: Fix kernel panic when booting with intremap=off and x2apic_phys
2023-06-28 10:14:21 +02:00
cpu
x86/cpu: Enable STIBP on AMD if Automatic IBRS is enabled
2024-05-30 09:00:42 +00:00
fpu
x86/fpu: Set X86_FEATURE_OSXSAVE feature after enabling OSXSAVE in CR4
2023-08-30 16:35:15 +02:00
kprobes
x86/kprobes: Fix arch_check_optimized_kprobe check within optimized_kprobe range
2023-03-11 16:26:46 +01:00
.gitignore
…
alternative.c
Revert "x86/alternative: Print unadorned pointers"
2018-02-13 10:19:49 +01:00
amd_gart_64.c
x86: remove arch specific dma_supported implementation
2017-06-28 06:54:46 -07:00
amd_nb.c
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2018-02-22 15:42:24 +01:00
apb_timer.c
…
aperture_64.c
x86/gart: Exclude GART aperture from vmcore
2018-04-12 12:32:20 +02:00
apm_32.c
x86/APM: drop the duplicate APM_MINOR_DEV macro
2023-09-23 10:46:58 +02:00
asm-offsets_32.c
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2018-02-22 15:42:24 +01:00
asm-offsets_64.c
x86/entry/64: Separate cpu_current_top_of_stack from TSS.sp0
2017-12-25 14:26:23 +01:00
asm-offsets.c
x86/mm: Use/Fix PCID to optimize user/kernel switches
2018-01-02 20:31:01 +01:00
audit_64.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
bootflag.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
check.c
x86/corruption-check: Fix panic in memory_corruption_check() when boot option without value is provided
2018-11-13 11:14:47 -08:00
cpuid.c
…
crash_dump_32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
crash_dump_64.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
crash.c
x86/crash: Disable virt in core NMI crash handler to avoid double shootdown
2023-03-11 16:26:45 +01:00
devicetree.c
x86/devicetree: Fix device IRQ settings in DT
2018-05-30 07:52:35 +02:00
doublefault.c
x86/entry: Fix assumptions that the HW TSS is at the beginning of cpu_tss
2017-12-25 14:26:22 +01:00
dumpstack_32.c
x86/entry: Rename SYSENTER_stack to CPU_ENTRY_AREA_entry_stack
2017-12-29 17:53:44 +01:00
dumpstack_64.c
x86/entry: Rename SYSENTER_stack to CPU_ENTRY_AREA_entry_stack
2017-12-29 17:53:44 +01:00
dumpstack.c
x86/show_trace_log_lvl: Ensure stack pointer is aligned, again
2023-05-30 12:38:38 +01:00
e820.c
x86/boot/e820: Add support to determine the E820 type of an address
2017-07-18 11:38:01 +02:00
early_printk.c
x86/earlyprintk: Add a force option for pciserial device
2018-11-27 16:10:47 +01:00
early-quirks.c
x86/gpu: add CFL to early quirks
2018-02-22 15:42:18 +01:00
ebda.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
eisa.c
x86/EISA: Don't probe EISA bus for Xen PV guests
2018-09-26 08:38:08 +02:00
espfix_64.c
kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK
2018-02-22 15:42:23 +01:00
ftrace_32.S
x86/retpoline/ftrace: Convert ftrace assembler indirect jumps
2018-01-17 09:45:29 +01:00
ftrace_64.S
x86/retpoline/ftrace: Convert ftrace assembler indirect jumps
2018-01-17 09:45:29 +01:00
ftrace.c
ftrace/x86: Anotate text_mutex split between ftrace_arch_code_modify_post_process() and ftrace_arch_code_modify_prepare()
2020-04-02 16:34:28 +02:00
head32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
head64.c
x86: Clear .brk area at early boot
2022-07-21 20:42:47 +02:00
head_32.S
x86/cpu: Rename cpu_data.x86_mask to cpu_data.x86_stepping
2018-02-22 15:42:24 +01:00
head_64.S
x86/mm: Expand static page table for fixmap space
2018-10-03 17:00:54 -07:00
hpet.c
x86/hpet: Prevent potential NULL pointer dereference
2019-04-20 09:15:03 +02:00
hw_breakpoint.c
x86/hw_breakpoints: Make default case in hw_breakpoint_arch_parse() return an error
2019-04-20 09:15:03 +02:00
i8237.c
…
i8253.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
i8259.c
x86/i8259: Skip probing when ACPI/MADT advertises PCAT compatibility
2023-11-08 11:21:07 +01:00
idt.c
x86: Don't include linux/irq.h from asm/hardirq.h
2018-08-15 18:12:58 +02:00
io_delay.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
ioport.c
x86/entry/64: Make cpu_entry_area.tss read-only
2017-12-25 14:26:24 +01:00
irq_32.c
x86: Don't include linux/irq.h from asm/hardirq.h
2018-08-15 18:12:58 +02:00
irq_64.c
x86/irq/64: Limit IST stack overflow check to #DB stack
2019-05-31 06:47:26 -07:00
irq_work.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
irq.c
x86/irq: Ensure PI wakeup handler is unregistered before module unload
2021-11-26 11:40:21 +01:00
irqflags.S
x86/paravirt: Make native_save_fl() extern inline
2018-07-22 14:28:42 +02:00
irqinit.c
x86/i8259: Mark legacy PIC interrupts with IRQ_LEVEL
2023-02-06 07:46:32 +01:00
itmt.c
…
jump_label.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
kdebugfs.c
x86, mpparse, x86/acpi, x86/PCI, x86/dmi, SFI: Use memremap() for RAM mappings
2017-07-18 11:37:58 +02:00
kexec-bzimage64.c
x86/kexec: Use up-to-dated screen_info copy to fill boot params
2020-11-10 10:29:05 +01:00
kgdb.c
x86/kgbd: Use NMI_VECTOR not APIC_DM_NMI
2020-01-27 14:46:41 +01:00
ksysfs.c
x86/sysfs: Fix off-by-one error in loop termination
2017-09-25 09:36:16 +02:00
kvm.c
x86/paravirt: Fix callee-saved function ELF sizes
2019-08-06 19:05:24 +02:00
kvmclock.c
x86/pvclock: add setter for pvclock_pvti_cpu0_va
2019-01-31 08:13:47 +01:00
ldt.c
x86/ldt: Unmap PTEs for the slot before freeing LDT pages
2018-11-27 16:10:50 +01:00
livepatch.c
…
machine_kexec_32.c
x86/kexec: Avoid double free_page() upon do_kexec_load() failure
2018-05-25 16:17:35 +02:00
machine_kexec_64.c
x86/kexec: Avoid double free_page() upon do_kexec_load() failure
2018-05-25 16:17:35 +02:00
Makefile
x86/paravirt: Make native_save_fl() extern inline
2018-07-22 14:28:42 +02:00
mmconf-fam10h_64.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
module.c
x86/build: Treat R_386_PLT32 relocation as R_386_PC32
2021-03-07 11:27:44 +01:00
mpparse.c
x86/boot: Fix memory leak in default_get_smp_config()
2019-07-31 07:28:39 +02:00
msr.c
…
nmi_selftest.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
nmi.c
x86/speculation/mds: Clear CPU buffers on exit to user
2019-05-14 19:18:43 +02:00
paravirt_patch_32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
paravirt_patch_64.c
x86/paravirt: Dont patch flush_tlb_single
2017-12-25 14:26:24 +01:00
paravirt-spinlocks.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
paravirt.c
x86/paravirt: Fix some warning messages
2018-11-04 14:52:45 +01:00
pci-calgary_64.c
x86: remove arch specific dma_supported implementation
2017-06-28 06:54:46 -07:00
pci-dma.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pci-iommu_table.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pci-nommu.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pci-swiotlb.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pcspeaker.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
perf_regs.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
platform-quirks.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
pmem.c
x86/pmem: Fix platform-device leak in error path
2022-08-25 11:11:15 +02:00
probe_roms.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
process_32.c
sched/x86: Save [ER]FLAGS on context switch
2019-05-21 18:50:14 +02:00
process_64.c
sched/x86: Save [ER]FLAGS on context switch
2019-05-21 18:50:14 +02:00
process.c
x86/bugs: Make sure MSR_SPEC_CTRL is updated properly upon resume from S3
2022-12-08 11:16:32 +01:00
process.h
x86/speculation: Change misspelled STIPB to STIBP
2020-06-20 10:25:02 +02:00
ptrace.c
x86/fsgsbase/64: Fix NULL deref in 86_fsgsbase_read_task
2020-08-21 09:48:13 +02:00
pvclock.c
x86/pvclock: add setter for pvclock_pvti_cpu0_va
2019-01-31 08:13:47 +01:00
quirks.c
treewide: Remove uninitialized_var() usage
2023-08-11 11:33:32 +02:00
reboot_fixups_32.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
reboot.c
x86/reboot: Disable virtualization in an emergency if SVM is supported
2023-03-11 16:26:45 +01:00
relocate_kernel_32.S
…
relocate_kernel_64.S
x86/kexec: Make kexec (mostly) work in 5-level paging mode
2018-02-22 15:42:18 +01:00
resource.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
rtc.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
setup_percpu.c
x86/cpu_entry_area: Sync cpu_entry_area to initial_page_table
2018-03-08 22:41:07 -08:00
setup.c
ACPI: x86: Call acpi_boot_table_init() after acpi_table_upgrade()
2021-05-22 10:57:12 +02:00
signal_compat.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
signal.c
x86: Introduce TS_COMPAT_RESTART to fix get_nr_restart_syscall()
2021-03-24 11:05:05 +01:00
smp.c
x86/reboot: Disable SVM, not just VMX, when stopping CPUs
2023-03-11 16:26:45 +01:00
smpboot.c
x86/smp: Use dedicated cache-line for mwait_play_dead()
2023-08-11 11:33:32 +02:00
stacktrace.c
x86/stacktrace: Make zombie stack traces reliable
2018-03-03 10:24:25 +01:00
step.c
ptrace: Reimplement PTRACE_KILL by always sending SIGKILL
2022-06-14 16:53:43 +02:00
sys_x86_64.c
x86/mm: Cleanup the control_va_addr_alignment() __setup handler
2022-06-14 16:53:49 +02:00
sysfb_efi.c
efi: sysfb_efi: Add quirk for Lenovo Yoga Book X91F/L
2023-04-20 12:02:12 +02:00
sysfb_simplefb.c
x86/sysfb: Fix check for bad VRAM size
2020-02-28 16:35:58 +01:00
sysfb.c
…
tboot.c
x86/pti: Make unpoison of pgd for trusted boot work for real
2018-01-17 09:45:28 +01:00
tce_64.c
…
time.c
x86_64: Fix jiffies ODR violation
2020-06-20 10:25:00 +02:00
tls.c
x86/tls: Fix possible spectre-v1 in do_get_thread_area()
2019-07-21 09:04:31 +02:00
tls.h
…
topology.c
…
trace_clock.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tracepoint.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
traps.c
x86/speculation/mds: Revert CPU buffer clear on double fault exit
2019-05-21 18:50:13 +02:00
tsc_msr.c
x86/tsc: Add missing header to tsc_msr.c
2018-10-03 17:00:48 -07:00
tsc_sync.c
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tsc.c
x86/cpu: Sanitize FAM6_ATOM naming
2019-05-14 19:18:42 +02:00
unwind_frame.c
x86/unwind: Handle NULL pointer calls better in frame unwinder
2019-03-27 14:13:54 +09:00
unwind_guess.c
x86/unwind: Add the ORC unwinder
2017-07-26 13:18:20 +02:00
unwind_orc.c
x86/unwind/orc: Fix unreliable stack dump with gcov
2022-11-03 23:50:54 +09:00
uprobes.c
uprobes/x86: Allow to probe a NOP instruction with 0x66 prefix
2023-01-18 09:26:11 +01:00
verify_cpu.S
x86/boot: Annotate verify_cpu() as a callable function
2017-12-25 14:26:13 +01:00
vm86_32.c
x86/vm86/32: Fix POPF emulation
2018-03-21 12:06:41 +01:00
vmlinux.lds.S
x86: Fix .brk attribute in linker script
2023-11-08 11:21:08 +01:00
vsmp_64.c
…
x86_init.c
x86/virt, x86/platform: Merge 'struct x86_hyper' into 'struct x86_platform' and 'struct x86_init'
2017-12-25 14:26:20 +01:00