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Daniel Sneddon 509c2c9fe7 x86/speculation: Add RSB VM Exit protections 
commit 2b1299322016731d56807aa49254a5ea3080b6b3 upstream.

tl;dr: The Enhanced IBRS mitigation for Spectre v2 does not work as
documented for RET instructions after VM exits. Mitigate it with a new
one-entry RSB stuffing mechanism and a new LFENCE.

== Background ==

Indirect Branch Restricted Speculation (IBRS) was designed to help
mitigate Branch Target Injection and Speculative Store Bypass, i.e.
Spectre, attacks. IBRS prevents software run in less privileged modes
from affecting branch prediction in more privileged modes. IBRS requires
the MSR to be written on every privilege level change.

To overcome some of the performance issues of IBRS, Enhanced IBRS was
introduced.  eIBRS is an "always on" IBRS, in other words, just turn
it on once instead of writing the MSR on every privilege level change.
When eIBRS is enabled, more privileged modes should be protected from
less privileged modes, including protecting VMMs from guests.

== Problem ==

Here's a simplification of how guests are run on Linux' KVM:

void run_kvm_guest(void)
{
	// Prepare to run guest
	VMRESUME();
	// Clean up after guest runs
}

The execution flow for that would look something like this to the
processor:

1. Host-side: call run_kvm_guest()
2. Host-side: VMRESUME
3. Guest runs, does "CALL guest_function"
4. VM exit, host runs again
5. Host might make some "cleanup" function calls
6. Host-side: RET from run_kvm_guest()

Now, when back on the host, there are a couple of possible scenarios of
post-guest activity the host needs to do before executing host code:

* on pre-eIBRS hardware (legacy IBRS, or nothing at all), the RSB is not
touched and Linux has to do a 32-entry stuffing.

* on eIBRS hardware, VM exit with IBRS enabled, or restoring the host
IBRS=1 shortly after VM exit, has a documented side effect of flushing
the RSB except in this PBRSB situation where the software needs to stuff
the last RSB entry "by hand".

IOW, with eIBRS supported, host RET instructions should no longer be
influenced by guest behavior after the host retires a single CALL
instruction.

However, if the RET instructions are "unbalanced" with CALLs after a VM
exit as is the RET in #6, it might speculatively use the address for the
instruction after the CALL in #3 as an RSB prediction. This is a problem
since the (untrusted) guest controls this address.

Balanced CALL/RET instruction pairs such as in step #5 are not affected.

== Solution ==

The PBRSB issue affects a wide variety of Intel processors which
support eIBRS. But not all of them need mitigation. Today,
X86_FEATURE_RSB_VMEXIT triggers an RSB filling sequence that mitigates
PBRSB. Systems setting RSB_VMEXIT need no further mitigation - i.e.,
eIBRS systems which enable legacy IBRS explicitly.

However, such systems (X86_FEATURE_IBRS_ENHANCED) do not set RSB_VMEXIT
and most of them need a new mitigation.

Therefore, introduce a new feature flag X86_FEATURE_RSB_VMEXIT_LITE
which triggers a lighter-weight PBRSB mitigation versus RSB_VMEXIT.

The lighter-weight mitigation performs a CALL instruction which is
immediately followed by a speculative execution barrier (INT3). This
steers speculative execution to the barrier -- just like a retpoline
-- which ensures that speculation can never reach an unbalanced RET.
Then, ensure this CALL is retired before continuing execution with an
LFENCE.

In other words, the window of exposure is opened at VM exit where RET
behavior is troublesome. While the window is open, force RSB predictions
sampling for RET targets to a dead end at the INT3. Close the window
with the LFENCE.

There is a subset of eIBRS systems which are not vulnerable to PBRSB.
Add these systems to the cpu_vuln_whitelist[] as NO_EIBRS_PBRSB.
Future systems that aren't vulnerable will set ARCH_CAP_PBRSB_NO.

  [ bp: Massage, incorporate review comments from Andy Cooper. ]

Signed-off-by: Daniel Sneddon <daniel.sneddon@linux.intel.com>
Co-developed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-11 13:06:47 +02:00
..
crypto crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
e820 x86/efi: EFI soft reservation to E820 enumeration 2019-11-07 15:44:14 +01:00
fpu x86/fpu: Correct pkru/xstate inconsistency 2022-03-02 11:42:47 +01:00
numachip
trace x86/entry: Convert reschedule interrupt to IDTENTRY_SYSVEC_SIMPLE 2020-06-11 15:15:16 +02:00
uv x86/platform/uv: Drop last traces of uv_flush_tlb_others 2020-11-11 13:16:51 +01:00
vdso vdso/treewide: Add vdso_data pointer argument to __arch_get_hw_counter() 2020-08-06 10:57:30 +02:00
xen Revert "xen: fix p2m size in dom0 for disabled memory hotplug case" 2021-03-30 14:32:08 +02:00
acenv.h ACPICA: Avoid cache flush inside virtual machines 2022-06-09 10:20:50 +02:00
acpi.h ACPI: processor: Use CPUIDLE_FLAG_TLB_FLUSHED 2020-09-16 19:36:25 +02:00
agp.h mm: introduce include/linux/pgtable.h 2020-06-09 09:39:13 -07:00
alternative.h x86: Undo return-thunk damage 2022-07-25 11:26:36 +02:00
amd_nb.h x86/mce/amd: Cleanup threshold device remove path 2020-04-14 15:49:51 +02:00
apb_timer.h x86/apb_timer: Drop unused declaration and macro 2020-05-27 13:12:49 +02:00
apic.h x86/apic: Mark _all_ legacy interrupts when IO/APIC is missing 2021-06-10 13:39:27 +02:00
apicdef.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
apm.h x86/apm: Don't access __preempt_count with zeroed fs 2018-07-16 17:59:57 +02:00
arch_hweight.h x86/kconfig: Disable CONFIG_GENERIC_HWEIGHT and remove __HAVE_ARCH_SW_HWEIGHT 2019-05-13 11:07:33 +02:00
archrandom.h x86/cpu: Use RDRAND and RDSEED mnemonics in archrandom.h 2020-05-18 19:50:47 +02:00
asm-offsets.h
asm-prototypes.h x86/retpoline: Move the retpoline thunk declarations to nospec-branch.h 2022-07-25 11:26:25 +02:00
asm.h Orphan link sections were a long-standing source of obscure bugs, 2020-10-12 13:39:19 -07:00
atomic64_32.h locking/atomics: Flip fallbacks and instrumentation 2020-06-11 08:03:24 +02:00
atomic64_64.h locking/atomics: Flip fallbacks and instrumentation 2020-06-11 08:03:24 +02:00
atomic.h locking/atomic: Move ATOMIC_INIT into linux/types.h 2020-07-29 16:14:18 +02:00
audit.h x86/audit: Fix a -Wmissing-prototypes warning for ia32_classify_syscall() 2020-05-19 18:03:07 +02:00
barrier.h x86/apic: Add extra serialization for non-serializing MSRs 2021-02-10 09:29:22 +01:00
bios_ebda.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
bitops.h x86, kcsan: Remove __no_kcsan_or_inline usage 2020-06-15 14:10:08 +02:00
boot.h x86: Add support for ZSTD compressed kernel 2020-07-31 11:49:09 +02:00
bootparam_utils.h x86/boot: Preserve boot_params.secure_boot from sanitizing 2019-09-02 09:17:45 +02:00
bug.h compiler.h: Move instrumentation_begin()/end() to new <linux/instrumentation.h> header 2020-07-24 13:56:23 +02:00
bugs.h x86/mpx: remove MPX from arch/x86 2020-01-23 10:41:20 -08:00
cache.h treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
cacheflush.h asm-generic: don't include <linux/mm.h> in cacheflush.h 2020-06-08 11:05:57 -07:00
cacheinfo.h x86/CPU/AMD: Save AMD NodeId as cpu_die_id 2020-12-30 11:54:29 +01:00
ce4100.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
checksum_32.h i386: propagate the calling conventions change down to csum_partial_copy_generic() 2020-08-20 15:45:18 -04:00
checksum_64.h amd64: switch csum_partial_copy_generic() to new calling conventions 2020-08-20 15:45:22 -04:00
checksum.h unify generic instances of csum_partial_copy_nocheck() 2020-08-20 15:45:14 -04:00
clocksource.h x86: Introduce asm/vdso/clocksource.h 2020-03-21 15:23:54 +01:00
cmdline.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
cmpxchg_32.h x86: cmpxchg_32.h: Delete duplicated word 2020-07-26 12:47:22 +02:00
cmpxchg_64.h locking/atomics/x86: Reduce arch_cmpxchg64*() instrumentation 2018-07-25 11:53:58 +02:00
cmpxchg.h x86: Fix various typos in comments 2018-12-03 10:49:13 +01:00
compat.h stat: fix inconsistency between struct stat and struct compat_stat 2022-04-27 13:53:54 +02:00
copy_mc_test.h x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}() 2020-10-06 11:18:04 +02:00
cpu_device_id.h x86/cpu: Add a X86_MATCH_INTEL_FAM6_MODEL_STEPPINGS() macro 2020-05-07 13:48:05 +02:00
cpu_entry_area.h x86/sev: Make the #VC exception stacks part of the default stacks storage 2021-11-18 14:04:32 +01:00
cpu.h x86/cpu: Reinitialize IA32_FEAT_CTL MSR on BSP during wakeup 2020-06-15 14:18:37 +02:00
cpufeature.h x86/alternative: Use ALTERNATIVE_TERNARY() in _static_cpu_has() 2022-07-25 11:26:10 +02:00
cpufeatures.h x86/speculation: Add RSB VM Exit protections 2022-08-11 13:06:47 +02:00
cpuidle_haltpoll.h cpuidle-haltpoll: vcpu hotplug support 2019-09-03 09:36:36 +02:00
cpumask.h x86/entry, cpumask: Provide non-instrumented variant of cpu_is_offline() 2020-06-15 14:10:09 +02:00
crash.h Merge branch 'x86-kdump-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 09:48:19 -08:00
current.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
debugreg.h x86/debug: Remove aout_dump_debugregs() 2020-09-04 15:12:55 +02:00
delay.h x86/delay: Introduce TPAUSE delay 2020-05-07 16:06:20 +02:00
desc_defs.h x86/idt: Make IDT init functions static inlines 2020-09-07 22:44:43 +02:00
desc.h x86/idt: Make IDT init functions static inlines 2020-09-07 22:44:43 +02:00
device.h x86: Remove dev->archdata.iommu pointer 2020-06-30 11:59:48 +02:00
disabled-features.h x86/retbleed: Add fine grained Kconfig knobs 2022-07-25 11:26:50 +02:00
div64.h sched/cputime: Improve cputime_adjust() 2020-06-15 14:10:00 +02:00
dma-mapping.h dma-mapping: move dma-debug.h to kernel/dma/ 2020-10-06 07:07:05 +02:00
dma.h x86/dma: Fix max PFN arithmetic overflow on 32 bit systems 2020-05-28 20:21:32 +02:00
dmi.h x86: Don't include linux/irq.h from asm/hardirq.h 2018-08-05 09:53:13 +02:00
doublefault.h x86/32: Remove CONFIG_DOUBLEFAULT 2020-04-14 14:24:05 +02:00
dwarf2.h x86: remove always-defined CONFIG_AS_CFI_SECTIONS 2020-04-09 00:01:59 +09:00
edac.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
efi.h efi/x86: Move 32-bit code into efi_32.c 2020-08-20 11:18:36 +02:00
elf.h kill elf_fpxregs_t 2020-07-27 14:29:23 -04:00
emergency-restart.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
emulate_prefix.h x86: xen: kvm: Gather the definition of emulate prefixes 2019-10-17 21:31:57 +02:00
entry-common.h x86/entry: Correct reference to intended CONFIG_64_BIT 2021-10-13 10:04:30 +02:00
espfix.h init: Invoke init_espfix_bsp() from mm_init() 2017-12-22 20:13:05 +01:00
exec.h
extable.h x86/mce: Provide method to find out the type of an exception handler 2020-10-07 11:08:59 +02:00
fb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
fixmap.h x86/paravirt: Use CONFIG_PARAVIRT_XXL instead of CONFIG_PARAVIRT 2020-08-15 13:52:11 +02:00
floppy.h floppy: use symbolic register names in the x86 port 2020-05-12 19:34:53 +03:00
frame.h x86/unwind/fp: Fix FP unwinding in ret_from_fork 2020-09-18 09:59:40 +02:00
fsgsbase.h x86/fsgsbase: Replace static_cpu_has() with boot_cpu_has() 2020-08-24 18:18:32 +02:00
ftrace.h Various tracing fixes: 2020-05-14 11:46:52 -07:00
futex.h x86: get rid of user_atomic_cmpxchg_inatomic() 2020-03-27 23:58:55 -04:00
gart.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
GEN-for-each-reg.h x86/asm: Fix register order 2022-07-25 11:26:24 +02:00
genapic.h
geode.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 206 2019-05-30 11:29:53 -07:00
hardirq.h x86/kvm/vmx: Move guest enter/exit into .noinstr.text 2020-07-09 07:08:40 -04:00
highmem.h arch/kmap: define kmap_atomic_prot() for all arch's 2020-06-04 19:06:22 -07:00
hpet.h x86/hpet: Move clockevents into channels 2019-06-28 00:57:24 +02:00
hugetlb.h mm/hugetlb: define a generic fallback for arch_clear_hugepage_flags() 2020-06-03 20:09:46 -07:00
hw_breakpoint.h perf/hw_breakpoint: Remove default hw_breakpoint_arch_parse() 2018-06-26 09:07:58 +02:00
hw_irq.h x86/msi: Consolidate MSI allocation 2020-09-16 16:52:35 +02:00
hyperv-tlfs.h x86/hyperv: Remove aliases with X64 in their name 2020-09-28 09:01:07 +00:00
hypervisor.h x86/paravirt: Remove const mark from x86_hyper_xen_hvm variable 2019-07-17 08:09:59 +02:00
i8259.h x86: i8259: Add missing include file 2018-08-15 13:44:10 -07:00
ia32_unistd.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ia32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
idtentry.h x86/sev: Split up runtime #VC handler for correct state tracking 2021-07-14 16:56:09 +02:00
imr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
inat_types.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
inat.h x86/insn: Add a __ignore_sync_check__ marker 2022-07-25 11:26:11 +02:00
init.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
insn-eval.h x86/insn: Rename insn_decode() to insn_decode_from_regs() 2022-07-25 11:26:10 +02:00
insn.h x86: Add insn_decode_kernel() 2022-07-25 11:26:12 +02:00
inst.h Support for FSGSBASE. Almost 5 years after the first RFC to support it, 2020-08-04 21:16:22 -07:00
intel_ds.h perf/x86/intel: Add Icelake support 2019-04-16 12:26:18 +02:00
intel_mid_vrtc.h x86: Convert x86_platform_ops to timespec64 2018-05-19 14:03:14 +02:00
intel_pconfig.h x86/pconfig: Provide defines and helper to run MKTME_KEY_PROG leaf 2018-03-12 12:10:54 +01:00
intel_pt.h perf/x86/intel: Support PEBS output to PT 2019-08-28 11:29:39 +02:00
intel_punit_ipc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
intel_scu_ipc_legacy.h platform/x86: intel_scu_ipc: Introduce new SCU IPC API 2020-04-24 11:17:28 +01:00
intel_scu_ipc.h platform/x86: intel_scu_ipc: Add managed function to register SCU IPC 2020-04-24 11:17:44 +01:00
intel_telemetry.h platform/x86: intel_pmc_ipc: Convert to MFD 2020-04-24 11:18:44 +01:00
intel-family.h x86/cpu: Add another Alder Lake CPU to the Intel family 2021-02-07 15:37:17 +01:00
intel-mid.h treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
invpcid.h x86/cpu: Use INVPCID mnemonic in invpcid.h 2020-05-12 16:05:30 +02:00
io_apic.h x86/ioapic: Remove unused "IOAPIC_AUTO" define 2020-07-25 12:00:56 +02:00
io_bitmap.h x86/ioperm: Fix io bitmap invalidation on Xen PV 2020-07-18 12:31:49 +02:00
io.h x86/asm: Carve out a generic movdir64b() helper for general usage 2020-10-07 17:49:25 +02:00
iomap.h mm: don't include asm/pgtable.h if linux/mm.h is already included 2020-06-09 09:39:13 -07:00
iommu_table.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
iommu.h iommu/vt-d: Check VT-d RMRR region in BIOS is reported as reserved 2019-11-11 16:06:07 +01:00
iosf_mbi.h media: atomisp: move CCK endpoint address to generic header 2020-07-18 07:17:16 +02:00
irq_remapping.h iommu/irq_remapping: Consolidate irq domain lookup 2020-09-16 16:52:30 +02:00
irq_stack.h x86/irq: Make run_on_irqstack_cond() typesafe 2020-09-22 22:13:34 +02:00
irq_vectors.h x86/irq: Fix outdated comments 2019-04-22 11:42:59 +02:00
irq_work.h x86/entry: Convert various system vectors 2020-06-11 15:15:14 +02:00
irq.h x86/entry: Unbreak __irqentry_text_start/end magic 2020-06-11 15:15:29 +02:00
irqdomain.h x86/pci: Set default irq domain in pcibios_add_device() 2020-09-16 16:52:37 +02:00
irqflags.h x86/pv: Switch SWAPGS to ALTERNATIVE 2021-12-08 09:03:27 +01:00
ist.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118 2019-05-24 17:39:02 +02:00
jailhouse_para.h x86/jailhouse: Fix incorrect SPDX identifier 2018-04-23 10:17:28 +02:00
jump_label.h x86/jump_label: Batch jump label updates 2019-06-17 12:09:23 +02:00
kasan.h kasan: clean up KASAN_SHADOW_SCALE_SHIFT usage 2018-02-06 18:32:43 -08:00
kaslr.h x86/mm: simplify init_trampoline() and surrounding logic 2020-06-09 09:39:13 -07:00
kbdleds.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Kbuild asm-generic: make more kernel-space headers mandatory 2020-04-02 09:35:25 -07:00
kdebug.h x86/dumpstack: Add log_lvl to __show_regs() 2020-07-22 23:56:53 +02:00
kexec-bzimage64.h kexec_file,x86,powerpc: factor out kexec_file_ops functions 2018-04-13 17:10:27 -07:00
kexec.h kexec_file: drop weak attribute from arch_kexec_apply_relocations[_add] 2022-06-09 10:21:26 +02:00
kgdb.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kmap_types.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
kprobes.h x86/debug: Move kprobe_debug_handler() into exc_debug_kernel() 2020-09-04 15:12:52 +02:00
kvm_host.h KVM: x86/mmu: Resolve nx_huge_pages when kvm.ko is loaded 2022-04-20 09:23:25 +02:00
kvm_page_track.h KVM: x86: Handle SRCU initialization failure during page track init 2021-10-06 15:56:04 +02:00
kvm_para.h x86/kvm: Disable all PV features on crash 2021-06-10 13:39:29 +02:00
kvm_types.h KVM: Move x86's version of struct kvm_mmu_memory_cache to common code 2020-07-09 13:29:42 -04:00
kvm_vcpu_regs.h KVM: x86: Explicitly #define the VCPU_REGS_* indices 2019-02-20 22:47:38 +01:00
kvmclock.h x86/kvmclock: Move this_cpu_pvti into kvmclock.h 2021-10-06 15:55:48 +02:00
linkage.h x86/retbleed: Add fine grained Kconfig knobs 2022-07-25 11:26:50 +02:00
livepatch.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
local.h x86/asm: 'Simplify' GEN_*_RMWcc() macros 2018-10-16 17:33:54 +02:00
mach_timer.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mach_traps.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
math_emu.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mc146818rtc.h x86: Convert x86_platform_ops to timespec64 2018-05-19 14:03:14 +02:00
mce.h x86/mce: Defer processing of early errors 2021-09-15 09:50:30 +02:00
mem_encrypt.h x86/sev: Add an x86 version of cc_platform_has() 2021-11-18 14:04:32 +01:00
memtype.h x86/mm: Move pgprot2cachemode out of line 2020-04-20 12:39:17 +02:00
microcode_amd.h x86/microcode/AMD: Increase microcode PATCH_MAX_SIZE 2020-04-14 17:34:46 +02:00
microcode_intel.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
microcode.h x86/cpu: Load microcode during restore_processor_state() 2022-05-09 09:05:07 +02:00
misc.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mmconfig.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mmu_context.h mm: remove unneeded includes of <asm/pgalloc.h> 2020-08-07 11:33:26 -07:00
mmu.h cpuidle: Make CPUIDLE_FLAG_TLB_FLUSHED generic 2020-08-26 12:41:53 +02:00
mmx.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mmzone_32.h x86/mm: Drop deprecated DISCONTIGMEM support for 32-bit 2020-05-28 18:34:30 +02:00
mmzone_64.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mmzone.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
module.h arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h> 2020-04-23 10:50:26 +09:00
mpspec_def.h x86: Introduce and use MP IRQ trigger and polarity defines 2018-01-14 21:11:54 +01:00
mpspec.h x86/init: Remove unused init ops 2020-09-16 16:52:28 +02:00
mshyperv.h PCI: hv: Fix hv_arch_irq_unmask() for multi-MSI 2022-07-29 17:19:09 +02:00
msi.h x86/msi: Use generic MSI domain ops 2020-09-16 16:52:35 +02:00
msidef.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
msr-index.h x86/speculation: Add RSB VM Exit protections 2022-08-11 13:06:47 +02:00
msr-trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
msr.h x86: __always_inline __{rd,wr}msr() 2021-02-07 15:37:14 +01:00
mtrr.h x86/mm/pat: Rename <asm/pat.h> => <asm/memtype.h> 2019-12-10 10:12:55 +01:00
mwait.h sched/idle: Fix arch_cpu_idle() vs tracing 2020-11-24 16:47:35 +01:00
nmi.h x86/nmi: Remove irq_work from the long duration NMI handler 2020-01-11 15:55:39 +01:00
nops.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
nospec-branch.h x86/speculation: Add RSB VM Exit protections 2022-08-11 13:06:47 +02:00
numa_32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
numa.h ACPI updates for 5.10-rc1 2020-10-14 11:42:04 -07:00
olpc_ofw.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
olpc.h Platform: OLPC: Move EC-specific functionality out from x86 2019-05-20 17:27:08 +03:00
orc_lookup.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13 2019-05-21 11:28:45 +02:00
orc_types.h objtool: Make unwind hint definitions available to other architectures 2020-09-10 10:43:13 -05:00
page_32_types.h x86: make TASK_SIZE_MAX usable from assembly code 2020-09-08 22:21:35 -04:00
page_32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
page_64_types.h x86: Increase exception stack sizes 2021-11-18 14:03:53 +01:00
page_64.h Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2018-04-02 15:45:30 -07:00
page_types.h x86/mm: thread pgprot_t through init_memory_mapping() 2020-04-10 15:36:21 -07:00
page.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
paravirt_types.h x86/pv: Switch SWAPGS to ALTERNATIVE 2021-12-08 09:03:27 +01:00
paravirt.h x86: Prepare inline-asm for straight-line-speculation 2022-07-25 11:26:29 +02:00
parport.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pci_x86.h x86/pci: Reducde #ifdeffery in PCI init code 2020-09-16 16:52:35 +02:00
pci-direct.h PCI: Make early dump functionality generic 2018-06-29 20:06:07 -05:00
pci-functions.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pci.h x86/irq: Cleanup the arch_*_msi_irqs() leftovers 2020-09-16 16:52:38 +02:00
percpu.h x86/percpu: Remove unused PER_CPU() macro 2020-07-23 11:46:43 +02:00
perf_event_p4.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
perf_event.h perf/x86/intel: Make anythread filter support conditional 2020-11-09 18:12:36 +01:00
pgalloc.h asm-generic: pgalloc: provide generic pgd_free() 2020-08-07 11:33:26 -07:00
pgtable_32_areas.h mm, x86/mm: Untangle address space layout definitions from basic pgtable type definitions 2019-12-10 10:12:55 +01:00
pgtable_32_types.h mm, x86/mm: Untangle address space layout definitions from basic pgtable type definitions 2019-12-10 10:12:55 +01:00
pgtable_32.h Merge branch 'uaccess.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2020-06-10 16:02:54 -07:00
pgtable_64_types.h x86/mm/64: Do not sync vmalloc/ioremap mappings 2020-08-15 13:56:16 +02:00
pgtable_64.h The biggest change is to not sync the vmalloc and ioremap ranges for x86-64 anymore. 2020-08-03 17:25:42 -07:00
pgtable_areas.h mm, x86/mm: Untangle address space layout definitions from basic pgtable type definitions 2019-12-10 10:12:55 +01:00
pgtable_types.h x86/mm/mem_encrypt: Fix definition of PMD_FLAGS_DEC_WP 2020-12-10 12:28:06 +01:00
pgtable-2level_types.h x86/mm/32: implement arch_sync_kernel_mappings() 2020-06-02 10:59:11 -07:00
pgtable-2level.h Revert "x86/mm/legacy: Populate the user page-table with user pgd's" 2018-09-14 17:08:45 +02:00
pgtable-3level_types.h x86/paravirt: Remove 32-bit support from CONFIG_PARAVIRT_XXL 2020-08-15 13:52:11 +02:00
pgtable-3level.h mmap locking API: convert mmap_sem comments 2020-06-09 09:39:14 -07:00
pgtable-invert.h x86/speculation/l1tf: Exempt zeroed PTEs from inversion 2018-08-17 10:27:36 -07:00
pgtable.h x86/pkey: Fix undefined behaviour with PKRU_WD_BIT 2021-12-29 12:26:02 +01:00
pkeys.h x86/pkeys: Add check for pkey "overflow" 2020-02-24 20:25:21 +01:00
platform_sst_audio.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 441 2019-06-05 17:37:17 +02:00
pm-trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
posix_types.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
preempt.h sched/core: Initialize the idle task with preemption disabled 2021-07-14 16:55:50 +02:00
probe_roms.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
processor-cyrix.h x86/cpu/cyrix: Remove {get,set}Cx86_old macros used for Cyrix processors 2019-03-21 12:28:50 +01:00
processor-flags.h x86/mm/pti: Define X86_CR3_PTI_PCID_USER_BIT on x86_32 2018-07-20 01:11:44 +02:00
processor.h x86/iopl: Fake iopl(3) CLI/STI usage 2021-11-21 13:46:36 +01:00
prom.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
proto.h x86/asm: Ensure asm/proto.h can be included stand-alone 2021-08-04 12:46:39 +02:00
pti.h x86: Use the correct SPDX License Identifier in headers 2019-10-01 20:31:35 +02:00
ptrace.h x86/sev-es: Introduce ip_within_syscall_gap() helper 2021-03-17 17:06:35 +01:00
purgatory.h x86/kdump: Remove the backup region handling 2019-11-14 18:24:43 +01:00
pvclock-abi.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pvclock.h x86/vdso: Switch to generic vDSO implementation 2019-06-22 21:21:10 +02:00
qrwlock.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
qspinlock_paravirt.h x86: Prepare inline-asm for straight-line-speculation 2022-07-25 11:26:29 +02:00
qspinlock.h x86/kvm: Add "nopvspin" parameter to disable PV spinlocks 2020-07-08 16:21:57 -04:00
realmode.h x86/mm: Flush global TLB when switching to trampoline page-table 2022-01-27 10:54:14 +01:00
reboot_fixups.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
reboot.h x86/headers: Fix -Wmissing-prototypes warning 2018-11-23 07:59:59 +01:00
required-features.h x86/paravirt: Use CONFIG_PARAVIRT_XXL instead of CONFIG_PARAVIRT 2020-08-15 13:52:11 +02:00
resctrl.h x86/cpu: Move resctrl CPUID code to resctrl/ 2020-05-06 17:51:21 +02:00
rmwcc.h jump_label: move 'asm goto' support test to Kconfig 2019-01-06 09:46:51 +09:00
seccomp.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sections.h x86/setup: Fix static memory detection 2020-03-19 11:58:13 +01:00
segment.h This feature enhances the current guest memory encryption support 2020-10-14 10:21:34 -07:00
serial.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
set_memory.h x86/{mce,mm}: Unmap the entire page if the whole page is affected and poisoned 2020-06-11 15:19:17 +02:00
setup_arch.h
setup.h treewide: Convert macro and uses of __section(foo) to __section("foo") 2020-10-25 14:51:49 -07:00
sev-es.h x86/efi: Add GHCB mappings when SEV-ES is active 2020-09-10 21:48:50 +02:00
shmparam.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sigcontext.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sigframe.h x86: switch sigframe sigset handling to explict __get_user()/__put_user() 2020-03-18 15:29:54 -04:00
sighandling.h Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-31 11:04:05 -07:00
signal.h x86/entry: Use generic syscall exit functionality 2020-07-24 15:04:59 +02:00
simd.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
smap.h x86/alternative: Merge include files 2022-07-25 11:26:09 +02:00
smp.h ACPI: processor: Fix build when CONFIG_ACPI_PROCESSOR=m 2021-04-14 08:41:58 +02:00
sparsemem.h mm: fix phys_to_target_node() and memory_add_physaddr_to_nid() exports 2020-11-22 10:48:22 -08:00
spec-ctrl.h x86/speculation: Prevent stale SPEC_CTRL msr content 2018-11-28 11:57:12 +01:00
special_insns.h x86/asm: Fix SETZ size enqcmds() build failure 2021-09-30 10:11:05 +02:00
spinlock_types.h x86/spinlock: Remove obsolete ticket spinlock macros and types 2020-05-28 21:18:40 +02:00
spinlock.h Merge branch 'linus' into locking/core, to resolve conflicts 2017-11-07 10:32:44 +01:00
sta2x11.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
stackprotector.h x86/stackprotector: Pre-initialize canary for secondary CPUs 2020-06-18 13:09:17 +02:00
stacktrace.h x86/dumpstack/64: Add noinstr version of get_stack_info() 2020-09-09 11:33:19 +02:00
static_call.h x86/retbleed: Add fine grained Kconfig knobs 2022-07-25 11:26:50 +02:00
string_32.h x86/asm: Remove unused __constant_c_x_memset() macro and inlines 2019-01-12 17:54:49 +01:00
string_64.h x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}() 2020-10-06 11:18:04 +02:00
string.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
suspend_32.h x86/pm: Fix false positive kmemleak report in msr_build_context() 2022-06-09 10:21:04 +02:00
suspend_64.h x86/pm: Fix false positive kmemleak report in msr_build_context() 2022-06-09 10:21:04 +02:00
suspend.h x86, hibernate: Rename temp_level4_pgt to temp_pgt 2018-10-03 11:56:34 +02:00
svm.h KVM: nSVM: avoid picking up unsupported bits from L2 in int_ctl (CVE-2021-3653) 2021-08-18 08:59:18 +02:00
swiotlb.h x86/dma: Use generic swiotlb_ops 2018-03-20 10:01:57 +01:00
switch_to.h x86/mm: remove vmalloc faulting 2020-06-02 10:59:12 -07:00
sync_bitops.h x86/asm: Modernize sync_bitops.h 2019-04-10 09:53:31 +02:00
sync_core.h x86/membarrier: Get rid of a dubious optimization 2020-12-09 09:37:42 +01:00
syscall_wrapper.h x86/entry: Fix build error x86 with !CONFIG_POSIX_TIMERS 2020-03-25 10:06:20 +01:00
syscall.h Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-31 11:04:05 -07:00
syscalls.h x86: Remove unneeded includes 2020-03-21 16:03:25 +01:00
sysfb.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
text-patching.h x86/alternatives: Teach text_poke_bp() to emulate RET 2020-09-01 09:58:05 +02:00
thread_info.h x86: Introduce TS_COMPAT_RESTART to fix get_nr_restart_syscall() 2021-03-25 09:04:17 +01:00
time.h x86/timer: Skip PIT initialization on modern chipsets 2019-06-29 11:35:35 +02:00
timer.h Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-11-13 19:07:38 -08:00
timex.h x86/tsc: Use fallback for random_get_entropy() instead of zero 2022-05-30 09:33:42 +02:00
tlb.h asm-generic/tlb: rename HAVE_RCU_TABLE_FREE 2020-02-04 03:05:26 +00:00
tlbbatch.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
tlbflush.h x86/tlb: Restrict access to tlbstate 2020-04-26 18:52:33 +02:00
topology.h x86/topology: Make __max_die_per_package available unconditionally 2021-01-27 11:55:13 +01:00
trace_clock.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
trap_pf.h x86/traps: Move pf error codes to <asm/trap_pf.h> 2020-09-07 19:45:24 +02:00
trapnr.h x86/boot/compressed/64: Add stage1 #VC handler 2020-09-07 19:45:25 +02:00
traps.h This feature enhances the current guest memory encryption support 2020-10-14 10:21:34 -07:00
tsc.h x86/tsc: Use fallback for random_get_entropy() instead of zero 2022-05-30 09:33:42 +02:00
uaccess_32.h x86: get rid of small constant size cases in raw_copy_{to,from}_user() 2020-03-18 15:53:25 -04:00
uaccess_64.h x86, powerpc: Rename memcpy_mcsafe() to copy_mc_to_{user, kernel}() 2020-10-06 11:18:04 +02:00
uaccess.h x86/uaccess: Move variable into switch case statement 2022-01-27 10:53:55 +01:00
umip.h x86/Kconfig: Rename UMIP config parameter 2019-11-07 11:07:29 +01:00
unaligned.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
unistd.h x86/entry: Move max syscall number calculation to syscallhdr.sh 2020-03-21 16:03:21 +01:00
unwind_hints.h objtool: Re-add UNWIND_HINT_{SAVE_RESTORE} 2022-07-25 11:26:47 +02:00
unwind.h x86/unwind/orc: Fix premature unwind stoppage due to IRET frames 2020-04-25 12:22:29 +02:00
uprobes.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
user32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
user_32.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
user_64.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
user.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vdso.h x86/vdso: Add time napespace page 2020-01-14 12:20:58 +01:00
vermagic.h arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h> 2020-04-23 10:50:26 +09:00
vga.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vgtod.h um: Fix header inclusion 2020-03-23 18:45:14 +01:00
virtext.h x86/virt: Eat faults on VMXOFF in reboot flows 2021-03-04 11:38:34 +01:00
vm86.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vmalloc.h mm, x86/mm: Untangle address space layout definitions from basic pgtable type definitions 2019-12-10 10:12:55 +01:00
vmware.h x86/cpu/vmware: Fix platform detection VMWARE_PORT macro 2019-10-22 00:51:44 +02:00
vmx.h KVM: VMX: Rename RDTSCP secondary exec control name to insert "ENABLE" 2020-09-28 07:57:30 -04:00
vmxfeatures.h KVM: VMX: Add VMX_FEATURE_USR_WAIT_PAUSE 2020-02-21 18:05:19 +01:00
vsyscall.h x86/vsyscall: Show something useful on a read fault 2019-06-28 00:04:39 +02:00
vvar.h x86/vdso: Add time napespace page 2020-01-14 12:20:58 +01:00
word-at-a-time.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
x86_init.h This feature enhances the current guest memory encryption support 2020-10-14 10:21:34 -07:00
xor_32.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00
xor_64.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xor_avx.h x86: remove always-defined CONFIG_AS_AVX 2020-04-09 00:01:59 +09:00
xor.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47 2019-05-24 17:27:13 +02:00