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Thomas Gleixner d7e94dbdac x86/split_lock: Provide handle_guest_split_lock() 
Without at least minimal handling for split lock detection induced #AC,
VMX will just run into the same problem as the VMWare hypervisor, which
was reported by Kenneth.

It will inject the #AC blindly into the guest whether the guest is
prepared or not.

Provide a function for guest mode which acts depending on the host
SLD mode. If mode == sld_warn, treat it like user space, i.e. emit a
warning, disable SLD and mark the task accordingly. Otherwise force
SIGBUS.

 [ bp: Add a !CPU_SUP_INTEL stub for handle_guest_split_lock(). ]

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Link: https://lkml.kernel.org/r/20200410115516.978037132@linutronix.de
Link: https://lkml.kernel.org/r/20200402123258.895628824@linutronix.de
2020-04-11 16:39:30 +02:00
..
acpi
ACPI, x86/boot: make acpi_nobgrt static
2020-04-08 14:32:03 +02:00
apic
Updates for the interrupt subsystem:
2020-03-30 17:35:14 -07:00
cpu
x86/split_lock: Provide handle_guest_split_lock()
2020-04-11 16:39:30 +02:00
fpu
x86/pkeys: Add check for pkey "overflow"
2020-02-24 20:25:21 +01:00
kprobes
x86/optprobe: Fix OPTPROBE vs UACCESS
2020-03-20 13:06:22 +01:00
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
alternative.c
x86/alternatives: Mark text_poke_loc_init() static
2020-03-25 12:42:35 +01:00
amd_gart_64.c
x86/mm: thread pgprot_t through init_memory_mapping()
2020-04-10 15:36:21 -07:00
amd_nb.c
x86/amd_nb, char/amd64-agp: Use amd_nb_num() accessor
2020-03-17 10:25:58 +01:00
apb_timer.c
remove ioremap_nocache and devm_ioremap_nocache
2020-01-06 09:45:59 +01:00
aperture_64.c
x86/gart: Exclude GART aperture from kcore
2019-03-23 12:11:49 +01:00
apm_32.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 118
2019-05-24 17:39:02 +02:00
asm-offsets_32.c
x86 entry code updates:
2020-03-30 19:14:28 -07:00
asm-offsets_64.c
x86/entry: Move max syscall number calculation to syscallhdr.sh
2020-03-21 16:03:21 +01:00
asm-offsets.c
efi/x86: Avoid using code32_start
2020-03-08 09:58:17 +01:00
audit_64.c
…
bootflag.c
…
check.c
x86/headers: Fix -Wmissing-prototypes warning
2018-11-23 07:59:59 +01:00
cpuid.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 142
2019-05-30 11:25:17 -07:00
crash_core_32.c
x86/crash: Define arch_crash_save_vmcoreinfo() if CONFIG_CRASH_CORE=y
2019-12-23 12:58:41 +01:00
crash_core_64.c
x86/crash: Define arch_crash_save_vmcoreinfo() if CONFIG_CRASH_CORE=y
2019-12-23 12:58:41 +01:00
crash_dump_32.c
…
crash_dump_64.c
fs/core/vmcore: Move sev_active() reference to x86 arch code
2019-08-09 22:52:10 +10:00
crash.c
x86/crash: Use resource_size()
2020-01-09 14:40:03 +01:00
devicetree.c
x86/headers: Fix -Wmissing-prototypes warning
2018-11-23 07:59:59 +01:00
doublefault_32.c
x86/doublefault/32: Rewrite the x86_32 #DF handler and unify with 64-bit
2019-11-26 22:00:04 +01:00
dumpstack_32.c
x86/doublefault/32: Move #DF stack and TSS to cpu_entry_area
2019-11-26 21:53:34 +01:00
dumpstack_64.c
x86/dumpstack/64: Don't evaluate exception stacks before setup
2019-11-05 00:51:35 +01:00
dumpstack.c
x86/kasan: Print original address on #GP
2019-12-31 13:15:38 +01:00
e820.c
ACPI updates for 5.5-rc1
2019-11-26 19:25:25 -08:00
early_printk.c
efi/x86: Convert x86 EFI earlyprintk into generic earlycon implementation
2019-02-04 08:27:30 +01:00
early-quirks.c
x86/intel: Disable HPET on Intel Ice Lake platforms
2019-11-29 12:17:58 +01:00
ebda.c
…
eisa.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 243
2019-06-19 17:09:07 +02:00
espfix_64.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 288
2019-06-05 17:36:37 +02:00
ftrace_32.S
x86/ftrace: Get rid of function_hook
2019-10-25 10:52:22 +02:00
ftrace_64.S
New tracing features:
2019-11-27 11:42:01 -08:00
ftrace.c
Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2020-01-28 09:44:15 -08:00
head32.c
x86/boot: Mostly revert commit ae7e1238e68f2a ("Add ACPI RSDP address to setup_header")
2018-11-20 09:43:10 +01:00
head64.c
x86/boot/64: Make level2_kernel_pgt pages invalid outside kernel area
2019-10-11 18:38:15 +02:00
head_32.S
x86/boot: Remove KEEP_SEGMENTS support
2020-02-22 23:37:37 +01:00
head_64.S
x86/asm/64: Change all ENTRY+END to SYM_CODE_*
2019-10-18 11:58:26 +02:00
hpet.c
remove ioremap_nocache and devm_ioremap_nocache
2020-01-06 09:45:59 +01:00
hw_breakpoint.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
i8237.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
i8253.c
x86/timer: Skip PIT initialization on modern chipsets
2019-06-29 11:35:35 +02:00
i8259.c
…
idt.c
Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-07-08 11:22:57 -07:00
ima_arch.c
EFI updates for v5.7:
2020-02-26 15:21:22 +01:00
io_delay.c
x86/io_delay: Define IO_DELAY macros in C instead of Kconfig
2019-05-24 08:46:06 +02:00
ioport.c
x86/iopl: Include prototype header for ksys_ioperm()
2020-02-17 16:36:53 +01:00
irq_32.c
x86/irq: Move IS_ERR_OR_NULL() check into common do_IRQ() code
2019-08-19 23:19:06 +02:00
irq_64.c
x86/irq: Move IS_ERR_OR_NULL() check into common do_IRQ() code
2019-08-19 23:19:06 +02:00
irq_work.c
…
irq.c
x86/irq: Remove useless return value from do_IRQ()
2020-02-27 14:48:40 +01:00
irqflags.S
x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_*
2019-10-18 11:58:33 +02:00
irqinit.c
x86: Replace setup_irq() by request_irq()
2020-03-21 15:15:47 +01:00
itmt.c
proc/sysctl: add shared variables for range check
2019-07-18 17:08:07 -07:00
jailhouse.c
x86/jailhouse: Only enable platform UARTs if available
2019-10-10 15:43:59 +02:00
jump_label.c
x86/jump_label: Move 'inline' keyword placement
2020-03-27 11:05:41 +01:00
kdebugfs.c
x86/boot: Introduce setup_indirect
2019-11-12 16:21:15 +01:00
kexec-bzimage64.c
efi/x86: Make fw_vendor, config_table and runtime sysfs nodes x86 specific
2020-02-23 21:59:42 +01:00
kgdb.c
x86/apic: Provide and use helper for send_IPI_allbutself()
2019-07-25 16:12:00 +02:00
ksysfs.c
x86/boot: Introduce setup_indirect
2019-11-12 16:21:15 +01:00
kvm.c
KVM: Pre-allocate 1 cpumask variable per cpu for both pv tlb and pv ipis
2020-02-28 10:34:25 +01:00
kvmclock.c
x86/vdso: Use generic VDSO clock mode storage
2020-02-17 14:40:23 +01:00
ldt.c
x86: Remove unneeded includes
2020-03-21 16:03:25 +01:00
livepatch.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
2019-05-21 11:28:45 +02:00
machine_kexec_32.c
x86/crash: Define arch_crash_save_vmcoreinfo() if CONFIG_CRASH_CORE=y
2019-12-23 12:58:41 +01:00
machine_kexec_64.c
x86/crash: Define arch_crash_save_vmcoreinfo() if CONFIG_CRASH_CORE=y
2019-12-23 12:58:41 +01:00
Makefile
Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
2020-04-02 14:49:46 -07:00
mmconf-fam10h_64.c
…
module.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
mpparse.c
x86/boot: Fix memory leak in default_get_smp_config()
2019-07-16 23:13:48 +02:00
msr.c
x86/msr: Restrict MSR access when the kernel is locked down
2019-08-19 21:54:16 -07:00
nmi_selftest.c
…
nmi.c
x86: Fix a handful of typos
2020-02-16 20:58:06 +01:00
paravirt_patch.c
x86/paravirt: Standardize 'insn_buff' variable names
2019-04-29 16:05:49 +02:00
paravirt-spinlocks.c
…
paravirt.c
x86/ioperm: Add new paravirt function update_io_bitmap()
2020-02-29 12:43:09 +01:00
pci-dma.c
dma-mapping updates for 5.5-rc1
2019-11-28 11:16:43 -08:00
pci-iommu_table.c
…
pci-swiotlb.c
dma-mapping: fix filename references
2019-09-03 08:36:30 +02:00
pcspeaker.c
…
perf_regs.c
perf/x86/regs: Check reserved bits
2019-06-24 19:19:24 +02:00
platform-quirks.c
…
pmem.c
…
probe_roms.c
…
process_32.c
x86: Remove unneeded includes
2020-03-21 16:03:25 +01:00
process_64.c
x86: Remove unneeded includes
2020-03-21 16:03:25 +01:00
process.c
Support for "split lock" detection:
2020-03-30 19:35:52 -07:00
process.h
x86: Use the correct SPDX License Identifier in headers
2019-10-01 20:31:35 +02:00
ptrace.c
x86/ptrace: Document FSBASE and GSBASE ABI oddities
2019-11-26 22:00:12 +01:00
pvclock.c
x86/vdso: Use generic VDSO clock mode storage
2020-02-17 14:40:23 +01:00
quirks.c
remove ioremap_nocache and devm_ioremap_nocache
2020-01-06 09:45:59 +01:00
reboot_fixups_32.c
…
reboot.c
x86: Fix a handful of typos
2020-02-16 20:58:06 +01:00
relocate_kernel_32.S
x86/asm: Annotate relocate_kernel_{32,64}.c
2019-10-18 09:53:19 +02:00
relocate_kernel_64.S
x86/kexec: Make relocate_kernel_64.S objtool clean
2020-03-25 18:28:28 +01:00
resource.c
…
rtc.c
…
setup_percpu.c
x86: Use pr_warn instead of pr_warning
2019-10-18 15:00:18 +02:00
setup.c
mm: hugetlb: optionally allocate gigantic hugepages using cma
2020-04-10 15:36:21 -07:00
signal_compat.c
…
signal.c
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
smp.c
x86/smp: Move smp_function_call implementations into IPI code
2019-07-25 16:12:01 +02:00
smpboot.c
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
stacktrace.c
x86 user stack frame reads: switch to explicit __get_user()
2020-02-15 17:26:26 -05:00
step.c
…
sys_ia32.c
x86/entry/32: Use IA32-specific wrappers for syscalls taking 64-bit arguments
2020-03-21 16:03:24 +01:00
sys_x86_64.c
x86: Remove unneeded includes
2020-03-21 16:03:25 +01:00
sysfb_efi.c
x86/sysfb_efi: Add quirks for some devices with swapped width and height
2019-07-22 10:47:11 +02:00
sysfb_simplefb.c
x86/sysfb: Fix check for bad VRAM size
2020-01-20 10:57:53 +01:00
sysfb.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
tboot.c
remove ioremap_nocache and devm_ioremap_nocache
2020-01-06 09:45:59 +01:00
time.c
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
tls.c
x86/tls: Fix possible spectre-v1 in do_get_thread_area()
2019-06-27 23:48:04 +02:00
tls.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 193
2019-05-30 11:29:21 -07:00
topology.c
x86/smp: Replace cpu_up/down() with add/remove_cpu()
2020-03-25 12:59:35 +01:00
trace_clock.c
…
tracepoint.c
x86/kernel: Fix more -Wmissing-prototypes warnings
2018-12-08 12:24:35 +01:00
traps.c
Support for "split lock" detection:
2020-03-30 19:35:52 -07:00
tsc_msr.c
x86 timer updates:
2020-03-30 19:55:39 -07:00
tsc_sync.c
x86: Fix a handful of typos
2020-02-16 20:58:06 +01:00
tsc.c
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
umip.c
Merge branches 'x86-cpu-for-linus' and 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2019-11-26 08:58:08 -08:00
unwind_frame.c
x86/stackframe/32: Provide consistent pt_regs
2019-06-25 10:23:47 +02:00
unwind_guess.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
unwind_orc.c
x86/unwind/orc: Fix !CONFIG_MODULES build warning
2020-01-07 08:15:11 +01:00
uprobes.c
x86/apic, x86/uprobes: Correct parameter names in kernel-doc comments
2019-10-27 09:00:28 +01:00
verify_cpu.S
x86/asm: Annotate local pseudo-functions
2019-10-18 10:04:04 +02:00
vm86_32.c
x86: switch save_v86_state() to unsafe_put_user()
2020-03-18 20:36:01 -04:00
vmlinux.lds.S
Merge branch 'x86-build-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
2020-03-31 10:51:12 -07:00
vsmp_64.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 346
2019-06-05 17:37:08 +02:00
x86_init.c
A set of fixes for X86:
2020-02-09 12:11:12 -08:00