Andy Lutomirski 4ba55e65f4 x86/mm/32: Load a sane CR3 before cpu_init() on secondary CPUs ... For unknown historical reasons (i.e. Borislav doesn't recall), 32-bit kernels invoke cpu_init() on secondary CPUs with initial_page_table loaded into CR3. Then they set current->active_mm to &init_mm and call enter_lazy_tlb() before fixing CR3. This means that the x86 TLB code gets invoked while CR3 is inconsistent, and, with the improved PCID sanity checks I added, we warn. Fix it by loading swapper_pg_dir (i.e. init_mm.pgd) earlier. Reported-by: Paul Menzel <pmenzel@molgen.mpg.de> Reported-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Borislav Petkov <bpetkov@suse.de> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 72c0098d92 ("x86/mm: Reinitialize TLB state on hotplug and resume") Link: http://lkml.kernel.org/r/30cdfea504682ba3b9012e77717800a91c22097f.1505663533.git.luto@kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>		2017-09-17 18:59:09 +02:00
..
acpi	dmi: Mark all struct dmi_system_id instances const	2017-09-14 11:59:30 +02:00
apic	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-09-12 11:34:39 -07:00
cpu	x86/mm/32: Move setup_clear_cpu_cap(X86_FEATURE_PCID) earlier	2017-09-17 18:59:08 +02:00
fpu
kprobes	kprobes/x86: Do not jump-optimize kprobes on irq entry code	2017-08-10 16:28:53 +02:00
.gitignore
alternative.c	x86: Clarify/fix no-op barriers for text_poke_bp()	2017-08-10 17:35:19 +02:00
amd_gart_64.c	x86: remove arch specific dma_supported implementation	2017-06-28 06:54:46 -07:00
amd_nb.c
apb_timer.c
aperture_64.c
apm_32.c	dmi: Mark all struct dmi_system_id instances const	2017-09-14 11:59:30 +02:00
asm-offsets_32.c	x86/lguest: Remove lguest support	2017-08-24 09:57:28 +02:00
asm-offsets_64.c	x86/xen: Get rid of paravirt op adjust_exception_frame	2017-08-31 21:35:10 +02:00
asm-offsets.c
audit_64.c
bootflag.c
check.c
cpuid.c
crash_dump_32.c
crash_dump_64.c
crash.c	kexec: move vmcoreinfo out of the kernel's .bss section	2017-07-12 16:25:59 -07:00
devicetree.c	x86/devicetree: Convert to using %pOF instead of ->full_name	2017-07-21 10:14:15 +02:00
doublefault.c
dumpstack_32.c	x86/dumpstack: Fix interrupt and exception stack boundary checks	2017-07-18 10:56:23 +02:00
dumpstack_64.c	x86/dumpstack: Fix interrupt and exception stack boundary checks	2017-07-18 10:56:23 +02:00
dumpstack.c	x86/asm/32: Remove a bunch of '& 0xffff' from pt_regs segment reads	2017-07-30 12:04:41 +02:00
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
early-quirks.c	ACPI updates for v4.14-rc1	2017-09-05 12:45:03 -07:00
ebda.c
eisa.c	x86/eisa: Add missing include	2017-08-31 21:34:48 +02:00
espfix_64.c	x86/mm: Provide general kernel support for memory encryption	2017-07-18 11:38:00 +02:00
ftrace_32.S
ftrace_64.S
ftrace.c
head32.c	x86/idt: Move early IDT setup out of 32-bit asm	2017-08-29 12:07:26 +02:00
head64.c	Merge branch 'x86-apic-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-09-04 17:43:56 -07:00
head_32.S	x86/idt: Remove superfluous ALIGNment	2017-08-31 15:47:02 +02:00
head_64.S	x86/mm: Provide general kernel support for memory encryption	2017-07-18 11:38:00 +02:00
hpet.c	x86/hpet: Cure interface abuse in the resume path	2017-08-01 13:02:37 +02:00
hw_breakpoint.c
i8237.c
i8253.c
i8259.c
idt.c	x86/idt: Fix the X86_TRAP_BP gate	2017-09-01 11:04:56 +02:00
io_delay.c	dmi: Mark all struct dmi_system_id instances const	2017-09-14 11:59:30 +02:00
ioport.c
irq_32.c
irq_64.c
irq_work.c	x86/irq_work: Make it depend on APIC	2017-08-29 11:42:30 +02:00
irq.c	x86/ipi: Make platform IPI depend on APIC	2017-08-29 11:42:29 +02:00
irqinit.c	x86/idt: Move interrupt gate initialization to IDT code	2017-08-29 12:07:28 +02:00
itmt.c
jump_label.c
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/boot/e820: Rename the e820_table_firmware to e820_table_kexec	2017-07-05 10:09:02 +02:00
kgdb.c
ksysfs.c	Merge branch 'linus' into x86/mm to pick up fixes and to fix conflicts	2017-08-26 09:19:13 +02:00
kvm.c	kvm,x86: Fix apf_task_wake_one() wq serialization	2017-09-15 16:57:12 +02:00
kvmclock.c
ldt.c	x86/ldt/64: Refresh DS and ES when modify_ldt changes an entry	2017-07-27 09:12:57 +02:00
livepatch.c
machine_kexec_32.c	x86/idt: Consolidate IDT invalidation	2017-08-29 12:07:26 +02:00
machine_kexec_64.c	x86/mm, kexec: Fix memory corruption with SME on successive kexecs	2017-07-30 12:09:12 +02:00
Makefile	x86/idt: Create file for IDT related code	2017-08-29 12:07:25 +02:00
mmconf-fam10h_64.c
module.c	x86/unwind: Add the ORC unwinder	2017-07-26 13:18:20 +02:00
mpparse.c	x86/boot: Use memremap() to map the MPF and MPC data	2017-07-18 11:38:02 +02:00
msr.c
nmi_selftest.c
nmi.c	x86/nmi: Use raw lock	2017-08-16 20:40:09 +02:00
paravirt_patch_32.c
paravirt_patch_64.c
paravirt-spinlocks.c
paravirt.c	x86/paravirt: Remove no longer used paravirt functions	2017-09-13 10:55:15 +02:00
pci-calgary_64.c	x86: remove arch specific dma_supported implementation	2017-06-28 06:54:46 -07:00
pci-dma.c	x86, swiotlb: Add memory encryption support	2017-07-18 11:38:03 +02:00
pci-iommu_table.c
pci-nommu.c	x86, swiotlb: Add memory encryption support	2017-07-18 11:38:03 +02:00
pci-swiotlb.c	x86, swiotlb: Add memory encryption support	2017-07-18 11:38:03 +02:00
pcspeaker.c
perf_regs.c
platform-quirks.c	x86/lguest: Remove lguest support	2017-08-24 09:57:28 +02:00
pmem.c
probe_roms.c
process_32.c	Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-09-04 13:56:37 -07:00
process_64.c	Merge branch 'x86-cache-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-09-04 13:56:37 -07:00
process.c	x86/mm, kexec: Allow kexec to be used with SME	2017-07-18 11:38:04 +02:00
ptrace.c
pvclock.c
quirks.c	treewide: Consolidate Apple DMI checks	2017-08-03 23:26:22 +02:00
reboot_fixups_32.c
reboot.c	dmi: Mark all struct dmi_system_id instances const	2017-09-14 11:59:30 +02:00
relocate_kernel_32.S
relocate_kernel_64.S	x86/mm, kexec: Fix memory corruption with SME on successive kexecs	2017-07-30 12:09:12 +02:00
resource.c
rtc.c
setup_percpu.c	treewide: make "nr_cpu_ids" unsigned	2017-09-08 18:26:48 -07:00
setup.c	x86/mm/64: Initialize CR4.PCIDE early	2017-09-13 09:54:43 +02:00
signal_compat.c	signal: Remove kernel interal si_code magic	2017-07-24 14:30:28 -05:00
signal.c	x86/asm/32: Remove a bunch of '& 0xffff' from pt_regs segment reads	2017-07-30 12:04:41 +02:00
smp.c	x86/tracing: Disentangle pagefault and resched IPI tracing key	2017-08-29 11:42:29 +02:00
smpboot.c	x86/mm/32: Load a sane CR3 before cpu_init() on secondary CPUs	2017-09-17 18:59:09 +02:00
stacktrace.c
step.c	x86/asm/32: Remove a bunch of '& 0xffff' from pt_regs segment reads	2017-07-30 12:04:41 +02:00
sys_x86_64.c	x86/mm: Prepare to expose larger address space to userspace	2017-07-21 10:05:18 +02:00
sysfb_efi.c
sysfb_simplefb.c
sysfb.c
tboot.c
tce_64.c
time.c
tls.c	x86/asm: Replace access to desc_struct:a/b fields	2017-08-29 12:07:25 +02:00
tls.h
topology.c
trace_clock.c
tracepoint.c	x86/tracing: Disentangle pagefault and resched IPI tracing key	2017-08-29 11:42:29 +02:00
traps.c	x86/idt: Move regular trap init to tables	2017-08-29 12:07:27 +02:00
tsc_msr.c
tsc_sync.c
tsc.c	Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-07-03 18:01:50 -07:00
unwind_frame.c	Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-09-04 09:52:57 -07:00
unwind_guess.c	x86/unwind: Add the ORC unwinder	2017-07-26 13:18:20 +02:00
unwind_orc.c	x86/unwind: Add the ORC unwinder	2017-07-26 13:18:20 +02:00
uprobes.c
verify_cpu.S
vm86_32.c
vmlinux.lds.S	x86/unwind: Add the ORC unwinder	2017-07-26 13:18:20 +02:00
vsmp_64.c
x86_init.c