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commit 12a8cc7fcf upstream.
We are going to support boot-time switching between 4- and 5-level
paging. For KASAN it means we cannot have different KASAN_SHADOW_OFFSET
for different paging modes: the constant is passed to gcc to generate
code and cannot be changed at runtime.
This patch changes KASAN code to use 0xdffffc0000000000 as shadow offset
for both 4- and 5-level paging.
For 5-level paging it means that shadow memory region is not aligned to
PGD boundary anymore and we have to handle unaligned parts of the region
properly.
In addition, we have to exclude paravirt code from KASAN instrumentation
as we now use set_pgd() before KASAN is fully ready.
[kirill.shutemov@linux.intel.com: clenaup, changelog message]
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@suse.de>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/20170929140821.37654-4-kirill.shutemov@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
146 lines
4.6 KiB
Makefile
146 lines
4.6 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for the linux kernel.
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#
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extra-y := head_$(BITS).o
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extra-y += head$(BITS).o
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extra-y += ebda.o
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extra-y += platform-quirks.o
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extra-y += vmlinux.lds
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CPPFLAGS_vmlinux.lds += -U$(UTS_MACHINE)
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ifdef CONFIG_FUNCTION_TRACER
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# Do not profile debug and lowlevel utilities
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CFLAGS_REMOVE_tsc.o = -pg
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CFLAGS_REMOVE_paravirt-spinlocks.o = -pg
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CFLAGS_REMOVE_pvclock.o = -pg
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CFLAGS_REMOVE_kvmclock.o = -pg
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CFLAGS_REMOVE_ftrace.o = -pg
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CFLAGS_REMOVE_early_printk.o = -pg
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CFLAGS_REMOVE_head64.o = -pg
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endif
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KASAN_SANITIZE_head$(BITS).o := n
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KASAN_SANITIZE_dumpstack.o := n
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KASAN_SANITIZE_dumpstack_$(BITS).o := n
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KASAN_SANITIZE_stacktrace.o := n
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KASAN_SANITIZE_paravirt.o := n
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OBJECT_FILES_NON_STANDARD_relocate_kernel_$(BITS).o := y
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OBJECT_FILES_NON_STANDARD_ftrace_$(BITS).o := y
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OBJECT_FILES_NON_STANDARD_test_nx.o := y
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OBJECT_FILES_NON_STANDARD_paravirt_patch_$(BITS).o := y
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# If instrumentation of this dir is enabled, boot hangs during first second.
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# Probably could be more selective here, but note that files related to irqs,
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# boot, dumpstack/stacktrace, etc are either non-interesting or can lead to
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# non-deterministic coverage.
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KCOV_INSTRUMENT := n
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CFLAGS_irq.o := -I$(src)/../include/asm/trace
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obj-y := process_$(BITS).o signal.o
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obj-$(CONFIG_COMPAT) += signal_compat.o
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obj-y += traps.o idt.o irq.o irq_$(BITS).o dumpstack_$(BITS).o
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obj-y += time.o ioport.o dumpstack.o nmi.o
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obj-$(CONFIG_MODIFY_LDT_SYSCALL) += ldt.o
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obj-y += setup.o x86_init.o i8259.o irqinit.o jump_label.o
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obj-$(CONFIG_IRQ_WORK) += irq_work.o
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obj-y += probe_roms.o
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obj-$(CONFIG_X86_64) += sys_x86_64.o
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obj-$(CONFIG_X86_ESPFIX64) += espfix_64.o
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obj-$(CONFIG_SYSFS) += ksysfs.o
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obj-y += bootflag.o e820.o
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obj-y += pci-dma.o quirks.o topology.o kdebugfs.o
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obj-y += alternative.o i8253.o pci-nommu.o hw_breakpoint.o
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obj-y += tsc.o tsc_msr.o io_delay.o rtc.o
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obj-y += pci-iommu_table.o
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obj-y += resource.o
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obj-y += process.o
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obj-y += fpu/
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obj-y += ptrace.o
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obj-$(CONFIG_X86_32) += tls.o
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obj-$(CONFIG_IA32_EMULATION) += tls.o
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obj-y += step.o
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obj-$(CONFIG_INTEL_TXT) += tboot.o
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obj-$(CONFIG_ISA_DMA_API) += i8237.o
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obj-$(CONFIG_STACKTRACE) += stacktrace.o
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obj-y += cpu/
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obj-y += acpi/
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obj-y += reboot.o
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obj-$(CONFIG_X86_MSR) += msr.o
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obj-$(CONFIG_X86_CPUID) += cpuid.o
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obj-$(CONFIG_PCI) += early-quirks.o
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apm-y := apm_32.o
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obj-$(CONFIG_APM) += apm.o
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obj-$(CONFIG_SMP) += smp.o
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obj-$(CONFIG_SMP) += smpboot.o
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obj-$(CONFIG_X86_TSC) += tsc_sync.o
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obj-$(CONFIG_SMP) += setup_percpu.o
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obj-$(CONFIG_X86_MPPARSE) += mpparse.o
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obj-y += apic/
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obj-$(CONFIG_X86_REBOOTFIXUPS) += reboot_fixups_32.o
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obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
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obj-$(CONFIG_LIVEPATCH) += livepatch.o
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obj-$(CONFIG_FUNCTION_TRACER) += ftrace_$(BITS).o
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obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
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obj-$(CONFIG_FTRACE_SYSCALLS) += ftrace.o
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obj-$(CONFIG_X86_TSC) += trace_clock.o
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obj-$(CONFIG_KEXEC_CORE) += machine_kexec_$(BITS).o
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obj-$(CONFIG_KEXEC_CORE) += relocate_kernel_$(BITS).o crash.o
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obj-$(CONFIG_KEXEC_FILE) += kexec-bzimage64.o
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obj-$(CONFIG_CRASH_DUMP) += crash_dump_$(BITS).o
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obj-y += kprobes/
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obj-$(CONFIG_MODULES) += module.o
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obj-$(CONFIG_DOUBLEFAULT) += doublefault.o
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obj-$(CONFIG_KGDB) += kgdb.o
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obj-$(CONFIG_VM86) += vm86_32.o
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obj-$(CONFIG_EARLY_PRINTK) += early_printk.o
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obj-$(CONFIG_HPET_TIMER) += hpet.o
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obj-$(CONFIG_APB_TIMER) += apb_timer.o
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obj-$(CONFIG_AMD_NB) += amd_nb.o
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obj-$(CONFIG_DEBUG_NMI_SELFTEST) += nmi_selftest.o
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obj-$(CONFIG_KVM_GUEST) += kvm.o kvmclock.o
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obj-$(CONFIG_PARAVIRT) += paravirt.o paravirt_patch_$(BITS).o
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obj-$(CONFIG_PARAVIRT_SPINLOCKS)+= paravirt-spinlocks.o
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obj-$(CONFIG_PARAVIRT_CLOCK) += pvclock.o
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obj-$(CONFIG_X86_PMEM_LEGACY_DEVICE) += pmem.o
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obj-$(CONFIG_EISA) += eisa.o
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obj-$(CONFIG_PCSPKR_PLATFORM) += pcspeaker.o
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obj-$(CONFIG_X86_CHECK_BIOS_CORRUPTION) += check.o
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obj-$(CONFIG_SWIOTLB) += pci-swiotlb.o
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obj-$(CONFIG_OF) += devicetree.o
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obj-$(CONFIG_UPROBES) += uprobes.o
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obj-y += sysfb.o
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obj-$(CONFIG_X86_SYSFB) += sysfb_simplefb.o
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obj-$(CONFIG_EFI) += sysfb_efi.o
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obj-$(CONFIG_PERF_EVENTS) += perf_regs.o
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obj-$(CONFIG_TRACING) += tracepoint.o
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obj-$(CONFIG_SCHED_MC_PRIO) += itmt.o
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obj-$(CONFIG_UNWINDER_ORC) += unwind_orc.o
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obj-$(CONFIG_UNWINDER_FRAME_POINTER) += unwind_frame.o
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obj-$(CONFIG_UNWINDER_GUESS) += unwind_guess.o
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###
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# 64 bit specific files
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ifeq ($(CONFIG_X86_64),y)
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obj-$(CONFIG_AUDIT) += audit_64.o
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obj-$(CONFIG_GART_IOMMU) += amd_gart_64.o aperture_64.o
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obj-$(CONFIG_CALGARY_IOMMU) += pci-calgary_64.o tce_64.o
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obj-$(CONFIG_PCI_MMCONFIG) += mmconf-fam10h_64.o
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obj-y += vsmp_64.o
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endif
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