3a755ebcc2
Pull Intel TDX support from Borislav Petkov: "Intel Trust Domain Extensions (TDX) support. This is the Intel version of a confidential computing solution called Trust Domain Extensions (TDX). This series adds support to run the kernel as part of a TDX guest. It provides similar guest protections to AMD's SEV-SNP like guest memory and register state encryption, memory integrity protection and a lot more. Design-wise, it differs from AMD's solution considerably: it uses a software module which runs in a special CPU mode called (Secure Arbitration Mode) SEAM. As the name suggests, this module serves as sort of an arbiter which the confidential guest calls for services it needs during its lifetime. Just like AMD's SNP set, this series reworks and streamlines certain parts of x86 arch code so that this feature can be properly accomodated" * tag 'x86_tdx_for_v5.19_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits) x86/tdx: Fix RETs in TDX asm x86/tdx: Annotate a noreturn function x86/mm: Fix spacing within memory encryption features message x86/kaslr: Fix build warning in KASLR code in boot stub Documentation/x86: Document TDX kernel architecture ACPICA: Avoid cache flush inside virtual machines x86/tdx/ioapic: Add shared bit for IOAPIC base address x86/mm: Make DMA memory shared for TD guest x86/mm/cpa: Add support for TDX shared memory x86/tdx: Make pages shared in ioremap() x86/topology: Disable CPU online/offline control for TDX guests x86/boot: Avoid #VE during boot for TDX platforms x86/boot: Set CR0.NE early and keep it set during the boot x86/acpi/x86/boot: Add multiprocessor wake-up support x86/boot: Add a trampoline for booting APs via firmware handoff x86/tdx: Wire up KVM hypercalls x86/tdx: Port I/O: Add early boot support x86/tdx: Port I/O: Add runtime hypercalls x86/boot: Port I/O: Add decompression-time support for TDX x86/boot: Port I/O: Allow to hook up alternative helpers ...
157 lines
5.5 KiB
Makefile
157 lines
5.5 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# linux/arch/x86/boot/compressed/Makefile
|
|
#
|
|
# create a compressed vmlinux image from the original vmlinux
|
|
#
|
|
# vmlinuz is:
|
|
# decompression code (*.o)
|
|
# asm globals (piggy.S), including:
|
|
# vmlinux.bin.(gz|bz2|lzma|...)
|
|
#
|
|
# vmlinux.bin is:
|
|
# vmlinux stripped of debugging and comments
|
|
# vmlinux.bin.all is:
|
|
# vmlinux.bin + vmlinux.relocs
|
|
# vmlinux.bin.(gz|bz2|lzma|...) is:
|
|
# (see scripts/Makefile.lib size_append)
|
|
# compressed vmlinux.bin.all + u32 size of vmlinux.bin.all
|
|
|
|
# Sanitizer runtimes are unavailable and cannot be linked for early boot code.
|
|
KASAN_SANITIZE := n
|
|
KCSAN_SANITIZE := n
|
|
OBJECT_FILES_NON_STANDARD := y
|
|
|
|
# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
|
|
KCOV_INSTRUMENT := n
|
|
|
|
targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \
|
|
vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4 vmlinux.bin.zst
|
|
|
|
# CLANG_FLAGS must come before any cc-disable-warning or cc-option calls in
|
|
# case of cross compiling, as it has the '--target=' flag, which is needed to
|
|
# avoid errors with '-march=i386', and future flags may depend on the target to
|
|
# be valid.
|
|
KBUILD_CFLAGS := -m$(BITS) -O2 $(CLANG_FLAGS)
|
|
KBUILD_CFLAGS += -fno-strict-aliasing -fPIE
|
|
KBUILD_CFLAGS += -Wundef
|
|
KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
|
|
cflags-$(CONFIG_X86_32) := -march=i386
|
|
cflags-$(CONFIG_X86_64) := -mcmodel=small -mno-red-zone
|
|
KBUILD_CFLAGS += $(cflags-y)
|
|
KBUILD_CFLAGS += -mno-mmx -mno-sse
|
|
KBUILD_CFLAGS += -ffreestanding -fshort-wchar
|
|
KBUILD_CFLAGS += -fno-stack-protector
|
|
KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
|
|
KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
|
|
KBUILD_CFLAGS += -Wno-pointer-sign
|
|
KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
|
|
KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
|
|
KBUILD_CFLAGS += -D__DISABLE_EXPORTS
|
|
# Disable relocation relaxation in case the link is not PIE.
|
|
KBUILD_CFLAGS += $(call as-option,-Wa$(comma)-mrelax-relocations=no)
|
|
KBUILD_CFLAGS += -include $(srctree)/include/linux/hidden.h
|
|
|
|
# sev.c indirectly inludes inat-table.h which is generated during
|
|
# compilation and stored in $(objtree). Add the directory to the includes so
|
|
# that the compiler finds it even with out-of-tree builds (make O=/some/path).
|
|
CFLAGS_sev.o += -I$(objtree)/arch/x86/lib/
|
|
|
|
KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
|
|
GCOV_PROFILE := n
|
|
UBSAN_SANITIZE :=n
|
|
|
|
KBUILD_LDFLAGS := -m elf_$(UTS_MACHINE)
|
|
KBUILD_LDFLAGS += $(call ld-option,--no-ld-generated-unwind-info)
|
|
# Compressed kernel should be built as PIE since it may be loaded at any
|
|
# address by the bootloader.
|
|
LDFLAGS_vmlinux := -pie $(call ld-option, --no-dynamic-linker)
|
|
ifdef CONFIG_LD_ORPHAN_WARN
|
|
LDFLAGS_vmlinux += --orphan-handling=warn
|
|
endif
|
|
LDFLAGS_vmlinux += -T
|
|
|
|
hostprogs := mkpiggy
|
|
HOST_EXTRACFLAGS += -I$(srctree)/tools/include
|
|
|
|
sed-voffset := -e 's/^\([0-9a-fA-F]*\) [ABCDGRSTVW] \(_text\|__bss_start\|_end\)$$/\#define VO_\2 _AC(0x\1,UL)/p'
|
|
|
|
quiet_cmd_voffset = VOFFSET $@
|
|
cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@
|
|
|
|
targets += ../voffset.h
|
|
|
|
$(obj)/../voffset.h: vmlinux FORCE
|
|
$(call if_changed,voffset)
|
|
|
|
$(obj)/misc.o: $(obj)/../voffset.h
|
|
|
|
vmlinux-objs-y := $(obj)/vmlinux.lds $(obj)/kernel_info.o $(obj)/head_$(BITS).o \
|
|
$(obj)/misc.o $(obj)/string.o $(obj)/cmdline.o $(obj)/error.o \
|
|
$(obj)/piggy.o $(obj)/cpuflags.o
|
|
|
|
vmlinux-objs-$(CONFIG_EARLY_PRINTK) += $(obj)/early_serial_console.o
|
|
vmlinux-objs-$(CONFIG_RANDOMIZE_BASE) += $(obj)/kaslr.o
|
|
ifdef CONFIG_X86_64
|
|
vmlinux-objs-y += $(obj)/ident_map_64.o
|
|
vmlinux-objs-y += $(obj)/idt_64.o $(obj)/idt_handlers_64.o
|
|
vmlinux-objs-y += $(obj)/mem_encrypt.o
|
|
vmlinux-objs-y += $(obj)/pgtable_64.o
|
|
vmlinux-objs-$(CONFIG_AMD_MEM_ENCRYPT) += $(obj)/sev.o
|
|
endif
|
|
|
|
vmlinux-objs-$(CONFIG_ACPI) += $(obj)/acpi.o
|
|
vmlinux-objs-$(CONFIG_INTEL_TDX_GUEST) += $(obj)/tdx.o $(obj)/tdcall.o
|
|
|
|
vmlinux-objs-$(CONFIG_EFI_MIXED) += $(obj)/efi_thunk_$(BITS).o
|
|
vmlinux-objs-$(CONFIG_EFI) += $(obj)/efi.o
|
|
efi-obj-$(CONFIG_EFI_STUB) = $(objtree)/drivers/firmware/efi/libstub/lib.a
|
|
|
|
$(obj)/vmlinux: $(vmlinux-objs-y) $(efi-obj-y) FORCE
|
|
$(call if_changed,ld)
|
|
|
|
OBJCOPYFLAGS_vmlinux.bin := -R .comment -S
|
|
$(obj)/vmlinux.bin: vmlinux FORCE
|
|
$(call if_changed,objcopy)
|
|
|
|
targets += $(patsubst $(obj)/%,%,$(vmlinux-objs-y)) vmlinux.bin.all vmlinux.relocs
|
|
|
|
CMD_RELOCS = arch/x86/tools/relocs
|
|
quiet_cmd_relocs = RELOCS $@
|
|
cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $<
|
|
$(obj)/vmlinux.relocs: vmlinux FORCE
|
|
$(call if_changed,relocs)
|
|
|
|
vmlinux.bin.all-y := $(obj)/vmlinux.bin
|
|
vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
|
|
|
|
$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
|
|
$(call if_changed,gzip)
|
|
$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
|
|
$(call if_changed,bzip2_with_size)
|
|
$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
|
|
$(call if_changed,lzma_with_size)
|
|
$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
|
|
$(call if_changed,xzkern_with_size)
|
|
$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
|
|
$(call if_changed,lzo_with_size)
|
|
$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
|
|
$(call if_changed,lz4_with_size)
|
|
$(obj)/vmlinux.bin.zst: $(vmlinux.bin.all-y) FORCE
|
|
$(call if_changed,zstd22_with_size)
|
|
|
|
suffix-$(CONFIG_KERNEL_GZIP) := gz
|
|
suffix-$(CONFIG_KERNEL_BZIP2) := bz2
|
|
suffix-$(CONFIG_KERNEL_LZMA) := lzma
|
|
suffix-$(CONFIG_KERNEL_XZ) := xz
|
|
suffix-$(CONFIG_KERNEL_LZO) := lzo
|
|
suffix-$(CONFIG_KERNEL_LZ4) := lz4
|
|
suffix-$(CONFIG_KERNEL_ZSTD) := zst
|
|
|
|
quiet_cmd_mkpiggy = MKPIGGY $@
|
|
cmd_mkpiggy = $(obj)/mkpiggy $< > $@
|
|
|
|
targets += piggy.S
|
|
$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
|
|
$(call if_changed,mkpiggy)
|