Will Deacon 117737acc4 vmlinux.lds.h: CFI: Reduce alignment of jump-table to function alignment ... commit 13b0566962 upstream. Due to undocumented, hysterical raisins on x86, the CFI jump-table sections in .text are needlessly aligned to PMD_SIZE in the vmlinux linker script. When compiling a CFI-enabled arm64 kernel with a 64KiB page-size, a PMD maps 512MiB of virtual memory and so the .text section increases to a whopping 940MiB and blows the final Image up to 960MiB. Others report a link failure. Since the CFI jump-table requires only instruction alignment, reduce the alignment directives to function alignment for parity with other parts of the .text section. This reduces the size of the .text section for the aforementioned 64KiB page size arm64 kernel to 19MiB for a much more reasonable total Image size of 39MiB. Cc: Sami Tolvanen <samitolvanen@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: "Mohan Rao .vanimina" <mailtoc.mohanrao@gmail.com> Cc: Kees Cook <keescook@chromium.org> Cc: Nathan Chancellor <nathan@kernel.org> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/all/CAL_GTzigiNOMYkOPX1KDnagPhJtFNqSK=1USNbS0wUL4PW6-Uw@mail.gmail.com/ Fixes: cf68fffb66 ("add support for Clang CFI") Reviewed-by: Mark Rutland <mark.rutland@arm.com> Tested-by: Mark Rutland <mark.rutland@arm.com> Reviewed-by: Sami Tolvanen <samitolvanen@google.com> Reviewed-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20220922215715.13345-1-will@kernel.org Signed-off-by: Will Deacon <will@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-09-28 11:32:08 +02:00
..
bitops	locking/atomic: Make test_and_*_bit() ordered on failure	2022-08-25 11:45:06 +02:00
vdso	…
Kbuild	kernel: add platform_has() infrastructure	2022-06-06 08:06:00 +02:00
access_ok.h	uaccess: remove CONFIG_SET_FS	2022-02-25 09:36:06 +01:00
asm-offsets.h	…
asm-prototypes.h	…
atomic.h	locking/atomic: delete !ARCH_ATOMIC remnants	2021-05-26 13:20:52 +02:00
atomic64.h	locking/atomic: delete !ARCH_ATOMIC remnants	2021-05-26 13:20:52 +02:00
audit_change_attr.h	…
audit_dir_write.h	…
audit_read.h	…
audit_signal.h	…
audit_write.h	…
barrier.h	arm64 fixes/cleanups:	2022-01-22 09:22:10 +02:00
bitops.h	include: move find.h from asm_generic to linux	2022-01-15 08:47:31 -08:00
bitsperlong.h	lib: extend the scope of small_const_nbits() macro	2021-05-06 19:24:11 -07:00
bug.h	bug: Have __warn() prototype defined unconditionally	2022-04-26 10:59:57 +02:00
bugs.h	…
cache.h	…
cacheflush.h	Add linux/cacheflush.h	2021-11-17 10:36:15 -05:00
checksum.h	unify generic instances of csum_partial_copy_nocheck()	2020-08-20 15:45:14 -04:00
cmpxchg-local.h	locking/atomic: cmpxchg: make `generic` a prefix	2021-05-26 13:20:50 +02:00
cmpxchg.h	locking/atomic: delete !ARCH_ATOMIC remnants	2021-05-26 13:20:52 +02:00
compat.h	riscv: compat: syscall: Add compat_sys_call_table implementation	2022-04-26 13:36:25 -07:00
current.h	…
delay.h	…
device.h	…
div64.h	ARM: 9117/1: asm-generic: div64: Remove always-true __div64_const32_is_OK()	2021-08-20 11:39:28 +01:00
dma-mapping.h	…
dma.h	…
early_ioremap.h	mm/early_ioremap.c: remove redundant early_ioremap_shutdown()	2021-09-08 11:50:24 -07:00
emergency-restart.h	…
error-injection.h	asm-generic/error-injection.h: fix a spelling mistake, and a coding style issue	2021-12-17 14:12:14 +01:00
exec.h	…
export.h	kbuild: link symbol CRCs at final link, removing CONFIG_MODULE_REL_CRCS	2022-05-24 16:33:20 +09:00
extable.h	…
fb.h	…
fixmap.h	…
flat.h	…
ftrace.h	…
futex.h	futex: Fix additional regressions	2021-12-11 23:31:51 +01:00
getorder.h	asm-generic: force inlining of get_order() to work around gcc10 poor decision	2020-12-15 22:46:15 -08:00
gpio.h	…
hardirq.h	irqstat: Move declaration into asm-generic/hardirq.h	2020-11-23 10:31:06 +01:00
hugetlb.h	mm: change huge_ptep_clear_flush() to return the original pte	2022-05-13 16:48:55 -07:00
hw_irq.h	…
hyperv-tlfs.h	KVM: x86: Add checks for reserved-to-zero Hyper-V hypercall fields	2022-02-10 13:50:36 -05:00
ide_iops.h	…
int-ll64.h	…
io.h	asm-generic: remove a broken and needless ifdef conditional	2022-07-22 15:00:00 +02:00
ioctl.h	…
iomap.h	parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled	2021-09-19 10:36:09 -07:00
irq.h	…
irq_regs.h	…
irq_work.h	…
irqflags.h	…
kdebug.h	…
kmap_size.h	mm/highmem: Provide and use CONFIG_DEBUG_KMAP_LOCAL	2020-11-24 14:42:08 +01:00
kprobes.h	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
kvm_para.h	…
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
linkage.h	…
local.h	…
local64.h	…
logic_io.h	logic_io instance of iounmap() needs volatile on argument	2021-12-21 21:31:08 +01:00
mcs_spinlock.h	…
memory_model.h	mm: remove CONFIG_DISCONTIGMEM	2021-06-29 10:53:55 -07:00
mm_hooks.h	…
mmiowb.h	asm-generic/mmiowb: Allow mmiowb_set_pending() when preemptible()	2020-07-17 10:02:03 +01:00
mmiowb_types.h	…
mmu.h	…
mmu_context.h	asm-generic: add generic MMU versions of mmu context functions	2020-10-26 16:45:03 +01:00
module.h	…
module.lds.h	kbuild: preprocess module linker script	2020-09-25 00:36:41 +09:00
mshyperv.h	Drivers: hv: vmbus: Propagate VMbus coherence to each VMbus device	2022-03-29 12:12:50 +00:00
msi.h	Generic interrupt and irqchips subsystem:	2020-12-15 15:03:31 -08:00
nommu_context.h	asm-generic: add generic MMU versions of mmu context functions	2020-10-26 16:45:03 +01:00
numa.h	numa: Move numa implementation to common code	2021-01-14 15:08:55 -08:00
page.h	c6x: remove architecture	2021-01-20 09:30:45 +01:00
param.h	…
parport.h	…
pci.h	…
pci_iomap.h	parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled	2021-09-19 10:36:09 -07:00
percpu.h	asm-generic: percpu: avoid Wshadow warning	2020-10-26 23:54:48 +00:00
pgalloc.h	asm-generic: Prepare for riscv use of pud_alloc_one and pud_free	2022-01-19 17:54:08 -08:00
pgtable-nop4d.h	mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t *	2021-07-08 11:48:22 -07:00
pgtable-nopmd.h	riscv/mm: fix two page table check related issues	2022-05-19 14:08:48 -07:00
pgtable-nopud.h	mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t *	2021-07-08 11:48:22 -07:00
pgtable_uffd.h	…
platform-feature.h	kernel: add platform_has() infrastructure	2022-06-06 08:06:00 +02:00
preempt.h	sched/core: Initialize the idle task with preemption disabled	2021-05-12 13:01:45 +02:00
qrwlock.h	asm-generic changes for 5.19	2022-05-26 10:50:30 -07:00
qrwlock_types.h	locking/qrwlock: Change "queue rwlock" to "queued rwlock"	2022-05-11 16:27:04 +02:00
qspinlock.h	asm-generic: qspinlock: Indicate the use of mixed-size atomics	2022-05-11 11:49:47 -07:00
qspinlock_types.h	locking/qspinlock: Do not include atomic.h from qspinlock_types.h	2020-07-29 16:14:19 +02:00
resource.h	…
rwonce.h	asm/rwonce: Don't pull <asm/barrier.h> into 'asm-generic/rwonce.h'	2020-07-21 10:50:36 +01:00
seccomp.h	seccomp: Use -1 marker for end of mode 1 syscall list	2020-07-10 16:01:52 -07:00
sections.h	asm-generic: sections: refactor memory_intersects	2022-08-31 17:18:14 +02:00
serial.h	…
set_memory.h	…
shmparam.h	…
signal.h	…
simd.h	…
softirq_stack.h	softirq: Move do_softirq_own_stack() to generic asm header	2021-02-10 23:34:16 +01:00
spinlock.h	asm-generic: ticket-lock: New generic ticket-based spinlock	2022-05-11 11:49:38 -07:00
spinlock_types.h	asm-generic: ticket-lock: New generic ticket-based spinlock	2022-05-11 11:49:38 -07:00
statfs.h	…
string.h	…
switch_to.h	…
syscall.h	ptrace: Create ptrace_report_syscall_{entry,exit} in ptrace.h	2022-03-10 13:35:08 -06:00
syscalls.h	…
termios-base.h	…
termios.h	…
timex.h	…
tlb.h	mmu_gather: fix the CONFIG_MMU_GATHER_NO_RANGE case	2022-07-22 09:28:34 -07:00
tlbflush.h	…
topology.h	mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA	2021-06-29 10:53:55 -07:00
trace_clock.h	…
uaccess.h	uaccess: remove CONFIG_SET_FS	2022-02-25 09:36:06 +01:00
unaligned.h	asm-generic: fix __get_unaligned_be48() on 32 bit platforms	2022-04-12 16:31:38 -06:00
user.h	…
vermagic.h	arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h>	2020-04-23 10:50:26 +09:00
vga.h	…
vmlinux.lds.h	vmlinux.lds.h: CFI: Reduce alignment of jump-table to function alignment	2022-09-28 11:32:08 +02:00
vtime.h	…
word-at-a-time.h	…
xor.h	lib/xor: make xor prototypes more friendly to compiler vectorization	2022-02-11 20:39:39 +11:00