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From: Ard Biesheuvel <ardb@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: Ard Biesheuvel <ardb@kernel.org>,
	Jonathan Corbet <corbet@lwn.net>, Arnd Bergmann <arnd@arndb.de>,
	Tony Luck <tony.luck@intel.com>,
	Jessica Clarke <jrtc27@jrtc27.com>,
	John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>,
	Matthew Wilcox <willy@infradead.org>,
	Marc Zyngier <maz@kernel.org>, Guenter Roeck <linux@roeck-us.net>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	linux-ia64@vger.kernel.org
Subject: [RFC PATCH 1/5] arch: Remove Itanium (IA-64) architecture
Date: Wed, 15 Feb 2023 11:00:04 +0100	[thread overview]
Message-ID: <20230215100008.2565237-2-ardb@kernel.org> (raw)
In-Reply-To: <20230215100008.2565237-1-ardb@kernel.org>

Itanium is the original architecture for which EFI was developed, and
the way Linux supports it deviates significantly from other
architectures.

So it is anyone's guess whether the ongoing maintenance and developement
of the EFI subsystem has regressed Itanium or not - QEMU no longer
implements support for it, and so there is zero test coverage using
actual hardware.

Note that the Intel firmware team themselves already removed all IA-64
support from the Tianocore/EDK2 reference implementation of EFI in 2018,
so let's follow suit, and drop IA-64 from Linux as well.

Acked-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
 Documentation/core-api/cpu_hotplug.rst               |    6 -
 Documentation/ia64/aliasing.rst                      |  246 ---
 Documentation/ia64/efirtc.rst                        |  144 --
 Documentation/ia64/err_inject.rst                    | 1067 ---------
 Documentation/ia64/features.rst                      |    3 -
 Documentation/ia64/fsys.rst                          |  303 ---
 Documentation/ia64/ia64.rst                          |   49 -
 Documentation/ia64/index.rst                         |   19 -
 Documentation/ia64/irq-redir.rst                     |   80 -
 Documentation/ia64/mca.rst                           |  198 --
 Documentation/ia64/serial.rst                        |  165 --
 MAINTAINERS                                          |   11 -
 arch/Kconfig                                         |    1 -
 arch/ia64/Kbuild                                     |    3 -
 arch/ia64/Kconfig                                    |  410 ----
 arch/ia64/Kconfig.debug                              |   55 -
 arch/ia64/Makefile                                   |   82 -
 arch/ia64/configs/bigsur_defconfig                   |  102 -
 arch/ia64/configs/generic_defconfig                  |  206 --
 arch/ia64/configs/gensparse_defconfig                |  184 --
 arch/ia64/configs/tiger_defconfig                    |  169 --
 arch/ia64/configs/zx1_defconfig                      |  148 --
 arch/ia64/hp/common/Makefile                         |   10 -
 arch/ia64/hp/common/aml_nfw.c                        |  232 --
 arch/ia64/hp/common/sba_iommu.c                      | 2147 ------------------
 arch/ia64/include/asm/Kbuild                         |    5 -
 arch/ia64/include/asm/acenv.h                        |   49 -
 arch/ia64/include/asm/acpi-ext.h                     |   17 -
 arch/ia64/include/asm/acpi.h                         |  110 -
 arch/ia64/include/asm/agp.h                          |   27 -
 arch/ia64/include/asm/asm-offsets.h                  |    1 -
 arch/ia64/include/asm/asm-prototypes.h               |   30 -
 arch/ia64/include/asm/asmmacro.h                     |  136 --
 arch/ia64/include/asm/atomic.h                       |  223 --
 arch/ia64/include/asm/barrier.h                      |   79 -
 arch/ia64/include/asm/bitops.h                       |  453 ----
 arch/ia64/include/asm/bug.h                          |   19 -
 arch/ia64/include/asm/bugs.h                         |   20 -
 arch/ia64/include/asm/cache.h                        |   30 -
 arch/ia64/include/asm/cacheflush.h                   |   33 -
 arch/ia64/include/asm/checksum.h                     |   63 -
 arch/ia64/include/asm/clocksource.h                  |   11 -
 arch/ia64/include/asm/cmpxchg.h                      |   16 -
 arch/ia64/include/asm/cpu.h                          |   23 -
 arch/ia64/include/asm/cputime.h                      |   21 -
 arch/ia64/include/asm/current.h                      |   18 -
 arch/ia64/include/asm/cyclone.h                      |   16 -
 arch/ia64/include/asm/delay.h                        |   89 -
 arch/ia64/include/asm/device.h                       |   14 -
 arch/ia64/include/asm/div64.h                        |    1 -
 arch/ia64/include/asm/dma-mapping.h                  |   16 -
 arch/ia64/include/asm/dma.h                          |   17 -
 arch/ia64/include/asm/dmi.h                          |   15 -
 arch/ia64/include/asm/early_ioremap.h                |   11 -
 arch/ia64/include/asm/efi.h                          |   13 -
 arch/ia64/include/asm/elf.h                          |  233 --
 arch/ia64/include/asm/emergency-restart.h            |    6 -
 arch/ia64/include/asm/esi.h                          |   30 -
 arch/ia64/include/asm/exception.h                    |   23 -
 arch/ia64/include/asm/export.h                       |    3 -
 arch/ia64/include/asm/extable.h                      |   12 -
 arch/ia64/include/asm/fb.h                           |   24 -
 arch/ia64/include/asm/fpswa.h                        |   74 -
 arch/ia64/include/asm/ftrace.h                       |   28 -
 arch/ia64/include/asm/futex.h                        |  109 -
 arch/ia64/include/asm/gcc_intrin.h                   |   13 -
 arch/ia64/include/asm/hardirq.h                      |   27 -
 arch/ia64/include/asm/hugetlb.h                      |   34 -
 arch/ia64/include/asm/hw_irq.h                       |  167 --
 arch/ia64/include/asm/idle.h                         |    8 -
 arch/ia64/include/asm/intrinsics.h                   |   13 -
 arch/ia64/include/asm/io.h                           |  274 ---
 arch/ia64/include/asm/iommu.h                        |   22 -
 arch/ia64/include/asm/iosapic.h                      |  106 -
 arch/ia64/include/asm/irq.h                          |   37 -
 arch/ia64/include/asm/irq_regs.h                     |    1 -
 arch/ia64/include/asm/irq_remapping.h                |    5 -
 arch/ia64/include/asm/irqflags.h                     |   95 -
 arch/ia64/include/asm/kdebug.h                       |   45 -
 arch/ia64/include/asm/kexec.h                        |   46 -
 arch/ia64/include/asm/kprobes.h                      |  116 -
 arch/ia64/include/asm/kregs.h                        |  166 --
 arch/ia64/include/asm/libata-portmap.h               |    9 -
 arch/ia64/include/asm/linkage.h                      |   19 -
 arch/ia64/include/asm/local.h                        |    1 -
 arch/ia64/include/asm/mca.h                          |  185 --
 arch/ia64/include/asm/mca_asm.h                      |  245 ---
 arch/ia64/include/asm/meminit.h                      |   59 -
 arch/ia64/include/asm/mman.h                         |   18 -
 arch/ia64/include/asm/mmiowb.h                       |   17 -
 arch/ia64/include/asm/mmu.h                          |   14 -
 arch/ia64/include/asm/mmu_context.h                  |  194 --
 arch/ia64/include/asm/mmzone.h                       |   35 -
 arch/ia64/include/asm/module.h                       |   35 -
 arch/ia64/include/asm/module.lds.h                   |   14 -
 arch/ia64/include/asm/msidef.h                       |   43 -
 arch/ia64/include/asm/native/inst.h                  |  119 -
 arch/ia64/include/asm/native/irq.h                   |   20 -
 arch/ia64/include/asm/native/patchlist.h             |   24 -
 arch/ia64/include/asm/nodedata.h                     |   63 -
 arch/ia64/include/asm/numa.h                         |   83 -
 arch/ia64/include/asm/page.h                         |  214 --
 arch/ia64/include/asm/pal.h                          | 1827 ---------------
 arch/ia64/include/asm/param.h                        |   18 -
 arch/ia64/include/asm/parport.h                      |   20 -
 arch/ia64/include/asm/patch.h                        |   28 -
 arch/ia64/include/asm/pci.h                          |   66 -
 arch/ia64/include/asm/percpu.h                       |   53 -
 arch/ia64/include/asm/pgalloc.h                      |   64 -
 arch/ia64/include/asm/pgtable.h                      |  520 -----
 arch/ia64/include/asm/processor.h                    |  663 ------
 arch/ia64/include/asm/ptrace.h                       |  146 --
 arch/ia64/include/asm/sal.h                          |  919 --------
 arch/ia64/include/asm/sections.h                     |   33 -
 arch/ia64/include/asm/serial.h                       |   17 -
 arch/ia64/include/asm/shmparam.h                     |   13 -
 arch/ia64/include/asm/signal.h                       |   33 -
 arch/ia64/include/asm/smp.h                          |  103 -
 arch/ia64/include/asm/sn/intr.h                      |   15 -
 arch/ia64/include/asm/sn/sn_sal.h                    |  124 --
 arch/ia64/include/asm/sparsemem.h                    |   28 -
 arch/ia64/include/asm/spinlock.h                     |  265 ---
 arch/ia64/include/asm/spinlock_types.h               |   22 -
 arch/ia64/include/asm/string.h                       |   22 -
 arch/ia64/include/asm/switch_to.h                    |   71 -
 arch/ia64/include/asm/syscall.h                      |   65 -
 arch/ia64/include/asm/thread_info.h                  |  131 --
 arch/ia64/include/asm/timex.h                        |   47 -
 arch/ia64/include/asm/tlb.h                          |   50 -
 arch/ia64/include/asm/tlbflush.h                     |  128 --
 arch/ia64/include/asm/topology.h                     |   56 -
 arch/ia64/include/asm/types.h                        |   32 -
 arch/ia64/include/asm/uaccess.h                      |  265 ---
 arch/ia64/include/asm/uncached.h                     |    9 -
 arch/ia64/include/asm/unistd.h                       |   38 -
 arch/ia64/include/asm/unwind.h                       |  234 --
 arch/ia64/include/asm/user.h                         |   53 -
 arch/ia64/include/asm/ustack.h                       |   12 -
 arch/ia64/include/asm/uv/uv.h                        |   30 -
 arch/ia64/include/asm/uv/uv_hub.h                    |  315 ---
 arch/ia64/include/asm/uv/uv_mmrs.h                   |  825 -------
 arch/ia64/include/asm/vermagic.h                     |   15 -
 arch/ia64/include/asm/vga.h                          |   26 -
 arch/ia64/include/asm/vmalloc.h                      |    4 -
 arch/ia64/include/asm/xor.h                          |   30 -
 arch/ia64/include/asm/xtp.h                          |   46 -
 arch/ia64/include/uapi/asm/Kbuild                    |    2 -
 arch/ia64/include/uapi/asm/auxvec.h                  |   14 -
 arch/ia64/include/uapi/asm/bitsperlong.h             |    9 -
 arch/ia64/include/uapi/asm/break.h                   |   23 -
 arch/ia64/include/uapi/asm/byteorder.h               |    7 -
 arch/ia64/include/uapi/asm/cmpxchg.h                 |  159 --
 arch/ia64/include/uapi/asm/fcntl.h                   |   15 -
 arch/ia64/include/uapi/asm/fpu.h                     |   67 -
 arch/ia64/include/uapi/asm/gcc_intrin.h              |  619 ------
 arch/ia64/include/uapi/asm/ia64regs.h                |  101 -
 arch/ia64/include/uapi/asm/intel_intrin.h            |  162 --
 arch/ia64/include/uapi/asm/intrinsics.h              |   86 -
 arch/ia64/include/uapi/asm/mman.h                    |   17 -
 arch/ia64/include/uapi/asm/param.h                   |   30 -
 arch/ia64/include/uapi/asm/posix_types.h             |    9 -
 arch/ia64/include/uapi/asm/ptrace.h                  |  248 ---
 arch/ia64/include/uapi/asm/ptrace_offsets.h          |  269 ---
 arch/ia64/include/uapi/asm/resource.h                |    8 -
 arch/ia64/include/uapi/asm/rse.h                     |   67 -
 arch/ia64/include/uapi/asm/setup.h                   |   25 -
 arch/ia64/include/uapi/asm/sigcontext.h              |   71 -
 arch/ia64/include/uapi/asm/siginfo.h                 |   28 -
 arch/ia64/include/uapi/asm/signal.h                  |   98 -
 arch/ia64/include/uapi/asm/stat.h                    |   52 -
 arch/ia64/include/uapi/asm/statfs.h                  |   21 -
 arch/ia64/include/uapi/asm/swab.h                    |   35 -
 arch/ia64/include/uapi/asm/types.h                   |   32 -
 arch/ia64/include/uapi/asm/ucontext.h                |   13 -
 arch/ia64/include/uapi/asm/unistd.h                  |   22 -
 arch/ia64/include/uapi/asm/ustack.h                  |   13 -
 arch/ia64/install.sh                                 |   30 -
 arch/ia64/kernel/.gitignore                          |    3 -
 arch/ia64/kernel/Makefile                            |   46 -
 arch/ia64/kernel/Makefile.gate                       |   29 -
 arch/ia64/kernel/acpi-ext.c                          |  101 -
 arch/ia64/kernel/acpi.c                              |  911 --------
 arch/ia64/kernel/asm-offsets.c                       |  289 ---
 arch/ia64/kernel/audit.c                             |   63 -
 arch/ia64/kernel/brl_emu.c                           |  217 --
 arch/ia64/kernel/crash.c                             |  266 ---
 arch/ia64/kernel/crash_dump.c                        |   27 -
 arch/ia64/kernel/cyclone.c                           |  125 --
 arch/ia64/kernel/dma-mapping.c                       |    9 -
 arch/ia64/kernel/efi.c                               | 1360 ------------
 arch/ia64/kernel/efi_stub.S                          |   87 -
 arch/ia64/kernel/elfcore.c                           |   77 -
 arch/ia64/kernel/entry.S                             | 1428 ------------
 arch/ia64/kernel/entry.h                             |   83 -
 arch/ia64/kernel/err_inject.c                        |  273 ---
 arch/ia64/kernel/esi.c                               |  193 --
 arch/ia64/kernel/esi_stub.S                          |   99 -
 arch/ia64/kernel/fsys.S                              |  837 -------
 arch/ia64/kernel/fsyscall_gtod_data.h                |   30 -
 arch/ia64/kernel/ftrace.c                            |  196 --
 arch/ia64/kernel/gate-data.S                         |    3 -
 arch/ia64/kernel/gate.S                              |  380 ----
 arch/ia64/kernel/gate.lds.S                          |  108 -
 arch/ia64/kernel/head.S                              | 1168 ----------
 arch/ia64/kernel/iosapic.c                           | 1137 ----------
 arch/ia64/kernel/irq.c                               |  181 --
 arch/ia64/kernel/irq.h                               |    3 -
 arch/ia64/kernel/irq_ia64.c                          |  645 ------
 arch/ia64/kernel/irq_lsapic.c                        |   45 -
 arch/ia64/kernel/ivt.S                               | 1689 --------------
 arch/ia64/kernel/kprobes.c                           |  911 --------
 arch/ia64/kernel/machine_kexec.c                     |  163 --
 arch/ia64/kernel/mca.c                               | 2111 ------------------
 arch/ia64/kernel/mca_asm.S                           | 1123 ----------
 arch/ia64/kernel/mca_drv.c                           |  796 -------
 arch/ia64/kernel/mca_drv.h                           |  123 --
 arch/ia64/kernel/mca_drv_asm.S                       |   56 -
 arch/ia64/kernel/minstate.h                          |  251 ---
 arch/ia64/kernel/module.c                            |  955 --------
 arch/ia64/kernel/msi_ia64.c                          |  198 --
 arch/ia64/kernel/numa.c                              |   73 -
 arch/ia64/kernel/pal.S                               |  306 ---
 arch/ia64/kernel/palinfo.c                           |  942 --------
 arch/ia64/kernel/patch.c                             |  237 --
 arch/ia64/kernel/pci-dma.c                           |   33 -
 arch/ia64/kernel/perfmon_itanium.h                   |  116 -
 arch/ia64/kernel/process.c                           |  610 -----
 arch/ia64/kernel/ptrace.c                            | 2012 -----------------
 arch/ia64/kernel/relocate_kernel.S                   |  321 ---
 arch/ia64/kernel/sal.c                               |  400 ----
 arch/ia64/kernel/salinfo.c                           |  646 ------
 arch/ia64/kernel/setup.c                             | 1082 ---------
 arch/ia64/kernel/sigframe.h                          |   26 -
 arch/ia64/kernel/signal.c                            |  412 ----
 arch/ia64/kernel/smp.c                               |  335 ---
 arch/ia64/kernel/smpboot.c                           |  839 -------
 arch/ia64/kernel/stacktrace.c                        |   40 -
 arch/ia64/kernel/sys_ia64.c                          |  197 --
 arch/ia64/kernel/syscalls/Makefile                   |   32 -
 arch/ia64/kernel/syscalls/syscall.tbl                |  373 ----
 arch/ia64/kernel/time.c                              |  462 ----
 arch/ia64/kernel/topology.c                          |  410 ----
 arch/ia64/kernel/traps.c                             |  612 ------
 arch/ia64/kernel/unaligned.c                         | 1560 -------------
 arch/ia64/kernel/uncached.c                          |  273 ---
 arch/ia64/kernel/unwind.c                            | 2320 --------------------
 arch/ia64/kernel/unwind_decoder.c                    |  460 ----
 arch/ia64/kernel/unwind_i.h                          |  165 --
 arch/ia64/kernel/vmlinux.lds.S                       |  225 --
 arch/ia64/lib/Makefile                               |   48 -
 arch/ia64/lib/checksum.c                             |  102 -
 arch/ia64/lib/clear_page.S                           |   79 -
 arch/ia64/lib/clear_user.S                           |  212 --
 arch/ia64/lib/copy_page.S                            |  101 -
 arch/ia64/lib/copy_page_mck.S                        |  188 --
 arch/ia64/lib/copy_user.S                            |  613 ------
 arch/ia64/lib/csum_partial_copy.c                    |   98 -
 arch/ia64/lib/do_csum.S                              |  324 ---
 arch/ia64/lib/flush.S                                |  120 -
 arch/ia64/lib/idiv32.S                               |   86 -
 arch/ia64/lib/idiv64.S                               |   83 -
 arch/ia64/lib/io.c                                   |   51 -
 arch/ia64/lib/ip_fast_csum.S                         |  148 --
 arch/ia64/lib/memcpy.S                               |  304 ---
 arch/ia64/lib/memcpy_mck.S                           |  659 ------
 arch/ia64/lib/memset.S                               |  365 ---
 arch/ia64/lib/strlen.S                               |  195 --
 arch/ia64/lib/strncpy_from_user.S                    |   47 -
 arch/ia64/lib/strnlen_user.S                         |   48 -
 arch/ia64/lib/xor.S                                  |  181 --
 arch/ia64/mm/Makefile                                |   11 -
 arch/ia64/mm/contig.c                                |  208 --
 arch/ia64/mm/discontig.c                             |  635 ------
 arch/ia64/mm/extable.c                               |   24 -
 arch/ia64/mm/fault.c                                 |  272 ---
 arch/ia64/mm/hugetlbpage.c                           |  186 --
 arch/ia64/mm/init.c                                  |  518 -----
 arch/ia64/mm/ioremap.c                               |  123 --
 arch/ia64/mm/numa.c                                  |   80 -
 arch/ia64/mm/tlb.c                                   |  591 -----
 arch/ia64/pci/Makefile                               |    5 -
 arch/ia64/pci/fixup.c                                |   80 -
 arch/ia64/pci/pci.c                                  |  576 -----
 arch/ia64/scripts/check-gas                          |   16 -
 arch/ia64/scripts/check-gas-asm.S                    |    2 -
 arch/ia64/scripts/check-model.c                      |    1 -
 arch/ia64/scripts/check-segrel.S                     |    5 -
 arch/ia64/scripts/check-segrel.lds                   |   13 -
 arch/ia64/scripts/check-serialize.S                  |    2 -
 arch/ia64/scripts/check-text-align.S                 |    7 -
 arch/ia64/scripts/toolchain-flags                    |   54 -
 arch/ia64/scripts/unwcheck.py                        |   65 -
 arch/ia64/uv/Makefile                                |   12 -
 arch/ia64/uv/kernel/Makefile                         |   12 -
 arch/ia64/uv/kernel/setup.c                          |  120 -
 drivers/acpi/Kconfig                                 |    6 +-
 drivers/acpi/numa/Kconfig                            |    4 +-
 drivers/acpi/osl.c                                   |    2 +-
 drivers/char/Kconfig                                 |    4 +-
 drivers/char/Makefile                                |    1 -
 drivers/char/agp/Kconfig                             |   16 +-
 drivers/char/agp/Makefile                            |    2 -
 drivers/char/agp/hp-agp.c                            |  550 -----
 drivers/char/agp/i460-agp.c                          |  659 ------
 drivers/char/hpet.c                                  |   30 -
 drivers/char/hw_random/Kconfig                       |    2 +-
 drivers/char/mem.c                                   |   12 -
 drivers/char/mspec.c                                 |  295 ---
 drivers/cpufreq/Kconfig                              |   11 -
 drivers/cpufreq/Makefile                             |    1 -
 drivers/cpufreq/ia64-acpi-cpufreq.c                  |  353 ---
 drivers/firmware/Kconfig                             |   24 -
 drivers/firmware/Makefile                            |    1 -
 drivers/firmware/efi/Kconfig                         |    6 +-
 drivers/firmware/efi/efi.c                           |   13 +-
 drivers/firmware/pcdp.c                              |  135 --
 drivers/firmware/pcdp.h                              |  108 -
 drivers/gpu/drm/drm_ioc32.c                          |    4 +-
 drivers/input/serio/i8042.h                          |    2 +-
 drivers/iommu/Kconfig                                |    4 +-
 drivers/iommu/intel/Kconfig                          |    2 +-
 drivers/media/cec/platform/Kconfig                   |    2 +-
 drivers/misc/Kconfig                                 |    2 +-
 drivers/misc/sgi-gru/gru.h                           |    4 +-
 drivers/misc/sgi-gru/gru_instructions.h              |   12 +-
 drivers/misc/sgi-gru/grufile.c                       |   72 -
 drivers/misc/sgi-gru/gruhandles.c                    |    6 -
 drivers/misc/sgi-gru/grumain.c                       |    4 -
 drivers/misc/sgi-xp/xp.h                             |    2 +-
 drivers/misc/sgi-xp/xp_uv.c                          |   24 -
 drivers/misc/sgi-xp/xpc_main.c                       |   31 -
 drivers/misc/sgi-xp/xpc_uv.c                         |   85 -
 drivers/net/ethernet/broadcom/tg3.c                  |    2 +-
 drivers/net/ethernet/brocade/bna/bnad.h              |    1 -
 drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c |    2 -
 drivers/pci/vgaarb.c                                 |    2 +-
 drivers/tty/serial/8250/Kconfig                      |    2 +-
 drivers/tty/vt/keyboard.c                            |    2 +-
 drivers/video/fbdev/Kconfig                          |    2 +-
 drivers/watchdog/Kconfig                             |    2 +-
 fs/Kconfig                                           |    2 +-
 fs/afs/main.c                                        |    2 -
 fs/xfs/xfs_ioctl32.h                                 |    2 +-
 include/linux/acpi.h                                 |    9 +-
 include/linux/efi.h                                  |    7 -
 include/linux/mm.h                                   |    2 -
 include/linux/moduleparam.h                          |    2 +-
 include/trace/events/mmflags.h                       |    2 +-
 init/Kconfig                                         |    2 +-
 kernel/cpu.c                                         |    3 -
 kernel/fork.c                                        |    2 +-
 kernel/sched/core.c                                  |   29 +-
 kernel/sysctl.c                                      |    9 -
 lib/Kconfig.debug                                    |    2 +-
 lib/decompress_unxz.c                                |    3 -
 lib/xz/Kconfig                                       |    5 -
 mm/mmap.c                                            |    6 +-
 scripts/headers_install.sh                           |    1 -
 tools/arch/ia64/include/asm/barrier.h                |   59 -
 tools/arch/ia64/include/uapi/asm/bitsperlong.h       |    9 -
 tools/arch/ia64/include/uapi/asm/mman.h              |    7 -
 usr/include/Makefile                                 |    6 -
 362 files changed, 45 insertions(+), 65193 deletions(-)

diff --git a/Documentation/core-api/cpu_hotplug.rst b/Documentation/core-api/cpu_hotplug.rst
index f75778d374884810..67eab9742753e8f8 100644
--- a/Documentation/core-api/cpu_hotplug.rst
+++ b/Documentation/core-api/cpu_hotplug.rst
@@ -40,12 +40,6 @@ Command Line Switches
   supplied here is lower than the number of physically available CPUs, then
   those CPUs can not be brought online later.
 
-``additional_cpus=n``
-  Use this to limit hotpluggable CPUs. This option sets
-  ``cpu_possible_mask = cpu_present_mask + additional_cpus``
-
-  This option is limited to the IA64 architecture.
-
 ``possible_cpus=n``
   This option sets ``possible_cpus`` bits in ``cpu_possible_mask``.
 
diff --git a/Documentation/ia64/aliasing.rst b/Documentation/ia64/aliasing.rst
deleted file mode 100644
index 36a1e1d4842b8139..0000000000000000
diff --git a/Documentation/ia64/efirtc.rst b/Documentation/ia64/efirtc.rst
deleted file mode 100644
index fd832840830152b8..0000000000000000
diff --git a/Documentation/ia64/err_inject.rst b/Documentation/ia64/err_inject.rst
deleted file mode 100644
index 900f71e93a29c5ae..0000000000000000
diff --git a/Documentation/ia64/features.rst b/Documentation/ia64/features.rst
deleted file mode 100644
index d7226fdcf5f8c003..0000000000000000
diff --git a/Documentation/ia64/fsys.rst b/Documentation/ia64/fsys.rst
deleted file mode 100644
index a702d2cc94b6300e..0000000000000000
diff --git a/Documentation/ia64/ia64.rst b/Documentation/ia64/ia64.rst
deleted file mode 100644
index b725019a94927f72..0000000000000000
diff --git a/Documentation/ia64/index.rst b/Documentation/ia64/index.rst
deleted file mode 100644
index 761f2154dfa27a30..0000000000000000
diff --git a/Documentation/ia64/irq-redir.rst b/Documentation/ia64/irq-redir.rst
deleted file mode 100644
index 6bbbbe4f73efc487..0000000000000000
diff --git a/Documentation/ia64/mca.rst b/Documentation/ia64/mca.rst
deleted file mode 100644
index 08270bba44a44313..0000000000000000
diff --git a/Documentation/ia64/serial.rst b/Documentation/ia64/serial.rst
deleted file mode 100644
index 1de70c305a7911cd..0000000000000000
diff --git a/MAINTAINERS b/MAINTAINERS
index 39ff1a7176252700..b797093f60cd048f 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -9840,12 +9840,6 @@ F:	Documentation/driver-api/i3c
 F:	drivers/i3c/
 F:	include/linux/i3c/
 
-IA64 (Itanium) PLATFORM
-L:	linux-ia64@vger.kernel.org
-S:	Orphan
-F:	Documentation/ia64/
-F:	arch/ia64/
-
 IBM Operation Panel Input Driver
 M:	Eddie James <eajames@linux.ibm.com>
 L:	linux-input@vger.kernel.org
@@ -15930,11 +15924,6 @@ L:	linux-i2c@vger.kernel.org
 S:	Maintained
 F:	drivers/i2c/muxes/i2c-mux-pca9541.c
 
-PCDP - PRIMARY CONSOLE AND DEBUG PORT
-M:	Khalid Aziz <khalid@gonehiking.org>
-S:	Maintained
-F:	drivers/firmware/pcdp.*
-
 PCI DRIVER FOR AARDVARK (Marvell Armada 3700)
 M:	Thomas Petazzoni <thomas.petazzoni@bootlin.com>
 M:	Pali Rohár <pali@kernel.org>
diff --git a/arch/Kconfig b/arch/Kconfig
index 12e3ddabac9d3be0..774448a24c511f22 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -1036,7 +1036,6 @@ config HAVE_ARCH_COMPAT_MMAP_BASES
 config PAGE_SIZE_LESS_THAN_64KB
 	def_bool y
 	depends on !ARM64_64K_PAGES
-	depends on !IA64_PAGE_SIZE_64KB
 	depends on !PAGE_SIZE_64KB
 	depends on !PARISC_PAGE_SIZE_64KB
 	depends on PAGE_SIZE_LESS_THAN_256KB
diff --git a/arch/ia64/Kbuild b/arch/ia64/Kbuild
deleted file mode 100644
index e77cc76d228cdb8c..0000000000000000
diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
deleted file mode 100644
index d7e4a24e8644cdec..0000000000000000
diff --git a/arch/ia64/Kconfig.debug b/arch/ia64/Kconfig.debug
deleted file mode 100644
index 2ce008e2d1644b84..0000000000000000
diff --git a/arch/ia64/Makefile b/arch/ia64/Makefile
deleted file mode 100644
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diff --git a/arch/ia64/configs/bigsur_defconfig b/arch/ia64/configs/bigsur_defconfig
deleted file mode 100644
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diff --git a/arch/ia64/configs/generic_defconfig b/arch/ia64/configs/generic_defconfig
deleted file mode 100644
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diff --git a/arch/ia64/configs/gensparse_defconfig b/arch/ia64/configs/gensparse_defconfig
deleted file mode 100644
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diff --git a/arch/ia64/configs/tiger_defconfig b/arch/ia64/configs/tiger_defconfig
deleted file mode 100644
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diff --git a/arch/ia64/configs/zx1_defconfig b/arch/ia64/configs/zx1_defconfig
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diff --git a/arch/ia64/hp/common/Makefile b/arch/ia64/hp/common/Makefile
deleted file mode 100644
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diff --git a/arch/ia64/hp/common/aml_nfw.c b/arch/ia64/hp/common/aml_nfw.c
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diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/Kbuild b/arch/ia64/include/asm/Kbuild
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deleted file mode 100644
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diff --git a/arch/ia64/include/asm/acpi-ext.h b/arch/ia64/include/asm/acpi-ext.h
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/acpi.h b/arch/ia64/include/asm/acpi.h
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/asm-prototypes.h b/arch/ia64/include/asm/asm-prototypes.h
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diff --git a/arch/ia64/include/asm/asmmacro.h b/arch/ia64/include/asm/asmmacro.h
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diff --git a/arch/ia64/include/asm/atomic.h b/arch/ia64/include/asm/atomic.h
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deleted file mode 100644
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diff --git a/arch/ia64/include/asm/bitops.h b/arch/ia64/include/asm/bitops.h
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/bug.h b/arch/ia64/include/asm/bug.h
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/bugs.h b/arch/ia64/include/asm/bugs.h
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/cache.h b/arch/ia64/include/asm/cache.h
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/cacheflush.h b/arch/ia64/include/asm/cacheflush.h
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/checksum.h b/arch/ia64/include/asm/checksum.h
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diff --git a/arch/ia64/include/asm/clocksource.h b/arch/ia64/include/asm/clocksource.h
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diff --git a/arch/ia64/include/asm/cmpxchg.h b/arch/ia64/include/asm/cmpxchg.h
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/cpu.h b/arch/ia64/include/asm/cpu.h
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/cputime.h b/arch/ia64/include/asm/cputime.h
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/current.h b/arch/ia64/include/asm/current.h
deleted file mode 100644
index 86fbcc88dff2155b..0000000000000000
diff --git a/arch/ia64/include/asm/cyclone.h b/arch/ia64/include/asm/cyclone.h
deleted file mode 100644
index a481393647e9e32c..0000000000000000
diff --git a/arch/ia64/include/asm/delay.h b/arch/ia64/include/asm/delay.h
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/device.h b/arch/ia64/include/asm/device.h
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/div64.h b/arch/ia64/include/asm/div64.h
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diff --git a/arch/ia64/include/asm/dma-mapping.h b/arch/ia64/include/asm/dma-mapping.h
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index 934191b1e2e3eaa4..0000000000000000
diff --git a/arch/ia64/include/asm/efi.h b/arch/ia64/include/asm/efi.h
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diff --git a/arch/ia64/include/asm/elf.h b/arch/ia64/include/asm/elf.h
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diff --git a/arch/ia64/include/asm/esi.h b/arch/ia64/include/asm/esi.h
deleted file mode 100644
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diff --git a/arch/ia64/include/asm/exception.h b/arch/ia64/include/asm/exception.h
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diff --git a/arch/ia64/include/asm/extable.h b/arch/ia64/include/asm/extable.h
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diff --git a/arch/ia64/include/asm/ftrace.h b/arch/ia64/include/asm/ftrace.h
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diff --git a/arch/ia64/include/asm/futex.h b/arch/ia64/include/asm/futex.h
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diff --git a/arch/ia64/include/asm/gcc_intrin.h b/arch/ia64/include/asm/gcc_intrin.h
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diff --git a/arch/ia64/include/asm/hardirq.h b/arch/ia64/include/asm/hardirq.h
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diff --git a/arch/ia64/include/asm/hugetlb.h b/arch/ia64/include/asm/hugetlb.h
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diff --git a/arch/ia64/include/asm/hw_irq.h b/arch/ia64/include/asm/hw_irq.h
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diff --git a/arch/ia64/include/asm/intrinsics.h b/arch/ia64/include/asm/intrinsics.h
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diff --git a/arch/ia64/include/asm/io.h b/arch/ia64/include/asm/io.h
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diff --git a/arch/ia64/include/asm/iosapic.h b/arch/ia64/include/asm/iosapic.h
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diff --git a/arch/ia64/include/asm/irq_regs.h b/arch/ia64/include/asm/irq_regs.h
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diff --git a/arch/ia64/include/asm/libata-portmap.h b/arch/ia64/include/asm/libata-portmap.h
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diff --git a/arch/ia64/include/asm/linkage.h b/arch/ia64/include/asm/linkage.h
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diff --git a/arch/ia64/include/asm/local.h b/arch/ia64/include/asm/local.h
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diff --git a/arch/ia64/include/asm/mca.h b/arch/ia64/include/asm/mca.h
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diff --git a/arch/ia64/include/asm/mca_asm.h b/arch/ia64/include/asm/mca_asm.h
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diff --git a/arch/ia64/include/asm/meminit.h b/arch/ia64/include/asm/meminit.h
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diff --git a/arch/ia64/include/asm/mman.h b/arch/ia64/include/asm/mman.h
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diff --git a/arch/ia64/include/asm/native/irq.h b/arch/ia64/include/asm/native/irq.h
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diff --git a/arch/ia64/pci/Makefile b/arch/ia64/pci/Makefile
deleted file mode 100644
index 81ea50eeb5271606..0000000000000000
diff --git a/arch/ia64/pci/fixup.c b/arch/ia64/pci/fixup.c
deleted file mode 100644
index 2bcdd7d3a1adad58..0000000000000000
diff --git a/arch/ia64/pci/pci.c b/arch/ia64/pci/pci.c
deleted file mode 100644
index 211757e34198a352..0000000000000000
diff --git a/arch/ia64/scripts/check-gas b/arch/ia64/scripts/check-gas
deleted file mode 100755
index 787cf9b6b04a6837..0000000000000000
diff --git a/arch/ia64/scripts/check-gas-asm.S b/arch/ia64/scripts/check-gas-asm.S
deleted file mode 100644
index 010e1d227e5dbeb1..0000000000000000
diff --git a/arch/ia64/scripts/check-model.c b/arch/ia64/scripts/check-model.c
deleted file mode 100644
index e1d4e86e3d63b430..0000000000000000
diff --git a/arch/ia64/scripts/check-segrel.S b/arch/ia64/scripts/check-segrel.S
deleted file mode 100644
index 65d6378adaaaa5fb..0000000000000000
diff --git a/arch/ia64/scripts/check-segrel.lds b/arch/ia64/scripts/check-segrel.lds
deleted file mode 100644
index c385d246e45846e2..0000000000000000
diff --git a/arch/ia64/scripts/check-serialize.S b/arch/ia64/scripts/check-serialize.S
deleted file mode 100644
index 0400c106806cd58d..0000000000000000
diff --git a/arch/ia64/scripts/check-text-align.S b/arch/ia64/scripts/check-text-align.S
deleted file mode 100644
index 107fa1c88c2e115f..0000000000000000
diff --git a/arch/ia64/scripts/toolchain-flags b/arch/ia64/scripts/toolchain-flags
deleted file mode 100755
index 12dff5c981cf1cf3..0000000000000000
diff --git a/arch/ia64/scripts/unwcheck.py b/arch/ia64/scripts/unwcheck.py
deleted file mode 100644
index 9581742f0db23c21..0000000000000000
diff --git a/arch/ia64/uv/Makefile b/arch/ia64/uv/Makefile
deleted file mode 100644
index aa9f91947c492341..0000000000000000
diff --git a/arch/ia64/uv/kernel/Makefile b/arch/ia64/uv/kernel/Makefile
deleted file mode 100644
index 297196578d19d409..0000000000000000
diff --git a/arch/ia64/uv/kernel/setup.c b/arch/ia64/uv/kernel/setup.c
deleted file mode 100644
index bb025486d7912d2f..0000000000000000
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index ccbeab9500ecb003..92c0bdadf5283659 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -257,7 +257,7 @@ config ACPI_CPU_FREQ_PSS
 config ACPI_PROCESSOR_CSTATE
 	def_bool y
 	depends on ACPI_PROCESSOR
-	depends on IA64 || X86
+	depends on X86
 
 config ACPI_PROCESSOR_IDLE
 	bool
@@ -281,9 +281,9 @@ config ACPI_CPPC_LIB
 
 config ACPI_PROCESSOR
 	tristate "Processor"
-	depends on X86 || IA64 || ARM64 || LOONGARCH
+	depends on X86 || ARM64 || LOONGARCH
 	select ACPI_PROCESSOR_IDLE
-	select ACPI_CPU_FREQ_PSS if X86 || IA64 || LOONGARCH
+	select ACPI_CPU_FREQ_PSS if X86 || LOONGARCH
 	select THERMAL
 	default y
 	help
diff --git a/drivers/acpi/numa/Kconfig b/drivers/acpi/numa/Kconfig
index 39b1f34c21dfd7a8..849c2bd820b93e90 100644
--- a/drivers/acpi/numa/Kconfig
+++ b/drivers/acpi/numa/Kconfig
@@ -2,8 +2,8 @@
 config ACPI_NUMA
 	bool "NUMA support"
 	depends on NUMA
-	depends on (X86 || IA64 || ARM64 || LOONGARCH)
-	default y if IA64 || ARM64
+	depends on (X86 || ARM64 || LOONGARCH)
+	default y if ARM64
 
 config ACPI_HMAT
 	bool "ACPI Heterogeneous Memory Attribute Table Support"
diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index 3269a888fb7a97a3..23bcb6d5cfeeb082 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -276,7 +276,7 @@ acpi_map_lookup_virt(void __iomem *virt, acpi_size size)
 	return NULL;
 }
 
-#if defined(CONFIG_IA64) || defined(CONFIG_ARM64)
+#if defined(CONFIG_ARM64)
 /* ioremap will take care of cache attributes */
 #define should_use_kmap(pfn)   0
 #else
diff --git a/drivers/char/Kconfig b/drivers/char/Kconfig
index 30fe9848dac1c1dc..02189b4756d01937 100644
--- a/drivers/char/Kconfig
+++ b/drivers/char/Kconfig
@@ -349,7 +349,7 @@ config DEVPORT
 	  device is similar to /dev/mem, but for I/O ports.
 
 config HPET
-	bool "HPET - High Precision Event Timer" if (X86 || IA64)
+	bool "HPET - High Precision Event Timer" if X86
 	default n
 	depends on ACPI
 	help
@@ -378,7 +378,7 @@ config HPET_MMAP_DEFAULT
 
 config HANGCHECK_TIMER
 	tristate "Hangcheck timer"
-	depends on X86 || IA64 || PPC64 || S390
+	depends on X86 || PPC64 || S390
 	help
 	  The hangcheck-timer module detects when the system has gone
 	  out to lunch past a certain margin.  It can reboot the system
diff --git a/drivers/char/Makefile b/drivers/char/Makefile
index 1b35d1724565ebfd..9f492f8a13acf71a 100644
--- a/drivers/char/Makefile
+++ b/drivers/char/Makefile
@@ -8,7 +8,6 @@ obj-$(CONFIG_TTY_PRINTK)	+= ttyprintk.o
 obj-y				+= misc.o
 obj-$(CONFIG_ATARI_DSP56K)	+= dsp56k.o
 obj-$(CONFIG_VIRTIO_CONSOLE)	+= virtio_console.o
-obj-$(CONFIG_MSPEC)		+= mspec.o
 obj-$(CONFIG_UV_MMTIMER)	+= uv_mmtimer.o
 obj-$(CONFIG_IBM_BSR)		+= bsr.o
 
diff --git a/drivers/char/agp/Kconfig b/drivers/char/agp/Kconfig
index 4f501e4842ab391d..c47eb7bf06d46b58 100644
--- a/drivers/char/agp/Kconfig
+++ b/drivers/char/agp/Kconfig
@@ -1,7 +1,7 @@
 # SPDX-License-Identifier: GPL-2.0
 menuconfig AGP
 	tristate "/dev/agpgart (AGP Support)"
-	depends on ALPHA || IA64 || PARISC || PPC || X86
+	depends on ALPHA || PARISC || PPC || X86
 	depends on PCI
 	help
 	  AGP (Accelerated Graphics Port) is a bus system mainly used to
@@ -109,20 +109,6 @@ config AGP_VIA
 	  This option gives you AGP support for the GLX component of
 	  X on VIA MVP3/Apollo Pro chipsets.
 
-config AGP_I460
-	tristate "Intel 460GX chipset support"
-	depends on AGP && IA64
-	help
-	  This option gives you AGP GART support for the Intel 460GX chipset
-	  for IA64 processors.
-
-config AGP_HP_ZX1
-	tristate "HP ZX1 chipset AGP support"
-	depends on AGP && IA64
-	help
-	  This option gives you AGP GART support for the HP ZX1 chipset
-	  for IA64 processors.
-
 config AGP_PARISC
 	tristate "HP Quicksilver AGP support"
 	depends on AGP && PARISC && 64BIT && IOMMU_SBA
diff --git a/drivers/char/agp/Makefile b/drivers/char/agp/Makefile
index 90ed8c789e4824fb..25834557e486538c 100644
--- a/drivers/char/agp/Makefile
+++ b/drivers/char/agp/Makefile
@@ -14,9 +14,7 @@ obj-$(CONFIG_AGP_AMD)		+= amd-k7-agp.o
 obj-$(CONFIG_AGP_AMD64)		+= amd64-agp.o
 obj-$(CONFIG_AGP_ALPHA_CORE)	+= alpha-agp.o
 obj-$(CONFIG_AGP_EFFICEON)	+= efficeon-agp.o
-obj-$(CONFIG_AGP_HP_ZX1)	+= hp-agp.o
 obj-$(CONFIG_AGP_PARISC)	+= parisc-agp.o
-obj-$(CONFIG_AGP_I460)		+= i460-agp.o
 obj-$(CONFIG_AGP_INTEL)		+= intel-agp.o
 obj-$(CONFIG_INTEL_GTT)		+= intel-gtt.o
 obj-$(CONFIG_AGP_NVIDIA)	+= nvidia-agp.o
diff --git a/drivers/char/agp/hp-agp.c b/drivers/char/agp/hp-agp.c
deleted file mode 100644
index 84d9adbb62f6a7bb..0000000000000000
diff --git a/drivers/char/agp/i460-agp.c b/drivers/char/agp/i460-agp.c
deleted file mode 100644
index 15b240ea4848f1b8..0000000000000000
diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index ee71376f174b70db..3b2159416e624a6a 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -64,25 +64,6 @@
 static DEFINE_MUTEX(hpet_mutex); /* replaces BKL */
 static u32 hpet_nhpet, hpet_max_freq = HPET_USER_FREQ;
 
-/* This clocksource driver currently only works on ia64 */
-#ifdef CONFIG_IA64
-static void __iomem *hpet_mctr;
-
-static u64 read_hpet(struct clocksource *cs)
-{
-	return (u64)read_counter((void __iomem *)hpet_mctr);
-}
-
-static struct clocksource clocksource_hpet = {
-	.name		= "hpet",
-	.rating		= 250,
-	.read		= read_hpet,
-	.mask		= CLOCKSOURCE_MASK(64),
-	.flags		= CLOCK_SOURCE_IS_CONTINUOUS,
-};
-static struct clocksource *hpet_clocksource;
-#endif
-
 /* A lock for concurrent access by app and isr hpet activity. */
 static DEFINE_SPINLOCK(hpet_lock);
 
@@ -907,17 +888,6 @@ int hpet_alloc(struct hpet_data *hdp)
 
 	hpetp->hp_delta = hpet_calibrate(hpetp);
 
-/* This clocksource driver currently only works on ia64 */
-#ifdef CONFIG_IA64
-	if (!hpet_clocksource) {
-		hpet_mctr = (void __iomem *)&hpetp->hp_hpet->hpet_mc;
-		clocksource_hpet.archdata.fsys_mmio = hpet_mctr;
-		clocksource_register_hz(&clocksource_hpet, hpetp->hp_tick_freq);
-		hpetp->hp_clocksource = &clocksource_hpet;
-		hpet_clocksource = &clocksource_hpet;
-	}
-#endif
-
 	return 0;
 }
 
diff --git a/drivers/char/hw_random/Kconfig b/drivers/char/hw_random/Kconfig
index 3da8e85f8aae03c7..aa59b5c24c44c8df 100644
--- a/drivers/char/hw_random/Kconfig
+++ b/drivers/char/hw_random/Kconfig
@@ -37,7 +37,7 @@ config HW_RANDOM_TIMERIOMEM
 
 config HW_RANDOM_INTEL
 	tristate "Intel HW Random Number Generator support"
-	depends on (X86 || IA64) && PCI
+	depends on X86 && PCI
 	default HW_RANDOM
 	help
 	  This driver provides kernel-side support for the Random Number
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 83bf2a4dcb57ed84..efd29fb5417e1fd3 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -31,10 +31,6 @@
 #include <linux/uaccess.h>
 #include <linux/security.h>
 
-#ifdef CONFIG_IA64
-# include <linux/efi.h>
-#endif
-
 #define DEVMEM_MINOR	1
 #define DEVPORT_MINOR	4
 
@@ -284,13 +280,6 @@ int __weak phys_mem_access_prot_allowed(struct file *file,
 #ifdef pgprot_noncached
 static int uncached_access(struct file *file, phys_addr_t addr)
 {
-#if defined(CONFIG_IA64)
-	/*
-	 * On ia64, we ignore O_DSYNC because we cannot tolerate memory
-	 * attribute aliases.
-	 */
-	return !(efi_mem_attributes(addr) & EFI_MEMORY_WB);
-#else
 	/*
 	 * Accessing memory above the top the kernel knows about or through a
 	 * file pointer
@@ -299,7 +288,6 @@ static int uncached_access(struct file *file, phys_addr_t addr)
 	if (file->f_flags & O_DSYNC)
 		return 1;
 	return addr >= __pa(high_memory);
-#endif
 }
 #endif
 
diff --git a/drivers/char/mspec.c b/drivers/char/mspec.c
deleted file mode 100644
index f8231e2e84beccec..0000000000000000
diff --git a/drivers/cpufreq/Kconfig b/drivers/cpufreq/Kconfig
index 2a84fc63371e2ea2..faaf36c2e9a62bb7 100644
--- a/drivers/cpufreq/Kconfig
+++ b/drivers/cpufreq/Kconfig
@@ -239,17 +239,6 @@ if PPC32 || PPC64
 source "drivers/cpufreq/Kconfig.powerpc"
 endif
 
-if IA64
-config IA64_ACPI_CPUFREQ
-	tristate "ACPI Processor P-States driver"
-	depends on ACPI_PROCESSOR
-	help
-	This driver adds a CPUFreq driver which utilizes the ACPI
-	Processor Performance States.
-
-	If in doubt, say N.
-endif
-
 if MIPS
 config BMIPS_CPUFREQ
 	tristate "BMIPS CPUfreq Driver"
diff --git a/drivers/cpufreq/Makefile b/drivers/cpufreq/Makefile
index 32a7029e25ed8103..12b5c8fd20eae57e 100644
--- a/drivers/cpufreq/Makefile
+++ b/drivers/cpufreq/Makefile
@@ -109,7 +109,6 @@ obj-$(CONFIG_POWERNV_CPUFREQ)		+= powernv-cpufreq.o
 ##################################################################################
 # Other platform drivers
 obj-$(CONFIG_BMIPS_CPUFREQ)		+= bmips-cpufreq.o
-obj-$(CONFIG_IA64_ACPI_CPUFREQ)		+= ia64-acpi-cpufreq.o
 obj-$(CONFIG_LOONGSON2_CPUFREQ)		+= loongson2_cpufreq.o
 obj-$(CONFIG_LOONGSON1_CPUFREQ)		+= loongson1-cpufreq.o
 obj-$(CONFIG_SH_CPU_FREQ)		+= sh-cpufreq.o
diff --git a/drivers/cpufreq/ia64-acpi-cpufreq.c b/drivers/cpufreq/ia64-acpi-cpufreq.c
deleted file mode 100644
index c6bdc455517f856b..0000000000000000
diff --git a/drivers/firmware/Kconfig b/drivers/firmware/Kconfig
index b59e3041fd627585..a79579fea6f05ae5 100644
--- a/drivers/firmware/Kconfig
+++ b/drivers/firmware/Kconfig
@@ -77,30 +77,6 @@ config FIRMWARE_MEMMAP
 
       See also Documentation/ABI/testing/sysfs-firmware-memmap.
 
-config EFI_PCDP
-	bool "Console device selection via EFI PCDP or HCDP table"
-	depends on ACPI && EFI && IA64
-	default y if IA64
-	help
-	  If your firmware supplies the PCDP table, and you want to
-	  automatically use the primary console device it describes
-	  as the Linux console, say Y here.
-
-	  If your firmware supplies the HCDP table, and you want to
-	  use the first serial port it describes as the Linux console,
-	  say Y here.  If your EFI ConOut path contains only a UART
-	  device, it will become the console automatically.  Otherwise,
-	  you must specify the "console=hcdp" kernel boot argument.
-
-	  Neither the PCDP nor the HCDP affects naming of serial devices,
-	  so a serial console may be /dev/ttyS0, /dev/ttyS1, etc, depending
-	  on how the driver discovers devices.
-
-	  You must also enable the appropriate drivers (serial, VGA, etc.)
-
-	  See DIG64_HCDPv20_042804.pdf available from
-	  <http://www.dig64.org/specifications/> 
-
 config DMIID
     bool "Export DMI identification via sysfs to userspace"
     depends on DMI
diff --git a/drivers/firmware/Makefile b/drivers/firmware/Makefile
index 28fcddcd688fc2fd..1d1eb671d805d099 100644
--- a/drivers/firmware/Makefile
+++ b/drivers/firmware/Makefile
@@ -8,7 +8,6 @@ obj-$(CONFIG_ARM_SDE_INTERFACE)	+= arm_sdei.o
 obj-$(CONFIG_DMI)		+= dmi_scan.o
 obj-$(CONFIG_DMI_SYSFS)		+= dmi-sysfs.o
 obj-$(CONFIG_EDD)		+= edd.o
-obj-$(CONFIG_EFI_PCDP)		+= pcdp.o
 obj-$(CONFIG_DMIID)		+= dmi-id.o
 obj-$(CONFIG_INTEL_STRATIX10_SERVICE) += stratix10-svc.o
 obj-$(CONFIG_INTEL_STRATIX10_RSU)     += stratix10-rsu.o
diff --git a/drivers/firmware/efi/Kconfig b/drivers/firmware/efi/Kconfig
index 043ca31c114ebf2a..923b07690cbf0061 100644
--- a/drivers/firmware/efi/Kconfig
+++ b/drivers/firmware/efi/Kconfig
@@ -4,7 +4,7 @@ menu "EFI (Extensible Firmware Interface) Support"
 
 config EFI_ESRT
 	bool
-	depends on EFI && !IA64
+	depends on EFI
 	default y
 
 config EFI_VARS_PSTORE
@@ -123,7 +123,7 @@ config EFI_BOOTLOADER_CONTROL
 
 config EFI_CAPSULE_LOADER
 	tristate "EFI capsule loader"
-	depends on EFI && !IA64
+	depends on EFI
 	help
 	  This option exposes a loader interface "/dev/efi_capsule_loader" for
 	  users to load EFI capsules. This driver requires working runtime
@@ -224,7 +224,7 @@ config EFI_DISABLE_PCI_DMA
 
 config EFI_EARLYCON
 	def_bool y
-	depends on SERIAL_EARLYCON && !ARM && !IA64
+	depends on SERIAL_EARLYCON && !ARM
 	select FONT_SUPPORT
 	select ARCH_USE_MEMREMAP_PROT
 
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 1e0b016fdc2b1217..b30d5c3e03a9e7a4 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -144,7 +144,7 @@ static ssize_t systab_show(struct kobject *kobj,
 	if (efi.smbios != EFI_INVALID_TABLE_ADDR)
 		str += sprintf(str, "SMBIOS=0x%lx\n", efi.smbios);
 
-	if (IS_ENABLED(CONFIG_IA64) || IS_ENABLED(CONFIG_X86))
+	if (IS_ENABLED(CONFIG_X86))
 		str = efi_systab_show_arch(str);
 
 	return str - buf;
@@ -737,7 +737,6 @@ int __init efi_systab_check_header(const efi_table_hdr_t *systab_hdr,
 	return 0;
 }
 
-#ifndef CONFIG_IA64
 static const efi_char16_t *__init map_fw_vendor(unsigned long fw_vendor,
 						size_t size)
 {
@@ -753,10 +752,6 @@ static void __init unmap_fw_vendor(const void *fw_vendor, size_t size)
 {
 	early_memunmap((void *)fw_vendor, size);
 }
-#else
-#define map_fw_vendor(p, s)	__va(p)
-#define unmap_fw_vendor(v, s)
-#endif
 
 void __init efi_systab_report_header(const efi_table_hdr_t *systab_hdr,
 				     unsigned long fw_vendor)
@@ -853,11 +848,6 @@ char * __init efi_md_typeattr_format(char *buf, size_t size,
 	return buf;
 }
 
-/*
- * IA64 has a funky EFI memory map that doesn't work the same way as
- * other architectures.
- */
-#ifndef CONFIG_IA64
 /*
  * efi_mem_attributes - lookup memmap attributes for physical address
  * @phys_addr: the physical address to lookup
@@ -905,7 +895,6 @@ int efi_mem_type(unsigned long phys_addr)
 	}
 	return -EINVAL;
 }
-#endif
 
 int efi_status_to_err(efi_status_t status)
 {
diff --git a/drivers/firmware/pcdp.c b/drivers/firmware/pcdp.c
deleted file mode 100644
index 715a45442d1cfe64..0000000000000000
diff --git a/drivers/firmware/pcdp.h b/drivers/firmware/pcdp.h
deleted file mode 100644
index e02540571c524c40..0000000000000000
diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
index 5d82891c32223e4d..4414d99e02ac658b 100644
--- a/drivers/gpu/drm/drm_ioc32.c
+++ b/drivers/gpu/drm/drm_ioc32.c
@@ -945,11 +945,11 @@ static struct {
 	DRM_IOCTL32_DEF(DRM_IOCTL_SG_ALLOC, compat_drm_sg_alloc),
 	DRM_IOCTL32_DEF(DRM_IOCTL_SG_FREE, compat_drm_sg_free),
 #endif
-#if defined(CONFIG_X86) || defined(CONFIG_IA64)
+#if defined(CONFIG_X86)
 	DRM_IOCTL32_DEF(DRM_IOCTL_UPDATE_DRAW, compat_drm_update_draw),
 #endif
 	DRM_IOCTL32_DEF(DRM_IOCTL_WAIT_VBLANK, compat_drm_wait_vblank),
-#if defined(CONFIG_X86) || defined(CONFIG_IA64)
+#if defined(CONFIG_X86)
 	DRM_IOCTL32_DEF(DRM_IOCTL_MODE_ADDFB2, compat_drm_mode_addfb2),
 #endif
 };
diff --git a/drivers/input/serio/i8042.h b/drivers/input/serio/i8042.h
index adb5173372d3ee6d..5f61672d55b73aaa 100644
--- a/drivers/input/serio/i8042.h
+++ b/drivers/input/serio/i8042.h
@@ -19,7 +19,7 @@
 #include "i8042-snirm.h"
 #elif defined(CONFIG_SPARC)
 #include "i8042-sparcio.h"
-#elif defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_LOONGARCH)
+#elif defined(CONFIG_X86) || defined(CONFIG_LOONGARCH)
 #include "i8042-acpipnpio.h"
 #else
 #include "i8042-io.h"
diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
index 79707685d54a4f8f..013683ad7ecc9319 100644
--- a/drivers/iommu/Kconfig
+++ b/drivers/iommu/Kconfig
@@ -93,7 +93,7 @@ config IOMMU_DEBUGFS
 choice
 	prompt "IOMMU default domain type"
 	depends on IOMMU_API
-	default IOMMU_DEFAULT_DMA_LAZY if X86 || IA64
+	default IOMMU_DEFAULT_DMA_LAZY if X86
 	default IOMMU_DEFAULT_DMA_STRICT
 	help
 	  Choose the type of IOMMU domain used to manage DMA API usage by
@@ -148,7 +148,7 @@ config OF_IOMMU
 
 # IOMMU-agnostic DMA-mapping layer
 config IOMMU_DMA
-	def_bool ARM64 || IA64 || X86
+	def_bool ARM64 || X86
 	select DMA_OPS
 	select IOMMU_API
 	select IOMMU_IOVA
diff --git a/drivers/iommu/intel/Kconfig b/drivers/iommu/intel/Kconfig
index b7dff5092fd21c06..44205ffdcb5cc149 100644
--- a/drivers/iommu/intel/Kconfig
+++ b/drivers/iommu/intel/Kconfig
@@ -11,7 +11,7 @@ config DMAR_DEBUG
 
 config INTEL_IOMMU
 	bool "Support for Intel IOMMU using DMA Remapping Devices"
-	depends on PCI_MSI && ACPI && (X86 || IA64)
+	depends on PCI_MSI && ACPI && X86
 	select DMA_OPS
 	select IOMMU_API
 	select IOMMU_IOVA
diff --git a/drivers/media/cec/platform/Kconfig b/drivers/media/cec/platform/Kconfig
index b672d3142eb795f4..ede81fe331b0de73 100644
--- a/drivers/media/cec/platform/Kconfig
+++ b/drivers/media/cec/platform/Kconfig
@@ -99,7 +99,7 @@ config CEC_TEGRA
 
 config CEC_SECO
 	tristate "SECO Boards HDMI CEC driver"
-	depends on (X86 || IA64) || COMPILE_TEST
+	depends on X86 || COMPILE_TEST
 	depends on PCI && DMI
 	select CEC_CORE
 	select CEC_NOTIFIER
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 9947b7892bd5af61..2573dd21d0aa77d4 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -166,7 +166,7 @@ config ENCLOSURE_SERVICES
 config SGI_XP
 	tristate "Support communication between SGI SSIs"
 	depends on NET
-	depends on (IA64_SGI_UV || X86_UV) && SMP
+	depends on X86_UV && SMP
 	depends on X86_64 || BROKEN
 	select SGI_GRU if X86_64 && SMP
 	help
diff --git a/drivers/misc/sgi-gru/gru.h b/drivers/misc/sgi-gru/gru.h
index 3ad76cd18b4bb41a..6ae045037219a339 100644
--- a/drivers/misc/sgi-gru/gru.h
+++ b/drivers/misc/sgi-gru/gru.h
@@ -30,9 +30,7 @@
 /*
  * Size used to map GRU GSeg
  */
-#if defined(CONFIG_IA64)
-#define GRU_GSEG_PAGESIZE	(256 * 1024UL)
-#elif defined(CONFIG_X86_64)
+#if defined(CONFIG_X86_64)
 #define GRU_GSEG_PAGESIZE	(256 * 1024UL)		/* ZZZ 2MB ??? */
 #else
 #error "Unsupported architecture"
diff --git a/drivers/misc/sgi-gru/gru_instructions.h b/drivers/misc/sgi-gru/gru_instructions.h
index 04d5170ac1497352..da5eb9edf9ecd6bd 100644
--- a/drivers/misc/sgi-gru/gru_instructions.h
+++ b/drivers/misc/sgi-gru/gru_instructions.h
@@ -29,17 +29,7 @@ extern void gru_wait_abort_proc(void *cb);
  * Architecture dependent functions
  */
 
-#if defined(CONFIG_IA64)
-#include <linux/compiler.h>
-#include <asm/intrinsics.h>
-#define __flush_cache(p)		ia64_fc((unsigned long)p)
-/* Use volatile on IA64 to ensure ordering via st4.rel */
-#define gru_ordered_store_ulong(p, v)					\
-		do {							\
-			barrier();					\
-			*((volatile unsigned long *)(p)) = v; /* force st.rel */	\
-		} while (0)
-#elif defined(CONFIG_X86_64)
+#if defined(CONFIG_X86_64)
 #include <asm/cacheflush.h>
 #define __flush_cache(p)		clflush(p)
 #define gru_ordered_store_ulong(p, v)					\
diff --git a/drivers/misc/sgi-gru/grufile.c b/drivers/misc/sgi-gru/grufile.c
index 7ffcfc0bb58723fe..ab731678b0428b1f 100644
--- a/drivers/misc/sgi-gru/grufile.c
+++ b/drivers/misc/sgi-gru/grufile.c
@@ -337,72 +337,6 @@ static unsigned long gru_chiplet_cpu_to_mmr(int chiplet, int cpu, int *corep)
 	return mmr;
 }
 
-#ifdef CONFIG_IA64
-
-static int gru_irq_count[GRU_CHIPLETS_PER_BLADE];
-
-static void gru_noop(struct irq_data *d)
-{
-}
-
-static struct irq_chip gru_chip[GRU_CHIPLETS_PER_BLADE] = {
-	[0 ... GRU_CHIPLETS_PER_BLADE - 1] {
-		.irq_mask	= gru_noop,
-		.irq_unmask	= gru_noop,
-		.irq_ack	= gru_noop
-	}
-};
-
-static int gru_chiplet_setup_tlb_irq(int chiplet, char *irq_name,
-			irq_handler_t irq_handler, int cpu, int blade)
-{
-	unsigned long mmr;
-	int irq = IRQ_GRU + chiplet;
-	int ret, core;
-
-	mmr = gru_chiplet_cpu_to_mmr(chiplet, cpu, &core);
-	if (mmr == 0)
-		return 0;
-
-	if (gru_irq_count[chiplet] == 0) {
-		gru_chip[chiplet].name = irq_name;
-		ret = irq_set_chip(irq, &gru_chip[chiplet]);
-		if (ret) {
-			printk(KERN_ERR "%s: set_irq_chip failed, errno=%d\n",
-			       GRU_DRIVER_ID_STR, -ret);
-			return ret;
-		}
-
-		ret = request_irq(irq, irq_handler, 0, irq_name, NULL);
-		if (ret) {
-			printk(KERN_ERR "%s: request_irq failed, errno=%d\n",
-			       GRU_DRIVER_ID_STR, -ret);
-			return ret;
-		}
-	}
-	gru_irq_count[chiplet]++;
-
-	return 0;
-}
-
-static void gru_chiplet_teardown_tlb_irq(int chiplet, int cpu, int blade)
-{
-	unsigned long mmr;
-	int core, irq = IRQ_GRU + chiplet;
-
-	if (gru_irq_count[chiplet] == 0)
-		return;
-
-	mmr = gru_chiplet_cpu_to_mmr(chiplet, cpu, &core);
-	if (mmr == 0)
-		return;
-
-	if (--gru_irq_count[chiplet] == 0)
-		free_irq(irq, NULL);
-}
-
-#elif defined CONFIG_X86_64
-
 static int gru_chiplet_setup_tlb_irq(int chiplet, char *irq_name,
 			irq_handler_t irq_handler, int cpu, int blade)
 {
@@ -447,8 +381,6 @@ static void gru_chiplet_teardown_tlb_irq(int chiplet, int cpu, int blade)
 	}
 }
 
-#endif
-
 static void gru_teardown_tlb_irqs(void)
 {
 	int blade;
@@ -514,12 +446,8 @@ static int __init gru_init(void)
 	if (!gru_supported())
 		return 0;
 
-#if defined CONFIG_IA64
-	gru_start_paddr = 0xd000000000UL; /* ZZZZZZZZZZZZZZZZZZZ fixme */
-#else
 	gru_start_paddr = uv_read_local_mmr(UVH_RH_GAM_GRU_OVERLAY_CONFIG) &
 				0x7fffffffffffUL;
-#endif
 	gru_start_vaddr = __va(gru_start_paddr);
 	gru_end_paddr = gru_start_paddr + GRU_MAX_BLADES * GRU_SIZE;
 	printk(KERN_INFO "GRU space: 0x%lx - 0x%lx\n",
diff --git a/drivers/misc/sgi-gru/gruhandles.c b/drivers/misc/sgi-gru/gruhandles.c
index 1d75d5e540bc992b..695316a83b01044f 100644
--- a/drivers/misc/sgi-gru/gruhandles.c
+++ b/drivers/misc/sgi-gru/gruhandles.c
@@ -11,16 +11,10 @@
 #include "grutables.h"
 
 /* 10 sec */
-#ifdef CONFIG_IA64
-#include <asm/processor.h>
-#define GRU_OPERATION_TIMEOUT	(((cycles_t) local_cpu_data->itc_freq)*10)
-#define CLKS2NSEC(c)		((c) *1000000000 / local_cpu_data->itc_freq)
-#else
 #include <linux/sync_core.h>
 #include <asm/tsc.h>
 #define GRU_OPERATION_TIMEOUT	((cycles_t) tsc_khz*10*1000)
 #define CLKS2NSEC(c)		((c) * 1000000 / tsc_khz)
-#endif
 
 /* Extract the status field from a kernel handle */
 #define GET_MSEG_HANDLE_STATUS(h)	(((*(unsigned long *)(h)) >> 16) & 3)
diff --git a/drivers/misc/sgi-gru/grumain.c b/drivers/misc/sgi-gru/grumain.c
index 4eb4b94551390791..0f5b09e290c89981 100644
--- a/drivers/misc/sgi-gru/grumain.c
+++ b/drivers/misc/sgi-gru/grumain.c
@@ -41,16 +41,12 @@ struct device *grudev = &gru_device;
  */
 int gru_cpu_fault_map_id(void)
 {
-#ifdef CONFIG_IA64
-	return uv_blade_processor_id() % GRU_NUM_TFM;
-#else
 	int cpu = smp_processor_id();
 	int id, core;
 
 	core = uv_cpu_core_number(cpu);
 	id = core + UV_MAX_INT_CORES * uv_cpu_socket_number(cpu);
 	return id;
-#endif
 }
 
 /*--------- ASID Management -------------------------------------------
diff --git a/drivers/misc/sgi-xp/xp.h b/drivers/misc/sgi-xp/xp.h
index f1336f43d3bd13ee..3185711beb0780f2 100644
--- a/drivers/misc/sgi-xp/xp.h
+++ b/drivers/misc/sgi-xp/xp.h
@@ -16,7 +16,7 @@
 
 #include <linux/mutex.h>
 
-#if defined CONFIG_X86_UV || defined CONFIG_IA64_SGI_UV
+#if defined CONFIG_X86_UV
 #include <asm/uv/uv.h>
 #endif
 
diff --git a/drivers/misc/sgi-xp/xp_uv.c b/drivers/misc/sgi-xp/xp_uv.c
index 19fc7076af274f74..3faa7eadf679e3c2 100644
--- a/drivers/misc/sgi-xp/xp_uv.c
+++ b/drivers/misc/sgi-xp/xp_uv.c
@@ -18,8 +18,6 @@
 #include <asm/uv/uv_hub.h>
 #if defined CONFIG_X86_64
 #include <asm/uv/bios.h>
-#elif defined CONFIG_IA64_SGI_UV
-#include <asm/sn/sn_sal.h>
 #endif
 #include "../sgi-gru/grukservices.h"
 #include "xp.h"
@@ -99,17 +97,6 @@ xp_expand_memprotect_uv(unsigned long phys_addr, unsigned long size)
 			"UV_MEMPROT_ALLOW_RW) failed, ret=%d\n", ret);
 		return xpBiosError;
 	}
-
-#elif defined CONFIG_IA64_SGI_UV
-	u64 nasid_array;
-
-	ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_1,
-				   &nasid_array);
-	if (ret != 0) {
-		dev_err(xp, "sn_change_memprotect(,, "
-			"SN_MEMPROT_ACCESS_CLASS_1,) failed ret=%d\n", ret);
-		return xpSalError;
-	}
 #else
 	#error not a supported configuration
 #endif
@@ -129,17 +116,6 @@ xp_restrict_memprotect_uv(unsigned long phys_addr, unsigned long size)
 			"UV_MEMPROT_RESTRICT_ACCESS) failed, ret=%d\n", ret);
 		return xpBiosError;
 	}
-
-#elif defined CONFIG_IA64_SGI_UV
-	u64 nasid_array;
-
-	ret = sn_change_memprotect(phys_addr, size, SN_MEMPROT_ACCESS_CLASS_0,
-				   &nasid_array);
-	if (ret != 0) {
-		dev_err(xp, "sn_change_memprotect(,, "
-			"SN_MEMPROT_ACCESS_CLASS_0,) failed ret=%d\n", ret);
-		return xpSalError;
-	}
 #else
 	#error not a supported configuration
 #endif
diff --git a/drivers/misc/sgi-xp/xpc_main.c b/drivers/misc/sgi-xp/xpc_main.c
index b2c3c22fc13c1361..ea540b03a0f6e9b8 100644
--- a/drivers/misc/sgi-xp/xpc_main.c
+++ b/drivers/misc/sgi-xp/xpc_main.c
@@ -1162,36 +1162,6 @@ xpc_die_deactivate(void)
 static int
 xpc_system_die(struct notifier_block *nb, unsigned long event, void *_die_args)
 {
-#ifdef CONFIG_IA64		/* !!! temporary kludge */
-	switch (event) {
-	case DIE_MACHINE_RESTART:
-	case DIE_MACHINE_HALT:
-		xpc_die_deactivate();
-		break;
-
-	case DIE_KDEBUG_ENTER:
-		/* Should lack of heartbeat be ignored by other partitions? */
-		if (!xpc_kdebug_ignore)
-			break;
-
-		fallthrough;
-	case DIE_MCA_MONARCH_ENTER:
-	case DIE_INIT_MONARCH_ENTER:
-		xpc_arch_ops.offline_heartbeat();
-		break;
-
-	case DIE_KDEBUG_LEAVE:
-		/* Is lack of heartbeat being ignored by other partitions? */
-		if (!xpc_kdebug_ignore)
-			break;
-
-		fallthrough;
-	case DIE_MCA_MONARCH_LEAVE:
-	case DIE_INIT_MONARCH_LEAVE:
-		xpc_arch_ops.online_heartbeat();
-		break;
-	}
-#else
 	struct die_args *die_args = _die_args;
 
 	switch (event) {
@@ -1213,7 +1183,6 @@ xpc_system_die(struct notifier_block *nb, unsigned long event, void *_die_args)
 	default:
 		xpc_die_deactivate();
 	}
-#endif
 
 	return NOTIFY_DONE;
 }
diff --git a/drivers/misc/sgi-xp/xpc_uv.c b/drivers/misc/sgi-xp/xpc_uv.c
index fff522d347e33f31..2f03a7080d965235 100644
--- a/drivers/misc/sgi-xp/xpc_uv.c
+++ b/drivers/misc/sgi-xp/xpc_uv.c
@@ -24,34 +24,12 @@
 #include <linux/slab.h>
 #include <linux/numa.h>
 #include <asm/uv/uv_hub.h>
-#if defined CONFIG_X86_64
 #include <asm/uv/bios.h>
 #include <asm/uv/uv_irq.h>
-#elif defined CONFIG_IA64_SGI_UV
-#include <asm/sn/intr.h>
-#include <asm/sn/sn_sal.h>
-#endif
 #include "../sgi-gru/gru.h"
 #include "../sgi-gru/grukservices.h"
 #include "xpc.h"
 
-#if defined CONFIG_IA64_SGI_UV
-struct uv_IO_APIC_route_entry {
-	__u64	vector		:  8,
-		delivery_mode	:  3,
-		dest_mode	:  1,
-		delivery_status	:  1,
-		polarity	:  1,
-		__reserved_1	:  1,
-		trigger		:  1,
-		mask		:  1,
-		__reserved_2	: 15,
-		dest		: 32;
-};
-
-#define sn_partition_id 0
-#endif
-
 static struct xpc_heartbeat_uv *xpc_heartbeat_uv;
 
 #define XPC_ACTIVATE_MSG_SIZE_UV	(1 * GRU_CACHE_LINE_BYTES)
@@ -113,7 +91,6 @@ xpc_get_gru_mq_irq_uv(struct xpc_gru_mq_uv *mq, int cpu, char *irq_name)
 {
 	int mmr_pnode = uv_blade_to_pnode(mq->mmr_blade);
 
-#if defined CONFIG_X86_64
 	mq->irq = uv_setup_irq(irq_name, cpu, mq->mmr_blade, mq->mmr_offset,
 			UV_AFFINITY_CPU);
 	if (mq->irq < 0)
@@ -121,40 +98,13 @@ xpc_get_gru_mq_irq_uv(struct xpc_gru_mq_uv *mq, int cpu, char *irq_name)
 
 	mq->mmr_value = uv_read_global_mmr64(mmr_pnode, mq->mmr_offset);
 
-#elif defined CONFIG_IA64_SGI_UV
-	if (strcmp(irq_name, XPC_ACTIVATE_IRQ_NAME) == 0)
-		mq->irq = SGI_XPC_ACTIVATE;
-	else if (strcmp(irq_name, XPC_NOTIFY_IRQ_NAME) == 0)
-		mq->irq = SGI_XPC_NOTIFY;
-	else
-		return -EINVAL;
-
-	mq->mmr_value = (unsigned long)cpu_physical_id(cpu) << 32 | mq->irq;
-	uv_write_global_mmr64(mmr_pnode, mq->mmr_offset, mq->mmr_value);
-#else
-	#error not a supported configuration
-#endif
-
 	return 0;
 }
 
 static void
 xpc_release_gru_mq_irq_uv(struct xpc_gru_mq_uv *mq)
 {
-#if defined CONFIG_X86_64
 	uv_teardown_irq(mq->irq);
-
-#elif defined CONFIG_IA64_SGI_UV
-	int mmr_pnode;
-	unsigned long mmr_value;
-
-	mmr_pnode = uv_blade_to_pnode(mq->mmr_blade);
-	mmr_value = 1UL << 16;
-
-	uv_write_global_mmr64(mmr_pnode, mq->mmr_offset, mmr_value);
-#else
-	#error not a supported configuration
-#endif
 }
 
 static int
@@ -162,17 +112,6 @@ xpc_gru_mq_watchlist_alloc_uv(struct xpc_gru_mq_uv *mq)
 {
 	int ret;
 
-#if defined CONFIG_IA64_SGI_UV
-	int mmr_pnode = uv_blade_to_pnode(mq->mmr_blade);
-
-	ret = sn_mq_watchlist_alloc(mmr_pnode, (void *)uv_gpa(mq->address),
-				    mq->order, &mq->mmr_offset);
-	if (ret < 0) {
-		dev_err(xpc_part, "sn_mq_watchlist_alloc() failed, ret=%d\n",
-			ret);
-		return -EBUSY;
-	}
-#elif defined CONFIG_X86_64
 	ret = uv_bios_mq_watchlist_alloc(uv_gpa(mq->address),
 					 mq->order, &mq->mmr_offset);
 	if (ret < 0) {
@@ -180,9 +119,6 @@ xpc_gru_mq_watchlist_alloc_uv(struct xpc_gru_mq_uv *mq)
 			"ret=%d\n", ret);
 		return ret;
 	}
-#else
-	#error not a supported configuration
-#endif
 
 	mq->watchlist_num = ret;
 	return 0;
@@ -194,15 +130,8 @@ xpc_gru_mq_watchlist_free_uv(struct xpc_gru_mq_uv *mq)
 	int ret;
 	int mmr_pnode = uv_blade_to_pnode(mq->mmr_blade);
 
-#if defined CONFIG_X86_64
 	ret = uv_bios_mq_watchlist_free(mmr_pnode, mq->watchlist_num);
 	BUG_ON(ret != BIOS_STATUS_SUCCESS);
-#elif defined CONFIG_IA64_SGI_UV
-	ret = sn_mq_watchlist_free(mmr_pnode, mq->watchlist_num);
-	BUG_ON(ret != SALRET_OK);
-#else
-	#error not a supported configuration
-#endif
 }
 
 static struct xpc_gru_mq_uv *
@@ -786,7 +715,6 @@ xpc_get_partition_rsvd_page_pa_uv(void *buf, u64 *cookie, unsigned long *rp_pa,
 	s64 status;
 	enum xp_retval ret;
 
-#if defined CONFIG_X86_64
 	status = uv_bios_reserved_page_pa((u64)buf, cookie, (u64 *)rp_pa,
 					  (u64 *)len);
 	if (status == BIOS_STATUS_SUCCESS)
@@ -796,19 +724,6 @@ xpc_get_partition_rsvd_page_pa_uv(void *buf, u64 *cookie, unsigned long *rp_pa,
 	else
 		ret = xpBiosError;
 
-#elif defined CONFIG_IA64_SGI_UV
-	status = sn_partition_reserved_page_pa((u64)buf, cookie, rp_pa, len);
-	if (status == SALRET_OK)
-		ret = xpSuccess;
-	else if (status == SALRET_MORE_PASSES)
-		ret = xpNeedMoreInfo;
-	else
-		ret = xpSalError;
-
-#else
-	#error not a supported configuration
-#endif
-
 	return ret;
 }
 
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 58747292521d8199..f219878c4b79655c 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -17001,7 +17001,7 @@ static u32 tg3_calc_dma_bndry(struct tg3 *tp, u32 val)
 	    !tg3_flag(tp, PCI_EXPRESS))
 		goto out;
 
-#if defined(CONFIG_PPC64) || defined(CONFIG_IA64) || defined(CONFIG_PARISC)
+#if defined(CONFIG_PPC64) || defined(CONFIG_PARISC)
 	goal = BOUNDARY_MULTI_CACHELINE;
 #else
 #if defined(CONFIG_SPARC64) || defined(CONFIG_ALPHA)
diff --git a/drivers/net/ethernet/brocade/bna/bnad.h b/drivers/net/ethernet/brocade/bna/bnad.h
index 627a93ce38ab07dd..10b1e534030e628d 100644
--- a/drivers/net/ethernet/brocade/bna/bnad.h
+++ b/drivers/net/ethernet/brocade/bna/bnad.h
@@ -19,7 +19,6 @@
 #include <linux/firmware.h>
 #include <linux/if_vlan.h>
 
-/* Fix for IA64 */
 #include <asm/checksum.h>
 #include <net/ip6_checksum.h>
 
diff --git a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
index de8d54b23f738523..2e1b2d9c0f54cbfc 100644
--- a/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
+++ b/drivers/net/ethernet/qlogic/netxen/netxen_nic_main.c
@@ -234,9 +234,7 @@ static int nx_set_dma_mask(struct netxen_adapter *adapter)
 	cmask = DMA_BIT_MASK(32);
 
 	if (NX_IS_REVISION_P2(adapter->ahw.revision_id)) {
-#ifndef CONFIG_IA64
 		mask = DMA_BIT_MASK(35);
-#endif
 	} else {
 		mask = DMA_BIT_MASK(39);
 		cmask = mask;
diff --git a/drivers/pci/vgaarb.c b/drivers/pci/vgaarb.c
index f80b6ec88dc301e0..a9c2aa0ea5751dc7 100644
--- a/drivers/pci/vgaarb.c
+++ b/drivers/pci/vgaarb.c
@@ -545,7 +545,7 @@ EXPORT_SYMBOL(vga_put);
 
 static bool vga_is_firmware_default(struct pci_dev *pdev)
 {
-#if defined(CONFIG_X86) || defined(CONFIG_IA64)
+#if defined(CONFIG_X86)
 	u64 base = screen_info.lfb_base;
 	u64 size = screen_info.lfb_size;
 	u64 limit;
diff --git a/drivers/tty/serial/8250/Kconfig b/drivers/tty/serial/8250/Kconfig
index b0f62345bc846dcb..fc4acb9e323b6922 100644
--- a/drivers/tty/serial/8250/Kconfig
+++ b/drivers/tty/serial/8250/Kconfig
@@ -216,7 +216,7 @@ config SERIAL_8250_EXTENDED
 
 config SERIAL_8250_MANY_PORTS
 	bool "Support more than 4 legacy serial ports"
-	depends on SERIAL_8250_EXTENDED && !IA64
+	depends on SERIAL_8250_EXTENDED
 	help
 	  Say Y here if you have dumb serial boards other than the four
 	  standard COM 1/2/3/4 ports. This may happen if you have an AST
diff --git a/drivers/tty/vt/keyboard.c b/drivers/tty/vt/keyboard.c
index be8313cdbac360ac..218dae88ad575a0e 100644
--- a/drivers/tty/vt/keyboard.c
+++ b/drivers/tty/vt/keyboard.c
@@ -1273,7 +1273,7 @@ static void kbd_bh(struct tasklet_struct *unused)
 	}
 }
 
-#if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_ALPHA) ||\
+#if defined(CONFIG_X86) || defined(CONFIG_ALPHA) ||\
     defined(CONFIG_MIPS) || defined(CONFIG_PPC) || defined(CONFIG_SPARC) ||\
     defined(CONFIG_PARISC) || defined(CONFIG_SUPERH) ||\
     (defined(CONFIG_ARM) && defined(CONFIG_KEYBOARD_ATKBD) && !defined(CONFIG_ARCH_RPC))
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index b2bed599e6c6ea1c..834a2a615786d168 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -641,7 +641,7 @@ config FB_VESA
 
 config FB_EFI
 	bool "EFI-based Framebuffer Support"
-	depends on (FB = y) && !IA64 && EFI
+	depends on (FB = y) && EFI
 	select APERTURE_HELPERS
 	select DRM_PANEL_ORIENTATION_QUIRKS
 	select FB_CFB_FILLRECT
diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig
index 0bc40b763b065210..fe51fb2bd4947c42 100644
--- a/drivers/watchdog/Kconfig
+++ b/drivers/watchdog/Kconfig
@@ -1268,7 +1268,7 @@ config INTEL_MID_WATCHDOG
 
 config ITCO_WDT
 	tristate "Intel TCO Timer/Watchdog"
-	depends on (X86 || IA64) && PCI
+	depends on X86 && PCI
 	select WATCHDOG_CORE
 	depends on I2C || I2C=n
 	depends on MFD_INTEL_PMC_BXT || !MFD_INTEL_PMC_BXT
diff --git a/fs/Kconfig b/fs/Kconfig
index 2685a4d0d353188b..11f5dd246fce4a68 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -234,7 +234,7 @@ config ARCH_SUPPORTS_HUGETLBFS
 
 config HUGETLBFS
 	bool "HugeTLB file system support"
-	depends on X86 || IA64 || SPARC64 || ARCH_SUPPORTS_HUGETLBFS || BROKEN
+	depends on X86 || SPARC64 || ARCH_SUPPORTS_HUGETLBFS || BROKEN
 	depends on (SYSFS || SYSCTL)
 	help
 	  hugetlbfs is a filesystem backing for HugeTLB pages, based on
diff --git a/fs/afs/main.c b/fs/afs/main.c
index eae288c8d40a3b28..6425c81d07deac4d 100644
--- a/fs/afs/main.c
+++ b/fs/afs/main.c
@@ -41,8 +41,6 @@ const char afs_init_sysname[] = "arm_linux26";
 const char afs_init_sysname[] = "aarch64_linux26";
 #elif defined(CONFIG_X86_32)
 const char afs_init_sysname[] = "i386_linux26";
-#elif defined(CONFIG_IA64)
-const char afs_init_sysname[] = "ia64_linux26";
 #elif defined(CONFIG_PPC64)
 const char afs_init_sysname[] = "ppc64_linux26";
 #elif defined(CONFIG_PPC32)
diff --git a/fs/xfs/xfs_ioctl32.h b/fs/xfs/xfs_ioctl32.h
index c14852362fceab4f..052d0e888c273a3a 100644
--- a/fs/xfs/xfs_ioctl32.h
+++ b/fs/xfs/xfs_ioctl32.h
@@ -22,7 +22,7 @@
 /*
  * On intel, even if sizes match, alignment and/or padding may differ.
  */
-#if defined(CONFIG_IA64) || defined(CONFIG_X86_64)
+#if defined(CONFIG_X86_64)
 #define BROKEN_X86_ALIGNMENT
 #define __compat_packed __attribute__((packed))
 #else
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 5e6a876e17ba0794..78753513bc5cb9a9 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -270,7 +270,7 @@ void acpi_table_print_madt_entry (struct acpi_subtable_header *madt);
 /* the following numa functions are architecture-dependent */
 void acpi_numa_slit_init (struct acpi_table_slit *slit);
 
-#if defined(CONFIG_X86) || defined(CONFIG_IA64) || defined(CONFIG_LOONGARCH)
+#if defined(CONFIG_X86) || defined(CONFIG_LOONGARCH)
 void acpi_numa_processor_affinity_init (struct acpi_srat_cpu_affinity *pa);
 #else
 static inline void
@@ -1090,15 +1090,8 @@ struct acpi_s2idle_dev_ops {
 int acpi_register_lps0_dev(struct acpi_s2idle_dev_ops *arg);
 void acpi_unregister_lps0_dev(struct acpi_s2idle_dev_ops *arg);
 #endif /* CONFIG_X86 */
-#ifndef CONFIG_IA64
 void arch_reserve_mem_area(acpi_physical_address addr, size_t size);
 #else
-static inline void arch_reserve_mem_area(acpi_physical_address addr,
-					  size_t size)
-{
-}
-#endif /* CONFIG_X86 */
-#else
 #define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0)
 #endif
 
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 98598bd1d2fa5208..bdc77cc74b1accf4 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -356,13 +356,10 @@ void efi_native_runtime_setup(void);
  * where the UEFI SPEC breaks the line.
  */
 #define NULL_GUID				EFI_GUID(0x00000000, 0x0000, 0x0000,  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00)
-#define MPS_TABLE_GUID				EFI_GUID(0xeb9d2d2f, 0x2d88, 0x11d3,  0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
 #define ACPI_TABLE_GUID				EFI_GUID(0xeb9d2d30, 0x2d88, 0x11d3,  0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
 #define ACPI_20_TABLE_GUID			EFI_GUID(0x8868e871, 0xe4f1, 0x11d3,  0xbc, 0x22, 0x00, 0x80, 0xc7, 0x3c, 0x88, 0x81)
 #define SMBIOS_TABLE_GUID			EFI_GUID(0xeb9d2d31, 0x2d88, 0x11d3,  0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
 #define SMBIOS3_TABLE_GUID			EFI_GUID(0xf2fd1544, 0x9794, 0x4a2c,  0x99, 0x2e, 0xe5, 0xbb, 0xcf, 0x20, 0xe3, 0x94)
-#define SAL_SYSTEM_TABLE_GUID			EFI_GUID(0xeb9d2d32, 0x2d88, 0x11d3,  0x9a, 0x16, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
-#define HCDP_TABLE_GUID				EFI_GUID(0xf951938d, 0x620b, 0x42ef,  0x82, 0x79, 0xa8, 0x4b, 0x79, 0x61, 0x78, 0x98)
 #define UGA_IO_PROTOCOL_GUID			EFI_GUID(0x61a4d49e, 0x6f68, 0x4f1b,  0xb9, 0x22, 0xa8, 0x6e, 0xed, 0x0b, 0x07, 0xa2)
 #define EFI_GLOBAL_VARIABLE_GUID		EFI_GUID(0x8be4df61, 0x93ca, 0x11d2,  0xaa, 0x0d, 0x00, 0xe0, 0x98, 0x03, 0x2b, 0x8c)
 #define UV_SYSTEM_TABLE_GUID			EFI_GUID(0x3b13a7d4, 0x633e, 0x11dd,  0x93, 0xec, 0xda, 0x25, 0x56, 0xd8, 0x95, 0x93)
@@ -831,10 +828,6 @@ static inline int efi_range_is_wc(unsigned long start, unsigned long len)
 	return 1;
 }
 
-#ifdef CONFIG_EFI_PCDP
-extern int __init efi_setup_pcdp_console(char *);
-#endif
-
 /*
  * We play games with efi_enabled so that the compiler will, if
  * possible, remove EFI-related code altogether.
diff --git a/include/linux/mm.h b/include/linux/mm.h
index f13f20258ce9893c..97e4b34381a38625 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -347,8 +347,6 @@ extern unsigned int kobjsize(const void *objp);
 # define VM_SAO		VM_ARCH_1	/* Strong Access Ordering (powerpc) */
 #elif defined(CONFIG_PARISC)
 # define VM_GROWSUP	VM_ARCH_1
-#elif defined(CONFIG_IA64)
-# define VM_GROWSUP	VM_ARCH_1
 #elif defined(CONFIG_SPARC64)
 # define VM_SPARC_ADI	VM_ARCH_1	/* Uses ADI tag for access control */
 # define VM_ARCH_CLEAR	VM_SPARC_ADI
diff --git a/include/linux/moduleparam.h b/include/linux/moduleparam.h
index 962cd41a2cb5aff1..99e4f1f718c705ce 100644
--- a/include/linux/moduleparam.h
+++ b/include/linux/moduleparam.h
@@ -276,7 +276,7 @@ struct kparam_array
    read-only sections (which is part of respective UNIX ABI on these
    platforms). So 'const' makes no sense and even causes compile failures
    with some compilers. */
-#if defined(CONFIG_ALPHA) || defined(CONFIG_IA64) || defined(CONFIG_PPC64)
+#if defined(CONFIG_ALPHA) || defined(CONFIG_PPC64)
 #define __moduleparam_const
 #else
 #define __moduleparam_const const
diff --git a/include/trace/events/mmflags.h b/include/trace/events/mmflags.h
index 412b5a46374c036f..c00b48003f63d094 100644
--- a/include/trace/events/mmflags.h
+++ b/include/trace/events/mmflags.h
@@ -143,7 +143,7 @@ IF_HAVE_PG_SKIP_KASAN_POISON(PG_skip_kasan_poison, "skip_kasan_poison")
 #define __VM_ARCH_SPECIFIC_1 {VM_PAT,     "pat"           }
 #elif defined(CONFIG_PPC)
 #define __VM_ARCH_SPECIFIC_1 {VM_SAO,     "sao"           }
-#elif defined(CONFIG_PARISC) || defined(CONFIG_IA64)
+#elif defined(CONFIG_PARISC)
 #define __VM_ARCH_SPECIFIC_1 {VM_GROWSUP,	"growsup"	}
 #elif !defined(CONFIG_MMU)
 #define __VM_ARCH_SPECIFIC_1 {VM_MAPPED_COPY,"mappedcopy"	}
diff --git a/init/Kconfig b/init/Kconfig
index 44e90b28a30f12e8..b62319d85b198fa7 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -1775,7 +1775,7 @@ config KALLSYMS_ABSOLUTE_PERCPU
 config KALLSYMS_BASE_RELATIVE
 	bool
 	depends on KALLSYMS
-	default !IA64
+	default y
 	help
 	  Instead of emitting them as absolute values in the native word size,
 	  emit the symbol references in the kallsyms table as 32-bit entries,
diff --git a/kernel/cpu.c b/kernel/cpu.c
index 6c0a92ca6bb59c2c..14eddcc4d654f7ef 100644
--- a/kernel/cpu.c
+++ b/kernel/cpu.c
@@ -1423,9 +1423,6 @@ static int cpu_up(unsigned int cpu, enum cpuhp_state target)
 	if (!cpu_possible(cpu)) {
 		pr_err("can't online cpu %d because it is not configured as may-hotadd at boot time\n",
 		       cpu);
-#if defined(CONFIG_IA64)
-		pr_err("please check additional_cpus= boot parameter\n");
-#endif
 		return -EINVAL;
 	}
 
diff --git a/kernel/fork.c b/kernel/fork.c
index 9f7fe354189785c2..6a2475d1442f0966 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -2914,7 +2914,7 @@ static inline bool clone3_stack_valid(struct kernel_clone_args *kargs)
 		if (!access_ok((void __user *)kargs->stack, kargs->stack_size))
 			return false;
 
-#if !defined(CONFIG_STACK_GROWSUP) && !defined(CONFIG_IA64)
+#if !defined(CONFIG_STACK_GROWSUP)
 		kargs->stack += kargs->stack_size;
 #endif
 	}
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index e838feb6adc50460..285f5c3c92f13476 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -10144,9 +10144,9 @@ void normalize_rt_tasks(void)
 
 #endif /* CONFIG_MAGIC_SYSRQ */
 
-#if defined(CONFIG_IA64) || defined(CONFIG_KGDB_KDB)
+#if defined(CONFIG_KGDB_KDB)
 /*
- * These functions are only useful for the IA64 MCA handling, or kdb.
+ * These functions are only useful for kdb.
  *
  * They can only be called when the whole system has been
  * stopped - every CPU needs to be quiescent, and no scheduling
@@ -10168,30 +10168,7 @@ struct task_struct *curr_task(int cpu)
 	return cpu_curr(cpu);
 }
 
-#endif /* defined(CONFIG_IA64) || defined(CONFIG_KGDB_KDB) */
-
-#ifdef CONFIG_IA64
-/**
- * ia64_set_curr_task - set the current task for a given CPU.
- * @cpu: the processor in question.
- * @p: the task pointer to set.
- *
- * Description: This function must only be used when non-maskable interrupts
- * are serviced on a separate stack. It allows the architecture to switch the
- * notion of the current task on a CPU in a non-blocking manner. This function
- * must be called with all CPU's synchronized, and interrupts disabled, the
- * and caller must save the original value of the current task (see
- * curr_task() above) and restore that value before reenabling interrupts and
- * re-starting the system.
- *
- * ONLY VALID WHEN THE WHOLE SYSTEM IS STOPPED!
- */
-void ia64_set_curr_task(int cpu, struct task_struct *p)
-{
-	cpu_curr(cpu) = p;
-}
-
-#endif
+#endif /* defined(CONFIG_KGDB_KDB) */
 
 #ifdef CONFIG_CGROUP_SCHED
 /* task_group_lock serializes the addition/removal of task groups */
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 137d4abe3eda11a6..a2ae4f9c5c218acd 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -1961,15 +1961,6 @@ static struct ctl_table kern_table[] = {
 		.proc_handler	= proc_dointvec,
 	},
 #endif
-#ifdef CONFIG_IA64
-	{
-		.procname	= "unaligned-dump-stack",
-		.data		= &unaligned_dump_stack,
-		.maxlen		= sizeof (int),
-		.mode		= 0644,
-		.proc_handler	= proc_dointvec,
-	},
-#endif
 #ifdef CONFIG_RT_MUTEXES
 	{
 		.procname	= "max_lock_depth",
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 02ee440f7be36cab..b2b8163f1e5e3494 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -816,7 +816,7 @@ config DEBUG_KMEMLEAK_AUTO_SCAN
 
 config DEBUG_STACK_USAGE
 	bool "Stack utilization instrumentation"
-	depends on DEBUG_KERNEL && !IA64
+	depends on DEBUG_KERNEL
 	help
 	  Enables the display of the minimum amount of free stack which each
 	  task has ever had available in the sysrq-T and sysrq-P debug output.
diff --git a/lib/decompress_unxz.c b/lib/decompress_unxz.c
index 9f4262ee33a5b9cb..33017d1eb3683302 100644
--- a/lib/decompress_unxz.c
+++ b/lib/decompress_unxz.c
@@ -131,9 +131,6 @@
 #ifdef CONFIG_ARM
 #	define XZ_DEC_ARM
 #endif
-#ifdef CONFIG_IA64
-#	define XZ_DEC_IA64
-#endif
 #ifdef CONFIG_SPARC
 #	define XZ_DEC_SPARC
 #endif
diff --git a/lib/xz/Kconfig b/lib/xz/Kconfig
index adce22ac18d660b1..aef086a6bf2f3d27 100644
--- a/lib/xz/Kconfig
+++ b/lib/xz/Kconfig
@@ -19,11 +19,6 @@ config XZ_DEC_POWERPC
 	default y
 	select XZ_DEC_BCJ
 
-config XZ_DEC_IA64
-	bool "IA-64 BCJ filter decoder" if EXPERT
-	default y
-	select XZ_DEC_BCJ
-
 config XZ_DEC_ARM
 	bool "ARM BCJ filter decoder" if EXPERT
 	default y
diff --git a/mm/mmap.c b/mm/mmap.c
index 425a9349e610825f..62d7bb74c6d0f74e 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -1902,9 +1902,9 @@ static int acct_stack_growth(struct vm_area_struct *vma,
 	return 0;
 }
 
-#if defined(CONFIG_STACK_GROWSUP) || defined(CONFIG_IA64)
+#if defined(CONFIG_STACK_GROWSUP)
 /*
- * PA-RISC uses this for its stack; IA64 for its Register Backing Store.
+ * PA-RISC uses this for its stack.
  * vma is the last one with address > vma->vm_end.  Have to extend vma.
  */
 int expand_upwards(struct vm_area_struct *vma, unsigned long address)
@@ -1994,7 +1994,7 @@ int expand_upwards(struct vm_area_struct *vma, unsigned long address)
 	mas_destroy(&mas);
 	return error;
 }
-#endif /* CONFIG_STACK_GROWSUP || CONFIG_IA64 */
+#endif /* CONFIG_STACK_GROWSUP */
 
 /*
  * vma is the first one with address < vma->vm_start.  Have to extend vma.
diff --git a/scripts/headers_install.sh b/scripts/headers_install.sh
index 4041881746adef21..9c009558e7286983 100755
--- a/scripts/headers_install.sh
+++ b/scripts/headers_install.sh
@@ -76,7 +76,6 @@ arch/arc/include/uapi/asm/swab.h:CONFIG_ARC_HAS_SWAPE
 arch/arm/include/uapi/asm/ptrace.h:CONFIG_CPU_ENDIAN_BE8
 arch/hexagon/include/uapi/asm/ptrace.h:CONFIG_HEXAGON_ARCH_VERSION
 arch/hexagon/include/uapi/asm/user.h:CONFIG_HEXAGON_ARCH_VERSION
-arch/ia64/include/uapi/asm/cmpxchg.h:CONFIG_IA64_DEBUG_CMPXCHG
 arch/m68k/include/uapi/asm/ptrace.h:CONFIG_COLDFIRE
 arch/nios2/include/uapi/asm/swab.h:CONFIG_NIOS2_CI_SWAB_NO
 arch/nios2/include/uapi/asm/swab.h:CONFIG_NIOS2_CI_SWAB_SUPPORT
diff --git a/tools/arch/ia64/include/asm/barrier.h b/tools/arch/ia64/include/asm/barrier.h
deleted file mode 100644
index 6fffe56827134385..0000000000000000
diff --git a/tools/arch/ia64/include/uapi/asm/bitsperlong.h b/tools/arch/ia64/include/uapi/asm/bitsperlong.h
deleted file mode 100644
index 1146d55563db3773..0000000000000000
diff --git a/tools/arch/ia64/include/uapi/asm/mman.h b/tools/arch/ia64/include/uapi/asm/mman.h
deleted file mode 100644
index 2a19bb1db4ab6076..0000000000000000
diff --git a/usr/include/Makefile b/usr/include/Makefile
index 07796df0a295b960..338c81f1fcf310e0 100644
--- a/usr/include/Makefile
+++ b/usr/include/Makefile
@@ -59,12 +59,6 @@ ifeq ($(SRCARCH),arc)
 no-header-test += linux/bpf_perf_event.h
 endif
 
-ifeq ($(SRCARCH),ia64)
-no-header-test += asm/setup.h
-no-header-test += asm/sigcontext.h
-no-header-test += linux/if_bonding.h
-endif
-
 ifeq ($(SRCARCH),powerpc)
 no-header-test += linux/bpf_perf_event.h
 endif
-- 
2.39.1


  reply	other threads:[~2023-02-15 10:01 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-02-15 10:00 [RFC PATCH 0/5] Retire IA64/Itanium support Ard Biesheuvel
2023-02-15 10:00 ` Ard Biesheuvel [this message]
2023-02-15 16:55   ` [RFC PATCH 1/5] arch: Remove Itanium (IA-64) architecture Guenter Roeck
2023-02-15 16:58   ` Guenter Roeck
2023-02-15 16:59     ` Ard Biesheuvel
2023-02-15 10:00 ` [RFC PATCH 2/5] kernel: Drop IA64 support from sig_fault handlers Ard Biesheuvel
2023-02-15 10:19   ` Arnd Bergmann
2023-02-15 11:13     ` Arnd Bergmann
2023-02-15 11:22       ` Ard Biesheuvel
2023-02-15 12:46         ` Arnd Bergmann
2023-02-15 10:00 ` [RFC PATCH 3/5] Documentation: Drop IA64 from feature descriptions Ard Biesheuvel
2023-02-15 10:00 ` [RFC PATCH 4/5] lib/raid6: Drop IA64 support Ard Biesheuvel
2023-02-15 10:00 ` [RFC PATCH 5/5] Documentation: Drop or replace remaining mentions of IA64 Ard Biesheuvel
2023-02-15 10:17 ` [RFC PATCH 0/5] Retire IA64/Itanium support John Paul Adrian Glaubitz
2023-02-15 19:30   ` Linus Torvalds
2023-02-15 19:42     ` Luck, Tony
2023-02-15 20:08       ` Linus Torvalds
2023-02-15 23:13         ` John Paul Adrian Glaubitz
2023-02-22 21:52           ` matoro
2023-02-16  5:04         ` Mike Rapoport
2023-02-15 23:09     ` John Paul Adrian Glaubitz
2023-02-15 16:50 ` Palmer Dabbelt
2023-02-15 17:00   ` Ard Biesheuvel
2023-02-15 18:20     ` Palmer Dabbelt
2023-03-17 22:55 ` Florian Weimer
2023-05-12 14:45   ` Ard Biesheuvel
2023-05-12 14:58     ` Florian Weimer

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