Merge tag 'tag-remove-ia64' of git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux into asm-generic

Remove IA-64 architecture support

Fix the IA-64 build before removing the architecture support completely.
This makes v6.6 LTS the final Linux release with IA-64/Itanium support.

* tag 'tag-remove-ia64' of git://git.kernel.org/pub/scm/linux/kernel/git/ardb/linux:
  Documentation: Drop or replace remaining mentions of IA64
  lib/raid6: Drop IA64 support
  Documentation: Drop IA64 from feature descriptions
  kernel: Drop IA64 support from sig_fault handlers
  arch: Remove Itanium (IA-64) architecture
  acpi: Provide ia64 dummy implementation of acpi_proc_quirk_mwait_check()

Acked-by: John Paul Adrian Glaubitz <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Signed-off-by: Arnd Bergmann <[email protected]>

Author: arndb

Documentation/ABI/testing/sysfs-devices-system-cpu

@@ -354,9 +354,6 @@ Description:	Parameters for the CPU cache attributes
 			- ReadWriteAllocate:
 					both writeallocate and readallocate
 
-		attributes:
-			    LEGACY used only on IA64 and is same as write_policy
-
 		coherency_line_size:
 				     the minimum amount of data in bytes that gets
 				     transferred from memory to cache

Documentation/ABI/testing/sysfs-firmware-dmi-entries

@@ -2,7 +2,7 @@ What:		/sys/firmware/dmi/entries/
 Date:		February 2011
 Contact:	Mike Waychison <[email protected]>
 Description:
-		Many machines' firmware (x86 and ia64) export DMI /
+		Many machines' firmware (x86 and arm64) export DMI /
 		SMBIOS tables to the operating system.  Getting at this
 		information is often valuable to userland, especially in
 		cases where there are OEM extensions used.

Documentation/admin-guide/kdump/kdump.rst

@@ -17,7 +17,7 @@ You can use common commands, such as cp, scp or makedumpfile to copy
 the memory image to a dump file on the local disk, or across the network
 to a remote system.
 
-Kdump and kexec are currently supported on the x86, x86_64, ppc64, ia64,
+Kdump and kexec are currently supported on the x86, x86_64, ppc64,
 s390x, arm and arm64 architectures.
 
 When the system kernel boots, it reserves a small section of memory for
@@ -113,7 +113,7 @@ There are two possible methods of using Kdump.
 2) Or use the system kernel binary itself as dump-capture kernel and there is
    no need to build a separate dump-capture kernel. This is possible
    only with the architectures which support a relocatable kernel. As
-   of today, i386, x86_64, ppc64, ia64, arm and arm64 architectures support
+   of today, i386, x86_64, ppc64, arm and arm64 architectures support
    relocatable kernel.
 
 Building a relocatable kernel is advantageous from the point of view that
@@ -236,24 +236,6 @@ Dump-capture kernel config options (Arch Dependent, ppc64)
 
    Make and install the kernel and its modules.
 
-Dump-capture kernel config options (Arch Dependent, ia64)
-----------------------------------------------------------
-
-- No specific options are required to create a dump-capture kernel
-  for ia64, other than those specified in the arch independent section
-  above. This means that it is possible to use the system kernel
-  as a dump-capture kernel if desired.
-
-  The crashkernel region can be automatically placed by the system
-  kernel at runtime. This is done by specifying the base address as 0,
-  or omitting it all together::
-
-	crashkernel=256M@0
-
-  or::
-
-	crashkernel=256M
-
 Dump-capture kernel config options (Arch Dependent, arm)
 ----------------------------------------------------------
 
@@ -348,11 +330,6 @@ Boot into System Kernel
 
    On ppc64, use "crashkernel=128M@32M".
 
-   On ia64, 256M@256M is a generous value that typically works.
-   The region may be automatically placed on ia64, see the
-   dump-capture kernel config option notes above.
-   If use sparse memory, the size should be rounded to GRANULE boundaries.
-
    On s390x, typically use "crashkernel=xxM". The value of xx is dependent
    on the memory consumption of the kdump system. In general this is not
    dependent on the memory size of the production system.
@@ -383,10 +360,6 @@ For ppc64:
 
 	- Use vmlinux
 
-For ia64:
-
-	- Use vmlinux or vmlinuz.gz
-
 For s390x:
 
 	- Use image or bzImage
@@ -428,14 +401,10 @@ to load dump-capture kernel::
    --initrd=<initrd-for-dump-capture-kernel> \
    --append="root=<root-dev> <arch-specific-options>"
 
-Please note, that --args-linux does not need to be specified for ia64.
-It is planned to make this a no-op on that architecture, but for now
-it should be omitted
-
 Following are the arch specific command line options to be used while
 loading dump-capture kernel.
 
-For i386, x86_64 and ia64:
+For i386 and x86_64:
 
 	"1 irqpoll nr_cpus=1 reset_devices"
 

Documentation/admin-guide/kdump/vmcoreinfo.rst

@@ -413,36 +413,6 @@ of a higher page table lookup overhead, and also consumes more page
 table space per process. Used to check whether PAE was enabled in the
 crash kernel when converting virtual addresses to physical addresses.
 
-ia64
-====
-
-pgdat_list|(pgdat_list, MAX_NUMNODES)
--------------------------------------
-
-pg_data_t array storing all NUMA nodes information. MAX_NUMNODES
-indicates the number of the nodes.
-
-node_memblk|(node_memblk, NR_NODE_MEMBLKS)
-------------------------------------------
-
-List of node memory chunks. Filled when parsing the SRAT table to obtain
-information about memory nodes. NR_NODE_MEMBLKS indicates the number of
-node memory chunks.
-
-These values are used to compute the number of nodes the crashed kernel used.
-
-node_memblk_s|(node_memblk_s, start_paddr)|(node_memblk_s, size)
-----------------------------------------------------------------
-
-The size of a struct node_memblk_s and the offsets of the
-node_memblk_s's members. Used to compute the number of nodes.
-
-PGTABLE_3|PGTABLE_4
--------------------
-
-User-space tools need to know whether the crash kernel was in 3-level or
-4-level paging mode. Used to distinguish the page table.
-
 ARM64
 =====
 

Documentation/admin-guide/kernel-parameters.txt

@@ -1449,7 +1449,7 @@
 			See comment before function elanfreq_setup() in
 			arch/x86/kernel/cpu/cpufreq/elanfreq.c.
 
-	elfcorehdr=[size[KMG]@]offset[KMG] [IA64,PPC,SH,X86,S390]
+	elfcorehdr=[size[KMG]@]offset[KMG] [PPC,SH,X86,S390]
 			Specifies physical address of start of kernel core
 			image elf header and optionally the size. Generally
 			kexec loader will pass this option to capture kernel.
@@ -1512,12 +1512,6 @@
 	floppy=		[HW]
 			See Documentation/admin-guide/blockdev/floppy.rst.
 
-	force_pal_cache_flush
-			[IA-64] Avoid check_sal_cache_flush which may hang on
-			buggy SAL_CACHE_FLUSH implementations. Using this
-			parameter will force ia64_sal_cache_flush to call
-			ia64_pal_cache_flush instead of SAL_CACHE_FLUSH.
-
 	forcepae	[X86-32]
 			Forcefully enable Physical Address Extension (PAE).
 			Many Pentium M systems disable PAE but may have a

Documentation/admin-guide/mm/memory-hotplug.rst

@@ -33,7 +33,7 @@ used to expose persistent memory, other performance-differentiated memory and
 reserved memory regions as ordinary system RAM to Linux.
 
 Linux only supports memory hot(un)plug on selected 64 bit architectures, such as
-x86_64, arm64, ppc64, s390x and ia64.
+x86_64, arm64, ppc64 and s390x.
 
 Memory Hot(Un)Plug Granularity
 ------------------------------

Documentation/admin-guide/sysctl/kernel.rst

@@ -436,7 +436,7 @@ ignore-unaligned-usertrap
 
 On architectures where unaligned accesses cause traps, and where this
 feature is supported (``CONFIG_SYSCTL_ARCH_UNALIGN_NO_WARN``;
-currently, ``arc``, ``ia64`` and ``loongarch``), controls whether all
+currently, ``arc`` and ``loongarch``), controls whether all
 unaligned traps are logged.
 
 = =============================================================
@@ -445,10 +445,7 @@ unaligned traps are logged.
   setting.
 = =============================================================
 
-See also `unaligned-trap`_ and `unaligned-dump-stack`_. On ``ia64``,
-this allows system administrators to override the
-``IA64_THREAD_UAC_NOPRINT`` ``prctl`` and avoid logs being flooded.
-
+See also `unaligned-trap`_.
 
 io_uring_disabled
 =================
@@ -1538,22 +1535,6 @@ See Documentation/admin-guide/kernel-parameters.rst and
 Documentation/trace/boottime-trace.rst.
 
 
-.. _unaligned-dump-stack:
-
-unaligned-dump-stack (ia64)
-===========================
-
-When logging unaligned accesses, controls whether the stack is
-dumped.
-
-= ===================================================
-0 Do not dump the stack. This is the default setting.
-1 Dump the stack.
-= ===================================================
-
-See also `ignore-unaligned-usertrap`_.
-
-
 unaligned-trap
 ==============