Linux architectures

	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q	R	S	T	U	V	W	X	Y	Z	AA	AB	AC	AD	AE	AF	AG	AH	AI	AJ
1		Merged into Linux	Latest CPU core release	MAINTAINERS status	Actual support status	MMU	glibc	uclibc-ng	musl	Qemu	kernel selftest	Debian	Buildroot	big-endian	word size	Missing features	llvm/clang	gcc release	OSHW	licensable	DT support	EOL announced	SMP support	highmem	generic syscalls	compat syscalls	IPC syscalls	ipc_parse_version	PCI	Page size	Stack size	unaligned access	ISA type	primary use	historic use	notes

2	x86	0.1	current	Maintained	1 full	yes	yes	yes	yes	yes	yes	yes	yes	no	32/64	2	yes	<= 4.0	no	no	some	no	yes	yes	no	yes	some	some	yes	4k	8k, 16k		CISC	general	--
3	arm64	3.7	current	Maintained	1 full	yes	yes	yes	yes	yes	yes	yes	yes	some	64	6	yes	4.8	no	yes	yes	no	yes	no	yes	yes	yes	no	yes	4k-64k	16k, 64k		RISC	general	--
4	powerpc	1.3	current	Supported	1 full	yes	yes	yes	yes	yes	yes	yes	yes	some	32/64	5	yes	<= 4.0	yes	yes	yes	no	yes	no	no	yes	no	yes	yes	4k-256k	8k, 16k		RISC	enterprise	general
5	arm	2.1	2016	Odd Fixes	2 most	some	yes	yes	yes	yes	yes	yes	yes	some	32	12	yes	<= 4.0	no	yes	yes	no	yes	yes	no	no	yes	yes	yes	4k	8k		RISC	general	--
6	riscv	4.15	current	Supported	2 most	some	yes	yes	yes	yes	some	ports	yes	no	32/64	15	yes	7	some	yes	yes	no	yes	no	yes	no	yes	no	yes	4k	8k		RISC	general	--
7	mips	1.1	2020	Maintained	2 most	yes	yes	yes	yes	yes	some	yes	yes	some	32/64	11	yes	<= 4.0	no	yes	some	no	yes	yes	no	yes	some	yes	yes	4k-64k	8k-16k		RISC	embedded	general
8	s390	2.2	current	Supported	2 most	yes	yes	no	yes	yes	some	yes	yes	yes	64	13	yes	<= 4.0	no	no	n/a	no	yes	no	no	yes	no	yes	yes	4k	16k		CISC	enterprise	--
9	loongarch	5.19	2021	Supported	3 most	yes	yes	no	no	yes	no	wip	wip	no	64		yes	12	no	yes	no	no	yes	no	yes	no	yes	no	yes	4k-64k	16k, 64k		RISC	general	--
10	arc	3.9	current	Supported	3 WIP	yes	yes	yes	no	no	no	wip	yes	some	32	27	yes	<= 4.0	no	yes	yes	no	yes	yes	yes	no	yes	no	yes	4k-16k	8k, 16k		RISC	embedded	--
11	csky	4.20	2018	Supported	3 WIP	yes	yes	yes	no	no	no	no	yes	no	32	20	yes	9	no	yes	yes	no	yes	yes	yes	no	yes	no	no	4k	8k		RISC	embedded	--
12	microblaze	2.6	current	Supported	3 WIP	yes	yes	yes	yes	yes	no	no	yes	some	32	32	gone	4.6	no	yes	yes	no	no	yes	no	no	yes	yes	yes	4k-64k	8k		RISC	embedded	--	FPGA
13	openrisc	3.1	2014	Maintained	3 WIP	yes	no	yes	yes	yes	no	gone	yes	yes	32	32	no	9	yes	yes	yes	no	yes	yes	yes	no	yes	no	no	8k	8k		RISC	embedded	--
14	xtensa	2.6	2021	Maintained	3 WIP	some	no	yes	no	yes	no	no	yes	some	32	26	no	<= 4.0	no	yes	yes	no	yes	yes	no	no	yes	yes	yes	4k	8k		RISC	embedded	--
15	m68k	1.3	2000	Maintained	3 WIP	some	yes	yes	yes	yes	some	ports	yes	yes	32	38	yes	<= 4.0	no	no	no	no	no	no	no	no	no	yes	yes	4k-8k	4k, 8k		CISC	embedded	general
16	parisc	2.3	2005	Maintained	4 struggling	yes	yes	yes	no	yes	no	ports	no	yes	32/64	28	no	<= 4.0	no	no	n/a	yes	yes	no	no	yes	yes	no	yes	4k-64k	16k, 32k		RISC	--	enterprise
17	alpha	1.1	2004	Odd Fixes	4 struggling	yes	yes	yes	no	yes	some	ports	no	no	64	37	gone	<= 4.0	no	no	n/a	yes	yes	no	no	no	yes	yes	yes	8k	16k		RISC	--	enterprise
18	ia64	2.3	2012	Orphan	4 struggling	yes	yes	yes	no	no	no	ports	no	no	64	34	gone	<= 4.0	no	no	n/a	yes	yes	no	no	no	yes	no	yes	4k-64k	32k		VLIW	--	enterprise
19	sh	2.3	2015	Maintained	4 struggling	some	yes	yes	yes	yes	no	ports	yes	some	32	24	no	<= 4.0	some	no	some	no	no	no	no	no	no	yes	yes	4k-64k	4k, 8k		RISC	--	embedded
20	sparc	1.1	2019	Maintained	4 struggling	yes	yes	yes	no	yes	some	ports	yes	yes	32/64	21	yes	<= 4.0	some	no	yes	some	yes	yes	no	yes	no	yes	yes	4k-8k	8k, 16k		RISC	enterprise	embedded
21	nios2	3.19	2005	Maintained	5 minimal	yes	yes	yes	no	yes	no	no	yes	no	32	35	gone	4.9	no	yes	yes	no	no	no	yes	no	yes	no	no	4k	8k		RISC	embedded	--	FPGA
22	hexagon	3.2	current	Supported	5 minimal	yes	no	no	no	yes	no	no	no	no	32	33	yes	-	no	no	yes	no	yes	no	yes	no	yes	no	no	4k-256K	4k		VLIW	embedded	--	DSP
23	kvx	tbd	2020	None	6 none	yes	no	no	no	no	no	no	no	no	64	all	no	tbd	no	no	yes	no	yes	no	yes	no	yes	no	yes	4k, 64k	16k		VLIW	enterprise	--
24	prodigy	tbd	2022	None	6 none	yes	no	no	no	no	no	no	no	no	64	all	no	tbd	no	no	no	no	yes	no	no	no	yes	no	yes				VLIW	enterprise	--
25	h8300	2.5	1999	None	6 gone	no	no	yes	no	no	no	no	no	yes	32	36	no	<= 4.0	no	no	yes	no	yes	no	yes	no	yes	no	no	-	8k		RISC	embedded	--
26	unicore32	2.6	1999	None	6 gone	yes	no	no	no	yes	no	no	no	no	32	all	no	-	no	no	no	no	no	no	yes	no	yes	no	yes	4k	8k		RISC	embedded	--
27	c6x	3.3	2010	None	6 gone	no	no	yes	no	no	no	no	no	some	32	all	no	4.7	no	no	yes	no	no	no	yes	no	yes	no	no	-	8k		VLIW	embedded	--	DSP
28	nds32	4.17	2017	None	6 gone	yes	no	yes	no	no	no	no	yes	no	32	36	no	5	no	yes	yes	no	no	yes	yes	no	yes	no	no	4k, 8k	8k-16k		RISC	embedded	--
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