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	AK
1		Merged into Linux	Latest CPU core release	MAINTAINERS status	Actual support status	MMU	glibc	uclibc-ng	musl	Qemu	KVM	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	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	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	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	riscv	4.15	current	Supported	2 most	some	yes	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	--
6	s390	2.2	current	Supported	2 most	yes	yes	no	yes	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	--
7	loongarch	5.19	current	Supported	2 most	yes	yes	no	yes	yes	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	--
8	arm	2.1	2016	Odd Fixes	2 most	some	yes	yes	yes	yes	gone	yes	yes	yes	some	32	12	yes	<= 4.0	no	yes	yes	no	yes	yes	no	no	yes	yes	yes	4k	8k		RISC	general	--
9	mips	1.1	2020	Maintained	2 most	yes	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
10	arc	3.9	current	Supported	3 WIP	yes	yes	yes	no	no	no	no	wip	yes	some	32	27	yes	<= 4.0	no	yes	yes	yes	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	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	no	yes	some	32	32	gone	4.6	no	yes	yes	yes	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	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	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	no	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	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	no	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	sh	2.3	2015	Maintained	4 struggling	some	yes	yes	yes	yes	no	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
19	sparc	1.1	2019	Maintained	4 struggling	yes	yes	yes	no	yes	no	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
20	nios2	3.19	2005	Maintained	5 minimal	yes	yes	yes	no	yes	no	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
21	hexagon	3.2	current	Supported	5 minimal	yes	no	no	no	yes	no	no	no	no	no	32	33	yes	-	no	no	yes	no	yes	no	yes	no	yes	no	no	4k-256K	4k		VLIW	embedded	--	DSP
22	e2k	tbd	2018	None	6 none	yes	no	no	no	no	yes	no	no	no	no	64	all	no	tbd	no	no	yes	no	yes	no	no	no	yes						VLIW	general
23	sw_64	tbd	2022	None	6 none	yes	no	no	no	no	yes	no	no	no	no	64	all	no	tbd	no	no	yes	no	yes	no	no	no	yes	yes	yes	8k	16k		RISC	general	supercomputer	alpha clone
24	kvx	tbd	2020	None	6 none	yes	no	no	no	no	unknown	no	no	no	no	64	all	no	tbd	no	no	yes	no	yes	no	yes	no	yes	no	yes	4k, 64k	16k		VLIW	enterprise	--
25	prodigy	tbd	future	None	6 none	yes	no	no	no	no	unknown	no	no	no	no	64	all	no	tbd	no	no	no	no	yes	no	no	no	yes	no	yes				VLIW	enterprise	--
26	ia64	2.3	2012	None	6 gone	yes	yes	yes	no	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
27	h8300	2.5	1999	None	6 gone	no	no	yes	no	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	--
28	unicore32	2.6	1999	None	6 gone	yes	no	no	no	yes	no	no	no	no	no	32	all	no	-	no	no	no	no	no	no	yes	no	yes	no	yes	4k	8k		RISC	embedded	--
29	c6x	3.3	2010	None	6 gone	no	no	yes	no	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
30	nds32	4.17	2017	None	6 gone	yes	no	yes	no	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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