Palmer Dabbelt 0c34e79e52 RISC-V: Introduce sv48 support without relocatable kernel ... This patchset allows to have a single kernel for sv39 and sv48 without being relocatable. The idea comes from Arnd Bergmann who suggested to do the same as x86, that is mapping the kernel to the end of the address space, which allows the kernel to be linked at the same address for both sv39 and sv48 and then does not require to be relocated at runtime. This implements sv48 support at runtime. The kernel will try to boot with 4-level page table and will fallback to 3-level if the HW does not support it. Folding the 4th level into a 3-level page table has almost no cost at runtime. Note that kasan region had to be moved to the end of the address space since its location must be known at compile-time and then be valid for both sv39 and sv48 (and sv57 that is coming). * riscv-sv48-v3: riscv: Explicit comment about user virtual address space size riscv: Use pgtable_l4_enabled to output mmu_type in cpuinfo riscv: Implement sv48 support asm-generic: Prepare for riscv use of pud_alloc_one and pud_free riscv: Allow to dynamically define VA_BITS riscv: Introduce functions to switch pt_ops riscv: Split early kasan mapping to prepare sv48 introduction riscv: Move KASAN mapping next to the kernel mapping riscv: Get rid of MAXPHYSMEM configs Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>		2022-01-19 19:37:44 -08:00
..
bitops	asm-generic/bitops, kcsan: Add instrumentation for barriers	2021-12-09 16:42:28 -08:00
vdso	lib/vdso: Avoid highres update if clocksource is not VDSO capable	2020-02-17 20:12:17 +01:00
asm-offsets.h
asm-prototypes.h
atomic64.h	locking/atomic: delete !ARCH_ATOMIC remnants	2021-05-26 13:20:52 +02:00
atomic.h	locking/atomic: delete !ARCH_ATOMIC remnants	2021-05-26 13:20:52 +02:00
audit_change_attr.h
audit_dir_write.h
audit_read.h
audit_signal.h
audit_write.h
barrier.h	KCSAN updates for v5.17	2022-01-11 09:51:26 -08:00
bitops.h	asm-generic/bitops: Update stale comment	2020-03-06 11:06:19 +01:00
bitsperlong.h	lib: extend the scope of small_const_nbits() macro	2021-05-06 19:24:11 -07:00
bug.h	Merge branch 'akpm' (patches from Andrew)	2021-07-02 12:08:10 -07:00
bugs.h
cache.h
cacheflush.h	Add linux/cacheflush.h	2021-11-17 10:36:15 -05:00
checksum.h	unify generic instances of csum_partial_copy_nocheck()	2020-08-20 15:45:14 -04:00
cmpxchg-local.h	locking/atomic: cmpxchg: make generic a prefix	2021-05-26 13:20:50 +02:00
cmpxchg.h	locking/atomic: delete !ARCH_ATOMIC remnants	2021-05-26 13:20:52 +02:00
compat.h	compat: make linux/compat.h available everywhere	2021-07-23 14:20:24 +01:00
current.h
delay.h
device.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 428	2019-06-05 17:37:16 +02:00
div64.h	ARM: 9117/1: asm-generic: div64: Remove always-true __div64_const32_is_OK()	2021-08-20 11:39:28 +01:00
dma-mapping.h	dma-mapping: bypass indirect calls for dma-direct	2018-12-13 21:06:18 +01:00
dma.h
early_ioremap.h	mm/early_ioremap.c: remove redundant early_ioremap_shutdown()	2021-09-08 11:50:24 -07:00
emergency-restart.h
error-injection.h	asm-generic/error-injection.h: fix a spelling mistake, and a coding style issue	2021-12-17 14:12:14 +01:00
exec.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36	2019-05-24 17:27:11 +02:00
export.h	asm-generic: export: Stub EXPORT_SYMBOL with __DISABLE_EXPORTS	2021-02-03 16:42:57 +00:00
extable.h
fb.h
fixmap.h	mm: introduce common STRUCT_PAGE_MAX_SHIFT define	2018-12-14 15:05:45 -08:00
flat.h	binfmt_flat: remove the persistent argument from flat_get_addr_from_rp	2019-06-24 09:16:47 +10:00
ftrace.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500	2019-06-19 17:09:55 +02:00
futex.h	futex: Fix additional regressions	2021-12-11 23:31:51 +01:00
getorder.h	asm-generic: force inlining of get_order() to work around gcc10 poor decision	2020-12-15 22:46:15 -08:00
gpio.h	gpio: Avoid kernel.h inclusion where it's possible	2020-02-10 12:58:36 +01:00
hardirq.h	irqstat: Move declaration into asm-generic/hardirq.h	2020-11-23 10:31:06 +01:00
hugetlb.h	mm: Allow arches to provide ptep_get()	2020-06-20 22:14:53 +10:00
hw_irq.h
hyperv-tlfs.h	PCI: hv: Make the code arch neutral by adding arch specific interfaces	2022-01-12 08:21:54 -06:00
ide_iops.h
int-ll64.h
io.h	asm-generic: build fixes for v5.15	2021-10-08 11:57:54 -07:00
ioctl.h
iomap.h	parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled	2021-09-19 10:36:09 -07:00
irq_regs.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
irq_work.h
irq.h
irqflags.h
Kbuild	Rework of the X86 irq stack handling:	2021-02-24 16:32:23 -08:00
kdebug.h
kmap_size.h	mm/highmem: Provide and use CONFIG_DEBUG_KMAP_LOCAL	2020-11-24 14:42:08 +01:00
kprobes.h	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
kvm_para.h
kvm_types.h	KVM: Move x86's version of struct kvm_mmu_memory_cache to common code	2020-07-09 13:29:42 -04:00
linkage.h
local64.h
local.h
logic_io.h	logic_io instance of iounmap() needs volatile on argument	2021-12-21 21:31:08 +01:00
mcs_spinlock.h
memory_model.h	mm: remove CONFIG_DISCONTIGMEM	2021-06-29 10:53:55 -07:00
mm_hooks.h	mm: remove arch_bprm_mm_init() hook	2020-01-23 10:41:16 -08:00
mmiowb_types.h	asm-generic/mmiowb: Add generic implementation of mmiowb() tracking	2019-04-08 11:59:39 +01:00
mmiowb.h	asm-generic/mmiowb: Allow mmiowb_set_pending() when preemptible()	2020-07-17 10:02:03 +01:00
mmu_context.h	asm-generic: add generic MMU versions of mmu context functions	2020-10-26 16:45:03 +01:00
mmu.h
module.h
module.lds.h	kbuild: preprocess module linker script	2020-09-25 00:36:41 +09:00
mshyperv.h	Drivers: hv: Fix definition of hypercall input & output arg variables	2021-12-28 14:18:43 +00:00
msi.h	Generic interrupt and irqchips subsystem:	2020-12-15 15:03:31 -08:00
nommu_context.h	asm-generic: add generic MMU versions of mmu context functions	2020-10-26 16:45:03 +01:00
numa.h	numa: Move numa implementation to common code	2021-01-14 15:08:55 -08:00
page.h	c6x: remove architecture	2021-01-20 09:30:45 +01:00
param.h
parport.h
pci_iomap.h	parisc: Declare pci_iounmap() parisc version only when CONFIG_PCI enabled	2021-09-19 10:36:09 -07:00
pci.h
percpu.h	asm-generic: percpu: avoid Wshadow warning	2020-10-26 23:54:48 +00:00
pgalloc.h	asm-generic: Prepare for riscv use of pud_alloc_one and pud_free	2022-01-19 17:54:08 -08:00
pgtable_uffd.h	userfaultfd: wp: add pmd_swp_*uffd_wp() helpers	2020-04-07 10:43:39 -07:00
pgtable-nop4d.h	mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t *	2021-07-08 11:48:22 -07:00
pgtable-nopmd.h	mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t *	2021-07-08 11:48:22 -07:00
pgtable-nopud.h	mm: rename p4d_page_vaddr to p4d_pgtable and make it return pud_t *	2021-07-08 11:48:22 -07:00
preempt.h	sched/core: Initialize the idle task with preemption disabled	2021-05-12 13:01:45 +02:00
qrwlock_types.h
qrwlock.h	locking/arch: Move qrwlock.h include after qspinlock.h	2021-02-11 07:59:54 -05:00
qspinlock_types.h	locking/qspinlock: Do not include atomic.h from qspinlock_types.h	2020-07-29 16:14:19 +02:00
qspinlock.h	qspinlock: use signed temporaries for cmpxchg	2020-10-26 20:19:48 +01:00
resource.h
rwonce.h	asm/rwonce: Don't pull <asm/barrier.h> into 'asm-generic/rwonce.h'	2020-07-21 10:50:36 +01:00
seccomp.h	seccomp: Use -1 marker for end of mode 1 syscall list	2020-07-10 16:01:52 -07:00
sections.h	parisc architecture updates for kernel v5.17-rc1	2022-01-11 15:42:45 -08:00
serial.h
set_memory.h
shmparam.h	treewide: remove SPDX "WITH Linux-syscall-note" from kernel-space headers	2019-05-14 19:52:48 -07:00
signal.h
simd.h
softirq_stack.h	softirq: Move do_softirq_own_stack() to generic asm header	2021-02-10 23:34:16 +01:00
spinlock.h
statfs.h
string.h
switch_to.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 36	2019-05-24 17:27:11 +02:00
syscall.h	arch: remove unused function syscall_set_arguments()	2021-09-14 16:06:20 +02:00
syscalls.h
termios-base.h
termios.h
timex.h
tlb.h	tlb: mmu_gather: Introduce tlb_gather_mmu_fullmm()	2021-01-29 20:02:29 +01:00
tlbflush.h
topology.h	mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA	2021-06-29 10:53:55 -07:00
trace_clock.h
uaccess.h	asm-generic: uaccess: remove inline strncpy_from_user/strnlen_user	2021-07-27 23:01:13 +02:00
unaligned.h	asm-generic: simplify asm/unaligned.h	2021-05-17 13:30:29 +02:00
user.h
vermagic.h	arch: split MODULE_ARCH_VERMAGIC definitions out to <asm/vermagic.h>	2020-04-23 10:50:26 +09:00
vga.h
vmlinux.lds.h	Driver core changes for 5.16-rc1	2021-11-04 08:32:38 -07:00
vtime.h
word-at-a-time.h
xor.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 47	2019-05-24 17:27:13 +02:00