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
..
probes	ftrace: disable preemption when recursion locked	2021-10-27 11:21:49 -04:00
vdso	riscv/vdso: Add support for time namespaces	2021-10-04 14:16:43 -07:00
.gitignore
asm-offsets.c	ARM:	2021-11-02 11:24:14 -07:00
cacheinfo.c	drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION()	2021-09-01 10:29:10 +02:00
cpu-hotplug.c	riscv: remove cpu_stop()	2022-01-09 11:02:39 -08:00
cpu.c	riscv: Use pgtable_l4_enabled to output mmu_type in cpuinfo	2022-01-19 17:54:10 -08:00
cpu_ops.c	treewide: Convert macro and uses of __section(foo) to __section("foo")	2020-10-25 14:51:49 -07:00
cpu_ops_sbi.c
cpu_ops_spinwait.c
cpufeature.c	riscv: Add __init section marker to some functions again	2021-05-29 13:39:27 -07:00
crash_dump.c	RISC-V: Add crash kernel support	2021-04-26 08:25:24 -07:00
crash_save_regs.S	RISC-V: Add kdump support	2021-04-26 08:25:23 -07:00
efi-header.S
efi.c	RISC-V: Add EFI runtime services	2020-10-02 14:31:28 -07:00
entry.S	cpu-to-thread_info update for v5.16-rc1	2021-11-01 17:00:05 -07:00
fpu.S
ftrace.c	ftrace: Cleanup ftrace_dyn_arch_init()	2021-10-08 19:41:39 -04:00
head.h	RISC-V: enable XIP	2021-04-26 08:31:28 -07:00
head.S	RISC-V: Introduce sv48 support without relocatable kernel	2022-01-19 19:37:44 -08:00
image-vars.h	arch/riscv:fix typo in a comment in arch/riscv/kernel/image-vars.h	2021-02-18 23:18:00 -08:00
irq.c
jump_label.c
kexec_relocate.S	riscv: Don't use va_pa_offset on kdump	2022-01-09 10:38:06 -08:00
kgdb.c
machine_kexec.c	riscv: use hart id instead of cpu id on machine_kexec	2022-01-09 10:40:00 -08:00
Makefile	riscv: kexec: do not add '-mno-relax' flag if compiler doesn't support it	2021-08-12 07:16:52 -07:00
mcount-dyn.S	riscv: Using PATCHABLE_FUNCTION_ENTRY instead of MCOUNT	2021-01-14 15:09:05 -08:00
mcount.S	riscv: Workaround mcount name prior to clang-13	2021-04-26 08:25:01 -07:00
module-sections.c
module.c	riscv: module: Create module allocations without exec permissions	2021-04-26 08:25:15 -07:00
patch.c	riscv: Fixup compile error BUILD_BUG_ON failed	2021-01-14 15:09:01 -08:00
perf_callchain.c	perf: Drop dead and useless guest "support" from arm, csky, nds32 and riscv	2021-11-17 14:49:07 +01:00
perf_event.c
perf_regs.c	perf/arch: Remove perf_sample_data::regs_user_copy	2020-11-09 18:12:34 +01:00
process.c	riscv: Turn has_fpu into a static key if FPU=y	2021-05-25 22:56:57 -07:00
ptrace.c	riscv: Ensure the value of FP registers in the core dump file is up to date	2021-08-24 20:54:10 -07:00
reset.c	riscv: set default pm_power_off to NULL	2021-10-04 14:16:57 -07:00
riscv_ksyms.c	riscv: provide memmove implementation	2020-12-10 17:27:54 -08:00
sbi.c	RISC-V: Use SBI SRST extension when available	2022-01-11 10:25:43 -08:00
setup.c	RISC-V: Use common riscv_cpuid_to_hartid_mask() for both SMP=y and SMP=n	2022-01-09 12:13:31 -08:00
signal.c	riscv: Turn has_fpu into a static key if FPU=y	2021-05-25 22:56:57 -07:00
smp.c	RISC-V: Use common riscv_cpuid_to_hartid_mask() for both SMP=y and SMP=n	2022-01-09 12:13:31 -08:00
smpboot.c	sched/core: Initialize the idle task with preemption disabled	2021-05-12 13:01:45 +02:00
soc.c	riscv: Fix builtin DTB handling	2021-01-07 19:00:50 -08:00
stacktrace.c	arch: Make ARCH_STACKWALK independent of STACKTRACE	2021-12-10 14:06:03 +00:00
sys_riscv.c
syscall_table.c	riscv/vdso: Refactor asm/vdso.h	2021-10-02 13:42:23 -07:00
time.c	RISC-V Patches for the 5.13 Merge Window, Part 1	2021-05-06 09:24:18 -07:00
traps.c	exit: Add and use make_task_dead.	2021-12-13 12:04:45 -06:00
traps_misaligned.c
vdso.c	riscv/vdso: Add support for time namespaces	2021-10-04 14:16:43 -07:00
vmlinux-xip.lds.S	riscv: vmlinux.lds.S|vmlinux-xip.lds.S: remove .fixup section	2022-01-05 17:53:37 -08:00
vmlinux.lds.S	riscv: vmlinux.lds.S|vmlinux-xip.lds.S: remove .fixup section	2022-01-05 17:53:37 -08:00