Alexandre Ghiti 2bfc6cd81b riscv: Move kernel mapping outside of linear mapping ... This is a preparatory patch for relocatable kernel and sv48 support. The kernel used to be linked at PAGE_OFFSET address therefore we could use the linear mapping for the kernel mapping. But the relocated kernel base address will be different from PAGE_OFFSET and since in the linear mapping, two different virtual addresses cannot point to the same physical address, the kernel mapping needs to lie outside the linear mapping so that we don't have to copy it at the same physical offset. The kernel mapping is moved to the last 2GB of the address space, BPF is now always after the kernel and modules use the 2GB memory range right before the kernel, so BPF and modules regions do not overlap. KASLR implementation will simply have to move the kernel in the last 2GB range and just take care of leaving enough space for BPF. In addition, by moving the kernel to the end of the address space, both sv39 and sv48 kernels will be exactly the same without needing to be relocated at runtime. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alexandre Ghiti <alex@ghiti.fr> [Palmer: Squash the STRICT_RWX fix, and a !MMU fix] Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>		2021-04-26 08:25:04 -07:00
..
probes	RISC-V: probes: Treat the instruction stream as host-endian	2021-02-18 23:18:02 -08:00
vdso	riscv: Use $(LD) instead of $(CC) to link vDSO	2021-04-26 08:24:59 -07:00
.gitignore	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
asm-offsets.c	riscv: Enable per-task stack canaries	2021-01-14 15:09:10 -08:00
cacheinfo.c	riscv: cacheinfo: Fix using smp_processor_id() in preemptible	2021-01-12 20:25:32 -08:00
cpu-hotplug.c	RISC-V: Support cpu hotplug	2020-03-31 11:28:30 -07:00
cpu.c	RISC-V: Rename and move plic_find_hart_id() to arch directory	2020-06-09 19:11:20 -07:00
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	RISC-V: Support cpu hotplug	2020-03-31 11:28:30 -07:00
cpu_ops_spinwait.c	RISC-V: Add cpu_ops and modify default booting method	2020-03-31 11:25:56 -07:00
cpufeature.c	RISC-V: Add bitmap reprensenting ISA features common across CPUs	2020-05-04 14:08:59 -07:00
efi-header.S	RISC-V: Add PE/COFF header for EFI stub	2020-10-02 14:31:16 -07:00
efi.c	RISC-V: Add EFI runtime services	2020-10-02 14:31:28 -07:00
entry.S	riscv: sifive: Apply errata "cip-453" patch	2021-04-26 08:24:57 -07:00
fpu.S	riscv: abstract out CSR names for supervisor vs machine mode	2019-11-05 09:20:42 -08:00
ftrace.c	riscv: Using PATCHABLE_FUNCTION_ENTRY instead of MCOUNT	2021-01-14 15:09:05 -08:00
head.h	RISC-V: Move DT mapping outof fixmap	2020-10-02 14:30:57 -07:00
head.S	riscv: Move kernel mapping outside of linear mapping	2021-04-26 08:25:04 -07:00
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	RISC-V: Remove do_IRQ() function	2020-06-09 19:11:24 -07:00
jump_label.c	riscv: Add jump-label implementation	2020-07-30 11:37:43 -07:00
kgdb.c	riscv: Fix "no previous prototype" compile warning in kgdb.c file	2020-07-09 20:09:30 -07:00
Makefile	riscv: Add kprobes supported	2021-01-14 15:09:06 -08:00
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	riscv: add missing header file includes	2019-10-28 00:46:01 -07:00
module.c	riscv: Move kernel mapping outside of linear mapping	2021-04-26 08:25:04 -07:00
patch.c	riscv: Fixup compile error BUILD_BUG_ON failed	2021-01-14 15:09:01 -08:00
perf_callchain.c	riscv: Make stack walk callback consistent with generic code	2020-11-20 18:53:38 -08:00
perf_event.c	riscv: perf_event: Make some funciton static	2020-05-11 13:48:19 -07:00
perf_regs.c	perf/arch: Remove perf_sample_data::regs_user_copy	2020-11-09 18:12:34 +01:00
process.c	io_uring-worker.v3-2021-02-25	2021-02-27 08:29:02 -08:00
ptrace.c	RISC-V: Implement ptrace regs and stack API	2021-01-14 15:09:01 -08:00
reset.c	riscv: cleanup the default power off implementation	2019-11-13 13:22:52 -08:00
riscv_ksyms.c	riscv: provide memmove implementation	2020-12-10 17:27:54 -08:00
sbi.c	riscv: Add 3 SBI wrapper functions to get cpu manufacturer information	2021-04-26 08:24:54 -07:00
setup.c	riscv: Move kernel mapping outside of linear mapping	2021-04-26 08:25:04 -07:00
signal.c	riscv: Add uprobes supported	2021-01-14 15:09:08 -08:00
smp.c	riscv: Enable generic clockevent broadcast	2021-03-16 20:40:06 -07:00
smpboot.c	riscv: Introduce alternative mechanism to apply errata solution	2021-04-26 08:24:55 -07:00
soc.c	riscv: Fix builtin DTB handling	2021-01-07 19:00:50 -08:00
stacktrace.c	RISC-V Patches for the 5.12 Merge Window	2021-02-26 10:28:35 -08:00
sys_riscv.c	RISC-V: Don't allow write+exec only page mapping request in mmap	2020-06-18 17:28:53 -07:00
syscall_table.c	riscv: add missing header file includes	2019-10-28 00:46:01 -07:00
time.c	riscv: Fix kernel time_init()	2021-01-07 18:01:36 -08:00
traps.c	riscv: Add dump stack in show_regs	2021-01-14 15:09:11 -08:00
traps_misaligned.c	riscv: Unaligned load/store handling for M_MODE	2020-04-03 10:45:33 -07:00
vdso.c	riscv: Fixup CONFIG_GENERIC_TIME_VSYSCALL	2021-01-12 20:34:44 -08:00
vmlinux.lds.S	riscv: Move kernel mapping outside of linear mapping	2021-04-26 08:25:04 -07:00