linux/arch/riscv/mm
Palmer Dabbelt f578055558
Merge patch series "riscv: Introduce KASLR"
Alexandre Ghiti <alexghiti@rivosinc.com> says:

The following KASLR implementation allows to randomize the kernel mapping:

- virtually: we expect the bootloader to provide a seed in the device-tree
- physically: only implemented in the EFI stub, it relies on the firmware to
  provide a seed using EFI_RNG_PROTOCOL. arm64 has a similar implementation
  hence the patch 3 factorizes KASLR related functions for riscv to take
  advantage.

The new virtual kernel location is limited by the early page table that only
has one PUD and with the PMD alignment constraint, the kernel can only take
< 512 positions.

* b4-shazam-merge:
  riscv: libstub: Implement KASLR by using generic functions
  libstub: Fix compilation warning for rv32
  arm64: libstub: Move KASLR handling functions to kaslr.c
  riscv: Dump out kernel offset information on panic
  riscv: Introduce virtual kernel mapping KASLR

Link: https://lore.kernel.org/r/20230722123850.634544-1-alexghiti@rivosinc.com
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2023-09-08 11:25:13 -07:00
..
cacheflush.c riscv: implement the new page table range API 2023-08-24 16:20:23 -07:00
context.c riscv: mm: use bitmap_zero() API 2023-08-31 00:18:29 -07:00
dma-noncoherent.c Merge patch series "Add non-coherent DMA support for AX45MP" 2023-09-08 11:24:34 -07:00
extable.c riscv: extable: fix err reg writing in dedicated uaccess handler 2022-02-08 17:02:47 -08:00
fault.c mm: drop per-VMA lock when returning VM_FAULT_RETRY or VM_FAULT_COMPLETED 2023-08-24 16:20:17 -07:00
hugetlbpage.c mm: riscv: fix an unsafe pte read in huge_pte_alloc() 2023-07-05 07:24:17 -07:00
init.c Merge patch series "riscv: Introduce KASLR" 2023-09-08 11:25:13 -07:00
kasan_init.c RISC-V Patches for the 6.6 Merge Window, Part 1 2023-09-01 08:09:48 -07:00
Makefile riscv: mm: stub extable related functions/macros for !MMU 2023-06-14 07:17:45 -07:00
pageattr.c mm: enable page walking API to lock vmas during the walk 2023-08-21 13:07:20 -07:00
pgtable.c riscv: mm: Implement pmdp_collapse_flush for THP 2023-02-01 20:52:09 -08:00
physaddr.c riscv: Use PUD/P4D/PGD pages for the linear mapping 2023-04-18 20:43:04 -07:00
pmem.c riscv: mm: dma-noncoherent: nonstandard cache operations support 2023-09-01 09:08:57 -07:00
ptdump.c riscv: Fix ptdump when KASAN is enabled 2023-04-19 07:24:53 -07:00
tlbflush.c RISC-V: Use IPIs for remote TLB flush when possible 2023-04-08 11:26:24 +01:00