[v5,0/2] riscv: Use PUD/P4D/PGD pages for the linear mapping

Message

Alexandre Ghiti Jan. 25, 2023, 8:12 a.m. UTC

This patchset intends to improve tlb utilization by using hugepages for
the linear mapping.

v5:
- Fix nommu builds by getting rid of riscv_pfn_base in patch 1, thanks
  Conor
- Add RB from Andre

v4:
- Rebase on top of v6.2-rc3, as noted by Conor
- Add Acked-by Rob

v3:
- Change the comment about initrd_start VA conversion so that it fits
  ARM64 and RISCV64 (and others in the future if needed), as suggested
  by Rob

v2:
- Add a comment on why RISCV64 does not need to set initrd_start/end that
  early in the boot process, as asked by Rob

Alexandre Ghiti (2):
  riscv: Get rid of riscv_pfn_base variable
  riscv: Use PUD/P4D/PGD pages for the linear mapping

 arch/riscv/include/asm/page.h | 19 +++++++++++++++++--
 arch/riscv/mm/init.c          | 28 ++++++++++++++++++----------
 arch/riscv/mm/physaddr.c      | 16 ++++++++++++++++
 drivers/of/fdt.c              | 11 ++++++-----
 4 files changed, 57 insertions(+), 17 deletions(-)