I talked to Atish, he's not sure what's going on here either. I am going to add him to the CC list. On Tue, Jun 27, 2023 at 11:24 AM Conor Dooley <conor@xxxxxxxxxx> wrote: > Hey Charlie, > > On Mon, Jun 26, 2023 at 11:36:02AM -0700, Charlie Jenkins wrote: > > Make sv39 the default address space for mmap as some applications > > currently depend on this assumption. The RISC-V specification enforces > > that bits outside of the virtual address range are not used, so > > restricting the size of the default address space as such should be > > temporary. A hint address passed to mmap will cause the largest address > > space that fits entirely into the hint to be used. If the hint is less > > than or equal to 1<<38, a 39-bit address will be used. After an address > > space is completely full, the next smallest address space will be used. > > > > Documentation is also added to the RISC-V virtual memory section to > explain > > these changes. > > I don't know what went wrong here, but this never ended up in patchwork > for some reason, although it has appeared on lore. That seems to be via > the docs mailing list, rather than linux-riscv. Could you speak to Atish > and see if he knows what went wrong? > > Cheers, > Conor. > > > > > Charlie Jenkins (2): > > RISC-V: mm: Restrict address space for sv39,sv48,sv57 > > RISC-V: mm: Update documentation and include test > > > > Documentation/riscv/vm-layout.rst | 20 ++++++++ > > arch/riscv/include/asm/elf.h | 2 +- > > arch/riscv/include/asm/pgtable.h | 21 ++++++-- > > arch/riscv/include/asm/processor.h | 41 +++++++++++++--- > > tools/testing/selftests/riscv/Makefile | 2 +- > > tools/testing/selftests/riscv/mm/Makefile | 22 +++++++++ > > .../selftests/riscv/mm/testcases/mmap.c | 49 +++++++++++++++++++ > > 7 files changed, 144 insertions(+), 13 deletions(-) > > create mode 100644 tools/testing/selftests/riscv/mm/Makefile > > create mode 100644 tools/testing/selftests/riscv/mm/testcases/mmap.c > > > > > > base-commit: eef509789cecdce895020682192d32e8bac790e8 > > -- > > 2.34.1 > > >
