On Thu, Feb 2, 2023 at 4:07 PM Alexandre Ghiti <alexghiti@xxxxxxxxxxxx> wrote: > > Hi Conor, > > On Tue, Jan 31, 2023 at 8:25 PM Conor Dooley <conor@xxxxxxxxxx> wrote: > > > > Hey Alex, > > > > On Tue, Jan 31, 2023 at 04:11:14PM +0100, Alexandre Ghiti wrote: > > > This new version gets rid of the limitation that prevented KASAN kernels > > > to use the newly introduced parameters. > > > > What's the base commit for this version? And to answer your question: this patch applies nicely on top of v6.2-rc6 + my KASAN patchset (https://patchwork.kernel.org/project/linux-riscv/list/?series=715388) > > Fails to apply for me on top of for-next, fixes, rc1, and linux-next :/ > > I also tried it on top of your KASAN series, but no luck there either! > > Really sorry about that, that's the second time it happens, I'll > improve my workflow: I'll include the base-commit sha1/tag + a link to > all needed-but-not-yet-upstreamed patches. > > Thanks for your time, > > Alex > > > > > Thanks, > > Conor. > > > > > While looking into KASLR, I fell onto commit aacd149b6238 ("arm64: head: > > > avoid relocating the kernel twice for KASLR"): it allows to use the fdt > > > functions very early in the boot process with KASAN enabled by simply > > > compiling a new version of those functions without instrumentation. > > > > > > I had to change the handling of the command line parsing to make the > > > code self-contained in kernel/pi/cmd_early.c to avoid calling too many > > > __pi prefixed functions from outside this file. > > > > > > I'll use this approach like arm64 to handle the extraction of the random > > > seedi from the device tree for KASLR. > > > > > > @Ard: I copied the "pi" name but I have to admit I don't know what it > > > means. > > > > > > Alexandre Ghiti (1): > > > riscv: Allow to downgrade paging mode from the command line > > > > > > .../admin-guide/kernel-parameters.txt | 5 +- > > > arch/riscv/kernel/Makefile | 2 + > > > arch/riscv/kernel/pi/Makefile | 34 ++++++++++++ > > > arch/riscv/kernel/pi/cmdline_early.c | 52 +++++++++++++++++++ > > > arch/riscv/lib/memcpy.S | 2 + > > > arch/riscv/lib/memmove.S | 2 + > > > arch/riscv/mm/init.c | 36 ++++++++++--- > > > 7 files changed, 126 insertions(+), 7 deletions(-) > > > create mode 100644 arch/riscv/kernel/pi/Makefile > > > create mode 100644 arch/riscv/kernel/pi/cmdline_early.c > > > > > > -- > > > 2.37.2 > > >
