Messages in this thread |  | | From | Björn Töpel <> | Subject | Re: [PATCH v2] riscv: Allow to downgrade paging mode from the command line | Date | Thu, 15 Dec 2022 12:30:46 +0100 |
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Alexandre Ghiti <alexghiti@rivosinc.com> writes:
> Add 2 early command line parameters called "no5lvl" and "no4lvl" (using > the same naming as x86) to allow a user to downgrade from sv57 (the > default mode if the hardware supports it) to sv48 or sv39. > > Note that going through the device tree to get the kernel command line > works with ACPI too since the efi stub creates a device tree anyway with > the command line. > > Also, as those params are treated very early in the boot process and we > use standard device tree functions that may be kasan instrumented, we > only enable them for !KASAN configurations. > > Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Reviewed-by: Björn Töpel <bjorn@kernel.org>
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