Messages in this thread | | | Subject | Re: [PATCH 0/3] Move kernel mapping outside the linear mapping | From | Alex Ghiti <> | Date | Sat, 13 Mar 2021 04:26:47 -0500 |
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Hi Palmer,
Le 3/9/21 à 9:54 PM, Palmer Dabbelt a écrit : > On Thu, 25 Feb 2021 00:04:50 PST (-0800), alex@ghiti.fr wrote: >> I decided to split sv48 support in small series to ease the review. >> >> This patchset pushes the kernel mapping (modules and BPF too) to the last >> 4GB of the 64bit address space, this allows to: >> - implement relocatable kernel (that will come later in another >> patchset) that requires to move the kernel mapping out of the linear >> mapping to avoid to copy the kernel at a different physical address. >> - have a single kernel that is not relocatable (and then that avoids the >> performance penalty imposed by PIC kernel) for both sv39 and sv48. >> >> The first patch implements this behaviour, the second patch introduces a >> documentation that describes the virtual address space layout of the >> 64bit >> kernel and the last patch is taken from my sv48 series where I simply >> added >> the dump of the modules/kernel/BPF mapping. >> >> I removed the Reviewed-by on the first patch since it changed enough from >> last time and deserves a second look. >> >> Alexandre Ghiti (3): >> riscv: Move kernel mapping outside of linear mapping >> Documentation: riscv: Add documentation that describes the VM layout >> riscv: Prepare ptdump for vm layout dynamic addresses >> >> Documentation/riscv/index.rst | 1 + >> Documentation/riscv/vm-layout.rst | 61 ++++++++++++++++++++++ >> arch/riscv/boot/loader.lds.S | 3 +- >> arch/riscv/include/asm/page.h | 18 ++++++- >> arch/riscv/include/asm/pgtable.h | 37 +++++++++---- >> arch/riscv/include/asm/set_memory.h | 1 + >> arch/riscv/kernel/head.S | 3 +- >> arch/riscv/kernel/module.c | 6 +-- >> arch/riscv/kernel/setup.c | 3 ++ >> arch/riscv/kernel/vmlinux.lds.S | 3 +- >> arch/riscv/mm/fault.c | 13 +++++ >> arch/riscv/mm/init.c | 81 +++++++++++++++++++++++------ >> arch/riscv/mm/kasan_init.c | 9 ++++ >> arch/riscv/mm/physaddr.c | 2 +- >> arch/riscv/mm/ptdump.c | 67 +++++++++++++++++++----- >> 15 files changed, 258 insertions(+), 50 deletions(-) >> create mode 100644 Documentation/riscv/vm-layout.rst > > This generally looks good, but I'm getting a bunch of checkpatch > warnings and some conflicts, do you mind fixing those up (and including > your other kasan patch, as that's likely to conflict)?
I fixed a few checkpatch warnings and rebased on top of for-next but had not conflicts.
I have just sent the v2.
Thanks,
Alex
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