Messages in this thread | | | From | Christoph Hellwig <> | Subject | RISC-V nommu support v5 | Date | Thu, 17 Oct 2019 19:37:28 +0200 |
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Hi all,
below is a series to support nommu mode on RISC-V. For now this series just works under qemu with the qemu-virt platform, but Damien has also been able to get kernel based on this tree with additional driver hacks to work on the Kendryte KD210, but that will take a while to cleanup an upstream.
A git tree is available here:
git://git.infradead.org/users/hch/riscv.git riscv-nommu.5
Gitweb:
http://git.infradead.org/users/hch/riscv.git/shortlog/refs/heads/riscv-nommu.5
I've also pushed out a builtroot branch that can build a RISC-V nommu root filesystem here:
git://git.infradead.org/users/hch/buildroot.git riscv-nommu.2
Gitweb:
http://git.infradead.org/users/hch/buildroot.git/shortlog/refs/heads/riscv-nommu.2
Changes since v4: - rebased to 5.4-rc + latest riscv fixes - clean up do_trap_break - fix an SR_XPIE issue (Paul Walmsley) - use the symbolic PAGE_OFFSET value in the flat loader (Aurabindo Jayamohanan)
Changes since v3: - improve a few commit message - cleanup riscv_cpuid_to_hartid_mask - cleanup the timer handling - cleanup the IPI handling a little more - renamed CONFIG_M_MODE to CONFIG_RISCV_M_MODE - split out CONFIG_RISCV_SBI to make some of the ifdefs more obbious - use IS_ENABLED wherever possible instead of if ifdefs to make the code more readable
Changes since v2: - rebased to 5.3-rc - remove the EFI image header for nommu builds - set ARCH_SLAB_MINALIGN to ensure stack alignment in the flat binary loader - minor comment improvement - use #defines for more CSRs
Changes since v1: - fixes so that a kernel with this series still work on builds with an IOMMU - small clint cleanups - the binfmt_flat base and buildroot now don't put arguments on the stack
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