PatchTrack

From: Heiko Stuebner <heiko@...> Date: Fri, 17 Dec 2021 17:23:53 +0100

Commit-Message

Some current cpus based on T-Head cores implement memory-types way different than described in the svpbmt spec even going so far as using PTE bits marked as reserved. Add the T-Head vendor-id and necessary errata code to replace the affected instructions. Signed-off-by: Heiko Stuebner <heiko@...> Tested-by: Samuel Holland <samuel@...>

Patch-Comment

arch/riscv/Kconfig.erratas | 19 ++++++ arch/riscv/errata/Makefile | 1 + arch/riscv/errata/sifive/errata.c | 7 ++- arch/riscv/errata/thead/Makefile | 1 + arch/riscv/errata/thead/errata.c | 85 ++++++++++++++++++++++++++ arch/riscv/include/asm/alternative.h | 5 ++ arch/riscv/include/asm/errata_list.h | 47 ++++++++++++-- arch/riscv/include/asm/pgtable-64.h | 18 +++++- arch/riscv/include/asm/pgtable.h | 18 +++++- arch/riscv/include/asm/vendorid_list.h | 1 + arch/riscv/kernel/alternative.c | 14 +++++ arch/riscv/kernel/cpufeature.c | 7 ++- arch/riscv/mm/init.c | 1 + 13 files changed, 214 insertions(+), 10 deletions(-) create mode 100644 arch/riscv/errata/thead/Makefile create mode 100644 arch/riscv/errata/thead/errata.c

Statistics

• 214 lines added
• 10 lines removed

Changes