Merge patch series "riscv, mm: detect svnapot cpu support at runtime"

Qinglin Pan <panqinglin00@gmail.com> says: Svnapot is a RISC-V extension for marking contiguous 4K pages as a non-4K page. This patch set is for using Svnapot in hugetlb fs and huge vmap. This patchset adds a Kconfig item for using Svnapot in "Platform type"->"SVNAPOT extension support". Its default value is on, and people can set it off if they don't allow kernel to detect Svnapot hardware support and leverage it. Tested on: - qemu rv64 with "Svnapot support" off and svnapot=true. - qemu rv64 with "Svnapot support" on and svnapot=true. - qemu rv64 with "Svnapot support" off and svnapot=false. - qemu rv64 with "Svnapot support" on and svnapot=false. * b4-shazam-merge: riscv: mm: support Svnapot in huge vmap riscv: mm: support Svnapot in hugetlb page riscv: mm: modify pte format for Svnapot Link: https://lore.kernel.org/r/20230209131647.17245-1-panqinglin00@gmail.com [Palmer: fix up the feature ordering in the merge] Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
2026-10-16 22:39:48 +00:00 · 2023-03-09 15:46:40 -08:00 · 2023-03-09 15:46:40 -08:00 · 4a4c459872
commit 4a4c459872
parent fe15c26ee2 ce173474cf
10 changed files with 489 additions and 9 deletions
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
--- a/arch/riscv/include/asm/hugetlb.h
+++ b/arch/riscv/include/asm/hugetlb.h
--- a/arch/riscv/include/asm/hwcap.h
+++ b/arch/riscv/include/asm/hwcap.h
--- a/arch/riscv/include/asm/page.h
+++ b/arch/riscv/include/asm/page.h
--- a/arch/riscv/include/asm/pgtable-64.h
+++ b/arch/riscv/include/asm/pgtable-64.h
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
--- a/arch/riscv/include/asm/vmalloc.h
+++ b/arch/riscv/include/asm/vmalloc.h
--- a/arch/riscv/kernel/cpu.c
+++ b/arch/riscv/kernel/cpu.c
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
--- a/arch/riscv/mm/hugetlbpage.c
+++ b/arch/riscv/mm/hugetlbpage.c