[RFC PATCH v2 0/2] Risc-V Svinval support
Palmer Dabbelt
palmer at dabbelt.com
Wed Jun 1 20:52:40 PDT 2022
On Sun, 24 Apr 2022 02:02:14 PDT (-0700), mchitale at ventanamicro.com wrote:
>
> This patch adds support for the Svinval extension as defined in the
> Risc V Privileged specification. This patchset depends on:
>
> https://patchwork.kernel.org/project/linux-riscv/list/?series=632984
IIRC Marc still has some unresolved feedback on that one, for the IRQ
bits?
>
> The feature was tested with qemu from latest master branch with
> following additional patch:
> https://lists.nongnu.org/archive/html/qemu-riscv/2022-03/msg00142.html
>
> Changes in V2:
>
> - Rebased on 5.18-rc3
> - update riscv_fill_hwcap to probe Svinval extension
>
> Mayuresh Chitale (2):
> riscv: enum for svinval extension
> riscv: mm: use svinval instructions instead of sfence.vma
>
> arch/riscv/include/asm/hwcap.h | 1 +
> arch/riscv/include/asm/tlbflush.h | 12 ++++
> arch/riscv/kernel/cpu.c | 1 +
> arch/riscv/kernel/cpufeature.c | 1 +
> arch/riscv/kernel/setup.c | 1 +
> arch/riscv/mm/tlbflush.c | 116 ++++++++++++++++++++++++++++--
> 6 files changed, 126 insertions(+), 6 deletions(-)
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