On Thu, Sep 2, 2021 at 10:07 PM Anup Patel <anup.patel@wdc.com> wrote:
>
> We have two new machine options "aia" and "aia-guests" available
> for the RISC-V virt machine so let's document these options.
>
> Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Alistair
> ---
> docs/system/riscv/virt.rst | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
>
> diff --git a/docs/system/riscv/virt.rst b/docs/system/riscv/virt.rst
> index fa016584bf..373645513a 100644
> --- a/docs/system/riscv/virt.rst
> +++ b/docs/system/riscv/virt.rst
> @@ -63,6 +63,22 @@ The following machine-specific options are supported:
> When this option is "on", ACLINT devices will be emulated instead of
> SiFive CLINT. When not specified, this option is assumed to be "off".
>
> +- aia=[none|aplic|aplic-imsic]
> +
> + This option allows selecting interrupt controller defined by the AIA
> + (advanced interrupt architecture) specification. The "aia=aplic" selects
> + APLIC (advanced platform level interrupt controller) to handle wired
> + interrupts whereas the "aia=aplic-imsic" selects APLIC and IMSIC (incoming
> + message signaled interrupt controller) to handle both wired interrupts and
> + MSIs. When not specified, this option is assumed to be "none" which selects
> + SiFive PLIC to handle wired interrupts.
> +
> +- aia-guests=nnn
> +
> + The number of per-HART VS-level AIA IMSIC pages to be emulated for a guest
> + having AIA IMSIC (i.e. "aia=aplic-imsic" selected). When not specified,
> + the default number of per-HART VS-level AIA IMSIC pages is 0.
> +
> Running Linux kernel
> --------------------
>
> --
> 2.25.1
>
>