From: "Junhui Liu" <junhui.liu@pigmoral.tech>
To: "Guo Ren" <guoren@kernel.org>, <linux-riscv@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Cc: <dlan@kernel.org>, <devicetree@vger.kernel.org>,
<spacemit@lists.linux.dev>, <junhui.liu@pigmoral.tech>,
<stable@vger.kernel.org>, "Guodong Xu" <docular.xu@gmail.com>
Subject: Re: [PATCH V2] riscv: dts: spacemit: k3: fix IMSIC num-guest-ids
Date: Mon, 17 Aug 2026 22:29:42 +0800 [thread overview]
Message-ID: <DKRAH0LTEIJ8.IFPZCP0258SM@pigmoral.tech> (raw)
In-Reply-To: <20260817033038.2286436-1-guoren@kernel.org>
Hi Guo,
On Mon Aug 17, 2026 at 11:30 AM CST, Guo Ren wrote:
> From: "GUO Ren (XuanTie)" <guoren@kernel.org>
>
> The initial K3 device tree used generic/placeholder values for the
> IMSIC guest configuration:
>
> riscv,num-guest-ids = <511>;
>
> According to the SpacemiT K3 User Manual this values is incorrect
> for the X100 cores:
>
> - Advanced Interrupt Architecture (AIA):
> - M-mode MSI: 512
> - S-mode MSI: 512
> - VS-mode MSI: 64
>
> Therefore, S-mode IMSIC (simsic) needs num-guest-ids = 63.
>
> Fixes: 56f37e391a62 ("riscv: dts: spacemit: add initial support for K3 SoC")
> Cc: stable@vger.kernel.org
> Cc: Guodong Xu <docular.xu@gmail.com>
> Cc: Yixun Lan <dlan@kernel.org>
> Signed-off-by: GUO Ren (XuanTie) <guoren@kernel.org>
Reviewed-by: Junhui Liu <junhui.liu@pigmoral.tech>
--
Best regards,
Junhui Liu
prev parent reply other threads:[~2026-08-17 14:30 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-17 3:30 [PATCH V2] riscv: dts: spacemit: k3: fix IMSIC num-guest-ids Guo Ren
2026-08-17 8:50 ` Yixun Lan
2026-08-17 14:29 ` Junhui Liu [this message]
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