linux-kernel - Re: [PATCH -fixes v4 3/3] riscv: Save/restore envcfg CSR during CPU suspend

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Date: Wed, 28 Feb 2024 10:14:30 +0000
From: Conor Dooley <conor@...nel.org>
To: Samuel Holland <samuel.holland@...ive.com>
Cc: Palmer Dabbelt <palmer@...belt.com>,
	Andrew Jones <ajones@...tanamicro.com>,
	linux-kernel@...r.kernel.org, Alexandre Ghiti <alex@...ti.fr>,
	linux-riscv@...ts.infradead.org,
	Stefan O'Rear <sorear@...tmail.com>, stable@...r.kernel.org
Subject: Re: [PATCH -fixes v4 3/3] riscv: Save/restore envcfg CSR during CPU
 suspend

On Tue, Feb 27, 2024 at 10:55:35PM -0800, Samuel Holland wrote:
> The value of the [ms]envcfg CSR is lost when entering a nonretentive
> idle state, so the CSR must be rewritten when resuming the CPU.
> 
> Cc: <stable@...r.kernel.org> # v6.7+
> Fixes: 43c16d51a19b ("RISC-V: Enable cbo.zero in usermode")
> Signed-off-by: Samuel Holland <samuel.holland@...ive.com>

Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>

Cheers,
Conor.

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