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

[Conor Dooley]

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 at vger.kernel.org> # v6.7+
> Fixes: 43c16d51a19b ("RISC-V: Enable cbo.zero in usermode")
> Signed-off-by: Samuel Holland <samuel.holland at sifive.com>

Reviewed-by: Conor Dooley <conor.dooley at microchip.com>

Cheers,
Conor.
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