[PATCH v1 0/1] riscv: Introduce system suspend support

[Conor Dooley]

On Thu, Oct 12, 2023 at 09:21:49AM +0200, Andrew Jones wrote:
> OpenSBI v1.3 and later supports the SUSP SBI extension which has recently
> been frozen with the freezing of SBI 2.0. This one patch series adds
> system suspend support to Linux, which implements "suspend-to-RAM". To
> use it, build the kernel with CONFIG_SUSPEND, boot on a platform which
> supports system suspend, and then issue 'echo mem > /sys/power/state'.
> It's also possible to test this Linux support on a platform without
> system suspend by using OpenSBI's system suspend test support. To enable
> test support add
> 
>       opensbi-domains {
>           compatible = "opensbi,domain,config";
>           system-suspend-test;
>       };
> 
> to the chosen node of the device tree. With the test node present,
> OpenSBI will wait 5 seconds on a suspend and then kick a resume.
> 
> Note: Resume may fail without the fix for probing misaligned access
> speed[1]. It's best to apply that fix before attempting system suspend.
> 
> [1] https://lore.kernel.org/all/20230920193801.3035093-1-evan@rivosinc.com/
> 
> Changes for v1:
>   - Rebase on v6.6-rc1 -- only minor Kconfig change needed

Would you mind resending this rebased on -rc1 again? It looks as if the
patchwork CI threw a fit do to differing expectations about function
signatures for the misaligned access probing.

Cheers,
Conor.
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