linux-kernel - RE: [PATCH v2 3/3] RISC-V: Add arch functions to support hibernation/suspend-to-disk

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Message-ID: <d03e4bf7832f48d7aabd07dfd13a3e92@EXMBX066.cuchost.com>
Date:   Tue, 10 Jan 2023 07:00:38 +0000
From:   JeeHeng Sia <jeeheng.sia@...rfivetech.com>
To:     Conor Dooley <conor@...nel.org>,
        Andrew Jones <ajones@...tanamicro.com>
CC:     "paul.walmsley@...ive.com" <paul.walmsley@...ive.com>,
        "palmer@...belt.com" <palmer@...belt.com>,
        "aou@...s.berkeley.edu" <aou@...s.berkeley.edu>,
        "linux-riscv@...ts.infradead.org" <linux-riscv@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Leyfoon Tan <leyfoon.tan@...rfivetech.com>,
        Mason Huo <mason.huo@...rfivetech.com>
Subject: RE: [PATCH v2 3/3] RISC-V: Add arch functions to support
 hibernation/suspend-to-disk



> -----Original Message-----
> From: Conor Dooley <conor@...nel.org>
> Sent: Tuesday, 10 January, 2023 3:46 AM
> To: Andrew Jones <ajones@...tanamicro.com>
> Cc: JeeHeng Sia <jeeheng.sia@...rfivetech.com>; paul.walmsley@...ive.com;
> palmer@...belt.com; aou@...s.berkeley.edu; linux-
> riscv@...ts.infradead.org; linux-kernel@...r.kernel.org; Leyfoon Tan
> <leyfoon.tan@...rfivetech.com>; Mason Huo
> <mason.huo@...rfivetech.com>
> Subject: Re: [PATCH v2 3/3] RISC-V: Add arch functions to support
> hibernation/suspend-to-disk
> 
> On Mon, Jan 09, 2023 at 08:36:24PM +0100, Andrew Jones wrote:
> > On Mon, Jan 09, 2023 at 02:24:07PM +0800, Sia Jee Heng wrote:
> 
> > > To enable hibernation/suspend to disk into RISCV, the below config
> > > need to be enabled:
> > > - CONFIG_ARCH_HIBERNATION_HEADER
> > > - CONFIG_ARCH_HIBERNATION_POSSIBLE
> > > - CONFIG_ARCH_RV64I
> > > - CONFIG_64BIT
> 
> > What's blocking this for being for both 32-bit and 64-bit?
> 
> Just from checking with b4 diff, it's because I told them they broke the
> rv32 build with their v1 implementation.
> 
> I'd rather they fixed whatever the issue was with rv32 than ignored it.
The main reason is because I don't have a rv32 system to verify the rv32 hibernation. I can submit another patch to support rv32 hibernation once I have the system or someone who has the rv32 system can submit the patch ontop. 
> 
> Thanks,
> Conor.