linux-kernel - Re: [PATCH] cache: StarFive: Require a 64-bit system

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240722-banter-balance-ead2d4bae7fd@spud>
Date: Mon, 22 Jul 2024 16:33:27 +0100
From: Conor Dooley <conor@...nel.org>
To: Palmer Dabbelt <palmer@...osinc.com>
Cc: linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cache: StarFive: Require a 64-bit system

On Fri, Jul 19, 2024 at 09:38:41AM -0700, Palmer Dabbelt wrote:
> From: Palmer Dabbelt <palmer@...osinc.com>
> 
> This has a bunch of {read,write}q() calls, so it won't work on 32-bit
> systems.  I don't think there's any 32-bit StarFive systems, so for now
> just require 64-bit.
> 
> Fixes: cabff60ca77d ("cache: Add StarFive StarLink cache management")
> Signed-off-by: Palmer Dabbelt <palmer@...osinc.com>

Acked-by: Conor Dooley <conor.dooley@...rochip.com>
if you wanna take it - might be worth being explicit about it causing
build issues for rv32 though.

Thanks,
Conor.

> ---
>  drivers/cache/Kconfig                   | 1 +
>  drivers/cache/starfive_starlink_cache.c | 2 +-
>  2 files changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/cache/Kconfig b/drivers/cache/Kconfig
> index 94abd8f632a7..db51386c663a 100644
> --- a/drivers/cache/Kconfig
> +++ b/drivers/cache/Kconfig
> @@ -18,6 +18,7 @@ config STARFIVE_STARLINK_CACHE
>  	bool "StarFive StarLink Cache controller"
>  	depends on RISCV
>  	depends on ARCH_STARFIVE
> +	depends on 64BIT
>  	select RISCV_DMA_NONCOHERENT
>  	select RISCV_NONSTANDARD_CACHE_OPS
>  	help
> diff --git a/drivers/cache/starfive_starlink_cache.c b/drivers/cache/starfive_starlink_cache.c
> index 24c7d078ca22..8ee9569771f8 100644
> --- a/drivers/cache/starfive_starlink_cache.c
> +++ b/drivers/cache/starfive_starlink_cache.c
> @@ -19,7 +19,7 @@
>  #define STARLINK_CACHE_FLUSH_CTL			0x10
>  #define STARLINK_CACHE_ALIGN				0x40
>  
> -#define STARLINK_CACHE_ADDRESS_RANGE_MASK		GENMASK(39, 0)
> +#define STARLINK_CACHE_ADDRESS_RANGE_MASK		GENMASK(39ULL, 0)
>  #define STARLINK_CACHE_FLUSH_CTL_MODE_MASK		GENMASK(2, 1)
>  #define STARLINK_CACHE_FLUSH_CTL_ENABLE_MASK		BIT(0)
>  
> -- 
> 2.45.2
> 

Download attachment "signature.asc" of type "application/pgp-signature" (229 bytes)