linux-kernel - Re: [PATCH 07/10] riscv: Make SYS_SUPPORTS

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]

Date:   Wed, 13 May 2020 14:14:45 -0700 (PDT)
From:   Palmer Dabbelt <palmer@...belt.com>
To:     wangkefeng.wang@...wei.com
CC:     Paul Walmsley <paul.walmsley@...ive.com>, aou@...s.berkeley.edu,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        wangkefeng.wang@...wei.com, hulkci@...wei.com
Subject:     Re: [PATCH 07/10] riscv: Make SYS_SUPPORTS_HUGETLBFS depends on MMU

On Sun, 10 May 2020 19:19:58 PDT (-0700), wangkefeng.wang@...wei.com wrote:
> HUGETLBFS only used when MMU enabled, add the dependence.
>
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
> ---
>  arch/riscv/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
> index 494e670520ae..d0010ed8e0f4 100644
> --- a/arch/riscv/Kconfig
> +++ b/arch/riscv/Kconfig
> @@ -138,6 +138,7 @@ config ARCH_SUPPORTS_DEBUG_PAGEALLOC
>  	def_bool y
>
>  config SYS_SUPPORTS_HUGETLBFS
> +	depends on MMU
>  	def_bool y

I don't think this is the right way to do this: there's nothing specific to the
RISC-V implementation that makes HUGETLBFS depend on MMU.  That said, SH
appears to do it this way so I'm OK taking this for now.

>
>  config STACKTRACE_SUPPORT