linux-kernel - Re: [PATCH v2 2/5] riscv: Use SYM_*() assembly macros instead of deprecated ones

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:   Tue, 24 Oct 2023 17:23:56 +0200
From:   Andrew Jones <ajones@...tanamicro.com>
To:     Clément Léger <cleger@...osinc.com>
Cc:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Anup Patel <anup@...infault.org>,
        Atish Patra <atishp@...shpatra.org>,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, kvm-riscv@...ts.infradead.org
Subject: Re: [PATCH v2 2/5] riscv: Use SYM_*() assembly macros instead of
 deprecated ones

On Tue, Oct 24, 2023 at 03:26:52PM +0200, Clément Léger wrote:
...
> diff --git a/arch/riscv/lib/uaccess.S b/arch/riscv/lib/uaccess.S
> index 09b47ebacf2e..3ab438f30d13 100644
> --- a/arch/riscv/lib/uaccess.S
> +++ b/arch/riscv/lib/uaccess.S
> @@ -10,8 +10,7 @@
>  	_asm_extable	100b, \lbl
>  	.endm
>  
> -ENTRY(__asm_copy_to_user)
> -ENTRY(__asm_copy_from_user)
> +SYM_FUNC_START(__asm_copy_to_user)
>  
>  	/* Enable access to user memory */
>  	li t6, SR_SUM
> @@ -181,13 +180,13 @@ ENTRY(__asm_copy_from_user)
>  	csrc CSR_STATUS, t6
>  	sub a0, t5, a0
>  	ret
> -ENDPROC(__asm_copy_to_user)
> -ENDPROC(__asm_copy_from_user)
> +SYM_FUNC_END(__asm_copy_to_user)
>  EXPORT_SYMBOL(__asm_copy_to_user)
> +SYM_FUNC_ALIAS(__asm_copy_from_user, __asm_copy_to_user)
>  EXPORT_SYMBOL(__asm_copy_from_user)

I didn't see any comment about the sharing of debug info among both the
from and to functions. Assuming it isn't confusing in some way, then

Reviewed-by: Andrew Jones <ajones@...tanamicro.com>

Thanks,
drew