linux-kernel - Re: [PATCH V2] Keep 3 high personality bytes across exec

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Message-ID: <18536.38684.384039.662264@cargo.ozlabs.ibm.com>
Date:	Mon, 30 Jun 2008 18:19:40 +1000
From:	Paul Mackerras <paulus@...ba.org>
To:	Eric B Munson <ebmunson@...ibm.com>
Cc:	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] Keep 3 high personality bytes across exec

Eric B Munson writes:

> --- a/include/asm-powerpc/elf.h
> +++ b/include/asm-powerpc/elf.h
> @@ -257,7 +257,8 @@ do {								\
>  	else							\
>  		clear_thread_flag(TIF_ABI_PENDING);		\
>  	if (personality(current->personality) != PER_LINUX32)	\
> -		set_personality(PER_LINUX);			\
> +		set_personality(PER_LINUX |			\
> +			(current->personality & PER_INHERIT));	\

Couldn't we use ~PER_MASK here instead of PER_INHERIT?  That would
mean we wouldn't have to modify include/linux/personality.h, and we
wouldn't have to keep updating PER_INHERIT as more flags get added.

(Nice patch description, BTW.  Thanks.)

Paul.
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