linux-kernel - Re: [PATCH] Add a text

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Message-ID: <20131127222104.GA748@pd.tnic>
Date:	Wed, 27 Nov 2013 23:21:04 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andy Lutomirski <luto@...capital.net>,
	Andi Kleen <andi@...stfloor.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Andi Kleen <ak@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>
Subject: Re: [PATCH] Add a text_poke syscall v2

On Wed, Nov 27, 2013 at 02:02:50PM -0800, H. Peter Anvin wrote:
> For the record, this is the entire patch necessary to do the
> sync_cores() system call -- and no potential interactions with security
> frameworks or whatnot, simply because no security-sensitive operations
> are performed of any kind.
> 
> Comments/opinions appreciated.

And we do this in the kernel not because userspace can't execute
sync_core() aka CPUID but because for userspace it is hard to IPI all
cores easily?

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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