linux-kernel - Re: [PATCH -mm 00/43] user_regset framework -- arch maintainers take note!

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: <20071220130042.GA28770@elte.hu>
Date:	Thu, 20 Dec 2007 14:00:42 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Roland McGrath <roland@...hat.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org
Subject: Re: [PATCH -mm 00/43] user_regset framework -- arch maintainers
	take note!


* Roland McGrath <roland@...hat.com> wrote:

> This is a large series of patches, but there are only a couple that 
> you need to read in detail to know how to get started on cleaning up 
> your arch code (1, 4, 6).
> 
> user_regset is a new kernel-internal interface into the arch code for 
> accessing the user-space view of machine-specific state (registers et 
> al--everything machine-specific that is visible via ptrace and the 
> like, or should be).  The idea is that arch code will have just one 
> place it has to support fetching and changing the user-visible machine 
> state of a user thread.  This same interface can be used for writing 
> core dumps, to underlie the implementation of PTRACE_GETREGS, 
> PTRACE_SETREGS, and the like, and by any new set of debugging 
> facilities that might come along.
[...]
> Patches 26 through 43 affect only arch/x86 code.  I have not CC'd 
> these ones to linux-arch.  They include a bunch of cleanup that is 
> specific to the idiosyncracies of the x86 code and isn't interesting 
> as an example for what another arch would do.

thanks Roland - this is a really impressive set of cleanups 
generalizations!

Testing feedback: i've put the x86 and core bits into x86.git and your 
regset series has so far successfully passed a couple of hundred 
iterations of random-qa on 32-bit and 64-bit x86 as well. (with a few 
ptrace tests added to the mix as well) So it's all green as far as 
arch/x86 and core goes :-)

	Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/