linux-kernel - Re: [patches] [PATCH] [1/58] x86: Always flush pages in change_page

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: <200708061236.59195.ak@suse.de>
Date:	Mon, 6 Aug 2007 12:36:59 +0200
From:	Andi Kleen <ak@...e.de>
To:	"Jan Beulich" <jbeulich@...ell.com>
Cc:	linux-kernel@...r.kernel.org, patches@...-64.org
Subject: Re: [patches] [PATCH] [1/58] x86: Always flush pages in change_page_attr

On Monday 06 August 2007 12:15:01 Jan Beulich wrote:
> But that is still wrong - you're again flushing the page table page rather than
> the data one. Fixing this was the purpose of the patch I had sent, plus the
> broken reference counting used by the reversion logic. Jan

True. The problem is that we can't necessarily use the LRU list_head of the data
pages though; e.g. when the page is mapped to user space.

I guess we might need to go back to wbinvd again.

What was the remaining problem of the reference counting? 

-Andi

-
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/