From: Borislav Petkov <bp@alien8.de>
To: "H. Peter Anvin" <hpa@linux.intel.com>
Cc: Dave Hansen <dave@sr71.net>,
linux-kernel@vger.kernel.org, penguin-kernel@i-love.sakura.ne.jp,
x86@kernel.org, akpm@linux-foundation.org,
suresh.b.siddha@intel.com, khlebnikov@openvz.org,
bhelgaas@google.com
Subject: Re: [PATCH] do not try to sync identity map for non-mapped pages
Date: Sun, 7 Apr 2013 19:25:45 +0200 [thread overview]
Message-ID: <20130407172545.GF31299@pd.tnic> (raw)
In-Reply-To: <51619FFF.30705@linux.intel.com>
On Sun, Apr 07, 2013 at 09:34:07AM -0700, H. Peter Anvin wrote:
> We shouldn't, no. /dev/mem really needs to be fixed along a bunch of
> axes. Yes, it is privileged and extra creepy, but it should either
> work or it should fail cleanly.
Can't we filter out accesses through /dev/mem and not BUG_ON in
__phys_addr() if they come through /dev/mem? Simply fail cleanly. No
idea whether we'll break something still reading /dev/mem though.
--
Regards/Gruss,
Boris.
Sent from a fat crate under my desk. Formatting is fine.
--
next prev parent reply other threads:[~2013-04-07 17:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-07 16:31 [PATCH] do not try to sync identity map for non-mapped pages Dave Hansen
2013-03-07 21:59 ` [tip:x86/urgent] x86: Do " tip-bot for Dave Hansen
2013-03-07 22:05 ` [PATCH] do " Tetsuo Handa
2013-03-07 22:13 ` H. Peter Anvin
2013-04-07 13:33 ` Borislav Petkov
2013-04-07 16:34 ` H. Peter Anvin
2013-04-07 17:25 ` Borislav Petkov [this message]
2013-04-08 20:33 ` Dave Hansen
-- strict thread matches above, loose matches on Subject: below --
2013-03-06 23:10 Dave Hansen
2013-03-07 10:19 ` Tetsuo Handa
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