From: One Thousand Gnomes <gnomes@lxorguk.ukuu.org.uk>
To: Ricardo Neri <ricardo.neri-calderon@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
X86 ML <x86@kernel.org>,
"linux-doc@vger.kernel.org" <linux-doc@vger.kernel.org>,
Andy Lutomirski <luto@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Borislav Petkov <bp@suse.de>, Brian Gerst <brgerst@gmail.com>,
Chen Yucong <slaoub@gmail.com>,
Chris Metcalf <cmetcalf@mellanox.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
Fenghua Yu <fenghua.yu@intel.com>, Huang Rui <ray.huang@amd.com>,
Jiri Slaby <jslaby@suse.cz>, Jonathan Corbet <corbet@lwn.net>,
"Michael S . Tsirkin" <mst@redhat.com>,
P
Subject: Re: [PATCH 0/4] x86: enable User-Mode Instruction Prevention
Date: Mon, 14 Nov 2016 10:59:11 +0000 [thread overview]
Message-ID: <20161114105911.62a6821c@lxorguk.ukuu.org.uk> (raw)
In-Reply-To: <1478760361.2551.21.camel@ranerica-desktop>
> I took a closer look at the dosemu code. It appears that it does not
That doesn't tell you want DOS itself will try and do...
> purposely utilize SGDT to obtain the descriptor table while in vm86. It
> does use SGDT (in protected mode) to emulate certain functionality such
> as the Virtual xxx Driver. In such a case, UMIP needs to be disabled.
> However, this code seems to be disabled [1]. dosemu includes an i386
> emulator that in some cases uses the actual instructions of the host
> system. In such cases, UMIP might be needed to be disabled.
Is anyone actually still using DOSemu these days or are people all
using DOSbox ?
Alan
next prev parent reply other threads:[~2016-11-14 10:59 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1478585533-19406-1-git-send-email-ricardo.neri-calderon@linux.intel.com>
[not found] ` <20161108131600.GF3117@twins.programming.kicks-ass.net>
[not found] ` <CALCETrV+c4Rw9zbB3=Jc2F6jtxib3prxNqMXgnUSyMc5QnU9fA@mail.gmail.com>
[not found] ` <1478665889.2533.8.camel@ranerica-desktop>
[not found] ` <CALCETrUcfTkXtXgh8jNpp-RO2qtXeBJv4mhePXoH875cuJidOQ@mail.gmail.com>
2016-11-10 6:46 ` [PATCH 0/4] x86: enable User-Mode Instruction Prevention Ricardo Neri
2016-11-10 8:52 ` Stas Sergeev
2016-11-11 4:14 ` Ricardo Neri
2016-11-11 20:51 ` Stas Sergeev
2016-11-12 1:29 ` Ricardo Neri
2016-11-14 10:59 ` One Thousand Gnomes [this message]
2016-11-14 18:36 ` Harald Arnesen
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