From: David Miller <davem@davemloft.net>
To: ak@muc.de
Cc: virtualization@lists.osdl.org, zach@vmware.com,
rusty@rustcorp.com.au, paulus@samba.org, sfr@canb.auug.org.au,
akpm@linux-foundation.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 6/10] lguest code: the little linux hypervisor.
Date: Fri, 09 Feb 2007 14:29:12 -0800 (PST) [thread overview]
Message-ID: <20070209.142912.38710040.davem@davemloft.net> (raw)
In-Reply-To: <200702091250.06482.ak@muc.de>
From: Andi Kleen <ak@muc.de>
Date: Fri, 9 Feb 2007 12:50:06 +0100
>
> > Yes, it is a bit, umm, innovative. If it is going to be kept, even if
> > just for devel logging, you should disable interrupts around it.
> > Changing segments is not a normal thing to do.
>
> Actually that wouldn't be needed because interrupts are not allowed to do any
> user accesses. And contrary to the name it doesn't actually change
> the segment registers, only state used by *_user.
That's right and we use this construct all throughout the
syscall compatibility layer for 64-bit platforms.
next prev parent reply other threads:[~2007-02-09 22:29 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-09 9:11 [PATCH 0/10] lguest Rusty Russell
2007-02-09 9:11 ` Rusty Russell
2007-02-09 9:14 ` [PATCH 1/10] lguest: Don't rely on last-linked fallthru when no paravirt handler Rusty Russell
2007-02-09 9:15 ` [PATCH 2/10] lguest: Export symbols for lguest as a module Rusty Russell
2007-02-09 9:32 ` Andi Kleen
2007-02-09 12:06 ` Rusty Russell
2007-02-09 13:58 ` Andi Kleen
2007-02-10 11:39 ` Rusty Russell
2007-02-09 9:17 ` [PATCH 3/10] lguest: Expose get_futex_key, get_key_refs and drop_key_refs Rusty Russell
2007-02-09 9:18 ` [PATCH 4/10] lguest: Initialize esp0 properly all the time Rusty Russell
2007-02-09 9:19 ` [PATCH 5/10] Make hvc_console.c compile on non-PowerPC Rusty Russell
2007-02-09 9:19 ` Rusty Russell
2007-02-09 9:20 ` [PATCH 6/10] lguest code: the little linux hypervisor Rusty Russell
2007-02-09 9:22 ` [PATCH 7/10] lguest: Simple lguest network driver Rusty Russell
2007-02-09 9:23 ` [PATCH 8/10] lguest: console driver Rusty Russell
2007-02-09 9:24 ` [PATCH 9/10] lguest: block driver Rusty Russell
2007-02-09 9:25 ` [PATCH 10/10] lguest: documentatation including example launcher Rusty Russell
2007-02-09 9:35 ` [PATCH 6/10] lguest code: the little linux hypervisor Andrew Morton
2007-02-09 11:00 ` Rusty Russell
2007-02-09 11:13 ` Zachary Amsden
2007-02-09 11:50 ` Andi Kleen
2007-02-09 11:54 ` Zachary Amsden
2007-02-09 11:57 ` Andi Kleen
2007-02-09 12:08 ` Zachary Amsden
2007-02-09 22:29 ` David Miller [this message]
2007-02-09 10:09 ` Andi Kleen
2007-02-09 12:39 ` Rusty Russell
2007-02-09 13:57 ` Andi Kleen
2007-02-09 15:01 ` Rusty Russell
2007-02-09 14:17 ` Sam Ravnborg
2007-02-09 15:23 ` Rusty Russell
2007-02-12 13:34 ` [q] kbuild for private asm-offsets (Re: [PATCH 6/10] lguest code: the little linux hypervisor.) Oleg Verych
2007-02-12 17:24 ` Andi Kleen
2007-02-12 21:41 ` Sam Ravnborg
2007-02-12 23:41 ` Rusty Russell
2007-02-13 3:10 ` Oleg Verych
2007-02-13 3:10 ` Oleg Verych
2007-02-16 15:55 ` [pp] kbuild: lguest with private asm-offsets (and some bloat) Oleg Verych
2007-02-16 15:59 ` [pp] kbuild: asm-offsets generalized Oleg Verych
2007-02-16 18:56 ` Sam Ravnborg
2007-02-16 21:56 ` Oleg Verych
2007-02-17 4:43 ` Rusty Russell
2007-02-17 5:33 ` Oleg Verych
2007-04-01 20:42 ` Sam Ravnborg
2007-04-01 21:08 ` Oleg Verych
2007-04-01 21:03 ` Sam Ravnborg
2007-02-09 10:55 ` [PATCH 6a/10] lguest: Config and headers Rusty Russell
2007-02-09 10:56 ` [PATCH 6b/10] lguest: the host code (lg.ko) Rusty Russell
2007-02-09 10:57 ` [PATCH 6c/10] lguest: the guest code Rusty Russell
2007-02-09 10:58 ` [PATCH 6d/10] lguest: the Makefiles Rusty Russell
2007-02-09 17:06 ` [PATCH 6c/10] lguest: the guest code Len Brown
2007-02-09 17:14 ` James Morris
2007-02-09 17:49 ` Len Brown
2007-02-09 23:48 ` [PATCH 11/10] lguest: use disable_acpi() Rusty Russell
2007-02-09 9:31 ` [PATCH 1/10] lguest: Don't rely on last-linked fallthru when no paravirt handler Andi Kleen
2007-02-09 11:52 ` Rusty Russell
2007-02-09 20:49 ` Jeremy Fitzhardinge
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