From: Andi Kleen <ak@muc.de>
To: virtualization@lists.osdl.org
Cc: Andrew Morton <akpm@osdl.org>, Chris Wright <chrisw@sous-sol.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/4] x86 paravirt_ops: paravirt_desc.h for native descriptor ops.
Date: Mon, 7 Aug 2006 07:40:23 +0200 [thread overview]
Message-ID: <200608070740.23840.ak@muc.de> (raw)
In-Reply-To: <1154925943.21647.32.camel@localhost.localdomain>
On Monday 07 August 2006 06:45, Rusty Russell wrote:
> Unfortunately, due to include cycles, we can't put these in
> paravirt.h: we use a separate header for these.
>
> The implementation comes from Zach's [RFC, PATCH 10/24] i386 Vmi descriptor changes:
>
> Descriptor and trap table cleanups. Add cleanly written accessors for
> IDT and GDT gates so the subarch may override them. Note that this
> allows the hypervisor to transparently tweak the DPL of the descriptors
> as well as the RPL of segments in those descriptors, with no unnecessary
> kernel code modification. It also allows the hypervisor implementation
> of the VMI to tweak the gates, allowing for custom exception frames or
> extra layers of indirection above the guest fault / IRQ handlers.
Nice cleanup. The old assembly mess was ripe to be killed for a long time.
-Andi
WARNING: multiple messages have this Message-ID (diff)
From: Andi Kleen <ak@muc.de>
To: virtualization@lists.osdl.org
Cc: Rusty Russell <rusty@rustcorp.com.au>,
Andrew Morton <akpm@osdl.org>, Chris Wright <chrisw@sous-sol.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 2/4] x86 paravirt_ops: paravirt_desc.h for native descriptor ops.
Date: Mon, 7 Aug 2006 07:40:23 +0200 [thread overview]
Message-ID: <200608070740.23840.ak@muc.de> (raw)
In-Reply-To: <1154925943.21647.32.camel@localhost.localdomain>
On Monday 07 August 2006 06:45, Rusty Russell wrote:
> Unfortunately, due to include cycles, we can't put these in
> paravirt.h: we use a separate header for these.
>
> The implementation comes from Zach's [RFC, PATCH 10/24] i386 Vmi descriptor changes:
>
> Descriptor and trap table cleanups. Add cleanly written accessors for
> IDT and GDT gates so the subarch may override them. Note that this
> allows the hypervisor to transparently tweak the DPL of the descriptors
> as well as the RPL of segments in those descriptors, with no unnecessary
> kernel code modification. It also allows the hypervisor implementation
> of the VMI to tweak the gates, allowing for custom exception frames or
> extra layers of indirection above the guest fault / IRQ handlers.
Nice cleanup. The old assembly mess was ripe to be killed for a long time.
-Andi
next prev parent reply other threads:[~2006-08-07 5:40 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-07 4:43 [PATCH 1/4] x86 paravirt_ops: create no_paravirt.h for native ops Rusty Russell
2006-08-07 4:45 ` [PATCH 2/4] x86 paravirt_ops: paravirt_desc.h for native descriptor ops Rusty Russell
2006-08-07 4:45 ` Rusty Russell
2006-08-07 4:47 ` [PATCH 3/4] x86 paravirt_ops: implementation of paravirt_ops Rusty Russell
2006-08-07 4:47 ` Rusty Russell
2006-08-07 4:48 ` [PATCH 4/4] x86 paravirt_ops: binary patching infrastructure Rusty Russell
2006-08-07 4:48 ` Rusty Russell
2006-08-07 5:14 ` Rusty Russell
2006-08-07 5:38 ` Andi Kleen
2006-08-07 5:56 ` Jeremy Fitzhardinge
2006-08-07 5:56 ` Jeremy Fitzhardinge
2006-08-07 5:39 ` [PATCH 3/4] x86 paravirt_ops: implementation of paravirt_ops Andi Kleen
2006-08-07 5:56 ` Jeremy Fitzhardinge
2006-08-07 5:56 ` Jeremy Fitzhardinge
2006-08-07 6:13 ` Rusty Russell
2006-08-07 6:20 ` Andi Kleen
2006-08-07 6:20 ` Andi Kleen
2006-08-07 7:27 ` Rusty Russell
2006-08-07 5:40 ` Andi Kleen [this message]
2006-08-07 5:40 ` [PATCH 2/4] x86 paravirt_ops: paravirt_desc.h for native descriptor ops Andi Kleen
2006-08-07 7:50 ` Rusty Russell
2006-08-07 7:50 ` Rusty Russell
2006-08-07 8:53 ` Andi Kleen
2006-08-07 17:19 ` Dave Jones
2006-08-07 17:19 ` Dave Jones
2006-08-07 5:22 ` [PATCH 1/4] x86 paravirt_ops: create no_paravirt.h for native ops Jeremy Fitzhardinge
2006-08-07 5:30 ` Andi Kleen
2006-08-07 5:43 ` Jeremy Fitzhardinge
2006-08-07 6:02 ` Andi Kleen
2006-08-07 6:23 ` Jeremy Fitzhardinge
2006-08-07 6:03 ` Rusty Russell
2006-08-07 6:16 ` Andi Kleen
2006-08-07 6:04 ` Rusty Russell
2006-08-07 6:04 ` Rusty Russell
2006-08-07 6:17 ` Andi Kleen
2006-08-07 6:17 ` Andi Kleen
2006-08-07 6:27 ` Muli Ben-Yehuda
2006-08-07 6:27 ` Muli Ben-Yehuda
2006-08-07 7:34 ` Jan Engelhardt
2006-08-07 8:40 ` Muli Ben-Yehuda
2006-08-07 8:40 ` Muli Ben-Yehuda
2006-08-07 17:54 ` Jan Engelhardt
2006-08-07 17:54 ` Jan Engelhardt
2006-08-07 20:51 ` Zachary Amsden
2006-08-07 20:51 ` Zachary Amsden
2006-08-08 1:59 ` Andi Kleen
2006-08-08 1:59 ` Andi Kleen
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