From: Rusty Russell <rusty@rustcorp.com.au> To: Zachary Amsden <zach@vmware.com> Cc: Christoph Lameter <clameter@sgi.com>, JAndi Kleen <ak@muc.de>, Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org, virtualization@lists.osdl.org, xen-devel@lists.xensource.com, Chris Wright <chrisw@sous-sol.org> Subject: Re: [patch 00/21] Xen-paravirt: Xen guest implementation for paravirt_ops interface Date: Sat, 17 Feb 2007 16:05:42 +1100 [thread overview] Message-ID: <1171688742.18876.69.camel@localhost.localdomain> (raw) In-Reply-To: <45D626BB.20007@vmware.com> On Fri, 2007-02-16 at 13:48 -0800, Zachary Amsden wrote: > Christoph Lameter wrote: > > It still seems to be implemented for Xen and not to support a variety of > > page table methods in paravirt ops. > > Yes, but that is just because the Xen hooks happens to be near the last > part of the merge. VMI required some special hooks, as do both Xen and > lhype (I think ... Rusty can correct me if lhype's puppy's have > precluded the addition of new hooks). lguest was supposed to be a demonstration of paravirt_ops, so it shouldn't have added any. But note that I did change some other things, such as the esp0 initialization for the swapper. Puppies are still alive and well. Although Andi not pushing into 2.6.21 (yet?) made puppies sad 8( > Xen page table handling is very > different, mostly it is trap and emulate so writable page tables can > work, which means they don't always issue hypercalls for PTE updates, > although they do have that option, should the hypervisor MMU model > change, or performance concerns prompt a different model (or perhaps, > migration?) Yes, Xen really like their direct pagetable stuff. I'm a traditionalist, myself, but it did require some expansion of paravirt_ops. KVM might well want more, although from here it's more likely we'll move some of the hooks up the stack a little IMHO. Cheers, Rusty.
WARNING: multiple messages have this Message-ID (diff)
From: Rusty Russell <rusty@rustcorp.com.au> To: Zachary Amsden <zach@vmware.com> Cc: Chris Wright <chrisw@sous-sol.org>, virtualization@lists.osdl.org, xen-devel@lists.xensource.com, JAndi Kleen <ak@muc.de>, Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org, Christoph Lameter <clameter@sgi.com> Subject: Re: [patch 00/21] Xen-paravirt: Xen guest implementation for paravirt_ops interface Date: Sat, 17 Feb 2007 16:05:42 +1100 [thread overview] Message-ID: <1171688742.18876.69.camel@localhost.localdomain> (raw) In-Reply-To: <45D626BB.20007@vmware.com> On Fri, 2007-02-16 at 13:48 -0800, Zachary Amsden wrote: > Christoph Lameter wrote: > > It still seems to be implemented for Xen and not to support a variety of > > page table methods in paravirt ops. > > Yes, but that is just because the Xen hooks happens to be near the last > part of the merge. VMI required some special hooks, as do both Xen and > lhype (I think ... Rusty can correct me if lhype's puppy's have > precluded the addition of new hooks). lguest was supposed to be a demonstration of paravirt_ops, so it shouldn't have added any. But note that I did change some other things, such as the esp0 initialization for the swapper. Puppies are still alive and well. Although Andi not pushing into 2.6.21 (yet?) made puppies sad 8( > Xen page table handling is very > different, mostly it is trap and emulate so writable page tables can > work, which means they don't always issue hypercalls for PTE updates, > although they do have that option, should the hypervisor MMU model > change, or performance concerns prompt a different model (or perhaps, > migration?) Yes, Xen really like their direct pagetable stuff. I'm a traditionalist, myself, but it did require some expansion of paravirt_ops. KVM might well want more, although from here it's more likely we'll move some of the hooks up the stack a little IMHO. Cheers, Rusty.
next prev parent reply other threads:[~2007-02-17 5:06 UTC|newest] Thread overview: 194+ messages / expand[flat|nested] mbox.gz Atom feed top 2007-02-16 2:24 [patch 00/21] Xen-paravirt: Xen guest implementation for paravirt_ops interface Jeremy Fitzhardinge 2007-02-16 2:24 ` Jeremy Fitzhardinge 2007-02-16 2:24 ` [patch 01/21] Xen-paravirt: Fix typo in sync_constant_test_bit()s name Jeremy Fitzhardinge 2007-02-16 2:24 ` Jeremy Fitzhardinge 2007-02-16 2:24 ` [patch 02/21] Xen-paravirt: ignore vgacon if hardware not present Jeremy Fitzhardinge 2007-02-16 2:24 ` Jeremy Fitzhardinge 2007-02-16 2:24 ` [patch 03/21] Xen-paravirt: Add pagetable accessors to pack and unpack pagetable entries Jeremy Fitzhardinge 2007-02-16 2:24 ` Jeremy Fitzhardinge 2007-02-16 2:24 ` [patch 04/21] Xen-paravirt: =================================================================== Jeremy Fitzhardinge 2007-02-16 2:24 ` Jeremy Fitzhardinge 2007-02-16 9:12 ` Andi Kleen 2007-02-16 9:12 ` Andi Kleen 2007-02-16 17:32 ` Jeremy Fitzhardinge 2007-02-16 17:32 ` Jeremy Fitzhardinge 2007-02-16 2:24 ` [patch 05/21] Xen-paravirt: paravirt_ops: hooks to set up initial pagetable Jeremy Fitzhardinge 2007-02-16 2:24 ` Jeremy Fitzhardinge 2007-02-16 2:24 ` [patch 06/21] Xen-paravirt: paravirt_ops: allocate a fixmap slot Jeremy Fitzhardinge 2007-02-16 2:24 ` Jeremy Fitzhardinge 2007-02-16 2:24 ` [patch 07/21] Xen-paravirt: remove ctor for pgd cache Jeremy Fitzhardinge 2007-02-16 2:24 ` Jeremy Fitzhardinge 2007-02-16 6:04 ` Zachary Amsden 2007-02-16 6:04 ` Zachary Amsden 2007-02-16 8:39 ` Pekka Enberg 2007-02-16 9:19 ` Nick Piggin 2007-02-16 17:19 ` Jeremy Fitzhardinge 2007-02-16 17:19 ` Jeremy Fitzhardinge 2007-02-16 20:33 ` Christoph Lameter 2007-02-16 23:33 ` Jeremy Fitzhardinge 2007-02-16 23:33 ` Jeremy Fitzhardinge 2007-02-16 2:24 ` [patch 08/21] Xen-paravirt: Allow paravirt backend to choose kernel PMD sharing Jeremy Fitzhardinge 2007-02-16 2:24 ` Jeremy Fitzhardinge 2007-02-16 2:24 ` [patch 09/21] Xen-paravirt: Allow paravirt backend to select PGD allocation alignment Jeremy Fitzhardinge 2007-02-16 2:24 ` Jeremy Fitzhardinge 2007-02-16 2:24 ` [patch 10/21] Xen-paravirt: add hooks to intercept mm creation and destruction Jeremy Fitzhardinge 2007-02-16 2:24 ` Jeremy Fitzhardinge 2007-02-16 6:34 ` Andrew Morton 2007-02-16 6:34 ` Andrew Morton 2007-02-16 6:55 ` Jeremy Fitzhardinge 2007-02-16 6:55 ` Jeremy Fitzhardinge 2007-02-22 20:16 ` Pavel Machek 2007-02-22 20:21 ` Jeremy Fitzhardinge 2007-02-22 20:21 ` Jeremy Fitzhardinge 2007-02-22 20:23 ` Jeremy Fitzhardinge 2007-02-22 20:23 ` Jeremy Fitzhardinge 2007-02-16 2:25 ` [patch 11/21] Xen-paravirt: Add apply_to_page_range() which applies a function to a pte range Jeremy Fitzhardinge 2007-02-16 2:25 ` Jeremy Fitzhardinge 2007-02-16 6:37 ` Andrew Morton 2007-02-16 6:37 ` Andrew Morton 2007-02-16 7:06 ` Jeremy Fitzhardinge 2007-02-16 7:06 ` Jeremy Fitzhardinge 2007-02-16 7:19 ` Andrew Morton 2007-02-16 7:19 ` Andrew Morton 2007-02-16 7:23 ` Jeremy Fitzhardinge 2007-02-16 7:23 ` Jeremy Fitzhardinge 2007-02-16 7:31 ` Nick Piggin 2007-02-16 7:31 ` Nick Piggin 2007-02-16 2:25 ` [patch 12/21] Xen-paravirt: Allocate and free vmalloc areas Jeremy Fitzhardinge 2007-02-16 2:25 ` Jeremy Fitzhardinge 2007-02-16 6:43 ` Andrew Morton 2007-02-16 6:43 ` Andrew Morton 2007-02-16 7:08 ` Jeremy Fitzhardinge 2007-02-16 7:08 ` Jeremy Fitzhardinge 2007-02-16 7:24 ` Andrew Morton 2007-02-16 7:24 ` Andrew Morton 2007-02-16 7:30 ` Jeremy Fitzhardinge 2007-02-16 7:30 ` Jeremy Fitzhardinge 2007-02-16 7:49 ` Andrew Morton 2007-02-16 7:49 ` Andrew Morton 2007-02-16 9:18 ` Andi Kleen 2007-02-16 9:18 ` Andi Kleen 2007-02-16 11:10 ` [Xen-devel] " Keir Fraser 2007-02-16 11:10 ` Keir Fraser 2007-02-16 11:34 ` [Xen-devel] " Andi Kleen 2007-02-16 11:34 ` Andi Kleen 2007-02-16 11:10 ` [Xen-devel] " Keir Fraser 2007-02-16 11:10 ` Keir Fraser 2007-02-16 16:46 ` Jeremy Fitzhardinge 2007-02-16 16:46 ` Jeremy Fitzhardinge 2007-02-16 17:10 ` [Xen-devel] " Keir Fraser 2007-02-16 17:10 ` Keir Fraser 2007-02-16 17:12 ` [Xen-devel] " Keir Fraser 2007-02-16 17:12 ` Keir Fraser 2007-02-16 17:12 ` Keir Fraser 2007-02-16 17:27 ` [Xen-devel] " Jeremy Fitzhardinge 2007-02-16 17:27 ` Jeremy Fitzhardinge 2007-02-16 19:06 ` [Xen-devel] " Keir Fraser 2007-02-16 19:06 ` Keir Fraser 2007-02-16 19:06 ` Keir Fraser 2007-02-16 19:06 ` Keir Fraser 2007-02-16 19:19 ` [Xen-devel] " Keir Fraser 2007-02-16 19:19 ` Keir Fraser 2007-02-16 19:26 ` [Xen-devel] " Jeremy Fitzhardinge 2007-02-16 19:26 ` Jeremy Fitzhardinge 2007-02-16 23:29 ` [Xen-devel] " Keir Fraser 2007-02-16 23:29 ` Keir Fraser 2007-02-16 23:41 ` [Xen-devel] " Jeremy Fitzhardinge 2007-02-16 23:41 ` Jeremy Fitzhardinge 2007-02-16 17:12 ` [Xen-devel] " Keir Fraser 2007-02-16 17:26 ` Hollis Blanchard 2007-02-16 17:26 ` Hollis Blanchard 2007-02-16 17:10 ` [Xen-devel] " Keir Fraser 2007-02-16 17:10 ` Keir Fraser 2007-02-16 7:48 ` Nick Piggin 2007-02-16 2:25 ` [patch 13/21] Xen-paravirt: Add nosegneg capability to the vsyscall page notes Jeremy Fitzhardinge 2007-02-16 2:25 ` Jeremy Fitzhardinge 2007-02-16 6:06 ` Zachary Amsden 2007-02-16 6:06 ` Zachary Amsden 2007-02-16 2:25 ` [patch 14/21] Xen-paravirt: Add XEN config options and disable unsupported config options Jeremy Fitzhardinge 2007-02-16 2:25 ` Jeremy Fitzhardinge 2007-02-16 6:14 ` Dan Hecht 2007-02-16 7:04 ` Jeremy Fitzhardinge 2007-02-16 7:04 ` Jeremy Fitzhardinge 2007-02-16 7:52 ` Dan Hecht 2007-02-16 8:05 ` Jeremy Fitzhardinge 2007-02-16 8:05 ` Jeremy Fitzhardinge 2007-02-16 8:37 ` Dan Hecht 2007-02-16 10:49 ` Keir Fraser 2007-02-16 10:49 ` Keir Fraser 2007-02-16 10:49 ` Keir Fraser 2007-02-16 10:49 ` Keir Fraser 2007-02-16 7:06 ` Andrew Morton 2007-02-16 7:06 ` Andrew Morton 2007-02-16 7:25 ` Jeremy Fitzhardinge 2007-02-16 7:25 ` Jeremy Fitzhardinge 2007-02-16 10:09 ` Keir Fraser 2007-02-16 10:09 ` Keir Fraser 2007-02-16 10:19 ` [Xen-devel] " Zachary Amsden 2007-02-16 10:19 ` Zachary Amsden 2007-02-16 10:44 ` [Xen-devel] " Keir Fraser 2007-02-16 10:44 ` Keir Fraser 2007-02-16 10:55 ` Zachary Amsden 2007-02-16 10:55 ` Zachary Amsden 2007-02-17 4:04 ` [Xen-devel] " Rusty Russell 2007-02-17 4:04 ` Rusty Russell 2007-02-16 6:15 ` Zachary Amsden 2007-02-16 6:15 ` Zachary Amsden 2007-02-16 7:33 ` Eric W. Biederman 2007-02-16 7:33 ` Eric W. Biederman 2007-02-16 8:14 ` Ian Campbell 2007-02-16 8:14 ` Ian Campbell 2007-02-16 8:24 ` Eric W. Biederman 2007-02-16 8:24 ` Eric W. Biederman 2007-02-16 8:31 ` Zachary Amsden 2007-02-16 8:31 ` Zachary Amsden 2007-02-16 13:53 ` [Xen-devel] " Gerd Hoffmann 2007-02-16 13:53 ` Gerd Hoffmann 2007-02-18 11:32 ` Avi Kivity 2007-02-18 11:32 ` Avi Kivity 2007-02-16 2:25 ` [patch 15/21] Xen-paravirt: Add Xen interface header files Jeremy Fitzhardinge 2007-02-16 2:25 ` [patch 16/21] Xen-paravirt: Core Xen implementation Jeremy Fitzhardinge 2007-02-16 2:25 ` Jeremy Fitzhardinge 2007-02-16 2:25 ` [patch 17/21] Xen-paravirt: Add the Xen virtual console driver Jeremy Fitzhardinge 2007-02-16 2:25 ` Jeremy Fitzhardinge 2007-02-16 6:48 ` Andrew Morton 2007-02-16 6:48 ` Andrew Morton 2007-02-16 2:25 ` [patch 18/21] Xen-paravirt: Add Xen grant table support Jeremy Fitzhardinge 2007-02-16 2:25 ` Jeremy Fitzhardinge 2007-02-16 6:52 ` Andrew Morton 2007-02-16 6:52 ` Andrew Morton 2007-02-16 6:58 ` Jeremy Fitzhardinge 2007-02-16 6:58 ` Jeremy Fitzhardinge 2007-02-16 2:25 ` [patch 19/21] Xen-paravirt: Add the Xenbus sysfs and virtual device hotplug driver Jeremy Fitzhardinge 2007-02-16 2:25 ` Jeremy Fitzhardinge 2007-02-16 2:25 ` [patch 20/21] Xen-paravirt: Add Xen virtual block device driver Jeremy Fitzhardinge 2007-02-16 2:25 ` Jeremy Fitzhardinge 2007-02-16 2:25 ` [patch 21/21] Xen-paravirt: Add the Xen virtual network " Jeremy Fitzhardinge 2007-02-16 2:25 ` Jeremy Fitzhardinge 2007-02-16 6:59 ` [patch 00/21] Xen-paravirt: Xen guest implementation for paravirt_ops interface Andrew Morton 2007-02-16 6:59 ` Andrew Morton 2007-02-16 7:20 ` Jeremy Fitzhardinge 2007-02-16 7:20 ` Jeremy Fitzhardinge 2007-02-16 20:49 ` Christoph Lameter 2007-02-16 21:04 ` Zachary Amsden 2007-02-16 21:04 ` Zachary Amsden 2007-02-16 21:13 ` Christoph Lameter 2007-02-16 21:48 ` Zachary Amsden 2007-02-16 21:48 ` Zachary Amsden 2007-02-16 21:59 ` Christoph Lameter 2007-02-16 21:59 ` Christoph Lameter 2007-02-16 22:10 ` Zachary Amsden 2007-02-17 13:51 ` Andi Kleen 2007-02-17 13:51 ` Andi Kleen 2007-02-21 18:37 ` Christoph Lameter 2007-02-21 18:55 ` Zachary Amsden 2007-02-21 18:55 ` Zachary Amsden 2007-02-21 20:02 ` Jeremy Fitzhardinge 2007-02-21 20:02 ` Jeremy Fitzhardinge 2007-02-17 5:05 ` Rusty Russell [this message] 2007-02-17 5:05 ` Rusty Russell 2007-02-16 23:49 ` Jeremy Fitzhardinge 2007-02-16 23:49 ` Jeremy Fitzhardinge 2007-02-17 4:58 ` Rusty Russell 2007-02-17 4:58 ` Rusty Russell -- strict thread matches above, loose matches on Subject: below -- 2007-02-13 22:17 Jeremy Fitzhardinge
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