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From: Rusty Russell <rusty@rustcorp.com.au>
To: Avi Kivity <avi@qumranet.com>
Cc: lguest@ozlabs.org, Dor Laor <dor.laor@qumranet.com>,
	virtualization@lists.linux-foundation.org
Subject: Re: [patch 37/43] lguest: Virtio helper routines for a descriptor ringbuffer implementation
Date: Tue, 02 Oct 2007 14:21:07 +1000	[thread overview]
Message-ID: <1191298867.6979.60.camel@localhost.localdomain> (raw)
In-Reply-To: <4700E45E.6080505@qumranet.com>

On Mon, 2007-10-01 at 14:13 +0200, Avi Kivity wrote:
> Rusty Russell wrote:
> > Yes, but this is what lguest is for, to play without fixing an ABI.  I
> > fully expect incompatible tweaks before KVM causes the ABI to nail down.
> 
> I'm worried about users tearing down the "caution, experimental ABI,
> will invalidate warranty" sticker from the package, selecting
> CONFIG_EXPERIMENTAL, CONFIG_I_REALLY_MEAN_ITS_EXPERIMENTAL, and
> CONFIG_I_DONT_CARE_IF_THIS_BLOWS_UP, not reading your blog, and running
> 2.6.24 guests on top of 2.6.25 or vice versa.
> 
> I want the module not to load instead of the guest blowing up.

Well, this is the guest side we're talking about.  We can use some bogus
vendor ID for the experimental devices so that they simply won't be
found by the final drivers.

Cheers,
Rusty.

  reply	other threads:[~2007-10-02  4:21 UTC|newest]

Thread overview: 65+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-26  6:36 [patch 00/43] lguest: Patches for 2.6.24 (and patchbomb test) rusty
2007-09-26  6:36 ` [patch 01/43] lguest: lguest example launcher truncates block device file to 0 length on problems rusty
2007-09-26  6:36 ` [patch 02/43] lguest: fix modules oopsing in lguest guests rusty
2007-09-26  6:36 ` [patch 03/43] lguest: Normalize config options for guest support rusty
2007-09-26  6:36 ` [patch 04/43] lguest: Consolidate host virtualization support under Virtualization menu rusty
2007-09-26  6:36 ` [patch 05/43] lguest: Example launcher should include asm/e820.h instead of asm-i386/ rusty
2007-09-26  6:36 ` [patch 06/43] lguest: turn err into errx in lguest call sites rusty
2007-09-26  6:36 ` [patch 07/43] lguest: Use copy_to_user() not put_user for struct timespec rusty
2007-09-26  6:36 ` [patch 08/43] lguest: Lguest currently depends on 32-bit x86, not just x86 rusty
2007-09-26  6:36 ` [patch 09/43] lguest: lguest.txt update rusty
2007-09-26  6:36 ` [patch 10/43] lguest: Make lguest_launcher.h types userspace-friendly rusty
2007-09-26  6:36 ` [patch 11/43] lguest: lguest_devices belongs in lguest_bus.c: its not i386-specific rusty
2007-09-26  6:36 ` [patch 12/43] lguest: Only start khvcd when someone uses hvc_console driver rusty
2007-09-26  6:36 ` [patch 13/43] lguest: Move lguest hcalls to arch-specific header rusty
2007-09-26  6:36 ` [patch 14/43] lguest: Move lguest guest support to arch/i386 where it logically belongs rusty
2007-09-26  6:36 ` [patch 15/43] lguest: Rename switcher.S to i386_switcher.S, since its very i386-specific rusty
2007-09-26  6:36 ` [patch 16/43] lguest: Accept elf files that are valid but have sections that can not be mmaped for some reason rusty
2007-09-26  6:36 ` [patch 17/43] lguest: Introduce guest mem offset, static link example launcher rusty
2007-09-26  6:36 ` [patch 18/43] lguest: Remove fixed limit on number of guests, and lguests array rusty
2007-09-26  6:36 ` [patch 19/43] lguest: Make shadow IDT a complete IDT with 256 entries rusty
2007-09-26  6:36 ` [patch 20/43] lguest: Move i386 part of core.c to i386_core.c rusty
2007-09-26  6:36 ` [patch 21/43] lguest: Reorder guest saved regs to match hyperall order rusty
2007-09-26  6:36 ` [patch 22/43] lguest: Introduce "hcall" pointer to indicate pending hypercall rusty
2007-09-26  6:36 ` [patch 23/43] lguest: Make hypercalls arch-independent rusty
2007-09-26  6:36 ` [patch 24/43] lguest: Change example launcher to use unsigned long not u32 rusty
2007-09-26  6:36 ` [patch 25/43] lguest: Move register setup into i386_core.c rusty
2007-09-26  6:36 ` [patch 26/43] lguest: guest.h declares a struct timespec, make it include linux/time.h rusty
2007-09-26  6:36 ` [patch 27/43] lguest: Pagetables to use normal kernel types rusty
2007-09-26  6:36 ` [patch 28/43] lguest: Rename "cr3" to "gpgdir" to avoid x86-specific naming rusty
2007-09-26  6:36 ` [patch 29/43] lguest: Introduce "used_vectors" bitmap which can be used to reserve vectors rusty
2007-09-26  6:36 ` [patch 30/43] lguest: Allow guest to specify syscall vector to use rusty
2007-09-26  6:36 ` [patch 31/43] lguest: Boot with virtual == physical to get closer to native Linux rusty
2007-09-27  0:12   ` Jeremy Fitzhardinge
2007-09-27  0:53     ` [Lguest] " ron minnich
2007-09-29 13:02     ` Rusty Russell
2007-09-26  6:36 ` [patch 32/43] lguest: Virtio interface rusty
2007-10-02  9:03   ` Christian Borntraeger
2007-10-02 12:00     ` Rusty Russell
2007-10-10  8:50   ` Christian Borntraeger
2007-10-10 13:43     ` Glauber de Oliveira Costa
2007-10-10 14:24       ` Arnd Bergmann
2007-10-10 15:31         ` Eric Van Hensbergen
2007-10-10 16:00           ` Arnd Bergmann
2007-10-11 14:17     ` Rusty Russell
2007-09-26  6:36 ` [patch 33/43] lguest: Net driver using virtio rusty
2007-09-26  6:36 ` [patch 34/43] lguest: Block " rusty
2007-09-28 11:32   ` [Lguest] " Chris Malley
2007-09-29 13:26     ` Rusty Russell
2007-09-26  6:36 ` [patch 35/43] lguest: Virtio console driver rusty
2007-09-26  6:36 ` [patch 36/43] lguest: Module autoprobing support for virtio drivers rusty
2007-09-26  6:36 ` [patch 37/43] lguest: Virtio helper routines for a descriptor ringbuffer implementation rusty
2007-09-30 17:03   ` Avi Kivity
2007-10-01 12:03     ` Rusty Russell
2007-10-01 12:13       ` Avi Kivity
2007-10-02  4:21         ` Rusty Russell [this message]
2007-10-02  6:02           ` Avi Kivity
2007-09-26  6:36 ` [patch 38/43] lguest: This gets rid of the lguest bus, drivers and DMA mechanism, to make way for a generic virtio mechanism rusty
2007-09-26  6:36 ` [patch 39/43] lguest: This patch gets rid of the old lguest host I/O infrastructure and replaces it with a single hypercall "LHCALL_NOTIFY" which takes an address rusty
2007-09-26  6:36 ` [patch 40/43] lguest: Lguest support for Virtio rusty
2007-09-26  6:36 ` [patch 41/43] lguest: Update example launcher for virtio rusty
2007-09-26  6:37 ` [patch 42/43] lguest: Example launcher handle guests not being ready for input rusty
2007-09-26  6:37 ` [patch 43/43] lguest: generalize lgread_u32/lgwrite_u32 rusty
2007-09-27 13:04   ` [Lguest] " Chris Malley
2007-09-29 13:29     ` Rusty Russell
2007-10-09 20:25 ` [Lguest] [patch 00/43] lguest: Patches for 2.6.24 (and patchbomb test) Eric Van Hensbergen

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