Davide Libenzi wrote:
> On Wed, 16 May 2007, Avi Kivity wrote:
>
>
>> IMO doing eventfd_fget() asap is best. I much prefer refcounted pointers to
>> handles in the kernel: it's easier to see what things point to, and there is
>> to context needed for dere
Adam Majer wrote:
> Hi,
>
> I'm using a somewhat "old" kernel with KVM (KVM included in the kernel).
> I think it may be KVM-17 or something like that. Anyway, I got an OOPS
> in the module while attempting to install Windows Server 2003 Standard
> Edition 32-bit.
>
> I just started it with
> kvm
Kamble, Nitin A wrote:
> Hi Avi,
>
> I was playing with KVM while booting SuSE Linux 10.1 on it. And I
> found it was bailing out with #SS fault. I root caused it to the
> address size override opcode (0x67) from a mov instruction from the
> boot loader.
> The attached patch handles the #SS(0)
Makoto Dei wrote:
> Hello,
>
> I have the same problem with Linux which is using isolinux,
> such as Ubuntu. I checked the BIOS in the latest KVM and
> I found that it seemed to be missing the following change.
>
> http://bochs.cvs.sourceforge.net/bochs/bochs/bios/rombios.c?view=log#rev1.172
>
>
Wink Saville wrote:
>> Please provide a link to the livecd you used.
>>
> http://bouncer.gentoo.org/fetch/gentoo-2007.0-livecd/amd64/
>
> I'm using bridging to connect guest to host and use the following
> commands:
>
> 1) qemu-img create -f qcow gentoo-amd64.img 20G
>
> 2) qemu-system-x86_64 . -h
Dong, Eddie wrote:
> Avi Kivity wrote:
>
>>> Here it is.
>>>
>>>
>> It's broken; your binutils is probably too old.
>>
>>
>>
>>> Can u also send me your bootstrap and flat so that I can try here?
>>>
Avi Kivity wrote:
> Dong, Eddie wrote:
>> Avi Kivity wrote:
>>
>>>> Here it is.
>>>>
>>>>
>>> It's broken; your binutils is probably too old.
>>>
>>>
>>>
>>>> Can u also send
Anthony Liguori wrote:
> The cc-option is originally from Linux.
Applied, thanks.
--
error compiling committee.c: too many arguments to function
-
This SF.net email is sponsored by DB2 Express
Download DB2 Express C - the
Fitzhardinge <[EMAIL PROTECTED]>
To: Avi Kivity <[EMAIL PROTECTED]>, Andi Kleen <[EMAIL PROTECTED]>
CC: Andrew Morton <[EMAIL PROTECTED]>, Linux Kernel Mailing
List <[EMAIL PROTECTED]>
When I boot 2.6.22-rc1-mm1 under kvm, but forget to specify a root
Davide Libenzi wrote:
> On Thu, 17 May 2007, Avi Kivity wrote:
>
>
>> Davide Libenzi wrote:
>>
>>> On Wed, 16 May 2007, Avi Kivity wrote:
>>>
>>>
>>>
>>>> IMO doing eventfd_fget() asap is best. I much prefer r
Dong, Eddie wrote:
> Avi:
>
> This patch is to avoid saving and restoring of msr_efer on
> lightweight vmexit.
>
> With this patch, the Kernel build get 10% increasement for
> 64bits on 64 bits,
> and 5-8% increasement for 32bits on 64 bits.
> Vmexit.flat can see ~1185 cycle
Daniel Hecken wrote:
> Hello,
>
> I have an Intel Core 2 Duo running Ubuntu Feisty 2.6.20-15 in 32 Bit
> mode. If I try to compile kvm-trunk ( kvm-24-gfbfe1dc ) and the modules
> from git ( v2.6.22-rc1-gf552bf6 ) I get a few compiler errors and the
> compiler stops.
>
> Please find attached 2 patch
Nakajima, Jun wrote:
> An updated specification (Rev 1.0 update) of Intel(r) virtualization
> technology for Directed I/O is now available on Intel web site:
>
> http://download.intel.com/technology/computing/vptech/Intel(r)_VT_for_Di
> rect_IO.pdf
>
> The specification update includes DMA remapp
Gregory Haskins wrote:
> Hi All,
>
> I was thinking about some of the issues that we are dealing with
> w.r.t. signalling a sleeping userspace (eventfd, signals, etc). I was
> wondering if perhaps we were looking at the problem the wrong way. Can we
> perform halts in the kernel and the
Dimitry Golubovsky wrote:
> Hi,
>
> I am going to use KVM on a headless machine with sound never on (even
> not compiled in the kernel).
>
> I'm just curious if there is a possibility to build the kvm-qemu
> without all this sound/video stuff (or with minimum of it). In
> particular, without alsa a
Gregory Haskins wrote:
> 2) Moved eventfd patch to end of series and dropped it from the public release
> (for now). We dont technically need to signal userspace if PIT is enabled
> since this wakes us up anyway. We can defer the eventfd/in-kernel-halt
> conversation for later.
>
The PIT will
Dong, Eddie wrote:
> Seems a typo leaking our eyes :-(
>
>
> Fixing a typo which mixes X86_64 and CONFIG_X86_64 and block 64
> bits guest now.
>
>
Ouch. Applied & pushed. Thanks.
--
error compiling committee.c: too many arguments to function
--
Dong, Eddie wrote:
> Here is the reformatted one, with the patch 64bits guest Kernel Build
> performance
> on my platform exceeds Xen by ~7%.
>
Hey, this came earlier than I expected :)
>
> +#define msr_efer_save_restore_bits(x) ((x).data &
> EFER_SAVE_RESTORE_BITS)
> +
>
This needs to b
Dong, Eddie wrote:
> [EMAIL PROTECTED] wrote:
>
>> Try again.
>>
> Wrong attachment. Please use this one.
>
>
Applied & thanks.
--
Do not meddle in the internals of kernels, for they are subtle and quick to
panic.
Daniel Hecken wrote:
> Hello,
>
> I have found an issue for compiling on 32 Bit machines in
> v2.6.22-rc1-g1ab29f3.
>
> I'm not sure if I have set the #ifdef CONFIG_X86_64 at the right place.
> Please have a look at it. With this patch v2.6.22-rc1-g1ab29f3 compiles
> und runs fine.
>
>
v2.6.22-
Shaohua Li wrote:
> Hi,
> I saw some discussions on the topic but no progress. I did an
> experiment to make guest page be allocated dynamically and swap out.
> please see attachment patches. It's not yet for merge but I'd like get
> some suggestions and help. Patches (against kvm-19) work here but
Carsten Otte wrote:
> Shaohua Li wrote:
>
>> +EXPORT_SYMBOL(delete_from_swap_cache);
>> +EXPORT_SYMBOL(move_to_swap_cache);
>> +EXPORT_SYMBOL(lookup_swap_cache);
>> +EXPORT_SYMBOL(read_swap_cache_async);
>> +EXPORT_SYMBOL(get_swap_page);
>> +EXPORT_SYMBOL(swap_free);
>> +EXPORT_SYMBOL(add_to_pag
Carsten Otte wrote:
> Avi Kivity wrote:
>> For one thing, kvm uses page->private to store its rmap information.
>> This is lost if regular mappings are used.
>>
>> More importantly, both the regular address space and kvm will want to
>> be called when a pag
Carsten Otte wrote:
>
>> An example: suppose host pfn 7 is allocated as guest pfn 8 (and
>> therefore, userspace address 0x8000). Suppose further the guest maps
>> guest pfn 8 to guest virtual 0x1 and guest virtal 0x11000.
>> Aren't there three tlbs you need to shoot down? host virtual
>
David Abrahams wrote:
> When I have windows XP running under kvm, I get
>
> [EMAIL PROTECTED]:/tmp$ aplay /usr/share/sounds/gaim/receive.wav
> ALSA lib pcm_dmix.c:864:(snd_pcm_dmix_open) unable to open slave
> aplay: main:550: audio open error: Device or resource busy
>
> As soon as I shut
Carsten Otte wrote:
> Avi Kivity wrote:
>> Interesting. And if you have multiple guest virtual to guest
>> physical translations, the hardware knows to flush them when the host
>> virtual to host physical entry is flushed?
> Yes, the cpu flushes all of them.
>
Ooh,
Anthony Liguori wrote:
>>
>> In a PV environment why not just pass an initial cookie/hash/whatever
>> as a command-line argument/register/memory-space to the underlying
>> kernel?
>>
>
> You can't pass a command line argument to Windows (at least, not easily
> AFAIK). You could get away with
Nakajima, Jun wrote:
> I agree that it's straightforward to handle those page tables. The
> question is interrupt remapping, i.e. how to inject particular external
> interupts to the vm that is reposible for the interrupts without
> impacting the kernel code. We are considering the irq chip infrast
Gregory Haskins wrote:
> Hi all,
> I found some strangeness with the PIT emulation while working on this APIC
> code that I can't quite explain. So I thought I would ping the list to see
> if anyone knowledgable can tell me what is happening.
>
> I am seeing two interrupts coming from the
Eric Van Hensbergen wrote:
> On 5/22/07, Christoph Hellwig <[EMAIL PROTECTED]> wrote:
>> >
>> > I didn't think we were talking about the general case, I thought we
>> > were discussing the PV case.
>> >
>>
>> In case of KVM no one is speaking of pure PV.
>>
>
> Why not? It seems worthwhile to come
Daniel Hecken wrote:
> Avi Kivity schrieb:
>
>> Daniel Hecken wrote:
>>
>>> Hello,
>>>
>>> I have found an issue for compiling on 32 Bit machines in
>>> v2.6.22-rc1-g1ab29f3.
>>>
>>> I'm not sure if I have set th
Christoph Hellwig wrote:
> On Tue, May 22, 2007 at 10:00:42AM -0700, ron minnich wrote:
>
>> On 5/22/07, Eric Van Hensbergen <[EMAIL PROTECTED]> wrote:
>>
>>
>>> I'm not opposed to supporting emulation environments, just don't make
>>> a large pile of crap the default like Xen -- and having
ron minnich wrote:
> On 5/22/07, Eric Van Hensbergen <[EMAIL PROTECTED]> wrote:
>
>
>> I'm not opposed to supporting emulation environments, just don't make
>> a large pile of crap the default like Xen -- and having to integrate
>> PCI probing code in my guest domains is a large pile of crap.
>>
Nakajima, Jun wrote:
> BTW, I'm presenting this at OLS:
> http://www.linuxsymposium.org/2007/view_abstract.php?content_key=192
>
> This uses direct paging mode today.
>
Are there patches available anywhere?
--
Do not meddle in the internals of kernels, for they are subtle and quick to
panic.
Carsten Otte wrote:
> I have been closely following thisvery interresting discussion. Here's
> my summary:
> - PV capabilities is something we'll want
> - being able to surface virtual devices to the guest as PCI is
> preferable to Windows
> - we need an additional way to surface virtual devices
David Abrahams wrote:
> on Mon May 21 2007, Avi Kivity
> wrote:
>
>
>> David Abrahams wrote:
>>
>>> When I have windows XP running under kvm, I get
>>>
>>> [EMAIL PROTECTED]:/tmp$ aplay /usr/share/sounds/gaim/receive.wav
>>
Jon wrote:
> On Mon, May 21, 2007 at 08:37:48AM -0700, Shahar Frank wrote:
>
>
>> You have to make QEMU use ALSA as your sound system and specify a
>> mixer device for input and output. This can be done using some
>> environment variables that should be set before the qemu binary is
>> run.
>
Jun Koi wrote:
> Hi Avi,
>
> Could you make your slides/paper at NLUGG available?
> (http://www.nluug.nl/events/vj07/)
>
The paper should be available as part of the Proceedings. I looked and
couldn't find it on the site, maybe you can drop them an email and ask
if it is available online.
--
Jorge Lucángeli Obes wrote:
> I had some time on my hands lately and tried to debug this a little. I
> found that there's actually something showing in dmesg:
>
> [ 3872.221039] emulation failed but !mmio_needed? rip 9a12 0f 09 66 25
>
> Does that help? I'm running kvm-24 now, but the exception sti
Jun Koi wrote:
> On 5/23/07, Lucas Bonnet <[EMAIL PROTECTED]> wrote:
>
>> Avi Kivity a écrit :
>>
>>> The paper should be available as part of the Proceedings. I looked and
>>> couldn't find it on the site, maybe you can drop them
Regular readers of this column will not be surprised to hear that kvm-25
is much faster than earlier versions.
Changes since kvm-24:
- massive performance increase (Eddie Dong)
- regenerate bios from latest bochs sources, hopefully fixing a
regression with some guests
- some testsuite work (Anthon
David Abrahams wrote:
>>> "For ALSA 1.0.9rc2 and higher you don't need to setup dmix. Dmix is
>>> enabled as default for soundcards which don't support hw mixing."
>>>
>>> I've found this to be the case on my laptop, where I use:
>>>
>>> export QEMU_AUDIO_DRV=alsa
>>> export QEMU_AUDIO_DAC_FIXED_F
Laurent Vivier wrote:
> Compilation fails on my system (Debian etch on x86_64)
>
> gcc -I /home/vivierl/kvm-25/kernel/include -MMD -MF test/.bootstrap.d -g
> -fomit-frame-pointer -Wall -m64 -fno-stack-protector -std=gnu99
> -ffreestanding -c -nostdlib -o test/bootstrap.o test/bootstrap.S
> test/
Gregory Haskins wrote:
> Halting in userspace requires a relatively cumbersome mechanism to signal the
> halted VCPU. Implementing halt in kernel should be relatively straight
> forward and it eliminates the need for the signaling
>
> /*
> + * The vCPU has executed a HLT instruction with in-kerne
Gregory Haskins wrote:
> I am pleased to announce v7 of the patch series. This includes v6 with the
> following changes:
>
Doesn't apply. Can you rebase to HEAD?
> 1) Minor bug fixes/cleanup
> 2) Added better support for level-sensitive interrupts
> 3) Now officially includes in-kernel HLT s
Li, Xin B wrote:
> So you will check in the patch soon?
>
Yes. Still need to test AMD and some odd guests.
> Really a good news since this will be the base for enabling SMP.
>
SMP, faster paravirt drivers, TPR shadow on vmx...
--
error compiling committee.c: too many arguments to functi
Uwe Kubosch wrote:
> Hi all!
>
> KVM is great!
>
> I am successfully running Windows Xp on KVM-24 in Fedora 7 test 4. I
> have even connected a CDROM drive, which was a bit of hassle.
>
> One problem I have is keyboard layout. I need a Norwegian keyboard
> layout to work, and I have installed thi
Uwe Kubosch wrote:
> On Thu, 2007-05-24 at 12:55 +0300, Avi Kivity wrote:
>
>>> One problem I have is keyboard layout. I need a Norwegian keyboard
>>> layout to work, and I have installed this in the Linux host and in the
>>> Windows XP guest, but no Norwegia
Uwe Kubosch wrote:
> If I skip the virt-manager, and start from the command line, could you
> give me an example for using sdl? Something like
>
> qemu-kvm
>
> qemu-kvm is the right program to use, right?
>
>
>
qemu-kvm -m 1024
For virtual machine with 1024MB RAM.
--
error compiling comm
CPU_DYING is called in atomic context, so don't try to take any locks.
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
---
kernel/cpuset.c |3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index f57854b..d4ab1c6 100644
-
CPU_DYING is notified in atomic context, so no taking mutexes here.
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
---
arch/i386/kernel/cpu/mcheck/therm_throt.c |6 --
1 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/i386/kernel/cpu/mcheck/therm_throt.c
b/arc
By keeping track of which cpus have virtualization enabled, we
prevent double-enable or double-disable during hotplug, which is a
very fatal oops.
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
---
drivers/kvm/kvm_main.c | 47 +++
1 files chang
The hotplug IPIs can be called from the cpu on which we are currently
running on, so use on_one_cpu(). Similarly, drop on_each_cpu() for the
suspend/resume callbacks, as we're in atomic context here and only one
cpu is up anyway.
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
---
The following patchset makes kvm more robust wrt cpu hotunplug, and
makes suspend-to-ram actually work. Suspend-to-disk benefits from
the cpu hotunplug improvements as well.
The major issue is that KVM wants to disable the virtualization
extensions at a point in time when no user processes are sc
on is called in atomic
context on the doomed cpu.
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
---
include/linux/notifier.h |3 +++
kernel/cpu.c | 16 ++--
2 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/include/linux/notifier.h b/include/linux
Only at the CPU_DYING stage can we be sure that no user process will
be scheduled onto the cpu and oops when trying to use virtualization
extensions.
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
---
drivers/kvm/kvm_main.c |4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff
This defines on_one_cpu() which is similar to smp_call_function_single()
except that it works if cpu happens to be the current cpu. Can also be
seen as a complement to on_each_cpu() (which also doesn't treat the
current cpu specially).
Signed-off-by: Avi Kivity <[EMAIL PROTECTED]>
-
Gregory Haskins wrote:
>
>
>> We have a specialized signal mask for the kernel, and it is already in
>> effect here. See KVM_SET_SIGNAL_MASK.
>>
>>
>
> KVM_SET_SIGNAL_MASK is precisely what I was trying to counteract ;).
> Basically I was thinking that userspace could have set some a
Gregory Haskins wrote:
> So as long as any appropriate signal will kick the HLT out of this
> wait-queue, we are ok. It sounds like I can just get rid of the sigprocmask
> all together and this will work?
Yes.
--
error compiling committee.c: too many arguments to function
Avi Kivity wrote:
> The following patchset makes kvm more robust wrt cpu hotunplug, and
> makes suspend-to-ram actually work. Suspend-to-disk benefits from
> the cpu hotunplug improvements as well.
>
>
Here's the patchset diffstat in case anyone's interested:
ar
Heiko Carstens wrote:
> On Thu, May 24, 2007 at 03:10:12PM +0300, Avi Kivity wrote:
>
>> This defines on_one_cpu() which is similar to smp_call_function_single()
>> except that it works if cpu happens to be the current cpu. Can also be
>> seen as a complement to o
Roland Dreier wrote:
> I don't see any documented restrictions about preemption being
> disabled when this function is called, but...
>
> > +int on_one_cpu(int cpu, void (*func) (void *info), void *info,
> > + int retry, int wait)
> > +{
> > + int ret;
> > + int this_cpu;
> > +
> >
Gregory Haskins wrote:
> Passes the usual tests, and offers an 11% speedup. There is another
> enhancement not included here (coming shortly) which exposes another 12%
> speedup over this as well. Stay tuned
>
>
This fails on amd, locks up completely. Bisecting now. lapic.c needs a
#include
Avi Kivity wrote:
> Gregory Haskins wrote:
>> Passes the usual tests, and offers an 11% speedup. There is another
>> enhancement not included here (coming shortly) which exposes another 12%
>> speedup over this as well. Stay tuned
>>
>>
> This fails on amd,
Gregory Haskins wrote:
>>>> On Thu, May 24, 2007 at 10:58 AM, in message <[EMAIL PROTECTED]>,
>>>>
> Avi Kivity <[EMAIL PROTECTED]> wrote:
>
>> Avi Kivity wrote:
>>
>>> Gregory Haskins wrote:
>>>
&
Shaohua Li wrote:
> On Thu, 2007-05-24 at 20:10 +0800, Avi Kivity wrote:
>
>> The following patchset makes kvm more robust wrt cpu hotunplug, and
>> makes suspend-to-ram actually work. Suspend-to-disk benefits from
>> the cpu hotunplug improvements as well.
>>
Avi Kivity wrote:
> I estimate that that take_cpu_down will run for about a millisecond if
> there are a few hundred vcpus which have last run on the dying cpu (and
> that's an extreme case, which is not expected in normal operation).
I measured vmclear time on an uncached vmcs (
This is a minor release for compile fixes while we hash out the
apic-on-amd problems.
Changes since kvm-25:
- implement wbinvd emulation, triggered by Windows Vista
- compile fixes (Markus Rechberger, me)
Notes:
If you use the modules from kvm-26, you can use any version of Linux
from 2.6.9 u
Gregory Haskins wrote:
> static void kvm_vcpu_irqsink_init(struct kvm_vcpu *vcpu)
> diff --git a/drivers/kvm/svm.c b/drivers/kvm/svm.c
> index a9d917a..c79bfc0 100644
> --- a/drivers/kvm/svm.c
> +++ b/drivers/kvm/svm.c
> @@ -1544,9 +1544,43 @@ static int svm_vcpu_run(struct kvm_vcpu *vcpu, struct
Anthony Liguori wrote:
> Pär Andersson wrote:
>
>> Hi.
>>
>> I am getting a kernel panic when loading the kvm-amd module. I have talked a
>> little about this with aliguori on IRC and according to him the panic occurs
>> when KVM enables EFER.SVME.
>>
>>
>
> I find this very odd. Sett
Dong, Eddie wrote:
> Not sure if we should use PT_USER_MASK | PT_WRITABLE_MASK here.
>
> diff --git a/drivers/kvm/paging_tmpl.h b/drivers/kvm/paging_tmpl.h
> index 6dd0da9..183d4ca 100644
> --- a/drivers/kvm/paging_tmpl.h
> +++ b/drivers/kvm/paging_tmpl.h
> @@ -213,7 +213,7 @@ static void FNAME(upd
Dong, Eddie wrote:
> BTW, in kvm_mmu_pte_write, I feel a little bit stranger for following
> code:
>
>
>
>>level = page->role.level;
>>npte = 1;
>>if (page->role.glevels == PT32_ROOT_LEVEL) {
>>page_offset <<= 1; /* 32-
(अमेय) Ameya (पाळंदे) Palande wrote:
> Hi,
>
> Sorry for the previous error report.
>
> Actually I upgraded ubuntu kernel and forgot to remove
> default kvm modules which come with kernel.
>
> Now its working properly.
>
> But it seems to be a problem with 2 different installation
> locations for k
Anthony Liguori wrote:
> Howdy,
>
> Does anyone know what the state of a pv_ops backend for KVM is? I
> know Ingo has an implementation that implements CR3 caching but I
> don't see any branches in Avi's git tree.
>
> Perhaps we should try for a simple pv_ops backend for 2.6.23 seeing as
> how
about a cpu going away at a point in time where it's
still alive, but not running any user processes. Such a notification does
not exist today, so the patchset adds it as a new CPU_DYING notification.
The patchset is against 2.6.22-rc3.
Shortlog:
Avi Kivity (7):
HOTPLUG: Add CPU_
Anthony Liguori wrote:
> Avi Kivity wrote:
>> Anthony Liguori wrote:
>>> Howdy,
>>>
>>> Does anyone know what the state of a pv_ops backend for KVM is? I
>>> know Ingo has an implementation that implements CR3 caching but I
>>> don't se
(अमेय) Ameya (पाळंदे) Palande wrote:
> Hi,
>
> When we can expect suspend to ram will work ?
> Kernel I am using is : 2.6.20-16-generic
> Kvm - 26
> Intel VT T2300 on dell inspiron e1505 / 6400 laptop.
>
Suspend to ram works on at least one laptop. If it doesn't work for
you, try the patch in
Anthony Liguori wrote:
>>>
>>> That's a bit more ambitious than I was thinking. I would be very
>>> happy with a pv timer, interrupt controller, and some basic CPU
>>> optimizations. I'm still not convinced the perf benefits of direct
>>> paging justify the annoyances that come with it (guests
Huang2, Wei wrote:
> SVM looks available on your machine. If possible, could you provide dmidecode
> information (type "dmidecode") for further verification? I know that some
> vendors disabled SVM feature in BIOS last year. But this was pretty rare.
> Maybe you can check whether BIOS has an opt
Dong, Eddie wrote:
> Avi:
> I noticed the current MMU data structure is defined as per VCPU
> such as:
>
> struct kvm_vcpu {
> .
> struct list_head free_pages;
> struct kvm_mmu_page page_header_buf[KVM_NUM_MMU_PAGES];
> .
> }
>
> This is a hot topics
Huang2, Wei wrote:
> As far as I know, there is no special way to detect BIOS-disabled SVM. BIOS
> should always trap #GP on writing SVME bit. So the way you suggested should
> work.
>
>
Okay. How does the bios disable svm?
--
Do not meddle in the internals of kernels, for they are subtle
Rusty Russell wrote:
> On Tue, 2007-05-29 at 17:00 +0300, Avi Kivity wrote:
>
>> Anthony Liguori wrote:
>>
>>> Avi Kivity wrote:
>>>
>>>> I think we should aim for a full direct paging implementation, where
>>>> the cr3
Dong, Eddie wrote:
> Avi Kivity wrote:
>
>> On a pte update, npte will always be 1. On a pde update, we won't do
>> anything in mmu_pte_write_new_pte because it doesn't handle
>> pdes. If we
>> extend it to handle pdes, then we need either to modify
Rusty Russell wrote:
> Two versions, size *and* ret? This seems like overkill...
>
>
I think we ought to move away from version numbers and use feature
availability flags instead.
>> + if (rc) {
>> + printk(KERN_INFO "paravirt KVM unavailable\n");
>>
>
> Double-print
Anthony Liguori wrote:
>>>
>>>
>> For KVM, it should be okay as well. But we can replace two CR4 accesses
>> with just one hypercall.
>>
>>
>
> I was thinking the same thing :-)
>
> I was actually thinking about adding a hypercall to set/clear a bit in a
> control register. Th
Dong, Eddie wrote:
> Move per VCPU mmu_memory_cache to be VM basis.
>
> Your opnion?
>
> Eddie
>
> diff --git a/drivers/kvm/kvm.h b/drivers/kvm/kvm.h
> index 0632d0b..77989b4 100644
> --- a/drivers/kvm/kvm.h
> +++ b/drivers/kvm/kvm.h
> @@ -300,11 +300,6 @@ struct kvm_vcpu {
>
> struct kvm_
Dong, Eddie wrote:
> Yes, We will provide other pathes for real SMP support. This one is just
> for pre-movement.
> BTW, at bigening, our SMP work may start with big lock (only one VCPU
> get accessing to shadow PT), and then gradually move to fine lock, and
> we expect to start SMP debug next week
Stephane Eranian wrote:
> Hello,
>
> Looking at kvm-26, it seems that the CPUID values as seen by the guest OS
> are still hardcoded for i386/x86-64 at least.
>
> For performance counter virtualization, the guest needs to see the *actual*
> family/model information in order to correctly program the
Stephane Eranian wrote:
>>
>> The main issue is migration (and save/restore). If you migrate to a
>> host with fewer capabilities, applications may fail when they use
>> unavailable instructions that they successfully detected earlier.
>>
>>
> In the case of heterogeneous migration, clearly
Stephane Eranian wrote:
>>
>> If the guest cpuid is set to a least common denominator, it should work.
>>
>>
> There is no common denominator between a P4 and Intel Core 2 Duo for the
> performance counters. So you cannot simply use a generic member of family
> 15 to fake the guest cpuid runnn
Carsten Otte wrote:
> Troy Benjegerdes wrote:
>
>> This kind of a claim needs some benchmark data to document it.
>>
> We've implemented both for our vdisk driver on 390. At least on our
> platform, merging in the host is preferable because vmenter/vmexit is
> very fast and we would merge
H. Peter Anvin wrote:
> Axel Kittenberger wrote:
>
>> Unfortunally all machines detect the same ethernet address
>> '52:54:00:12:34:56'. Which you can guess what i means, networking comes
>> and goes whatever machine last the ethernet address got hold of from the
>> gateway. I tried specifing
about a cpu going away at a point in time
where it's still alive, but not running any user processes. Such a
notification does not exist today, so the patchset adds it as a new
CPU_DYING notification.
The patchset is against 2.6.22-rc3.
Shortlog:
Avi Kivity (7):
HOTPLUG: Add CPU_
Zhao, Yunfeng wrote:
>
> I met an error when i build latest KVM on rhel5.
>
> Seems asm/cmpxchg.h is not in the kernel before 2.6.22.
>
> How can I fix the issue?
>
>
>
Add a kernel/include/linux/asm/cmpxchg.h, which defines set_64bit() for
both i386 and x86_64.
--
Do not meddle in the inter
Linus Torvalds wrote:
> Don't send me pull requests like this. And absolutely do NOT send them as
> resends. I just get grumpy.
>
> If all the added code had been KVM-only, I might not care. But when the
> bulk of the code touches core files, you had better explain why this is so
> important th
Rusty Russell wrote:
> This attempts to implement a "virtual I/O" layer which should allow
> common drivers to be efficiently used across most virtual I/O
> mechanisms. It will no-doubt need further enhancement.
>
> The details of probing the device are left to hypervisor-specific
> code: it simpl
Jun Koi wrote:
> Hi Avi,
>
> On 6/2/07, Avi Kivity <[EMAIL PROTECTED]> wrote:
>> Linus Torvalds wrote:
>> > Don't send me pull requests like this. And absolutely do NOT send
>> them as
>> > resends. I just get grumpy.
>> >
>> >
Rusty Russell wrote:
> On Sat, 2007-06-02 at 09:30 +0300, Avi Kivity wrote:
>
>> Rusty Russell wrote:
>>
>>> + * virtio_ops - virtio abstraction layer
>>> + * @add_outbuf: prepare to send data to the other end:
>>> + * vdev: the virtio_devic
Nguyen Anh Quynh wrote:
> This patch turns some local functions and variables in hypercall.c
> static.
>
> Signed-off-by: Nguyen Anh Quynh <[EMAIL PROTECTED]>
Applied, thanks.
Please give patch attachments real names; and if you end them with
".patch", I think gmail will add the magic necessary
Nguyen Anh Quynh wrote:
> This patch makes hypercall.c use symbol instead of number with
> hypercall-ioport-size.
Applied, thanks.
--
error compiling committee.c: too many arguments to function
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