On Sun, Nov 01, 2009 at 11:27:15PM -0500, Rik van Riel wrote:
> On 11/01/2009 06:56 AM, Gleb Natapov wrote:
> >Add hypercall that allows guest and host to setup per cpu shared
> >memory.
>
> While it is pretty obvious that we should implement
> the asynchronous pagefaults for KVM, so a swap-in
> o
On 11/02/2009 01:45 AM, Erik Rull wrote:
Hi Avi,
Please don't top-post.
the Host CPU is a Intel Core2Duo - VT capable and enabled!
The problem is that one of the flags that -cpu core2duo enables is
implemented incorrectly, so it leads to .net breakage.
These flags are pni, lm, nx, ssse3
On 11/01/2009 06:56 AM, Gleb Natapov wrote:
Add hypercall that allows guest and host to setup per cpu shared
memory.
While it is pretty obvious that we should implement
the asynchronous pagefaults for KVM, so a swap-in
of a page the host swapped out does not stall the
entire virtual CPU, I beli
Hi Avi,
the Host CPU is a Intel Core2Duo - VT capable and enabled!
Best regards,
Erik
Avi Kivity wrote:
On 10/28/2009 11:13 PM, Erik Rull wrote:
Hi all,
when changing the CPU from the default QEMU32 one to e.g. the n270 or
the core2duo no .NET apps will work under Windows XP as guest.
Sw
> +static void invalidate_pte(struct hpte_cache *pte)
> +{
> + dprintk_mmu("KVM: Flushing SPT %d: 0x%llx (0x%llx) -> 0x%llx\n",
> + i, pte->pte.eaddr, pte->pte.vpage, pte->host_va);
> +
> + ppc_md.hpte_invalidate(pte->slot, pte->host_va,
> +MMU_P
> This is the really low level of guest entry/exit code.
>
> Book3s_64 has an SLB, which stores all ESID -> VSID mappings we're
> currently aware of.
>
> The segments in the guest differ from the ones on the host, so we need
> to switch the SLB to tell the MMU that we're in a new context.
>
> So
Hi,
I've got a Kubuntu host and two dedicated graphic cards. Now I want to
create a Windows Seven guest for KVM and give the guest one of the
graphic cards (it isn't "in business" on my host). The informations I
got is only that PCI passthrough is possible, but I've got no more
details about it (o
On 11/01/2009 07:07 PM, a...@linux-foundation.org wrote:
> The mm-of-the-moment snapshot 2009-11-01-10-01 has been uploaded to
Hi, I got the following warning while booting an image in qemu-kvm:
WARNING: at fs/attr.c:158 notify_change+0x2da/0x310()
Hardware name:
Modules linked in:
Pid: 1, comm:
The Buildbot has detected a new failure of default_i386_out_of_tree on qemu-kvm.
Full details are available at:
http://buildbot.b1-systems.de/qemu-kvm/builders/default_i386_out_of_tree/builds/73
Buildbot URL: http://buildbot.b1-systems.de/qemu-kvm/
Buildslave for this Build: b1_qemu_kvm_2
Buil
The Buildbot has detected a new failure of default_x86_64_out_of_tree on
qemu-kvm.
Full details are available at:
http://buildbot.b1-systems.de/qemu-kvm/builders/default_x86_64_out_of_tree/builds/74
Buildbot URL: http://buildbot.b1-systems.de/qemu-kvm/
Buildslave for this Build: b1_qemu_kvm_1
On 10/28/2009 11:13 PM, Erik Rull wrote:
Hi all,
when changing the CPU from the default QEMU32 one to e.g. the n270 or
the core2duo no .NET apps will work under Windows XP as guest.
Switching back and everything is fine. The Pentium Emulation on the
other side works fine!
The Application lo
On 10/28/2009 11:16 PM, Erik Rull wrote:
Hi all,
after several tests it seems that the interrupt assignment on the host
systems influences the kvm performance drastically. If eth0, video and
usb
are on seperate interrupts the perfomance is way better than if they are
shared (that means on the
On 10/29/2009 12:38 AM, Marcelo Tosatti wrote:
This will miss an event at the very beginning of the loop (powerdown
requested before we had a chance to spin up?). I think it should be
fine since there will be a pending signal which will break us out of
kvm_cpu_exec() before it has a chance to
On 10/29/2009 05:11 PM, Arnaud Maillet wrote:
Hello world,
I used to use Xen on my server but due to a non-patched cygwin problem
I installed kvm 83 on my redhat 5.4 with the red hat rpm.
I found some troubles with a windows 2008 server 64 bits guest. When I
install a software like an anti-viru
On 10/30/2009 02:23 PM, Chris Lalancette wrote:
In the meantime, I've gotten the "set_irq from IRQ context" that Avi
suggested
working, and the fixing up of this IOAPIC check is the last bit to actually get
kdump working.
There are two problems with that:
- kvm_set_irq() calls some notifi
Committed. Thanks.
> -Original Message-
> From: kvm-ow...@vger.kernel.org [mailto:kvm-ow...@vger.kernel.org] On
> Behalf Of Vadim Rozenfeld
> Sent: Sunday, November 01, 2009 12:41 PM
> To: kvm@vger.kernel.org
> Subject: [PATCH] viostor driver.Add memory barrier - synch with fix for
> Linu
Allow paravirtualized guest to do special handling for some page faults.
Signed-off-by: Gleb Natapov
---
arch/x86/include/asm/paravirt.h |7 +++
arch/x86/include/asm/paravirt_types.h |4
arch/x86/kernel/paravirt.c|8
arch/x86/kernel/paravirt_patch_
This patch add get_user_pages() variant that only succeeds if getting
a reference to a page doesn't require major fault.
Signed-off-by: Gleb Natapov
---
fs/ncpfs/mmap.c|2 ++
include/linux/mm.h |5 +
mm/filemap.c |3 +++
mm/memory.c| 31 +++
We want to be able to inject async pagefault into guest event if a guest
is not executing userspace code. But in this case guest may receive
async page fault in non-sleepable context. In this case it will be
able to make "wait for page" hypercall vcpu will be put to sleep until
page is swapped in a
If guest access swapped out memory do not swap it in from vcpu thread
context. Setup slow work to do swapping and send async page fault to
a guest.
Allow async page fault injection only when guest is in user mode since
otherwise guest may be in non-sleepable context and will not be able to
resched
Signed-off-by: Gleb Natapov
---
arch/x86/kvm/mmu.c | 16 ++--
1 files changed, 6 insertions(+), 10 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 3d33994..21ec65a 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -2358,7 +2358,7 @@ static bool kv
Do not preempt kernel. Just maintain counter to know if task can sleep.
Signed-off-by: Gleb Natapov
---
include/linux/hardirq.h |6 ++
include/linux/preempt.h | 22 --
kernel/sched.c |6 --
lib/kernel_lock.c |1 +
4 files changed, 19 inser
Add hypercall that allows guest and host to setup per cpu shared
memory.
Signed-off-by: Gleb Natapov
---
arch/x86/include/asm/kvm_host.h |3 +
arch/x86/include/asm/kvm_para.h | 11 +
arch/x86/kernel/kvm.c | 82 +++
arch/x86/kernel/setup.c
Asynchronous page fault notifies vcpu that page it is trying to access
is swapped out by a host. In response guest puts a task that caused the
fault to sleep until page is swapped in again. When missing page is
brought back into the memory guest is notified and task resumes execution.
Signed-off-b
If async page fault is received by idle task or when preemp_count is
not zero guest cannot reschedule, so make "wait for page" hypercall
and comtinue only after a page is ready.
Signed-off-by: Gleb Natapov
---
arch/x86/kernel/kvm.c | 16 +++-
1 files changed, 15 insertions(+), 1 de
When page is swapped in it is mapped into guest memory only after guest
tries to access it again and generate another fault. To save this fault
we can map it immediately since we know that guest is going to access
the page.
Signed-off-by: Gleb Natapov
---
arch/x86/include/asm/kvm_host.h |4 +
KVM virtualize guest memory by means of shadow pages or HW assistance
like NPT/EPT. Not all memory used by a guest is mapped into the guest
address space or even present in a host memory at any given time.
When vcpu tries to access memory page that is not mapped into guest
address space KVM is noti
Signed-off-by: Gleb Natapov
---
arch/x86/mm/gup.c |2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/x86/mm/gup.c b/arch/x86/mm/gup.c
index 71da1bc..cea0dfe 100644
--- a/arch/x86/mm/gup.c
+++ b/arch/x86/mm/gup.c
@@ -8,6 +8,7 @@
#include
#include
#include
+#inclu
On 11/01/2009 12:45 PM, Tejun Heo wrote:
Hello,
Avi Kivity wrote:
We get a page fault immediately (next instruction) after returning from
the guest when running with oprofile. The page fault address does not
match anything the instruction does, so presumably it is one of the
accesses the p
You are right.
After enabling MSI-x for the virtio block device I now only see
VIRTIO_PCI_QUEUE_NOTIFY writes and there aren't any VIRTIO_PCI_ISR
reads anymore.
Thanks,
Saul
On Sun, Nov 1, 2009 at 11:23 AM, Avi Kivity wrote:
> On 10/29/2009 05:47 PM, Saul Tamari wrote:
>>
>> Hi,
>>
>> The cur
Hello,
Avi Kivity wrote:
> We get a page fault immediately (next instruction) after returning from
> the guest when running with oprofile. The page fault address does not
> match anything the instruction does, so presumably it is one of the
> accesses the processor performs in order to service an
repository: /home/vadimr/shares/kvm-guest-drivers-windows
branch: XP
commit 6906acfc2d5f58df43ebc9c190e1447ff6e63a01
Author: Vadim Rozenfeld
Date: Sun Nov 1 11:54:03 2009 +0200
[PATCH] viostor driver.Add memory read barrier - synch with fix for Linux guests
by Michael S. Tsirkin
Sign
On 11/01/2009 12:00 PM, Tejun Heo wrote:
Hello,
Avi Kivity wrote:
Only, that merge doesn't change virt/kvm or arch/x86/kvm.
Tejun, anything known bad about that merge? ada3fa15 kills kvm.
Nothing rings a bell at the moment. How does it kill kvm? One big
difference caused by that
Hello,
Avi Kivity wrote:
> Only, that merge doesn't change virt/kvm or arch/x86/kvm.
>
> Tejun, anything known bad about that merge? ada3fa15 kills kvm.
Nothing rings a bell at the moment. How does it kill kvm? One big
difference caused by that merge is use of sparse areas near the top of
vma
On 10/29/2009 05:47 PM, Saul Tamari wrote:
Hi,
The current qemu-kvm from the git indeed adds the MSI-x capability to
the virtio block device.
With MSI-x enabled on the virtio block device, there aren't
VIRTIO_PCI_ISR reads on the unused device.
There shouldn't be VIRTIO_PCI_ISR reads on an
On 10/29/2009 07:13 PM, Avi Kivity wrote:
On 10/29/2009 06:53 PM, Jan Kiszka wrote:
We were missing one indirection here to translate from vmx-local to
x86 slot indices, and this caused subtle host crashes.
Ahh, good catch. How did it work?
And, of course, applied. Thanks.
--
error compi
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