H. Peter Anvin wrote:
How does this logic work when the instruction emulated is an STI or
MOV SS instruction? In particular, when does
GUEST_INTERRUPTIBILITY_INFO sets set to reflect the *blocking* operation?
The processor sets it when emulating an sti or mov ss instruction. We
ought to
Glauber Costa wrote:
How does this logic work when the instruction emulated is an STI or MOV
SS instruction? In particular, when does GUEST_INTERRUPTIBILITY_INFO
sets set to reflect the *blocking* operation?
mov ss is a non-issue, since it is executed natively.
Except in big real
On Tue, Mar 31, 2009 at 03:00:02AM +0300, Izik Eidus wrote:
When using mmu notifiers, we are allowed to remove the page count
reference tooken by get_user_pages to a specific page that is mapped
inside the shadow page tables.
This is needed so we can balance the pagecount against mapcount
On Tue, Mar 31, 2009 at 03:00:03AM +0300, Izik Eidus wrote:
this flag notify that the host physical page we are pointing to from
the spte is write protected, and therefore we cant change its access
to be write unless we run get_user_pages(write = 1).
(this is needed for change_pte support in
Acked-by: Marcelo Tosatti mtosa...@redhat.com
On Wed, Apr 08, 2009 at 01:58:55AM +0200, Jan Blunck wrote:
This patch converts some KVM spin-locks to be of type raw_spinlock_t.
Signed-off-by: Jan Blunck jblu...@suse.de
---
arch/x86/kvm/i8254.h |2 +-
arch/x86/kvm/irq.h |2 +-
2
Marcelo Tosatti wrote:
On Tue, Mar 31, 2009 at 03:00:02AM +0300, Izik Eidus wrote:
When using mmu notifiers, we are allowed to remove the page count
reference tooken by get_user_pages to a specific page that is mapped
inside the shadow page tables.
This is needed so we can balance the
Hello,
now I was able to start the guest vmu with disk virtio, and some of the
tests with disk involvement even improved a bit.
But the test in which a logo is added to the video stream does not
improve. I don't know why the performance is so bad?
Subtest: Reading video locally, adding a logo
I was thinking of a bug when using large pages, which may not be your problem.
There have been other reports recently, with workarounds, that are similar,
just not the exact same number you have.
some subjects to look for:
* Can't boot guest with more than 3585MB when using large pages
There
Huang Ying wrote:
Add MCE support to KVM. The related MSRs are emulated. A new vcpu
ioctl command KVM_X86_SETUP_MCE is used to setup MCE emulation such as
the mcg_cap. MCE is injected via vcpu ioctl command
KVM_X86_SET_MCE. Extended machine-check state (MCG_EXT_P) and CMCI are
not implemented.
On Thu, 2009-04-09 at 10:39 -0500, Brian Jackson wrote:
I was thinking of a bug when using large pages, which may not be your
problem.
There have been other reports recently, with workarounds, that are similar,
just not the exact same number you have.
some subjects to look for:
* Can't
Hi, I am a few questions on Virtio, Hope somebody clarifies them
1. What is the address type that is put inside the vring descriptor in the virt
queue while placing a request? Is it the guest virtual address or guest
physical address?
2. If it is Guest physical address, how qemu converts it to
Zhiyong Wu wrote:
Signed-off-by: Zhiyong Wu zwu.ker...@gmail.com
Applied both, thanks.
--
Do not meddle in the internals of kernels, for they are subtle and quick to
panic.
--
To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message to
nathan binkert wrote:
Excellent. One of the things I'm trying hard to do is keep kvm from being a
'qemu accelerator' and generally useful for other projects. That is, I'm
trying to keep the userspace interface neutral, and not to model exactly the
hardware qemu provides but allow for other
Marcelo Tosatti wrote:
Applied, thanks.
--
Do not meddle in the internals of kernels, for they are subtle and quick to
panic.
--
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the body of a message to majord...@vger.kernel.org
More majordomo info at
Thanks Brian,
The kvm host with the problem is running:
* Fedora release 10 (Cambridge)
* kernel: 2.6.27 (the actual fedora package is 2.6.27.21-170.2.56.fc10.x86_64)
* 4x Quad-Core AMD Opteron(tm) Processor 8347 HE
* KVM version: 74 (the actual fedora package is (kvm-74-10.fc10.x86_64)
This interface provides a bidirectional shared-memory based signaling
mechanism. It can be used by any entities which desire efficient
communication via shared memory. The implementation details of the
signaling are abstracted so that they may transcend a wide variety
of locale boundaries (e.g.
This is release v2. Changes since v1:
*) Incorporated review feedback from Stephen Hemminger on vbus-enet driver
*) Added support for connecting to vbus devices from userspace
*) Added support for a virtio-vbus transport to allow virtio drivers to
work with vbus (needs testing and backend
We expect to have various types of connection-clients (e.g. userspace,
kvm, etc), each of which is likely to have common access patterns and
marshalling duties. Therefore we create a client API to simplify
client development by helping with mundane tasks such as handle-2-pointer
translation, etc.
This will generally be used for hypervisors to publish any host-side
virtual devices up to a guest. The guest will have the opportunity
to consume any devices present on the vbus-proxy as if they were
platform devices, similar to existing buses like PCI.
Signed-off-by: Gregory Haskins
We need to get hotswap events in environments which cannot use existing
facilities (e.g. inotify). So we add a notifier-chain to allow client
callbacks whenever an interface is {un}registered.
Signed-off-by: Gregory Haskins ghask...@novell.com
---
include/linux/vbus.h | 15 +
Signed-off-by: Gregory Haskins ghask...@novell.com
---
include/linux/venet.h | 47 +++
1 files changed, 47 insertions(+), 0 deletions(-)
create mode 100644 include/linux/venet.h
diff --git a/include/linux/venet.h b/include/linux/venet.h
new file
Signed-off-by: Gregory Haskins ghask...@novell.com
---
drivers/net/Kconfig | 13 +
drivers/net/Makefile|1
drivers/net/vbus-enet.c | 680 +++
3 files changed, 694 insertions(+), 0 deletions(-)
create mode 100644 drivers/net/vbus-enet.c
This module is similar in concept to a tuntap. A tuntap module provides
a netif() interface on one side, and a char-dev interface on the other.
Packets that ingress on one interface, egress on the other (and vice versa).
This module offers a similar concept, except that it substitues the
Signed-off-by: Gregory Haskins ghask...@novell.com
---
drivers/vbus/devices/venet-tap.c | 235 +-
1 files changed, 228 insertions(+), 7 deletions(-)
diff --git a/drivers/vbus/devices/venet-tap.c b/drivers/vbus/devices/venet-tap.c
index 148e2c8..a1f2dc6
We need a way to detect if a VM is reset later in the series, so lets
add a capability for userspace to signal a VM reset down to the kernel.
Signed-off-by: Gregory Haskins ghask...@novell.com
---
arch/x86/kvm/x86.c |1 +
include/linux/kvm.h |2 ++
include/linux/kvm_host.h |
This patch provides the ability to dynamically declare and map an
interrupt-request handle to an x86 8-bit vector.
Problem Statement: Emulated devices (such as PCI, ISA, etc) have
interrupt routing done via standard PC mechanisms (MP-table, ACPI,
etc). However, we also want to support a new
This patch adds support for guest access to a VBUS assigned to the same
context as the VM. It utilizes a IOQ+IRQ to move events from host-guest,
and provides a hypercall interface to move events guest-host.
Signed-off-by: Gregory Haskins ghask...@novell.com
---
arch/x86/include/asm/kvm_para.h
This adds a driver to interface between the host VBUS support, and the
guest-vbus bus model.
Signed-off-by: Gregory Haskins ghask...@novell.com
---
arch/x86/Kconfig|9 +
drivers/Makefile|1
drivers/vbus/proxy/Makefile |2
drivers/vbus/proxy/kvm.c| 726
The ioapic code currently privately manages the mapping between irq
and vector. This results in some layering violations as the support
for certain MSI operations need this info. As a result, the MSI
code itself was moved to the ioapic module. This is not really
optimal.
We now have another
Signed-off-by: Gregory Haskins ghask...@novell.com
---
drivers/net/vbus-enet.c | 249 +--
include/linux/venet.h | 39 +++
2 files changed, 275 insertions(+), 13 deletions(-)
diff --git a/drivers/net/vbus-enet.c b/drivers/net/vbus-enet.c
index
It will be common to map an IOQ over the VBUS shared-memory interfaces,
so lets generalize their setup so we can reuse the pattern.
Signed-off-by: Gregory Haskins ghask...@novell.com
---
include/linux/vbus_device.h |7 +++
include/linux/vbus_driver.h |7 +++
kernel/vbus/Kconfig
We can map these over VBUS shared memory (or really any shared-memory
architecture if it supports shm-signals) to allow asynchronous
communication between two end-points. Memory is synchronized using
pure barriers (i.e. lockless), so IOQs are friendly in many contexts,
even if the memory is
On Thu, 09 Apr 2009 12:31:29 -0400
Gregory Haskins ghask...@novell.com wrote:
Signed-off-by: Gregory Haskins ghask...@novell.com
---
drivers/net/Kconfig | 13 +
drivers/net/Makefile|1
drivers/net/vbus-enet.c | 680
+++
3
Avi,
Gregory Haskins wrote:
Todo:
*) Develop some kind of hypercall registration mechanism for KVM so that
we can use that as an integration point instead of directly hooking
kvm hypercalls
What would you like to see here? I now remember why I removed the
original patch I had for
The x86 kvm kernel module limits guest cpu count to 16, but theuserspace pc
definition says 255 still, so kvm_create_vcpu will fail for that reason with
-smp 16 specified. This patch causes qemu-kvm to exit in that case. Without
this patch other errors get reported down the road and finally
Hello,
I have always created my VM under kvm manually starting them from a .sh
script:
for example machine called abbone
# abbone.sh
screen qemu-kvm -nographic -hda ./abbone.img -m 512 -net
nic,model=e1000,macaddr=00:16:3e:05:00:07 -net tap -name abbone -vnc :0
I use screen so that I am
On Thu, Apr 09, 2009 at 07:02:02PM +0200, Riccardo Veraldi wrote:
Hello,
I have always created my VM under kvm manually starting them from a .sh
script:
for example machine called abbone
# abbone.sh
screen qemu-kvm -nographic -hda ./abbone.img -m 512 -net
Hi,
Thanks for the response. I have read through the archives (I also did
so before posting :) ) but I haven't been able to find any information
about this. Do you know where I can find it? I tried searching for 4GB
and 3525MB and various combinations. Do you know if a specific limit
is
Brian, Alex,
2009/4/9 Alex Williamson alex.william...@hp.com:
On Thu, 2009-04-09 at 10:39 -0500, Brian Jackson wrote:
some subjects to look for:
* Can't boot guest with more than 3585MB when using large pages
There was a patch from Marcelo that was supposed to fix it.
* kvm-84 and guests
Is this a problem in the latest (kvm-84) or just in an older version that
Fedora 10 provides?
- Original Message -
From: Daniel Scott djsc...@mit.edu
To: Alex Williamson alex.william...@hp.com
Cc: Brian Jackson i...@theiggy.com, kvm@vger.kernel.org
Sent: Thursday, April 9, 2009
On Thu, Apr 09, 2009 at 09:37:10AM -0700, Stephen Hemminger wrote:
+static int tx_ringlen = 256;
+module_param(tx_ringlen, int, 0444);
+
+#undef PDEBUG /* undef it, just in case */
+#ifdef VBUS_ENET_DEBUG
+# define PDEBUG(fmt, args...) printk(KERN_DEBUG vbus_enet: fmt, ##
Signed-off-by: Beth Kon e...@us.ibm.com
diff --git a/bios/acpi-dsdt.dsl b/bios/acpi-dsdt.dsl
index 06ab25d..84697db 100755
--- a/bios/acpi-dsdt.dsl
+++ b/bios/acpi-dsdt.dsl
@@ -307,6 +307,24 @@ DefinitionBlock (
,, , AddressRangeMemory, TypeStatic)
})
}
These patches resolve the irq0-inti2 override issue, and get the hpet working
on kvm with and without -no-kvm-irqchip (i.e., when hpet takes over, it
disables userspace or in-kernel pit as appropriate).
The irq0-inti2 override will always be used unless the kernel cannot do irq
routing (i.e.,
Hello,
I'm currently writing my bachelor's thesis on the KVM and ran a series
of benchmarks, partly home grown on it. This was a few months ago. I
used the kvm package from the Debian sid repository (kvm-72) with kernel
2.6.26, which at the time were both almost up-to-date :-) (upstream KVM
On Thu, 2009-04-09 at 23:50 +0800, Avi Kivity wrote:
Huang Ying wrote:
+int kvm_set_msr_common(struct kvm_vcpu *vcpu, u32 msr, u64 data)
+{
+ switch (msr) {
+ case MSR_EFER:
+ set_efer(vcpu, data);
break;
case MSR_IA32_DEBUGCTLMSR:
if
Jan,
Here are some patches that are necessary to get KVM running with the -rt4
patchset.
Thanks a lot.
Unfortunaately, there is still a last one at kernel/smp.c:288
/* Can deadlock when called with interrupts disabled */
WARN_ON_ONCE(irqs_disabled() !oops_in_progress);
Do we
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