* Asias He asias.he...@gmail.com wrote:
On 05/12/2011 02:01 AM, Pekka Enberg wrote:
This patch changes the '-c' command line option to specify the number of
CPUs
because it's used more often than console switching.
I'd like to tune the command line option further.
1)
Change
* Pekka Enberg penb...@kernel.org wrote:
To make debugging easier, look up symbol from guest kernel image based on RIP
when user does 'kill -3' to the hypervisor.
Example output looks as follows:
Code:
-
rip: [812cb3a0] delay_loop+30
Another suggestion: would anyone be interested in adding a 'kvm debug' command
that does the kill -3 magic?
Initially it could be something very simple like:
int cmd_debug()
{
system(kill -3 $(pidof kvm));
}
:-)
as i always have to remember this
* Asias He asias.he...@gmail.com wrote:
On 05/11/2011 11:17 PM, levinsasha...@gmail.com wrote:
From: Sasha Levin levinsasha...@gmail.com
e820 is expected to leave a memory gap within the low 32
bits of RAM space. From the documentation of e820_setup_gap():
/*
* Search for the
* Sasha Levin levinsasha...@gmail.com wrote:
Give proper names to vars named 'self'.
Signed-off-by: Sasha Levin levinsasha...@gmail.com
---
tools/kvm/8250-serial.c| 20 ++--
tools/kvm/cpuid.c |6 +-
tools/kvm/disk-image.c | 78
On 05/11/2011 01:44 PM, Paul Mackerras wrote:
This adds support for KVM running on 64-bit Book 3S processors,
specifically POWER7, in hypervisor mode. Using hypervisor mode means
that the guest can use the processor's supervisor mode. That means
that the guest can execute privileged
Glauber Costa glom...@redhat.com writes:
This patch adds a dummy legacy ISA device whose responsibility is to
deploy sgabios, an option rom for a serial graphics adapter.
The proposal is that this device is always-on when -nographics,
but can otherwise be enable in any setup when -device sga
On Wed, May 11, 2011 at 03:58:34PM +0300, Avi Kivity wrote:
On 05/10/2011 06:04 PM, Roedel, Joerg wrote:
On Tue, May 10, 2011 at 10:48:20AM -0400, Peter Zijlstra wrote:
On Tue, 2011-05-10 at 16:35 +0200, Joerg Roedel wrote:
The AMD perf-counters support counting in guest or host-mode
On Wed, May 11, 2011 at 11:55:28AM -0400, Avi Kivity wrote:
This not-for-merging patchset exposes an emulated version 1 architectural
performance monitoring unit to KVM guests. The PMU is emulated using
perf_events, so the host kernel can multiplex host-wide, host-user, and the
guest on
Am 11.05.2011 um 12:39 schrieb Paul Mackerras pau...@samba.org:
Commits a5d4f3ad3a (powerpc: Base support for exceptions using
HSRR0/1) and 673b189a2e (powerpc: Always use SPRN_SPRG_HSCRATCH0
when running in HV mode) cause compile and link errors for 32-bit
classic Book 3S processors when
On 2011-05-12 11:33, Joerg Roedel wrote:
On Wed, May 11, 2011 at 11:55:28AM -0400, Avi Kivity wrote:
This not-for-merging patchset exposes an emulated version 1 architectural
performance monitoring unit to KVM guests. The PMU is emulated using
perf_events, so the host kernel can multiplex
Hi Zachary,
1. re.:
+static void hpet_timer_driftfix_reset(HPETTimer *t)
+{
+if (t-state-driftfix timer_is_periodic(t)) {
+t-ticks_not_accounted = t-prev_period = t-period;
This is rather confusing. Clearly, ticks_not_accounted isn't actually
ticks not accounted, it's
On 05/12/2011 12:33 PM, Joerg Roedel wrote:
On Wed, May 11, 2011 at 11:55:28AM -0400, Avi Kivity wrote:
This not-for-merging patchset exposes an emulated version 1 architectural
performance monitoring unit to KVM guests. The PMU is emulated using
perf_events, so the host kernel can
On 05/12/2011 12:47 PM, Jan Kiszka wrote:
Anyway, I thought about a paravirt-approach instead of implementing a
real PMU... But there are certainly good reasons for both.
Paravirt is taking away the pressure from CPU vendors to do their virt
extensions properly - and doesn't help with
On Thu, May 12, 2011 at 11:33:00AM +0200, Alexander Graf wrote:
Am 11.05.2011 um 12:39 schrieb Paul Mackerras pau...@samba.org:
diff --git a/arch/powerpc/kvm/book3s_rmhandlers.S
b/arch/powerpc/kvm/book3s_rmhandlers.S
index ae99af6..1a1b344 100644
---
On Thu, 2011-05-12 at 11:33 +0200, Alexander Graf wrote:
Am 11.05.2011 um 12:39 schrieb Paul Mackerras pau...@samba.org:
Commits a5d4f3ad3a (powerpc: Base support for exceptions using
HSRR0/1) and 673b189a2e (powerpc: Always use SPRN_SPRG_HSCRATCH0
when running in HV mode) cause compile
Am 12.05.2011 um 13:16 schrieb Benjamin Herrenschmidt
b...@kernel.crashing.org:
On Thu, 2011-05-12 at 11:33 +0200, Alexander Graf wrote:
Am 11.05.2011 um 12:39 schrieb Paul Mackerras pau...@samba.org:
Commits a5d4f3ad3a (powerpc: Base support for exceptions using
HSRR0/1) and 673b189a2e
- Original Message -
Hello all,
Have built a CentOS 5.6 X86_64 server and wish to know which version
of KVM I should install to achieve sound under Windows ? I have to
create a custom kernel for Open-iSCSI so if the best approach is to
compile from source then that is not a problem.
qdev_try_create will cope well with a NULL bus, since it will assume
the main system bus by default. qdev_create, however, wants to print
a message, in which it instantiates the bus name. That simple and at
first inoffensive message will generate a segmentation found if the
reason for failure is a
This patch adds a dummy legacy ISA device whose responsibility is to
deploy sgabios, an option rom for a serial graphics adapter.
The proposal is that this device is always-on when -nographics,
but can otherwise be enable in any setup when -device sga is used.
[v2: suggestions on qdev by Markus ]
On Thu, May 12, 2011 at 12:51:11PM +0300, Avi Kivity wrote:
On 05/12/2011 12:33 PM, Joerg Roedel wrote:
Gaah, I was just about to submit a talk about PMU virtualization for KVM
Forum :)
Speed matters.
I'll take that as an argument for paravirt pmu, because that one is
certainly faster than
On Thu, May 12, 2011 at 11:47:51AM +0200, Jan Kiszka wrote:
On 2011-05-12 11:33, Joerg Roedel wrote:
Anyway, I thought about a paravirt-approach instead of implementing a
real PMU... But there are certainly good reasons for both.
Paravirt is taking away the pressure from CPU vendors to do
On 05/12/2011 03:17 PM, Ingo Molnar wrote:
* Asias He asias.he...@gmail.com wrote:
On 05/12/2011 02:01 AM, Pekka Enberg wrote:
This patch changes the '-c' command line option to specify the number of
CPUs
because it's used more often than console switching.
I'd like to tune the command
Instead of blacklisting known-unsupported cpuid leaves, whitelist known-
supported leaves. This is more conservative and prevents us from reporting
features we don't support. Also whitelist a few more leaves while at it.
Signed-off-by: Avi Kivity a...@redhat.com
---
Joerg, if you can review
On 2011-05-12 15:11, Joerg Roedel wrote:
On Thu, May 12, 2011 at 11:47:51AM +0200, Jan Kiszka wrote:
On 2011-05-12 11:33, Joerg Roedel wrote:
Anyway, I thought about a paravirt-approach instead of implementing a
real PMU... But there are certainly good reasons for both.
Paravirt is taking
On 05/12/2011 04:11 PM, Joerg Roedel wrote:
On Thu, May 12, 2011 at 11:47:51AM +0200, Jan Kiszka wrote:
On 2011-05-12 11:33, Joerg Roedel wrote:
Anyway, I thought about a paravirt-approach instead of implementing a
real PMU... But there are certainly good reasons for both.
Paravirt
Hi,
As part of some of the work for my project, I have been looking at
tracing some of the events in the guest from inside the host. In
my usecase, I have been looking to co-relate the time of a network
packet arrival with that in the host. ftrace makes such arbitrary
use quite simple, so I went
On 05/12/2011 04:06 PM, Joerg Roedel wrote:
On Thu, May 12, 2011 at 12:51:11PM +0300, Avi Kivity wrote:
On 05/12/2011 12:33 PM, Joerg Roedel wrote:
Gaah, I was just about to submit a talk about PMU virtualization for KVM
Forum :)
Speed matters.
I'll take that as an argument for
On Thu, May 12, 2011 at 03:23:39PM +0200, Jan Kiszka wrote:
On 2011-05-12 15:11, Joerg Roedel wrote:
Seriously, I think such decisions should be technical only and not
political like that. The losers of such political decisions are always
the users because they don't get useful features
On Thu, May 12, 2011 at 04:31:38PM +0300, Avi Kivity wrote:
- when the cpu gains support for virtualizing the architectural feature,
we transparently speed the guest up, including support for live
migrating from a deployment that emulates the feature to a deployment
that properly
On Thu, May 12, 2011 at 04:38:17PM +0300, Avi Kivity wrote:
On 05/12/2011 04:06 PM, Joerg Roedel wrote:
AMD processors don't implement that cpuid leaf.
Right. But if an AMD processor were to implement that leaf, it would be
in a compatible manner, yes?
No official statement, but I guess
On 05/12/2011 05:24 PM, Joerg Roedel wrote:
Paravirtualizing does have its advantages. For the PMU, for example, we
can have a single hypercall read and reprogram all counters, saving
*many* exits. But I think we need to start from the architectural PMU
and see exactly what the
On 05/12/2011 05:37 PM, Avi Kivity wrote:
I've considered something similar for mmio - use hypercalls for
ordinary mmio to avoid calling into the emulator - but virtio uses pio
which isn't emulated and we don't have massive consumers of mmio
(except perhaps hpet).
Say,
enum {
On 05/11/11 19:11, Glauber Costa wrote:
This patch adds a dummy legacy ISA device whose responsibility is to
deploy sgabios, an option rom for a serial graphics adapter.
The proposal is that this device is always-on when -nographics,
but can otherwise be enable in any setup when -device sga is
On 05/12/2011 04:36 PM, Dhaval Giani wrote:
Hi,
As part of some of the work for my project, I have been looking at
tracing some of the events in the guest from inside the host. In
my usecase, I have been looking to co-relate the time of a network
packet arrival with that in the host. ftrace
On Thu, May 12, 2011 at 5:13 PM, Avi Kivity a...@redhat.com wrote:
On 05/12/2011 04:36 PM, Dhaval Giani wrote:
Hi,
As part of some of the work for my project, I have been looking at
tracing some of the events in the guest from inside the host. In
my usecase, I have been looking to co-relate
On Wed, May 11, 2011, Gleb Natapov wrote about Re: [PATCH 0/30] nVMX: Nested
VMX, v9:
On Mon, May 09, 2011 at 02:18:25PM +0300, Avi Kivity wrote:
..
We can probably merge the next iteration if there aren't significant
comments from others.
..
The only worrying thing is the issue you raise
On 05/12/2011 06:39 PM, Dhaval Giani wrote:
I think that one hypercall per trace is too expensive. Tracing is meant to
be lightweight! I think the guest can log to a buffer, which is flushed on
overflow or when a vmexit occurs. That gives us automatic serialization
between a vcpu and
On Thu, May 12, 2011 at 06:42:28PM +0300, Nadav Har'El wrote:
So I guess my question is, and Avi and Gleb I'd love your comments about this
question: Is it really beneficial that I rewrite the ugly nested-VMX
injection code to be somewhat-ugly in exactly the same way that nested-SVM
injection
On 05/12/2011 06:57 PM, Gleb Natapov wrote:
On Thu, May 12, 2011 at 06:42:28PM +0300, Nadav Har'El wrote:
So I guess my question is, and Avi and Gleb I'd love your comments about this
question: Is it really beneficial that I rewrite the ugly nested-VMX
injection code to be somewhat-ugly in
On 05/12/2011 06:42 PM, Nadav Har'El wrote:
Our second conclusion (and I hope that I'm not offending anyone here)
is that the changes for L2 interrupt injection in both SVM and VMX are both
ugly - they are just ugly in different ways. Both modified the non-nested
code in strange places in
Hi,
On Thu, May 12, 2011, Gleb Natapov wrote about Re: [PATCH 0/30] nVMX: Nested
VMX, v9:
That is exactly what should be done and what I have in mind when I am
asking to change VMX code to be SVM like. To achieve what you outlined
above gradually we need to move common VMX and SVM logic into
On Thu, May 12, 2011 at 07:31:15PM +0300, Nadav Har'El wrote:
Hi,
On Thu, May 12, 2011, Gleb Natapov wrote about Re: [PATCH 0/30] nVMX: Nested
VMX, v9:
That is exactly what should be done and what I have in mind when I am
asking to change VMX code to be SVM like. To achieve what you
On 05/12/2011 07:51 PM, Gleb Natapov wrote:
But if my interpretation of the code is correct, SVM isn't much closer
than VMX to the goal of moving this logic to x86.c. When some logic is
moved there, both SVM and VMX code will need to change - perhaps even
considerably. So how will it be
On Thu, May 12, 2011 at 07:08:59PM +0300, Avi Kivity wrote:
On 05/12/2011 06:57 PM, Gleb Natapov wrote:
On Thu, May 12, 2011 at 06:42:28PM +0300, Nadav Har'El wrote:
So I guess my question is, and Avi and Gleb I'd love your comments about
this
question: Is it really beneficial that I
On Thu, May 12, 2011 at 8:42 AM, Avi Kivity a...@redhat.com wrote:
On 05/12/2011 06:39 PM, Dhaval Giani wrote:
I think that one hypercall per trace is too expensive. Tracing is meant
to
be lightweight! I think the guest can log to a buffer, which is flushed
on
overflow or
Just thought I should pop a note out here that I have been using my
Radeon 5850 for OpenCL inside KVM (fglrx) successfully for nearly a week now.
Commit: c7b3e90e20c512a992865c38db03543a654e5d12
Motherboard: Intel DQ67SW
CPU: Intel Core i5-2400
Host node: Linux 2.6.37-gentoo-r4 (untainted)
***
commit b764422bb0b46b00b896f6d4538ac3d3dde9e56b
(kvm tools: Add support for multiple virtio-blk)
removed the VIRTIO_BLK_F_SEG_MAX publishment to guest.
There is no reason we should not support it. Just bring it back.
Signed-off-by: Asias He asias.he...@gmail.com
---
tools/kvm/virtio/blk.c |
With this patch we can have
-c --cpus
-m --mem
-d --disk
-k --kernel
-i --initrd
which is more consistent and easy to remember.
The patch also frees up -s, -g option.
Ingo suggestied
'''
The debug options should probably be concentrated under a --debug
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