Avi Kivity wrote:
Jan Kiszka wrote:
Userland-located ROM memory is not available via kvm-physical_memory +
guest_address. To let kvm_show_code also dump useful information when
some problem in ROM (BIOS...) occurs, this patch first tries to obtain
the memory content via the mmio_read callback
Avi Kivity wrote:
Jan Kiszka wrote:
This still leaves me with the question how to handle the case when the
host sets and arms some debug registers to debug the guest and the
latter does the same to debug itself. Guest access will be trapped, OK,
but KVM will then have to decide which value
Jan Kiszka wrote:
This looks bogus, but it is so far without practical impact (phys_start
is always 0 when we do the calculation).
Signed-off-by: Jan Kiszka [EMAIL PROTECTED]
---
libkvm/libkvm.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Index: b/libkvm/libkvm.c
Jan Kiszka wrote:
Avi Kivity wrote:
Jan Kiszka wrote:
This still leaves me with the question how to handle the case when the
host sets and arms some debug registers to debug the guest and the
latter does the same to debug itself. Guest access will be trapped, OK,
but KVM will then
Jan Kiszka wrote:
Userland-located memory is not unconditionally available via
kvm-physical_memory + guest_address. To let kvm_show_code also dump
useful information when, e.g., some problem in ROM (BIOS...) occurs,
this patch tries to obtain the memory content via the mmio_read
callback. If
Jerone Young wrote:
This patch removes static x86 entries and makes things work for multiple
archs.
Applied, thanks,
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
Andrea Arcangeli wrote:
This make sure not to schedule in atomic during fx_init. I also
changed the name of fpu_init to fx_finit to avoid duplicating the name
with fpu_init that is already used in the kernel, this makes grep
simpler if nothing else.
Applied, thanks. Dynamic allocation
Anthony Liguori wrote:
In vmx.c:alloc_identity_pagetable() we grab a reference to the EPT identity
page table via gfn_to_page(). We never release this reference though.
This patch releases the reference to this page on VM destruction. I haven't
tested this with EPT.
Applied, thanks.
Chris Lalancette wrote:
Chris Lalancette wrote:
Attached is a patch that fixes a guest crash when booting older Linux
kernels.
The problem stems from the fact that we are currently emulating
MSR_K7_EVNTSEL[0-3], but not emulating MSR_K7_PERFCTR[0-3]. Because of this,
Jan Luebbe wrote:
Hi!
I'm preparing kvm-67 for debian. While testing i noticed a problem:
When booting the debian installer from the official CD [1] this problem:
Call Trace:
[c0146d5b] kmem_cache_create+0x15e/0x410
Code: c3 57 56 53 89 c6 9c 5f fa 8b 08 83 39 00
David Abrahams wrote:
Jon iroquoi at gmail.com writes:
I use:
export QEMU_AUDIO_DRV=alsa
export QEMU_AUDIO_DAC_FIXED_FREQ=48000
export QEMU_AUDIO_ADC_FIXED_FREQ=48000
export QEMU_ALSA_DAC_BUFFER_SIZE=16384
Buffer size is very important, else it crackles and pops for me.
Fabian Deutsch wrote:
Avi Kivity wrote:
Fabian Deutsch wrote:
Hey.
I've been trying Microsoft Windows 2003 a couple of times. The wiki
tells me that everything should work okay. It does, when using -smp 1,
but gets ugly when using -smp 2 or so.
SO might it be useful, to add the
nadim khemir wrote:
Hi, great work.
While playing with kvm-qemu I noticed a few points that might be of interrest:
1/ -loadvm and -snapshot don't work together. It works as if -loadvm wasn't
passed as argument
2/ two instances of kvm can be passed the same -hda. There is no locking
Amit Shah wrote:
+static irqreturn_t
+kvm_pci_pt_dev_intr(int irq, void *dev_id)
+{
+ struct kvm_pci_pt_dev_list *match;
+ struct kvm *kvm = (struct kvm *) dev_id;
+
+ if (!test_bit(irq, pt_irq_handled))
+ return IRQ_NONE;
+
+ if (test_bit(irq,
Just 2 pills per day for an increased growth before your very eyes
http://www.probenwau.com/
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Mark McLoughlin wrote:
The -kernel option generates a new boot sector for
the boot drive which jumps directly to the supplied
kernel rather than running the standard bootloader.
Trivially fix generate_bootsect() to handle the
case where we're booting using extboot.
Applied, thanks.
--
Joerg Roedel wrote:
The current KVM x86 exception code handles double and triple faults only for
page fault exceptions. This patch extends this detection for every exception
that gets queued for the guest.
Some double faults are handled serially rather than generating a #DF.
For example
Jan Kiszka wrote:
Yeah, it is. Reminds me of another warning I recently came across
(offsets may vary due to other patches:
==5801== 1 errors in context 1 of 2:
==5801== Conditional jump or move depends on uninitialised value(s)
==5801==at 0x53F4AE: kvm_register_userspace_phys_mem
On Friday 02 May 2008 16:05:17 Avi Kivity wrote:
Amit Shah wrote:
+static irqreturn_t
+kvm_pci_pt_dev_intr(int irq, void *dev_id)
+{
+ struct kvm_pci_pt_dev_list *match;
+ struct kvm *kvm = (struct kvm *) dev_id;
+
+ if (!test_bit(irq, pt_irq_handled))
+ return IRQ_NONE;
Amit Shah wrote:
Seems to me the only choice here is to mask the interrupt at the ioapic
level, wait until the guest acks the interrupt, then unmask the interrupt.
OK; will that create problems if the line is shared?
It will not work with shared interrupts (unless all users of the
Avi Kivity wrote:
nadim khemir wrote:
Hi, great work.
While playing with kvm-qemu I noticed a few points that might be of
interrest:
1/ -loadvm and -snapshot don't work together. It works as if -loadvm wasn't
passed as argument
2/ two instances of kvm can be passed the same -hda.
On Fri, May 02, 2008 at 01:52:18PM +0300, Avi Kivity wrote:
nadim khemir wrote:
Hi, great work.
While playing with kvm-qemu I noticed a few points that might be of
interrest:
1/ -loadvm and -snapshot don't work together. It works as if -loadvm wasn't
passed as argument
2/ two
Hi,
in the DSDT there are two different ways of defining, how an interrupt
is supposed to be routed. Currently we are using the LNKA - LNKD method,
which afaict is for legacy support.
The other method is to directly tell the Operating System, which APIC
pin the device is attached to. We can
Anthony Liguori wrote:
2/ two instances of kvm can be passed the same -hda. There is no
locking whatsoever. This messes up things seriously.
These two are upstream qemu problems. Copying qemu-devel.
I guess using file locking by default would improve the situation,
and we can
The in-kernel PIT emulation ignores pending timers if operating
under mode 3, which for example Hurd uses.
This mode should output a square wave, high for (N+1)/2 counts and low
for (N-1)/2 counts. As we only care about the resulting interrupts, the
period is N, and mode 3 is the same as mode 2
Daniel P. Berrange wrote:
I guess using file locking by default would improve the situation, and
we can add a -drive ...,exclusive=no option for people playing with
cluster filesystems.
Turning on file locking by default will break existing apps / deployments
using shared disks. IMHO
Hello everyone,
1/11 is the latest version of the mmu-notifier-core patch.
As usual all later 2-11/11 patches follows but those aren't meant for 2.6.26.
Thanks!
Andrea
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This SF.net email is sponsored by the 2008
# HG changeset patch
# User Andrea Arcangeli [EMAIL PROTECTED]
# Date 1209740185 -7200
# Node ID c85c85c4be165eb6de16136bb97cf1fa7fd5c88f
# Parent 1489529e7b53d3f2dab8431372aa4850ec821caa
get_task_mm
get_task_mm should not succeed if mmput() is running and has reduced
the mm_users count to zero.
# HG changeset patch
# User Andrea Arcangeli [EMAIL PROTECTED]
# Date 1209740175 -7200
# Node ID 1489529e7b53d3f2dab8431372aa4850ec821caa
# Parent 5026689a3bc323a26d33ad882c34c4c9c9a3ecd8
mmu-notifier-core
With KVM/GFP/XPMEM there isn't just the primary CPU MMU pointing to
pages. There are
# HG changeset patch
# User Andrea Arcangeli [EMAIL PROTECTED]
# Date 1209740186 -7200
# Node ID a8ac53b928dfcea0ccb326fb7d71f908f0df85f4
# Parent 14e9f5a12bb1657fa6756e18d5dac71d4ad1a55e
unmap vmas tlb flushing
Move the tlb flushing inside of unmap vmas. This saves us from passing
a pointer to
# HG changeset patch
# User Andrea Arcangeli [EMAIL PROTECTED]
# Date 1209740185 -7200
# Node ID 14e9f5a12bb1657fa6756e18d5dac71d4ad1a55e
# Parent ea8fc9187b6d3ef2742061b4f62598afe55281cf
free-pgtables
Move the tlb flushing into free_pgtables. The conversion of the locks
taken for reverse map
# HG changeset patch
# User Andrea Arcangeli [EMAIL PROTECTED]
# Date 1209740186 -7200
# Node ID 74b873f3ea07012e2fc864f203edf1179865feb1
# Parent a8ac53b928dfcea0ccb326fb7d71f908f0df85f4
rwsem contended
Add a function to rw_semaphores to check if there are any processes
waiting for the
# HG changeset patch
# User Andrea Arcangeli [EMAIL PROTECTED]
# Date 1209740186 -7200
# Node ID de28c85baef11b90c993047ca851a2f52c85a5be
# Parent 74b873f3ea07012e2fc864f203edf1179865feb1
i_mmap_rwsem
The conversion to a rwsem allows notifier callbacks during rmap traversal
for files. A rw style
# HG changeset patch
# User Andrea Arcangeli [EMAIL PROTECTED]
# Date 1209740186 -7200
# Node ID 0be678c52e540d5f5d5fd9af549b57b9bb018d32
# Parent de28c85baef11b90c993047ca851a2f52c85a5be
anon-vma-rwsem
Convert the anon_vma spinlock to a rw semaphore. This allows concurrent
traversal of reverse
# HG changeset patch
# User Andrea Arcangeli [EMAIL PROTECTED]
# Date 1209740226 -7200
# Node ID 721c3787cd42043734331e54a42eb20c51766f71
# Parent 0be678c52e540d5f5d5fd9af549b57b9bb018d32
mm_lock-rwsem
Convert mm_lock to use semaphores after i_mmap_lock and anon_vma_lock
conversion.
# HG changeset patch
# User Andrea Arcangeli [EMAIL PROTECTED]
# Date 1209740229 -7200
# Node ID 4f462fb3dff614cd7d971219c3feaef0b43359c1
# Parent 721c3787cd42043734331e54a42eb20c51766f71
export zap_page_range for XPMEM
XPMEM would have used sys_madvise() except that madvise_dontneed()
returns
# HG changeset patch
# User Andrea Arcangeli [EMAIL PROTECTED]
# Date 1209740229 -7200
# Node ID b4bf6df98bc00bfbef9423b0dd31cfdba63a5eeb
# Parent 4f462fb3dff614cd7d971219c3feaef0b43359c1
mmap sems
This patch adds a lock ordering rule to avoid a potential deadlock when
multiple mmap_sems need to
On Fri, May 02, 2008 at 12:28:32PM +0300, Avi Kivity wrote:
Applied, thanks. Dynamic allocation for the fpu state was introduced in
2.6.26-rc, right?
It seems very recent, hit mainline on 30 Apr.
Also we may want to think if there's something cheaper than fx_save to
trigger a math exception
Avi Kivity wrote:
Well, one user (me) has made this mistake, several times.
I guess it's usage patterns. I'm pretty religious about using -snapshot
unless I have a very specific reason not to. I have never encountered
this problem myself.
FWIW, the whole override thing for Xen has been an
On Fri, May 02, 2008 at 04:55:24PM +0200, Alexander Graf wrote:
Hi,
in the DSDT there are two different ways of defining, how an interrupt
is supposed to be routed. Currently we are using the LNKA - LNKD method,
which afaict is for legacy support.
The other method is to directly tell the
Daniel P. Berrange wrote:
2/ two instances of kvm can be passed the same -hda. There is no locking
whatsoever. This messes up things seriously.
That depends entirely on what you are doing with the disk in the guest OS.
The disk could be hosting a cluster filesystem. The guest OS could
Avi Kivity wrote:
David Abrahams wrote:
Jon iroquoi at gmail.com writes:
I use:
export QEMU_AUDIO_DRV=alsa
export QEMU_AUDIO_DAC_FIXED_FREQ=48000
export QEMU_AUDIO_ADC_FIXED_FREQ=48000
export QEMU_ALSA_DAC_BUFFER_SIZE=16384
Buffer size is very important, else it crackles and pops for
Add 3 PCI bridges to the ACPI table:
- Move IRQ routing, slot device and GPE processing to separate files
which can be included from acpi-dsdt.dsl.
- Add _SUN methods to every slot device so as to avoid collisions
in OS handling.
- Fix copypaste typo in slot devices 8/9 and 24/25.
This table
Support more than one bus in the ACPI PCI hotplug code.
Currently 4 buses are supported, but can be easily extended.
Signed-off-by: Marcelo Tosatti [EMAIL PROTECTED]
Index: kvm-userspace.pci3/qemu/hw/acpi.c
===
---
Add three PCI bridges to support 128 slots.
Changes since v1:
- Remove I/O address range support (so standard PCI I/O space is used).
- Verify that there's no special quirks for 82801 PCI bridge.
- Introduce separate flat IRQ mapping function for non-SPARC targets.
--
Initialize and configure 3 PCI bridges (Intel 82801 PCI Bridge rev d9),
which have no special handling (quirks) in current Linux versions.
IO base/limit registers are initialized with zero and read-only,
indicating that the bridge does not support IO address ranges.
To avoid potentially breaking
Hey guys,
This was already discussed, mostly on kvm-devel (but qemu list always copied,
if you remember),
and here is the pre work I've done. I don't feel it to be mergeable yet, but
with your
comments, I expect to get it in a good shape soon. This is not extensibly
tested (but it will).
---
exec-all.h | 16 ++--
exec.c | 12 ++--
kqemu.c|2 ++
3 files changed, 18 insertions(+), 12 deletions(-)
diff --git a/exec-all.h b/exec-all.h
index 784d0ac..9925a80 100644
--- a/exec-all.h
+++ b/exec-all.h
@@ -578,6 +578,8 @@ typedef struct QEMUAccel {
---
cpu-exec.c | 29 ++---
exec-all.h | 10 ++
kqemu.c|3 +++
3 files changed, 31 insertions(+), 11 deletions(-)
diff --git a/cpu-exec.c b/cpu-exec.c
index 3246264..79da619 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -35,6 +35,22 @@
#include
---
exec-all.h|8 +++-
kqemu.c |1 +
target-i386/helper2.c |4 +---
3 files changed, 9 insertions(+), 4 deletions(-)
diff --git a/exec-all.h b/exec-all.h
index 621e1ca..784d0ac 100644
--- a/exec-all.h
+++ b/exec-all.h
@@ -577,6 +577,7 @@ static inline
This patch introduces QEMUAccel, a placeholder for function pointers
that aims at helping qemu to abstract accelerators such as kqemu and
kvm (actually, the 'accelerator' name was proposed by avi kivity, since
he loves referring to kvm that way).
To begin with, the accelerator is given the
Glauber Costa wrote:
This patch introduces QEMUAccel, a placeholder for function pointers
that aims at helping qemu to abstract accelerators such as kqemu and
kvm (actually, the 'accelerator' name was proposed by avi kivity, since
he loves referring to kvm that way).
Just a little thought...
On Thursday 01 May 2008 7:16:53 pm Marcelo Tosatti wrote:
On Thu, May 01, 2008 at 06:00:44PM -0500, Karl Rister wrote:
Hi
I have been trying to do some testing of a large number of guests (72) on
a big multi-node IBM box (8 sockets, 32 cores, 128GB) and I am having
various issues with
This patch reworks the IO thread to use signalfd() instead of sigtimedwait().
This will eliminate the need to use SIGIO everywhere. In this version of the
patch, we use signalfd() when it's available. When it isn't available, we
instead use a pipe() that is written to in each signal handler.
Jamie Lokier wrote:
Glauber Costa wrote:
This patch introduces QEMUAccel, a placeholder for function pointers
that aims at helping qemu to abstract accelerators such as kqemu and
kvm (actually, the 'accelerator' name was proposed by avi kivity, since
he loves referring to kvm that way).
Paul Brook wrote:
Maybe 'VCPU' would be a clearer name? QEMU provides its own VCPU, and
KQEMU+QEMU also provide one toegether. While KVM provides essentially
one or more whole VCPUs by itself and uses QEMU's drivers only doesn't
it?
-- Jamie
VCPU is rather confusing with the vcpus
Hi,
Since commit a0d22c57fbf0c67d73ab7ca3416841030e0bc22f, FreeBSD guests
takes all host CPU even when they are idle. Reverting this patch in
kvm-67 or git tree fixes (or workarounds?) the problem. Using
-no-kvm-pit also workarounds the problem.
Some more details:
Host: Linux 2.6.24 x86-64
CPU:
On Fri, May 02, 2008 at 10:39:25PM +0200, Aurelien Jarno wrote:
Hi,
Since commit a0d22c57fbf0c67d73ab7ca3416841030e0bc22f, FreeBSD guests
takes all host CPU even when they are idle. Reverting this patch in
kvm-67 or git tree fixes (or workarounds?) the problem. Using
-no-kvm-pit also
On Fri, May 02, 2008 at 07:23:22PM -0300, Marcelo Tosatti wrote:
On Fri, May 02, 2008 at 10:39:25PM +0200, Aurelien Jarno wrote:
Hi,
Since commit a0d22c57fbf0c67d73ab7ca3416841030e0bc22f, FreeBSD guests
takes all host CPU even when they are idle. Reverting this patch in
kvm-67 or git
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