We want to configure several things in KVM that go beyond what
ENABLE_CAP (we need payload) or ONE_REG (we need it for the VM
and we need to do more complex actions) can provide. Instead of
adding several s390 specific ioctls, lets provide a configuration
and control device that encapsulates
On 01/04/14 16:58, Alexander Graf wrote:
On 04/01/2014 04:47 PM, Christian Borntraeger wrote:
From: Ekaterina Tumanova tuman...@linux.vnet.ibm.com
Add KVM_DEV_TYPE_S390_CONFIG kvm device that contains
configuration and control attributes of particular vm.
The device is created
On 01/04/14 17:38, Paolo Bonzini wrote:
Il 01/04/2014 16:47, Christian Borntraeger ha scritto:
From: Ekaterina Tumanova tuman...@linux.vnet.ibm.com
The following patch adds Qemu CONFIG device,
which interacts with kvm CONFIG device by calling KVM_CREATE_DEVICE
(to create the device in kernel
On 01/04/14 17:12, Alexander Graf wrote:
On 04/01/2014 05:04 PM, Christian Borntraeger wrote:
On 01/04/14 16:58, Alexander Graf wrote:
On 04/01/2014 04:47 PM, Christian Borntraeger wrote:
From: Ekaterina Tumanova tuman...@linux.vnet.ibm.com
Add KVM_DEV_TYPE_S390_CONFIG kvm device
On 01/04/14 16:59, Alexander Graf wrote:
On 04/01/2014 04:47 PM, Christian Borntraeger wrote:
We want to configure several things in KVM that go beyond what
ENABLE_CAP (we need payload) or ONE_REG (we need it for the VM
and we need to do more complex actions) can provide. Instead of
adding
On 01/04/14 21:36, Alexander Graf wrote:
[...]
Speaking of which, why don't we just forward STSI to user space with an
ENABLE_CAP and handle all of this there? It's not performance critical at
all, right?
No, performance is not critical.
The thing is, that we definitely need the kernel to
On 31/03/14 12:51, Andreas Färber wrote:
Hi,
Am 31.03.2014 12:40, schrieb Juan Quintela:
Please, send any topic that you are interested in covering.
I would like to discuss the state of the QEMU release process, please:
* -rc1 has not been tagged.
* Who besides Anthony could upload a
-by: Christian Borntraeger borntrae...@de.ibm.com
When doing a V2, you should remove my Signed-off-by. ;-)
But at least we can now add my
Acked-by: Christian Borntraeger borntrae...@de.ibm.com
Ingo, Peter, Paul,
If you agree with this solution, I would like to have this in the next merge
s390x-irqfd
has been updated accordingly.
The whole series looks good to me.
Acked-by: Christian Borntraeger borntrae...@de.ibm.com
Tested-by: Christian Borntraeger borntrae...@de.ibm.com
Paolo,
since we also touch KVM code, and the necessary counter part in
in Linux kvm/next we could push
grace period is no better than RCU.
Really? This is not what Christian Borntraeger claimed at
http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/118083 -- in fact,
Andrew Theurer is currently testing a variant of that patch and I was going
to post it for 3.16.
Have you tried
On 26/03/14 09:22, Gonglei (Arei) wrote:
Without patches, ping time can jump from 0.3ms to 2ms-30ms. With
synchronize_srcu
patch, ping time is worse. With synchronize_srcu_expedited patch, ping time
is
overall good, though sometimes ping time jump to 1ms-3ms.
Just to understand whats
workloads
Christian Borntraeger (1):
KVM: s390: randomize sca address
Jens Freimann (2):
KVM: s390: fix calculation of idle_mask array size
KVM: s390: clear local interrupts at cpu initial reset
Thomas Huth (1
We allocate a page for the 2k sca, so lets use the space to improve
hit rate of some internal cpu caches. No need to change the freeing
of the page, as this will shift away the page offset bits anyway.
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
Reviewed-by: David Hildenbrand d
From: Jens Freimann jf...@linux.vnet.ibm.com
Empty list of local interrupts when vcpu goes through initial reset
to provide a clean state
Signed-off-by: Jens Freimann jf...@linux.vnet.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm/interrupt.c | 14
(long) which returnes the size in bytes, but BITS_TO_LONGS
Signed-off-by: Jens Freimann jf...@linux.vnet.ibm.com
Reviewed-by: Cornelia Huck cornelia.h...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/include/asm/kvm_host.h | 3 +--
1 file changed, 1 insertion
.
Signed-off-by: Thomas Huth th...@linux.vnet.ibm.com
Reviewed-by: Cornelia Huck cornelia.h...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm/sigp.c | 14 ++
1 file changed, 6 insertions(+), 8 deletions(-)
diff --git a/arch/s390/kvm/sigp.c b
On 25/03/14 14:53, Paolo Bonzini wrote:
Il 25/03/2014 14:35, Christian Borntraeger ha scritto:
We allocate a page for the 2k sca, so lets use the space to improve
hit rate of some internal cpu caches. No need to change the freeing
of the page, as this will shift away the page offset bits
On 25/03/14 14:56, Paolo Bonzini wrote:
Il 25/03/2014 14:35, Christian Borntraeger ha scritto:
+spin_lock_bh(li-lock);
+list_for_each_entry_safe(inti, n, li-list, list) {
+list_del(inti-list);
+kfree(inti);
+}
+atomic_set(li-active, 0);
+spin_unlock_bh
On 25/03/14 15:02, Paolo Bonzini wrote:
Il 25/03/2014 14:35, Christian Borntraeger ha scritto:
From: Thomas Huth th...@linux.vnet.ibm.com
When kvm_get_vcpu() returned NULL for the destination CPU in
__sigp_emergency() or __sigp_external_call(), the memory for the
inti structure
On 25/03/14 18:29, Paolo Bonzini wrote:
Hi all,
I've pushed the last set of updates to kvm/next for the 3.15 merge window. I
don't expect any other changes for either x86 or s390 (thanks Christian!).
The pull request is already pretty beefy.
I would like to know from ARM and PPC
On 25/03/14 18:29, Paolo Bonzini wrote:
Hi all,
I've pushed the last set of updates to kvm/next for the 3.15 merge window. I
don't expect any other changes for either x86 or s390 (thanks Christian!).
The pull request is already pretty beefy.
I would like to know from ARM and PPC
On 21/03/14 13:52, Cornelia Huck wrote:
Hi,
here's the next iteration of my patchset introducing irqfds for s390.
Changes from v2:
- rebased against current kvm/queue
- kvm common code lock fix is already in queue
- move some changes that belonged in patch 2 from patch 3
- add a limit
: 'kvm-s390:*'
This patch adds an extra rule to event_legacy_tracepoint which handles
those cases. Without the patch, perf will not accept such tracepoints in
the -e option.
Signed-off-by: Alexander Yarygin yary...@linux.vnet.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
-by: Cornelia Huck cornelia.h...@de.ibm.com
Acked-by: Christian Borntraeger borntrae...@de.ibm.com
---
Documentation/virtual/kvm/api.txt |6 --
arch/s390/kvm/kvm-s390.c | 24
include/uapi/linux/kvm.h |5 +
3 files changed, 33 insertions(+), 2
fails.
Otherwise looks good.
Acked-by: Christian Borntraeger borntrae...@de.ibm.com
--
To unsubscribe from this list: send the line unsubscribe kvm in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
be merged into the previous patch?
Otherwise:
Acked-by: Christian Borntraeger borntrae...@de.ibm.com
@@ -1272,3 +1278,123 @@ struct kvm_device_ops kvm_flic_ops = {
.create = flic_create,
.destroy = flic_destroy,
};
+
+static unsigned long get_ind_bit(__u64 addr, unsigned long
in the kernel and dont return to userspace,
even if in ucontrol mode.
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
Reviewed-by: Cornelia Huck cornelia.h...@de.ibm.com
CC: sta...@vger.kernel.org
---
arch/s390/kvm/kvm-s390.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git
the vcpu
creation code already checks against KVM_MAX_VCPUS.
Signed-off-by: Dominik Dingel din...@linux.vnet.ibm.com
Acked-by: Cornelia Huck cornelia.h...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm/interrupt.c | 2 --
arch/s390/kvm/kvm-s390.c | 2
exits
- get rid of BUG_ONs in hot inner loops
Christian Borntraeger (1):
KVM: s390: Optimize ucontrol path
Dominik Dingel (1):
KVM: s390: Removing untriggerable BUG_ONs
arch/s390/kvm/interrupt.c | 2 --
arch/s390/kvm
in kvm_irqfd_assign().
Signed-off-by: Cornelia Huck cornelia.h...@de.ibm.com
Do you still have the lockdep message somewhere?
Looking at the patch and the description this makes sense. Even without
irqfd for s390:
Reviewed-by: Christian Borntraeger borntrae...@de.ibm.com
Paolo, maybe this patch can go
-by: Cornelia Huck cornelia.h...@de.ibm.com
Reviewed-by: Christian Borntraeger borntrae...@de.ibm.com
---
Documentation/virtual/kvm/api.txt |6 --
arch/s390/kvm/kvm-s390.c | 24
include/uapi/linux/kvm.h |5 +
3 files changed, 33 insertions
On 04/03/14 10:05, Cornelia Huck wrote:
On Tue, 25 Feb 2014 18:25:15 +0100
Cornelia Huck cornelia.h...@de.ibm.com wrote:
Handle the new CCW_CMD_SET_IND_ADAPTER command enabling adapter interrupts
on guest request. When active, host-guest notifications will be handled
via global_indicator -
for KVM: s390:
- It contains the guest kernel part for adapter interrupt support
for virtio-ccw, no irqfd yet
- cleanups, getting rid of some interrupt data structure
- ONEREG access to GBEA and PP
- Fixes for virtio-ccw, sigp
Christian
For migration/reset we want to expose the guest breaking event
address register to userspace. Lets use ONE_REG for that purpose.
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
Reviewed-by: Jason J. Herne jjhe...@linux.vnet.ibm.com
---
arch/s390/include/uapi/asm/kvm.h | 1 +
arch
-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/include/asm/kvm_host.h | 1 -
arch/s390/kvm/interrupt.c| 6 +-
arch/s390/kvm/kvm-s390.c | 5 +-
arch/s390/kvm/sigp.c | 124 ---
4 files changed, 56 insertions(+), 80 deletions
-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/include/asm/irq.h | 1 +
arch/s390/kernel/irq.c| 1 +
drivers/s390/kvm/virtio_ccw.c | 278 --
3 files changed, 270 insertions(+), 10 deletions(-)
diff --git a/arch/s390/include/asm/irq.h b
From: Martin Schwidefsky schwidef...@de.ibm.com
Add airq_iv_alloc and airq_iv_free to allocate and free consecutive
ranges of irqs from the interrupt vector.
Signed-off-by: Martin Schwidefsky schwidef...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390
commit d208c79d63e06457eef077af770d23dc4cde4d43 (KVM: s390: Enable
the LPP facility for guests) enabled the LPP instruction for guests.
We should expose the program parameter as a pseudo register for
migration/reset etc. Lets also reset this value on initial CPU
reset.
Signed-off-by: Christian
From: Jens Freimann jf...@linux.vnet.ibm.com
We don't need to loop over all cpus to get the number of
vcpus. Let's use the available counter online_vcpus instead.
Signed-off-by: Jens Freimann jf...@linux.vnet.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm
rid of the floating interrupt
lock here by using kvm_get_vcpu() to get the local_int struct of the
destination CPU.
Signed-off-by: Thomas Huth th...@linux.vnet.ibm.com
Reviewed-by: Cornelia Huck cornelia.h...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm
the ccw_device lock) prior to
freeing the vcdev pointer memory removes a critical path.
Signed-off-by: Heinz Graalfs graa...@linux.vnet.ibm.com
Acked-by: Cornelia Huck cornelia.h...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
drivers/s390/kvm/virtio_ccw.c | 35
On 01/03/14 20:27, Vlad Yasevich wrote:
On 03/01/2014 06:15 AM, Christian Borntraeger wrote:
On 28/02/14 23:14, Vlad Yasevich wrote:
On 02/27/2014 03:52 PM, Christian Borntraeger wrote:
Vlad,
commit 6acf54f1cf0a6747bac9fea26f34cfc5a9029523
macvtap: Add support of packet capture
On 02/03/14 02:21, Vlad Yasevich wrote:
On 03/01/2014 02:27 PM, Vlad Yasevich wrote:
On 03/01/2014 06:15 AM, Christian Borntraeger wrote:
On 28/02/14 23:14, Vlad Yasevich wrote:
On 02/27/2014 03:52 PM, Christian Borntraeger wrote:
Vlad,
commit 6acf54f1cf0a6747bac9fea26f34cfc5a9029523
On 25/02/14 18:24, Cornelia Huck wrote:
Implement the new CCW_CMD_SET_IND_ADAPTER command and try to enable
adapter interrupts for every device on the first startup. If the host
does not support adapter interrupts, fall back to normal I/O interrupts.
virtio-ccw adapter interrupts use the
On 28/02/14 23:14, Vlad Yasevich wrote:
On 02/27/2014 03:52 PM, Christian Borntraeger wrote:
Vlad,
commit 6acf54f1cf0a6747bac9fea26f34cfc5a9029523
macvtap: Add support of packet capture on macvtap device.
causes a performance regression for iperf traffic between two KVM guests
on my
Vlad,
commit 6acf54f1cf0a6747bac9fea26f34cfc5a9029523
macvtap: Add support of packet capture on macvtap device.
causes a performance regression for iperf traffic between two KVM guests
on my s390 system. Both guests are connected via two macvtaps on the same OSA
network card.
Before that
On 25/02/14 18:25, Cornelia Huck wrote:
+int kvm_s390_io_adapter_map(uint32_t id, uint64_t map_addr, bool do_map)
+{
+struct kvm_s390_io_adapter_req req = {
+.id = id,
+.type = do_map ? KVM_S390_IO_ADAPTER_MAP : KVM_S390_IO_ADAPTER_UNMAP,
+.addr = map_addr,
+
Paolo,
here is the reworked yield heuristics series against kvm/queue with
your suggested changes.
Attached is a minimized testcase that reproduces the performance
win (runtime 0:50 instead of 1:00). The constants and the setup
seem a bit artificial but these seem to reproduce the problem on my
From: Michael Mueller m...@linux.vnet.ibm.com
Use the arch specific function kvm_arch_vcpu_runnable() to add a further
criterium to identify a suitable vcpu to yield to during undirected yield
processing.
Signed-off-by: Michael Mueller m...@linux.vnet.ibm.com
Reviewed-by: Christian Borntraeger
From: Michael Mueller m...@linux.vnet.ibm.com
A vcpu is defined to be runnable if an interrupt is pending.
Signed-off-by: Michael Mueller m...@linux.vnet.ibm.com
Reviewed-by: Christian Borntraeger borntrae...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390
Reviewed-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm/interrupt.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 1848080..fff070b 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
having multiple CPUs.
This is caused by the synchronize_rcu and the HZ=100 of s390.
By changing the code to use a private srcu we can speed things up.
This patch reduces the boot time till mounting root from 8 to 2
seconds on my s390 guest with 100 disks.
Signed-off-by: Christian Borntraeger
On 14/02/14 00:32, Paolo Bonzini wrote:
Il 13/02/2014 23:54, Christian Borntraeger ha scritto:
We had several variants but in the end we tried to come up with a patch that
does not
influence other architectures. Your proposal would certainly be fine for
s390,
but what impact does it have
On 13/02/14 23:37, Paolo Bonzini wrote:
Il 11/02/2014 12:45, Christian Borntraeger ha scritto:
From: Michael Mueller m...@linux.vnet.ibm.com
Commit s390/kvm: Use common waitqueue caused a performance regression
on s390. It turned out that a yield candidate was missed by just a simple
test
-off-by: Michael Mueller m...@linux.vnet.ibm.com
Reviewed-by: Christian Borntraeger borntrae...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
include/linux/kvm_host.h | 9 +
virt/kvm/Kconfig | 3 +++
virt/kvm/kvm_main.c | 2 +-
3 files changed, 13
and code analysis to solve this
issue was provided by Mao Chuan Li and his team in Beijing.
Signed-off-by: Michael Mueller m...@linux.vnet.ibm.com
Reviewed-by: Christian Borntraeger borntrae...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm/interrupt.c | 3
-by: Christian Borntraeger borntrae...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm/Kconfig| 1 +
arch/s390/kvm/kvm-s390.c | 7 +++
2 files changed, 8 insertions(+)
diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig
index c8bacbc..e44adef
Paolo, Gleb,
here are 3 patches that improve the s390 guest performance on contended
systems. Basic idea is to also allow yielding to CPUs which still sleep
but are runnable. The patch set should be no-ops for !s390.
Michael Mueller (3):
kvm: Introduction of kvm_arch_vcpu_dont_yield()
On 31/01/14 12:38, Paolo Bonzini wrote:
Il 30/01/2014 13:53, Christian Borntraeger ha scritto:
+static inline void kvm_async_page_present_async(struct kvm_vcpu *vcpu,
+struct kvm_async_pf *work)
+{
+#ifndef CONFIG_KVM_ASYNC_PF_SYNC
+kvm_arch_async_page_present
From: Dominik Dingel din...@linux.vnet.ibm.com
Commit KVM: async_pf: Provide additional direct page notification
missed the call from kvm_check_async_pf_completion to the new introduced
function.
Reported-by: Paolo Bonzini pbonz...@redhat.com
Signed-off-by: Dominik Dingel
This fixup fixes patch 5 and makes it equivalent to the code that
went through testing. Looks like the change from patch 5 does
not cause real problems. x86 will simply inject the completion
via kvm_arch_async_page_present in kvm_check_async_pf_completion.
s390 will inject twice (sync in execute
-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/x86/kvm/mmu.c | 2 +-
include/linux/kvm_host.h | 2 +-
virt/kvm/Kconfig | 4
virt/kvm/async_pf.c | 20 ++--
4 files changed, 24 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm
...@linux.vnet.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/include/asm/pgtable.h | 2 ++
arch/s390/include/asm/processor.h | 1 +
arch/s390/kvm/kvm-s390.c | 23 +--
arch/s390/mm/fault.c | 26 ++
4 files
Paolo, Gleb,
The following changes since commit c760f5e29d92adf5184589f1e616a4be146fb57c:
Merge tag 'kvm-s390-20140117' of
git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-queue
(2014-01-23 11:38:13 +0100)
are available in the git repository at:
...@linux.vnet.ibm.com
Reviewed-by: Cornelia Huck cornelia.h...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/include/asm/kvm_host.h | 34 +-
include/uapi/linux/kvm.h | 63
2 files changed
From: Dominik Dingel din...@linux.vnet.ibm.com
On s390 we are not able to cancel work. Instead we will flush the work and wait
for
completion.
Signed-off-by: Dominik Dingel din...@linux.vnet.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
virt/kvm/async_pf.c | 5
adapter interrupts,
as well as up to ASYNC_PF_PER_VCPU*KVM_MAX_VCPUS pfault done interrupts.
There are also sclp and machine checks. This gives us
(4*65536+8+64*64+1+1) = 266250 interrupts.
Suggested-by: Christian Borntraeger borntrae...@de.ibm.com
Signed-off-by: Jens Freimann jf
...@linux.vnet.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/include/uapi/asm/kvm.h | 3 +++
arch/s390/kvm/kvm-s390.c | 24
2 files changed, 27 insertions(+)
diff --git a/arch/s390/include/uapi/asm/kvm.h b/arch/s390/include/uapi
by the guest to enable async page
faults.
The async page faults will use an already existing guest interface for this
purpose, as described in CP Programming Services (SC24-6084).
Signed-off-by: Dominik Dingel din...@linux.vnet.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
-by: Jens Freimann jf...@linux.vnet.ibm.com
Reviewed-by: Cornelia Huck cornelia.h...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
Documentation/virtual/kvm/devices/s390_flic.txt | 36 +++
arch/s390/include/asm/kvm_host.h| 1 +
arch/s390/include/uapi/asm
into the guest. This leads to
hang situations with the old virtio transport that checks for
descriptor memory after guest memory. Instead of bailing out this
code now goes wild...
Lets re-add the check.
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm/kvm-s390.c |4
1 file
Paolo,
here is a fix for a regression that is in current kvm/next, which is
targetted for 3.14. Please apply
Christian Borntraeger (1):
KVM: s390: Fix memory access error detection
arch/s390/kvm/kvm-s390.c |4
1 file changed, 4 insertions(+)
--
1.7.9.5
The following changes since
On 16/01/14 19:56, Michael S. Tsirkin wrote:
On Thu, Jan 16, 2014 at 02:07:19PM +0100, Paolo Bonzini wrote:
Il 16/01/2014 14:06, Christian Borntraeger ha scritto:
Will you edit the patch description or shall I resend the patch?
I can edit the commit message.
Paolo
I think we really need
occurred and the ITDB has a valid format.
Signed-off-by: Michael Mueller m...@linux.vnet.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/include/asm/kvm_host.h | 15 ++-
arch/s390/kvm/intercept.c| 11 +++
arch/s390/kvm/kvm-s390.c
Paolo,
the following changes since commit 26a865f4aa8e66a6d94958de7656f7f1b03c6c56:
KVM: VMX: fix use after free of vmx-loaded_vmcs (2014-01-08 19:14:08 -0200)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux.git
tags/kvm-s390-20140117
...@linux.vnet.ibm.com
Signed-off-by: Cornelia Huck cornelia.h...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
drivers/s390/kvm/virtio_ccw.c | 11 +--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/drivers/s390/kvm/virtio_ccw.c b/drivers/s390/kvm
-by: Michael Mueller m...@linux.vnet.ibm.com
Acked-by: Cornelia Huck cornelia.h...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm/kvm-s390.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
by
Michael S. Tsirkin
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
virt/kvm/irqchip.c |2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/virt/kvm/irqchip.c b/virt/kvm/irqchip.c
index 20dc9e4..dbcfde7 100644
--- a/virt/kvm/irqchip.c
+++ b/virt/kvm/irqchip.c
the boot time till mounting root from 8 to 2 seconds
on my s390 guest with 100 disks.
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
include/linux/kvm_host.h | 1 +
virt/kvm/irqchip.c | 5 ++---
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/include/linux
for the unconverted
use of hlist_for_each_entry_rcu, hlist_add_head_rcu, hlist_del_init_rcu
is necessary, though. They look fine to me since they are protected by
outer functions.
In addition, we should also discuss if a global srcu (for all guests) is
fine.
Signed-off-by: Christian Borntraeger
On 16/01/14 13:59, Paolo Bonzini wrote:
Il 16/01/2014 13:44, Christian Borntraeger ha scritto:
I converted most of the rcu routines to srcu. Review for the unconverted
use of hlist_for_each_entry_rcu, hlist_add_head_rcu, hlist_del_init_rcu
is necessary, though. They look fine to me since
On 16/01/14 19:55, Michael S. Tsirkin wrote:
On Thu, Jan 16, 2014 at 01:44:20PM +0100, Christian Borntraeger wrote:
[...]
I converted most of the rcu routines to srcu. Review for the unconverted
[...]
That's nice but did you try to measure the overhead
on some interrupt-intensive workloads
Folks,
from time to time I update valgrind or qemu to work reasonably well
with KVM.
Now, newer KVMs have the ability to create subdevices of a KVM guest (e.g. an
in kernel
kvm interrupt controller) with the following ioctl:
#define KVM_CREATE_DEVICE _IOWR(KVMIO, 0xe0, struct
dropping valgrind devel since its subscribers only...
On 16/10/13 15:06, Paolo Bonzini wrote:
Il 16/10/2013 14:59, Christian Borntraeger ha scritto:
Now, newer KVMs have the ability to create subdevices of a KVM guest (e.g.
an in kernel
kvm interrupt controller) with the following ioctl
On 16/10/13 17:44, Gleb Natapov wrote:
On Wed, Oct 16, 2013 at 02:59:47PM +0200, Christian Borntraeger wrote:
Folks,
from time to time I update valgrind or qemu to work reasonably well
with KVM.
Now, newer KVMs have the ability to create subdevices of a KVM guest (e.g.
an in kernel
kvm
On 13/10/13 10:39, Gleb Natapov wrote:
On Tue, Oct 08, 2013 at 04:54:55PM +0200, Christian Borntraeger wrote:
From: Jens Freimann jf...@linux.vnet.ibm.com
This patch adds a floating irq controller as a kvm_device.
It will be necessary for migration of floating interrupts as well
...@linux.vnet.ibm.com
Reviewed-by: Cornelia Huck cornelia.h...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/include/asm/kvm_host.h | 34 +-
include/uapi/linux/kvm.h | 63
2 files changed
-6084).
Signed-off-by: Dominik Dingel din...@linux.vnet.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/include/asm/kvm_host.h | 22 +++
arch/s390/include/uapi/asm/kvm.h | 9 +++--
arch/s390/kvm/Kconfig| 2 +
arch/s390/kvm/Makefile
...@linux.vnet.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/include/uapi/asm/kvm.h | 3 +++
arch/s390/kvm/kvm-s390.c | 24
2 files changed, 27 insertions(+)
diff --git a/arch/s390/include/uapi/asm/kvm.h b/arch/s390/include/uapi
Gleb, Paolo,
here is a set of patches containing the floating interrupt controller
and the async page fault patches on top of them. (It took a bit
longer than expected)
Several changes since v4 of the async patches mostly to make life
migration possible:
- Please have a look at patch 5. This
-by: Dominik Dingel din...@linux.vnet.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/x86/kvm/mmu.c | 2 +-
include/linux/kvm_host.h | 2 +-
virt/kvm/Kconfig | 4
virt/kvm/async_pf.c | 22 +++---
4 files changed, 25 insertions(+), 5
-by: Jens Freimann jf...@linux.vnet.ibm.com
Reviewed-by: Cornelia Huck cornelia.h...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
Documentation/virtual/kvm/devices/s390_flic.txt | 36 +++
arch/s390/include/asm/kvm_host.h| 1 +
arch/s390/include/uapi/asm
From: Dominik Dingel din...@linux.vnet.ibm.com
kvm_clear_async_pf_completion get an additional flag to either cancel
outstanding
work or wait for oustanding work to be finished, x86 currentlx cancels all work.
Signed-off-by: Dominik Dingel din...@linux.vnet.ibm.com
Signed-off-by: Christian
Dingel din...@linux.vnet.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/include/asm/pgtable.h | 2 ++
arch/s390/include/asm/processor.h | 1 +
arch/s390/kvm/kvm-s390.c | 28 +++-
arch/s390/mm/fault.c | 26
On 05/10/13 01:54, Alexander Graf wrote:
On 06.09.2013, at 15:30, Christian Borntraeger wrote:
On 06/09/13 14:19, Jens Freimann wrote: This series adds a kvm_device that
acts as a irq controller for floating
interrupts. As a first step it implements functionality to retrieve and
inject
by this patch.
Signed-off-by: Thomas Huth th...@linux.vnet.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/include/asm/kvm_host.h | 1 -
arch/s390/kvm/intercept.c| 6 --
arch/s390/kvm/kvm-s390.c | 4
arch/s390/kvm/kvm-s390.h | 3 +--
4
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm/kvm-s390.c | 49
1 file changed, 25 insertions(+), 24 deletions(-)
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 69c7592..8eec7ab 100644
Huck cornelia.h...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm/kvm-s390.h | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/s390/kvm/kvm-s390.h b/arch/s390/kvm/kvm-s390.h
index a307a85..b44912a 100644
--- a/arch/s390/kvm/kvm
Paolo, Gleb,
here is a bunch of patch for kvm on s390.
The first 4 patches restructure the code to protect most of
vcpu_run with the kvm-srcu lock. The old code was structured
in way that adding the lock was more complicated than necessary,
therefore, the rework.
The last 4 patches deal with
...@de.ibm.com
Signed-off-by: Christian Borntraeger borntrae...@de.ibm.com
---
arch/s390/kvm/priv.c | 28
1 file changed, 28 insertions(+)
diff --git a/arch/s390/kvm/priv.c b/arch/s390/kvm/priv.c
index 59200ee..6f95994 100644
--- a/arch/s390/kvm/priv.c
+++ b/arch/s390/kvm
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