s.
Signed-off-by: Dominik Dingel
Signed-off-by: Christian Borntraeger
---
arch/s390/include/asm/kvm_host.h | 8
include/linux/kvm_host.h | 8
2 files changed, 16 insertions(+)
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index 3238d4
From: Thomas Huth
sparse complained about the missing UL postfix for long constants.
Signed-off-by: Thomas Huth
Acked-by: Cornelia Huck
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/priv.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/s390/kvm
or virtual facilites has been added
as well.
Signed-off-by: Michael Mueller
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/kvm-s390.c | 23 +++
arch/s390/kvm/kvm-s390.h | 3 +++
arch/s390/kvm/priv.c | 11 ---
3 files changed, 22 insertions(+), 15 deletions(-)
di
From: Thomas Huth
Introduced a helper function for setting the CC in the
guest PSW to improve the readability of the code.
Signed-off-by: Thomas Huth
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/kvm-s390.h | 7 +++
arch/s390/kvm/priv.c | 15 ++-
2 files changed
te to STOPPED while
holding the local irq lock.
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Reviewed-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/intercept.c | 31 ---
arch/s390/kvm/kvm-s390.c | 8
2
Paolo,
here is a preview of a rework of CPU state on s390x. Since we extend
MP_STATE I wanted to send an RFC upfront. I will wait for some feedback
and send a proper pull request in the next week:
-
This series enables the "KVM_SET_MP_STATE" ioctl on s390 to make the cpu
state settable by u
().
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Acked-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/kvm-s390.c | 7 +--
arch/s390/kvm/kvm-s390.h | 4 ++--
2 files changed, 3 insertions(+), 8 deletions(-)
diff --git a/arch/s390/kvm/kvm-s390.c b
This is the qemu part of kernel series "Let user space control the
cpu states"
Christian Borntraeger (1):
update linux headers with with cpustate changes
David Hildenbrand (4):
s390x/kvm: introduce proper states for s390 cpus
s390x/kvm: proper use of the cpu states OPERATING a
VCPU state change
(to avoid race conditions).
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Reviewed-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/sigp.c | 7 ++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/s390/kvm/sigp.c
s390.
Fix a spelling error (KVM_SET_MP_STATE vs. KVM_SET_MPSTATE) on the way.
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Acked-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
Documentation/virtual/kvm/api.txt | 21 -
include/uapi/linux
Borntraeger
Signed-off-by: Christian Borntraeger
[folded Jason's patch into David's patch to avoid add/remove same lines]
---
hw/s390x/s390-virtio.c | 32
target-s390x/cpu.c | 43 +++
target-s390x/cpu.
d-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Reviewed-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
target-s390x/cpu.c | 6 ++
target-s390x/kvm.c | 5 +
2 files changed, 11 insertions(+)
diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c
index c5ab98f..1d32f
oper cpu state synchronization with the kvm part, we need to track the real
logical state of a cpu.
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Reviewed-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
hw/s390x/ipl.c
by: Thomas Huth
Reviewed-by: Cornelia Huck
Signed-off-by: Christian Borntraeger
---
target-s390x/cpu.c | 3 +++
target-s390x/cpu.h | 5 +
target-s390x/kvm.c | 33 +
trace-events | 1 +
4 files changed, 42 insertions(+)
diff --git a/target-s390x/cpu.c
KVM_SET_MP_STATE, we can
disable
manual changing of the VCPU state and trust user space to do the right thing.
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Acked-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
Documentation/virtual/kvm/api.txt | 10 --
arch/s390
Will do a proper headers sync when ready
Signed-off-by: Christian Borntraeger
---
linux-headers/linux/kvm.h | 7 ++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index f5d2c38..9b584da 100644
--- a/linux-headers/linux
Paolo,
The following changes since commit 9f6226a762c7ae02f6a23a3d4fc552dafa57ea23:
arch: x86: kvm: x86.c: Cleaning up variable is set more than once (2014-06-30
16:52:04 +0200)
are available in the git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux.git
tags/k
VCPU state change
(to avoid race conditions).
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Reviewed-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/sigp.c | 7 ++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/arch/s390/kvm/sigp.c
s390.
Fix a spelling error (KVM_SET_MP_STATE vs. KVM_SET_MPSTATE) on the way.
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Acked-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
Documentation/virtual/kvm/api.txt | 21 -
include/uapi/linux
().
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Acked-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/kvm-s390.c | 7 +--
arch/s390/kvm/kvm-s390.h | 4 ++--
2 files changed, 3 insertions(+), 8 deletions(-)
diff --git a/arch/s390/kvm/kvm-s390.c b
te to STOPPED while
holding the local irq lock.
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Reviewed-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/intercept.c | 31 ---
arch/s390/kvm/kvm-s390.c | 8
2
KVM_SET_MP_STATE, we can
disable
manual changing of the VCPU state and trust user space to do the right thing.
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Acked-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
Documentation/virtual/kvm/api.txt | 10 --
arch/s390
On 18/07/14 16:49, Paolo Bonzini wrote:
> Il 15/07/2014 15:27, Christian Borntraeger ha scritto:
>> Paolo,
>>
>> The following changes since commit 9f6226a762c7ae02f6a23a3d4fc552dafa57ea23:
>>
>> arch: x86: kvm: x86.c: Cleaning up variable is set more than on
IPTE intercept can happen, let's decode that.
Signed-off-by: Christian Borntraeger
Acked-by: Cornelia Huck
---
arch/s390/include/uapi/asm/sie.h | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/s390/include/uapi/asm/sie.h b/arch/s390/include/uapi/asm/sie.h
index 5d9cc19..d4096fd 1
From: Cornelia Huck
Let's document that this is a capability that may be enabled per-vm.
Signed-off-by: Cornelia Huck
Reviewed-by: David Hildenbrand
Signed-off-by: Christian Borntraeger
---
Documentation/virtual/kvm/api.txt | 9 +
1 file changed, 9 insertions(+)
diff --
From: Cornelia Huck
Capabilities can be enabled on a vcpu or (since recently) on a vm. Document
this and note for the existing capabilites whether they are per-vcpu or
per-vm.
Signed-off-by: Cornelia Huck
Reviewed-by: David Hildenbrand
Signed-off-by: Christian Borntraeger
---
Documentation
, so no checks are lost.
The flag "timer_due" can be removed - kvm_cpu_has_pending_timer() tests whether
the timer is pending, thus the vcpu is correctly woken up.
Signed-off-by: David Hildenbrand
Acked-by: Christian Borntraeger
Acked-by: Cornelia Huck
Signed-off-by: Christian B
From: David Hildenbrand
We can get rid of the tasklet used for waking up a VCPU in the hrtimer
code but wakeup the VCPU directly.
Signed-off-by: David Hildenbrand
Reviewed-by: Christian Borntraeger
Acked-by: Cornelia Huck
Signed-off-by: Christian Borntraeger
---
arch/s390/include/asm
From: David Hildenbrand
local_int.lock is not used in a bottom-half handler anymore, therefore we can
turn it into an ordinary spin_lock at all occurrences.
Signed-off-by: David Hildenbrand
Reviewed-by: Christian Borntraeger
Acked-by: Cornelia Huck
Signed-off-by: Christian Borntraeger
From: Cornelia Huck
We should advertise all capabilities, including those that can
be enabled.
Signed-off-by: Cornelia Huck
Acked-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/kvm-s390.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/s390/kvm/kvm
From: David Hildenbrand
The start_stop_lock is no longer acquired when in atomic context, therefore we
can convert it into an ordinary spin_lock.
Signed-off-by: David Hildenbrand
Reviewed-by: Christian Borntraeger
Acked-by: Cornelia Huck
Signed-off-by: Christian Borntraeger
---
arch/s390
Christian Borntraeger (1):
KVM: s390: add ipte to trace event decoding
Cornelia Huck (3):
KVM: document target of capability enablement
KVM: s390: document KVM_CAP_S390_IRQCHIP
KVM: s390: advertise KVM_CAP_S390_IRQCHIP
David Hildenbrand (5):
KVM: s390
chedules after schedule()
in some scenarios.
The wakeup code doesn't require the local_int.lock to be held.
Signed-off-by: David Hildenbrand
Reviewed-by: Christian Borntraeger
Acked-by: Cornelia Huck
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/interrupt.c | 24 +++--
On 22/07/14 10:32, Paolo Bonzini wrote:
> Il 21/07/2014 21:14, Christian Borntraeger ha scritto:
>> From: Cornelia Huck
>>
>> We should advertise all capabilities, including those that can
>> be enabled.
>>
>> Signed-off-by: Cornelia Huck
>> Acke
On 28/07/14 16:22, Alexander Graf wrote:
>
> On 28.07.2014, at 16:16, David Hildenbrand wrote:
>
>>>
>>> On 10.07.14 15:10, Christian Borntraeger wrote:
>>>> From: David Hildenbrand
>>>>
>>>> If a cpu is stopped, it must never be a
ildenbrand
Reviewed-by: Christian Borntraeger
Acked-by: Cornelia Huck
Signed-off-by: Christian Borntraeger
[some additional patch description]
---
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 1be3d8d..9252
commit 7dfc63cf977447e09b1072911c22564f900fc578
(KVM: s390: allow only one SIGP STOP (AND STORE STATUS) at a time)
introduced a memory leak if a sigp stop is already pending. Free
the allocated inti structure.
Signed-off-by: Christian Borntraeger
Reviewed-by: David Hildenbrand
---
arch/s390
Linux as a guest.
So no need for cc stable
Christian Borntraeger (1):
KVM: s390: Fix memory leak on busy SIGP stop
David Hildenbrand (1):
KVM: s390: rework broken SIGP STOP interrupt handling
arch/s390/kvm/interrupt.c | 3
For lots of exits the min time (and sometimes max) is 0 or 1. Lets
increase the accurancy similar to what the average field alread does.
Cc: Paolo Bonzini
Cc: Jiri Olsa
Cc: David Ahern
Cc: Arnaldo Carvalho de Melo
Signed-off-by: Christian Borntraeger
---
tools/perf/builtin-kvm.c | 8
On my s390 kvm system most of the kvm exits are in the range
of 0 or 1 microseconds. Can we increase the accuracy by 2
additional digits?
Opinions?
Christian Borntraeger (1):
KVM: perf/stat: Properly show submicrosecond times
tools/perf/builtin-kvm.c | 8
1 file changed, 4
of yielding, so
let's update the pid only in the KVM_RUN ioctl.
In addition, don't do a synchronize_rcu on startup (pid == 0).
This speeds up guest boot time on s390 noticably for some configs, e.g.
HZ=100, no full state tracking, 64 guest cpus 32 host cpus.
Signed-off-by: Christian B
On 07/08/14 10:21, Raghavendra K T wrote:
> On 08/05/2014 08:14 PM, Christian Borntraeger wrote:
>> We currently track the pid of the task that runs the VCPU in
>> vcpu_load. Since we call vcpu_load for all kind of ioctls on a
>> CPU, this causes hickups due to synchron
On 07/08/14 15:40, Paolo Bonzini wrote:
> Il 07/08/2014 11:59, Christian Borntraeger ha scritto:
>> Paolo,
>>
>> are you willing to apply to kvm/queue?
>
> I asked a question, but anyway... not until the end of the merge window
> and my small vacation. :)
>
>
On 07/08/14 15:39, Paolo Bonzini wrote:
> Il 05/08/2014 16:44, Christian Borntraeger ha scritto:
>> We currently track the pid of the task that runs the VCPU in
>> vcpu_load. Since we call vcpu_load for all kind of ioctls on a
>> CPU, this causes hickups due to synchron
On 19/08/14 11:27, Paolo Bonzini wrote:
> Il 19/08/2014 10:38, Christian Borntraeger ha scritto:
>>>> The patch may be okay, but I'm worried that it might be hiding a bug in
>>>> QEMU.
>> On s390 we call "KVM_S390_INITIAL_RESET" from several reset f
On 19/08/14 11:53, Paolo Bonzini wrote:
> Il 19/08/2014 11:47, Christian Borntraeger ha scritto:
>> On 19/08/14 11:27, Paolo Bonzini wrote:
>>> Il 19/08/2014 10:38, Christian Borntraeger ha scritto:
>>>>>> The patch may be okay, but I'm worried that it migh
On 19/08/14 12:03, Paolo Bonzini wrote:
> Il 19/08/2014 11:59, Christian Borntraeger ha scritto:
>> Its only for the interrupts that are cpu local (like pending IPIs).
>> In addition, we would do that only for the reset case (with an
>> interface that can be used for
On 19/08/14 12:31, Paolo Bonzini wrote:
> Il 19/08/2014 12:09, Christian Borntraeger ha scritto:
>>> I'm not sure, this does seem like a workaround for another
>>> limitation after all... Gleb?
>>
>> Yes. We want to get rid of KVM_S390_INITIAL_RESET in QEMU.
On 18/08/14 07:02, Wanpeng Li wrote:
> Hi Christian,
> On Tue, Aug 05, 2014 at 04:44:14PM +0200, Christian Borntraeger wrote:
>> We currently track the pid of the task that runs the VCPU in
>> vcpu_load. Since we call vcpu_load for all kind of ioctls on a
>> CPU, th
On 19/08/14 14:14, David Hildenbrand wrote:
>> Il 19/08/2014 13:28, David Hildenbrand ha scritto:
>>> Looking at the code, kvm_cpu_synchronize_state() seems to do these ioctls in
>>> the vcpu thread (e.g. comming from cpu_synchronize_all_states()), any
>>> reasons
>>> why kvm_cpu_synchronize_post_
On 19/08/14 16:23, David Hildenbrand wrote:
>> On 19/08/14 14:14, David Hildenbrand wrote:
Il 19/08/2014 13:28, David Hildenbrand ha scritto:
> Looking at the code, kvm_cpu_synchronize_state() seems to do these ioctls
> in
> the vcpu thread (e.g. comming from cpu_synchronize_all_s
We dont have to wait for a grace period if there is no oldpid that
we are going to free. putpid also checks for NULL, so this patch
only fences synchronize_rcu.
Signed-off-by: Christian Borntraeger
---
virt/kvm/kvm_main.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a
On 20/08/14 01:22, Wanpeng Li wrote:
> On Tue, Aug 19, 2014 at 04:04:03PM +0200, Christian Borntraeger wrote:
>> On 18/08/14 07:02, Wanpeng Li wrote:
>>> Hi Christian,
>>> On Tue, Aug 05, 2014 at 04:44:14PM +0200, Christian Borntraeger wrote:
>>>> We curren
On 19/08/14 22:35, Radim Krčmář wrote:
> --- a/virt/kvm/kvm_main.c
> +++ b/virt/kvm/kvm_main.c
> @@ -3123,6 +3123,8 @@ static void kvm_sched_in(struct preempt_notifier *pn,
> int cpu)
> if (vcpu->preempted)
> vcpu->preempted = false;
>
> + kvm_arch_sched_in(vcpu, cpu);
>
On 10/08/14 10:30, Razya Ladelsky wrote:
> From: Razya Ladelsky
> Date: Thu, 31 Jul 2014 09:47:20 +0300
> Subject: [PATCH] vhost: Add polling mode
>
> When vhost is waiting for buffers from the guest driver (e.g., more packets to
> send in vhost-net's transmit queue), it normally goes to sleep an
On 19/08/14 16:45, Christian Borntraeger wrote:
> We dont have to wait for a grace period if there is no oldpid that
> we are going to free. putpid also checks for NULL, so this patch
> only fences synchronize_rcu.
>
> Signed-off-by: Christian Borntraeger
> ---
> vi
On 25/08/14 10:24, Christian Borntraeger wrote:
> On 19/08/14 16:45, Christian Borntraeger wrote:
>> We dont have to wait for a grace period if there is no oldpid that
>> we are going to free. putpid also checks for NULL, so this patch
>> only fences synchronize_rcu.
>>
The PFMF instruction handler blindly wrote the storage key even if
the page was mapped R/O in the host. Lets try a COW before continuing
and bail out in case of errors.
Signed-off-by: Christian Borntraeger
Reviewed-by: Dominik Dingel
Cc: sta...@vger.kernel.org
---
arch/s390/mm/pgtable.c | 10
malicious user to change the storage key of read-only pages
Christian Borntraeger (2):
KVM: s390: Fix user triggerable bug in dead code
KVM: s390/mm: try a cow on read only pages for key ops
arch/s390/kvm/kvm-s390.c | 13
structure. Unfortunately, this
allows userspace to trigger a kernel BUG. Let's just remove
this switch statement.
Signed-off-by: Christian Borntraeger
Reviewed-by: Cornelia Huck
Reviewed-by: David Hildenbrand
Cc: sta...@vger.kernel.org
---
arch/s390/kvm/kvm-s390.c | 13 -
1 file ch
On 25/08/14 15:42, Paolo Bonzini wrote:
> Il 25/08/2014 15:10, Christian Borntraeger ha scritto:
>> Paolo,
>>
>> the following changes since commit 7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9:
>>
>> Linux 3.17-rc1 (2014-08-16 10:40:26 -0600)
>>
>> are av
From: David Hildenbrand
We should make sure that all kvm_dirty_regs bits are cleared before dropping
to user space. Until now, some would remain pending.
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/kvm-s390.c | 6
pport gmap page tables
with less than 5 levels.
----
Christian Borntraeger (1):
KVM: s390: no special machine check delivery
David Hildenbrand (4):
KVM: clarify the idea of kvm_dirty_regs
KVM: s390: clear kvm_dirty
From: Jens Freimann
Let's make this a reusable function.
Signed-off-by: Jens Freimann
Acked-by: Cornelia Huck
Acked-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/interrupt.c | 41 +
1 file changed, 21 inser
From: Martin Schwidefsky
Revert git commit 1b7fd6952063 ("remove unecessary parameter from
pgste_ipte_notify")
Signed-off-by: Martin Schwidefsky
Signed-off-by: Christian Borntraeger
---
arch/s390/include/asm/pgtable.h | 17 +
1 file changed, 9 insertions(+), 8
From: Martin Schwidefsky
The radix tree rework removed all code that uses the gmap_rmap
and gmap_pgtable data structures. Remove these outdated definitions.
Signed-off-by: Martin Schwidefsky
Signed-off-by: Christian Borntraeger
---
arch/s390/include/asm/pgtable.h | 23
ned-off-by: Christian Borntraeger
---
arch/s390/kvm/interrupt.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index e2f6240..ba89bbb 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -991,7 +991,6 @@ int kvm_s390_i
helper routines.
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Reviewed-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
arch/s390/include/uapi/asm/kvm.h | 10 +++
arch/s390/kvm/kvm-s390.c | 60 ++--
2 files changed
invalidation in
the gmap shadow page table. As the radix tree can only store one
pointer, each host segment may only be mapped to exactly one
guest location.
Signed-off-by: Martin Schwidefsky
Signed-off-by: Christian Borntraeger
---
arch/s390/include/asm/pgalloc.h | 8 +-
arch/s390/include/asm
The load PSW handler does not have to inject pending machine checks.
This can wait until the CPU runs the generic interrupt injection code.
Signed-off-by: Christian Borntraeger
Reviewed-by: Cornelia Huck
---
arch/s390/kvm/interrupt.c | 56 ---
arch
From: David Hildenbrand
This patch clarifies that kvm_dirty_regs are just a hint to the kernel and
that the kernel might just ignore some flags and sync the values (like done for
acrs and gprs now).
Signed-off-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Signed-off-by: Christian
Reviewed-by: Cornelia Huck
Acked-by: Christian Borntraeger
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/kvm-s390.c | 10 --
arch/s390/kvm/kvm-s390.h | 2 +-
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index
eturn code of guest memory access routines used in interrupt
delivery all the way back to the KVM_RUN ioctl.
Signed-off-by: Jens Freimann
Reviewed-by: David Hildenbrand
Reviewed-by: Cornelia Huck
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/interrupt.c
From: Martin Schwidefsky
Add an addressing limit to the gmap address spaces and only allocate
the page table levels that are needed for the given limit. The limit
is fixed and can not be changed after a gmap has been created.
Signed-off-by: Martin Schwidefsky
Signed-off-by: Christian
From: Jens Freimann
Get rid of open coded values for pfault init.
Signed-off-by: Jens Freimann
Acked-by: Cornelia Huck
Signed-off-by: Christian Borntraeger
---
arch/s390/kvm/interrupt.c | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/s390/kvm/interrupt.c b
.
Signed-off-by: Martin Schwidefsky
Reviewed-by: Cornelia Huck
Signed-off-by: Christian Borntraeger
---
arch/s390/include/asm/pgtable.h | 14 ++---
arch/s390/kvm/diag.c| 8 +--
arch/s390/kvm/interrupt.c | 2 +-
arch/s390/kvm/kvm-s390.c| 4 +-
arch/s390/kvm/priv.c
From: Martin Schwidefsky
Revert git commit c3a23b9874c1 ("remove unnecessary parameter from
gmap_do_ipte_notify").
Signed-off-by: Martin Schwidefsky
Signed-off-by: Christian Borntraeger
---
arch/s390/include/asm/pgtable.h | 4 ++--
arch/s390/mm/pgtable.c | 3 ++-
2 files
On 26/08/14 13:40, Paolo Bonzini wrote:
> Il 26/08/2014 10:28, Christian Borntraeger ha scritto:
>> 2. We use KVM_REQ_TLB_FLUSH instead of open coding tlb flushes
>
> Why is this needed? It seems slower than what you are replacing.
>
> Supporting KVM_REQ_TLB_FLUSH is usef
On 27/08/14 05:06, Ben Hutchings wrote:
> On Mon, 2014-08-25 at 15:10 +0200, Christian Borntraeger wrote:
>> The PFMF instruction handler blindly wrote the storage key even if
>> the page was mapped R/O in the host. Lets try a COW before continuing
>> and bail out in case of
commit ab3f285f227f ("KVM: s390/mm: try a cow on read only pages for
key ops")' misaligned a code block. Let's fixup the indentation.
Reported-by: Ben Hutchings
Signed-off-by: Christian Borntraeger
---
arch/s390/mm/pgtable.c | 12 ++--
1 file changed, 6 insert
On 29/08/14 14:01, Paolo Bonzini wrote:
> Opaque KVM structs are useful for prototypes in asm/kvm_host.h, to avoid
> "'struct foo' declared inside parameter list" warnings (and consequent
> breakage due to conflicting types).
>
> Move them from individual files to a generic place in linux/kvm_type
On 01/09/14 14:52, Zhang Haoyu wrote:
Hi, all
I start a VM with virtio-serial (default ports number: 31), and found that
virtio-blk performance degradation happened, about 25%, this problem can
be reproduced 100%.
without virtio-serial:
4k-read-random 1186 IOPS
On 01/09/14 15:12, Paolo Bonzini wrote:
> Il 01/09/2014 15:09, Christian Borntraeger ha scritto:
>> This is just wild guessing:
>> If virtio-blk and virtio-serial share an IRQ, the guest operating system has
>> to check each virtqueue for activity. Maybe there is some ineffi
On 01/09/14 15:29, Paolo Bonzini wrote:
> Il 01/09/2014 15:22, Christian Borntraeger ha scritto:
>>>> If virtio-blk and virtio-serial share an IRQ, the guest operating system
>>>> has to check each virtqueue for activity. Maybe there is some inefficiency
>>>&g
On 01/09/14 16:03, Christian Borntraeger wrote:
> On 01/09/14 15:29, Paolo Bonzini wrote:
>> Il 01/09/2014 15:22, Christian Borntraeger ha scritto:
>>>>> If virtio-blk and virtio-serial share an IRQ, the guest operating system
>>>>> has to check each virt
Am 14.08.2015 um 12:08 schrieb Radim Krčmář:
> v3:
> * acked by Christian [1/5]
> * use ioctl argument directly (unsigned long as flags) [4/5]
> * precisely #ifdef arch-specific ioctls [5/5]
> v2:
> * move request_exits debug counter patch right after introduction of
>KVM_REQ_EXIT [3/5]
>
Am 04.09.2015 um 11:35 schrieb Thomas Huth:
>
> Hi all,
>
> now that we get memory hotplugging for the spapr machine on qemu-ppc,
> too, it seems like we easily can hit the amount of KVM-internal memory
> slots now ("#define KVM_USER_MEM_SLOTS 32" in
> arch/powerpc/include/asm/kvm_host.h). For e
Am 04.09.2015 um 12:04 schrieb Alexander Graf:
>
>
> On 04.09.15 11:59, Christian Borntraeger wrote:
>> Am 04.09.2015 um 11:35 schrieb Thomas Huth:
>>>
>>> Hi all,
>>>
>>> now that we get memory hotplugging for the spapr machine on qemu-ppc,
Am 08.09.2015 um 08:05 schrieb Thomas Huth:
> On 07/09/15 16:31, Igor Mammedov wrote:
>> On Fri, 4 Sep 2015 12:04:41 +0200
>> Alexander Graf wrote:
>>
>>>
>>>
>>> On 04.09.15 11:59, Christian Borntraeger wrote:
>>>> Am 04.09.2015 um 11:
Am 03.09.2015 um 16:07 schrieb Wanpeng Li:
> v6 -> v7:
> * explicit signal (set a bool)
> * fix the tracepoint
>
> v5 -> v6:
> * fix wait_ns and poll_ns
>
> v4 -> v5:
> * set base case 10us and max poll time 500us
> * handle short/long halt, idea from David, many thanks David
>
> v3 -> v
Am 10.09.2015 um 03:55 schrieb Wanpeng Li:
> On 9/9/15 9:39 PM, Christian Borntraeger wrote:
>> Am 03.09.2015 um 16:07 schrieb Wanpeng Li:
>>> v6 -> v7:
>>> * explicit signal (set a bool)
>>> * fix the tracepoint
>>>
>>> v5 -> v6:
&
Am 10.09.2015 um 06:02 schrieb Stephen Rothwell:
> Hi all,
>
> Please do not add material for v4.4 until after v4.3-rc1 is out.
>
[...]
> The kvm tree still had its build failure for which I reverted a commit.
[..]
> Merging kvm/linux-next (2cbd78244fb2 KVM: trace kvm_halt_poll_ns grow/shrink)
>
This patch fix it by reset vcpu->halt_poll_ns in order to stop polling
> when polling is disabled.
>
> Reported-by: Christian Borntraeger
> Signed-off-by: Wanpeng Li
> ---
> virt/kvm/kvm_main.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a
Tejun,
commit d59cfc09c32a2ae31f1c3bc2983a0cd79afb3f14 (sched, cgroup: replace
signal_struct->group_rwsem with a global percpu_rwsem) causes some noticably
hickups when starting several kvm guests (which libvirt will move into cgroups
- each vcpu thread and each i/o thread)
When you now start lo
Am 15.09.2015 um 15:05 schrieb Peter Zijlstra:
> On Tue, Sep 15, 2015 at 02:05:14PM +0200, Christian Borntraeger wrote:
>> Tejun,
>>
>>
>> commit d59cfc09c32a2ae31f1c3bc2983a0cd79afb3f14 (sched, cgroup: replace
>> signal_struct->group_rwsem with a global
Am 15.09.2015 um 18:42 schrieb Paolo Bonzini:
>
>
> On 15/09/2015 15:36, Christian Borntraeger wrote:
>> I am wondering why the old code behaved in such fatal ways. Is there
>> some interaction between waiting for a reschedule in the
>> synchronize_sched writer
Am 16.09.2015 um 03:24 schrieb Tejun Heo:
> Hello, Paul.
>
> On Tue, Sep 15, 2015 at 04:38:18PM -0700, Paul E. McKenney wrote:
>> Well, the decision as to what is too big for -stable is owned by the
>> -stable maintainers, not by me.
>
> Is it tho? Usually the subsystem maintainer knows the best
Am 16.09.2015 um 10:32 schrieb Paolo Bonzini:
>
>
> On 15/09/2015 19:38, Paul E. McKenney wrote:
>> Excellent points!
>>
>> Other options in such situations include the following:
>>
>> oRework so that the code uses call_rcu*() instead of *_expedited().
>>
>> oMaintain a per-task or per-C
empted polling compared to the successful polls.
>
> Cc: Christian Borntraeger Cc: David Matlack
> Signed-off-by: Paolo Bonzini
Acked-by: Christian Borntraeger
yes, this will help to detect some bad cases, but not all.
PS:
upstream maintenance keeps me really busy at the moment
Am 16.09.2015 um 09:44 schrieb Christian Borntraeger:
> Am 16.09.2015 um 03:24 schrieb Tejun Heo:
>> Hello, Paul.
>>
>> On Tue, Sep 15, 2015 at 04:38:18PM -0700, Paul E. McKenney wrote:
>>> Well, the decision as to what is too big for -stable is owned by the
>
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