Diestelhorst stephan.diestelho...@amd.com
- enabling 32 bit guests
- splitted patches into two more chunks
Srivatsa Vaddagiri, Suzuki Poulose, Raghavendra K T (4):
Add debugfs support to print u32-arrays in debugfs
Add a hypercall to KVM hypervisor to support pv-ticketlocks
Added configuration
the presence of this feature to
guest via cpuid. Patch to qemu will be sent separately.
There is no Xen/KVM hypercall interface to await kick from.
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Signed-off-by: Suzuki Poulose suz...@in.ibm.com
Signed-off-by: Raghavendra K T raghavendra
.
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Signed-off-by: Suzuki Poulose suz...@in.ibm.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h
index 8b1d65d..7e419ad 100644
--- a/arch/x86
[ CCing Jeremy's new email ID ]
Hi Avi,
Thanks for review and inputs.
On 12/01/2011 04:41 PM, Avi Kivity wrote:
On 11/30/2011 10:59 AM, Raghavendra K T wrote:
The hypercall needs to be documented in
Documentation/virtual/kvm/hypercalls.txt.
Yes, Sure 'll document. hypercalls.txt is a new
On 12/02/2011 01:20 AM, Raghavendra K T wrote:
Have you tested it on AMD machines? There are some differences in the
hypercall infrastructure there.
Yes. 'll test on AMD machine and update on that.
I tested the code on 64 bit Dual-Core AMD Opteron machine, and it is
working.
- Raghu
On 12/06/2011 08:57 AM, Konrad Rzeszutek Wilk wrote:
+static inline void add_stats(enum kvm_contention_stat var, int val)
You probably want 'int val' to be 'u32 val' as that is the type
in contention_stats.
Yes. Thanks for pointing, as its cumulative. It is indeed u32 in #else
:).I 'll
On 12/07/2011 04:18 PM, Marcelo Tosatti wrote:
On Wed, Nov 30, 2011 at 02:29:59PM +0530, Raghavendra K T wrote:
+/*
+ * kvm_pv_kick_cpu_op: Kick a vcpu.
+ *
+ * @cpu - vcpu to be kicked.
+ */
+static void kvm_pv_kick_cpu_op(struct kvm *kvm, int cpu)
+{
+ struct kvm_vcpu *vcpu
On 12/07/2011 06:03 PM, Marcelo Tosatti wrote:
On Wed, Dec 07, 2011 at 05:24:59PM +0530, Raghavendra K T wrote:
On 12/07/2011 04:18 PM, Marcelo Tosatti wrote:
Yes you are right. It was potentially racy and it was harmful too!.
I had observed that it was stalling the CPU before I introduced
On 12/07/2011 08:22 PM, Avi Kivity wrote:
On 12/07/2011 03:39 PM, Marcelo Tosatti wrote:
Also I think we can keep the kicked flag in vcpu-requests, no need for
new storage.
Was going to suggest it but it violates the currently organized
processing of entries at the beginning of
On 12/02/2011 01:20 AM, Raghavendra K T wrote:
+/*
+ * kvm_pv_kick_cpu_op: Kick a vcpu.
+ *
+ * @cpu - vcpu to be kicked.
+ */
+static void kvm_pv_kick_cpu_op(struct kvm *kvm, int cpu)
+{
+ struct kvm_vcpu *vcpu = kvm_get_vcpu(kvm, cpu);
There is no guarantee that guest cpu numbers match host
On 12/08/2011 03:10 PM, Avi Kivity wrote:
On 12/07/2011 06:46 PM, Raghavendra K T wrote:
On 12/07/2011 08:22 PM, Avi Kivity wrote:
On 12/07/2011 03:39 PM, Marcelo Tosatti wrote:
Also I think we can keep the kicked flag in vcpu-requests, no need
for
new storage.
Was going to suggest
guests
- splitted patches into two more chunks
Srivatsa Vaddagiri, Suzuki Poulose, Raghavendra K T (5):
Add debugfs support to print u32-arrays in debugfs
Add a hypercall to KVM hypervisor to support pv-ticketlocks
Added configuration support to enable debug information for KVM Guests
pv
Add debugfs support to print u32-arrays in debugfs. Move the code from Xen to
debugfs
to make the code common for other users as well.
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Signed-off-by: Suzuki Poulose suz...@in.ibm.com
Signed-off-by: Raghavendra K T raghavendra
the presence of this feature to
guest via cpuid. Patch to qemu will be sent separately.
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Signed-off-by: Suzuki Poulose suz...@in.ibm.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
diff --git a/arch/x86/include/asm
Added configuration support to enable debug information
for KVM Guests in debugfs
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Signed-off-by: Suzuki Poulose suz...@in.ibm.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
diff --git a/arch/x86/Kconfig b
KVM_HC_KICK_CPU hypercall to wakeup waiting/halted vcpu.
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Signed-off-by: Suzuki Poulose suz...@in.ibm.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm
ioctl(KVM_CHECK_EXTENSION, KVM_CAP_PVLOCK_KICK)
A minimal Documentation and template is added for hypercalls.
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
---
diff --git a/Documentation/virtual/kvm/api.txt
b/Documentation
On 01/16/2012 08:42 AM, Alexander Graf wrote:
On 14.01.2012, at 19:26, Raghavendra K T wrote:
Extends Linux guest running on KVM hypervisor to support pv-ticketlocks.
During smp_boot_cpus paravirtualied KVM guest detects if the hypervisor has
required feature (KVM_FEATURE_PVLOCK_KICK
On 01/16/2012 08:54 AM, Alexander Graf wrote:
On 14.01.2012, at 19:25, Raghavendra K T wrote:
Add a hypercall to KVM hypervisor to support pv-ticketlocks
KVM_HC_KICK_CPU allows the calling vcpu to kick another vcpu out of halt state.
The presence of these hypercalls is indicated to guest
On 01/16/2012 08:53 AM, Alexander Graf wrote:
On 14.01.2012, at 19:27, Raghavendra K T wrote:
Add Documentation on CPUID, KVM_CAP_PVLOCK_KICK, and Hypercalls supported.
KVM_HC_KICK_CPU hypercall added to wakeup halted vcpu in
paravirtual spinlock enabled guest.
KVM_FEATURE_PVLOCK_KICK
On 01/16/2012 02:33 PM, Avi Kivity wrote:
+/*
+ * kvm_pv_kick_cpu_op: Kick a vcpu.
+ *
+ * @apicid - apicid of vcpu to be kicked.
+ */
+static void kvm_pv_kick_cpu_op(struct kvm *kvm, int apicid)
+{
+ struct kvm_vcpu *vcpu = NULL;
+ int i;
+
+ kvm_for_each_vcpu(i, vcpu, kvm) {
On 01/16/2012 09:27 AM, Alexander Graf wrote:
[...]
Result for PLE machine:
==
Machine : IBM xSeries with Intel(R) Xeon(R) X7560 2.27GHz CPU with 32/64 core,
with 8
online cores and 4*64GB RAM
Kernbench:
BASEBASE+patch
On 01/16/2012 02:35 PM, Avi Kivity wrote:
On 01/14/2012 08:26 PM, Raghavendra K T wrote:
Extends Linux guest running on KVM hypervisor to support pv-ticketlocks.
During smp_boot_cpus paravirtualied KVM guest detects if the hypervisor has
required feature (KVM_FEATURE_PVLOCK_KICK) to support
On 01/16/2012 07:53 PM, Alexander Graf wrote:
On 16.01.2012, at 15:20, Srivatsa Vaddagiri wrote:
* Alexander Grafag...@suse.de [2012-01-16 04:57:45]:
Speaking of which - have you benchmarked performance degradation of pv ticket
locks on bare metal?
You mean, run kernel on bare metal
On 01/16/2012 07:19 PM, Avi Kivity wrote:
On 01/16/2012 03:43 PM, Raghavendra K T wrote:
Dbench:
Throughput is in MB/sec
NRCLIENTS BASEBASE+patch
%improvement
mean (sd) mean (sd)
8 1.101190 (0.875082) 1.700395 (0.846809
On 01/17/2012 06:21 PM, Gleb Natapov wrote:
On Tue, Jan 17, 2012 at 05:56:50PM +0530, Srivatsa Vaddagiri wrote:
* Gleb Natapovg...@redhat.com [2012-01-17 11:14:13]:
The problem case I was thinking of was when guest VCPU would have issued
HLT with interrupts disabled. I guess one option is to
On 01/17/2012 12:12 AM, Alexander Graf wrote:
On 16.01.2012, at 19:38, Raghavendra K T wrote:
On 01/16/2012 07:53 PM, Alexander Graf wrote:
On 16.01.2012, at 15:20, Srivatsa Vaddagiri wrote:
* Alexander Grafag...@suse.de [2012-01-16 04:57:45]:
Speaking of which - have you benchmarked
On 01/17/2012 11:09 PM, Alexander Graf wrote:
On 17.01.2012, at 18:27, Raghavendra K T wrote:
On 01/17/2012 12:12 AM, Alexander Graf wrote:
On 16.01.2012, at 19:38, Raghavendra K T wrote:
On 01/16/2012 07:53 PM, Alexander Graf wrote:
On 16.01.2012, at 15:20, Srivatsa Vaddagiri wrote
On 01/17/2012 04:32 PM, Marcelo Tosatti wrote:
On Sat, Jan 14, 2012 at 11:56:46PM +0530, Raghavendra K T wrote:
Extends Linux guest running on KVM hypervisor to support pv-ticketlocks.
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index c7b05fc..4d7a950 100644
--- a/arch/x86/kvm/x86.c
On 01/18/2012 03:27 AM, Dave Hansen wrote:
On 01/17/2012 10:36 AM, Raghavendra K T wrote:
It was a quick test. two iteration of kernbench (=6runs) and had
ensured cache is cleared.
echo 1 /proc/sys/vm/drop_caches
ccache -C. Yes may be I can run test as you mentioned..
echo 3 /proc/sys/vm
On 01/17/2012 05:29 AM, Jeremy Fitzhardinge wrote:
On 01/16/2012 07:55 PM, Avi Kivity wrote:
On 01/16/2012 08:40 AM, Jeremy Fitzhardinge wrote:
That means we're spinning for n cycles, then notify the spinlock holder that
we'd like to get kicked and go sleeping. While I'm pretty sure that it
On 01/24/2012 07:38 PM, Avi Kivity wrote:
On 01/18/2012 11:52 PM, Jeremy Fitzhardinge wrote:
On 01/19/2012 12:54 AM, Srivatsa Vaddagiri wrote:
That logic relies on the kick being level triggered, so that kick
before block will cause the block to fall out immediately. If you're
using hlt as
On 01/18/2012 12:27 AM, Raghavendra K T wrote:
On 01/17/2012 04:32 PM, Marcelo Tosatti wrote:
On Sat, Jan 14, 2012 at 11:56:46PM +0530, Raghavendra K T wrote:
[...]
+ || (vcpu-requests ~(1ULKVM_REQ_PVLOCK_KICK))
+ || need_resched() || signal_pending(current)) {
vcpu-mode = OUTSIDE_GUEST_MODE
On 01/25/2012 10:05 PM, Konrad Rzeszutek Wilk wrote:
So it seems we have worst case overhead of around 8%. But we see
improvement of at-least 15% once when little more time is spent in
critical section.
Is this with collecting the histogram information about spinlocks? We found
that if you
jeremy.fitzhardi...@citrix.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm/paravirt.h | 32
arch/x86/include/asm/paravirt_types.h | 10 ++
arch/x86/include/asm/spinlock.h
From: Stefano Stabellini stefano.stabell...@eu.citrix.com
Signed-off-by: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/xen/smp.c |1 +
1 files changed
...@oracle.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/xen/smp.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index 501d4e0..e85d3ee 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -201,6 +201,7
jeremy.fitzhardi...@citrix.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
---
arch/x86/xen/spinlock.c | 344 +++
1 files changed, 77 insertions(+), 267 deletions(-)
diff --git
-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm/paravirt.h |2 +-
arch/x86/include/asm/paravirt_types.h |2 +-
arch/x86/kernel/paravirt-spinlocks.c |2 +-
arch/x86/xen/spinlock.c |3 ++-
4 files changed, 5 insertions(+), 4 deletions
From: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
The code size expands somewhat, and its probably better to just call
a function rather than inline it.
Signed-off-by: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
systems are probably
specially built for the hardware rather than a generic distro
kernel.
Signed-off-by: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm/spinlock.h | 10 +-
arch/x86/include
From: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
Changes since last posting: (Raghavendra K T)
[
- Rebased to linux-3.3-rc6.
- used function+enum in place of macro (better type checking)
- use cmpxchg while resetting zero status for possible race
[suggested by Dave Hansen
-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm/spinlock.h | 35 +--
1 files changed, 5 insertions(+), 30 deletions(-)
diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h
index 7e66b85..f6442f4 100644
--- a/arch/x86
Fitzhardinge jeremy.fitzhardi...@citrix.com
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Cc: Stephan Diestelhorst stephan.diestelho...@amd.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm
On 03/21/2012 08:03 PM, Attilio Rao wrote:
On 21/03/12 14:25, Stephan Diestelhorst wrote:
On Wednesday 21 March 2012, 13:49:28 Attilio Rao wrote:
On 21/03/12 13:22, Stephan Diestelhorst wrote:
On Wednesday 21 March 2012, 13:04:25 Attilio Rao wrote:
On 21/03/12 10:20, Raghavendra K T wrote
K T (6):
Add debugfs support to print u32-arrays in debugfs
Add a hypercall to KVM hypervisor to support pv-ticketlocks
Add unhalt msr to aid migration
Added configuration support to enable debug information for KVM Guests
pv-ticketlock support for linux guests running on KVM hypervisor
From: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Move the code from Xen to debugfs to make the code common
for other users as well.
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Signed-off-by: Suzuki Poulose suz...@in.ibm.com
Signed-off-by: Raghavendra K T raghavendra
Signed-off-by: Suzuki Poulose suz...@in.ibm.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h
index 734c376..9234f13 100644
--- a/arch/x86/include/asm/kvm_para.h
+++ b/arch/x86/include/asm/kvm_para.h
to wakeup waiting/halted vcpu.
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Signed-off-by: Suzuki Poulose suz...@in.ibm.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h
index 46f9751
On 03/26/2012 07:55 PM, Avi Kivity wrote:
On 03/21/2012 12:20 PM, Raghavendra K T wrote:
From: Jeremy Fitzhardingejeremy.fitzhardi...@citrix.com
[...]
This series provides a Xen implementation, but it should be
straightforward to add a KVM implementation as well.
Looks like a good
On 03/28/2012 09:39 PM, Alan Meadows wrote:
I am happy to see this issue receiving some attention and second the
wish to see these patches be considered for further review and inclusion
in an upcoming release.
Overcommit is not as common in enterprise and single-tenant virtualized
environments
On 03/23/2012 01:35 PM, Raghavendra K T wrote:
The 6-patch series to follow this email extends KVM-hypervisor and Linux guest
running on KVM-hypervisor to support pv-ticket spinlocks, based on Xen's
implementation.
One hypercall is introduced in KVM hypervisor,that allows a vcpu to kick
another
On 03/29/2012 11:33 PM, Raghavendra K T wrote:
On 03/29/2012 03:28 PM, Avi Kivity wrote:
On 03/28/2012 08:21 PM, Raghavendra K T wrote:
I really like below ideas. Thanks for that!.
- from the PLE handler, don't wake up a vcpu that is sleeping because it
is waiting for a kick
How about
On 03/31/2012 01:56 AM, H. Peter Anvin wrote:
What is the current status of this patchset? I haven't looked at it too
closely because I have been focused on 3.4 up until now...
Thanks Peter,
Currently targeting the patchset for next merge window. IMO These
patches are in good shape now. I'
On 04/01/2012 07:23 PM, Avi Kivity wrote:
On 04/01/2012 04:48 PM, Raghavendra K T wrote:
I have patch something like below in mind to try:
I'm interested in how PLE does vs. your patches, both with PLE enabled
and disabled.
Sure. will update with the experimental results
On 04/01/2012 07:23 PM, Avi Kivity wrote:
On 04/01/2012 04:48 PM, Raghavendra K T wrote:
I have patch something like below in mind to try:
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index d3b98b1..5127668 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1608,15
On 04/02/2012 03:21 PM, Raghavendra K T wrote:
On 04/01/2012 07:23 PM, Avi Kivity wrote:
On 04/01/2012 04:48 PM, Raghavendra K T wrote:
I have patch something like below in mind to try:
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 5127668..3fa912a 100644
--- a/virt/kvm
On 04/01/2012 07:23 PM, Avi Kivity wrote:
On 04/01/2012 04:48 PM, Raghavendra K T wrote:
I have patch something like below in mind to try:
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index d3b98b1..5127668 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1608,15
On 04/05/2012 02:31 PM, Avi Kivity wrote:
On 04/02/2012 12:51 PM, Raghavendra K T wrote:
On 04/01/2012 07:23 PM, Avi Kivity wrote:
On 04/01/2012 04:48 PM, Raghavendra K T wrote:
I have patch something like below in mind to try:
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index
Sorry for late reply,
was on vacation for a week (without IMAP access :( )
On 04/12/2012 05:36 AM, Marcelo Tosatti wrote:
On Fri, Mar 23, 2012 at 01:37:04PM +0530, Raghavendra K T wrote:
From: Srivatsa Vaddagiriva...@linux.vnet.ibm.com
[snip]
@@ -1567,6 +1568,9 @@ void kvm_vcpu_block(struct
On 04/12/2012 05:59 AM, Marcelo Tosatti wrote:
On Wed, Apr 11, 2012 at 09:06:29PM -0300, Marcelo Tosatti wrote:
On Fri, Mar 23, 2012 at 01:37:04PM +0530, Raghavendra K T wrote:
From: Srivatsa Vaddagiriva...@linux.vnet.ibm.com
[...]
barrier();
Is it always OK to erase
On 04/12/2012 05:45 AM, Marcelo Tosatti wrote:
On Fri, Mar 23, 2012 at 01:37:26PM +0530, Raghavendra K T wrote:
From: Raghavendra K Traghavendra...@linux.vnet.ibm.com
[...]
Unless there is a reason to use an MSR, should use a normal ioctl
such as KVM_{GET,SET}_MP_STATE.
I agree
xen/pvticketlock: allow interrupts to be enabled while blocking
Raghavendra K T (1):
x86/ticketlock: don't inline _spin_unlock when using paravirt
spinlocks
Andrew Jones (1):
split out rate limiting from jump_label.h
Stefano Stabellini (1):
xen: enable PV ticketlocks on HVM Xen
jeremy.fitzhardi...@citrix.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Tested-by: Attilio Rao attilio@citrix.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm/paravirt.h | 32
arch/x86/include/asm/paravirt_types.h
From: Raghavendra K T raghavendra...@linux.vnet.ibm.com
The code size expands somewhat, and its better to just call
a function rather than inline it.
Thanks Jeremy for original version of ARCH_NOINLINE_SPIN_UNLOCK config patch,
which is simplified.
Suggested-by: Linus Torvalds torva...@linux
attilio@citrix.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm/spinlock.h | 35 +--
1 files changed, 5 insertions(+), 30 deletions(-)
diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h
jeremy.fitzhardi...@citrix.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/xen/spinlock.c | 344 +++
1 files changed, 77 insertions(+), 267 deletions(-)
diff --git
-by: Attilio Rao attilio@citrix.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm/paravirt.h |2 +-
arch/x86/include/asm/paravirt_types.h |2 +-
arch/x86/kernel/paravirt-spinlocks.c |2 +-
arch/x86/xen/spinlock.c |3 ++-
4
jump_label.h into a new file, jump_label_ratelimit.h, to
resolve the issue.
Signed-off-by: Andrew Jones drjo...@redhat.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
include/linux/jump_label.h | 26 +-
include/linux/jump_label_ratelimit.h
Fitzhardinge jeremy.fitzhardi...@citrix.com
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Cc: Stephan Diestelhorst stephan.diestelho...@amd.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm
-by: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/xen/spinlock.c | 46 --
1 files changed, 40 insertions(+), 6
From: Stefano Stabellini stefano.stabell...@eu.citrix.com
Signed-off-by: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/xen/smp.c |1 +
1 files changed
Signed-off-by: Suzuki Poulose suz...@in.ibm.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
diff --git a/arch/ia64/include/asm/kvm_host.h b/arch/ia64/include/asm/kvm_host.h
index e35b3a8..3252339 100644
--- a/arch/ia64/include/asm/kvm_host.h
+++ b/arch/ia64/include/asm
From: Raghavendra K T raghavendra...@linux.vnet.ibm.com
KVM_HC_KICK_CPU hypercall added to wakeup halted vcpu in paravirtual spinlock
enabled guest.
KVM_FEATURE_PV_UNHALT enables guest to check whether pv spinlock can be enabled
in guest. support in host is queried via
ioctl
for linux guests running on KVM hypervisor
Raghavendra K T (2):
Fold pv_unhalt flag into GET_MP_STATE ioctl to aid migration
Add documentation on Hypercalls and features used for PV spinlock
Documentation/virtual/kvm/api.txt|7 +
Documentation/virtual/kvm/cpuid.txt |4
to wakeup waiting/halted vcpu.
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Signed-off-by: Suzuki Poulose suz...@in.ibm.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
diff --git a/arch/x86/include/asm/kvm_para.h b/arch/x86/include/asm/kvm_para.h
index 5b647ea
From: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Signed-off-by: Suzuki Poulose suz...@in.ibm.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 35eb2e4..a9ec0da
From: Raghavendra K T raghavendra...@linux.vnet.ibm.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 6faa550..7354c1b 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -5691,7 +5691,9 @@ int
On 04/24/2012 03:29 PM, Gleb Natapov wrote:
On Mon, Apr 23, 2012 at 03:29:47PM +0530, Raghavendra K T wrote:
From: Srivatsa Vaddagiriva...@linux.vnet.ibm.com
[...]
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 42b7393..edf56d4 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm
On 04/26/2012 09:27 PM, Rob Landley wrote:
On 04/23/2012 05:00 AM, Raghavendra K T wrote:
From: Raghavendra K Traghavendra...@linux.vnet.ibm.com
...
--- /dev/null
+++ b/Documentation/virtual/kvm/hypercalls.txt
@@ -0,0 +1,59 @@
+KVM Hypercalls Documentation
On 04/24/2012 03:29 PM, Gleb Natapov wrote:
On Mon, Apr 23, 2012 at 03:29:47PM +0530, Raghavendra K T wrote:
From: Srivatsa Vaddagiriva...@linux.vnet.ibm.com
KVM_HC_KICK_CPU allows the calling vcpu to kick another vcpu out of halt state.
The presence of these hypercalls is indicated to guest
Thanks Avi, for the review.
On 04/29/2012 06:55 PM, Avi Kivity wrote:
On 04/23/2012 12:59 PM, Raghavendra K T wrote:
From: Srivatsa Vaddagiriva...@linux.vnet.ibm.com
KVM_HC_KICK_CPU allows the calling vcpu to kick another vcpu out of halt state.
The presence of these hypercalls is indicated
On 04/29/2012 06:57 PM, Avi Kivity wrote:
On 04/23/2012 01:00 PM, Raghavendra K T wrote:
From: Raghavendra K Traghavendra...@linux.vnet.ibm.com
Signed-off-by: Raghavendra K Traghavendra...@linux.vnet.ibm.com
---
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 6faa550..7354c1b 100644
On 05/01/2012 06:20 PM, Ian Campbell wrote:
On Thu, 2012-04-19 at 21:12 +0100, Raghavendra K T wrote:
From: Jeremy Fitzhardingejeremy.fitzhardi...@citrix.com
This series replaces the existing paravirtualized spinlock mechanism
with a paravirtualized ticketlock mechanism. (targeted for 3.5
On 04/30/2012 01:14 PM, Raghavendra K T wrote:
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4044ce0..7fc9be6 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2147,6 +2147,7 @@ int kvm_dev_ioctl_check_extension(long ext)
case KVM_CAP_ASYNC_PF:
case KVM_CAP_GET_TSC_KHZ
attilio@citrix.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm/spinlock.h | 35 +--
1 files changed, 5 insertions(+), 30 deletions(-)
diff --git a/arch/x86/include/asm/spinlock.h b/arch/x86/include/asm/spinlock.h
jeremy.fitzhardi...@citrix.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Tested-by: Attilio Rao attilio@citrix.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm/paravirt.h | 32
arch/x86/include/asm/paravirt_types.h
-ticketlocks
Added configuration support to enable debug information for KVM Guests
Paravirtual ticketlock support for linux guests running on KVM hypervisor
Raghavendra K T (3):
x86/ticketlock: Don't inline _spin_unlock when using paravirt
spinlocks
Fold pv_unhalt flag into GET_MP_STATE
...@oracle.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/xen/smp.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index 0503c0c..7dc400a 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -222,6 +222,7
From: Raghavendra K T raghavendra...@linux.vnet.ibm.com
The code size expands somewhat, and its better to just call
a function rather than inline it.
Thanks Jeremy for original version of ARCH_NOINLINE_SPIN_UNLOCK config patch,
which is simplified.
Suggested-by: Linus Torvalds torva...@linux
jeremy.fitzhardi...@citrix.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/xen/spinlock.c | 348 +++
1 files changed, 78 insertions(+), 270 deletions(-)
diff --git
-by: Attilio Rao attilio@citrix.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm/paravirt.h |2 +-
arch/x86/include/asm/paravirt_types.h |2 +-
arch/x86/kernel/paravirt-spinlocks.c |2 +-
arch/x86/xen/spinlock.c |3 ++-
4
From: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
Signed-off-by: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/xen/spinlock.c | 14
systems are probably
specially built for the hardware rather than a generic distro
kernel.
Signed-off-by: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
Tested-by: Attilio Rao attilio@citrix.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm
jump_label.h into a new file, jump_label_ratelimit.h, to
resolve the issue.
Signed-off-by: Andrew Jones drjo...@redhat.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
include/linux/jump_label.h | 26 +-
include/linux/jump_label_ratelimit.h
Fitzhardinge jeremy.fitzhardi...@citrix.com
Signed-off-by: Srivatsa Vaddagiri va...@linux.vnet.ibm.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Cc: Stephan Diestelhorst stephan.diestelho...@amd.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm
-by: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/xen/spinlock.c | 46 --
1 files changed, 40 insertions(+), 6
From: Stefano Stabellini stefano.stabell...@eu.citrix.com
Signed-off-by: Jeremy Fitzhardinge jeremy.fitzhardi...@citrix.com
Reviewed-by: Konrad Rzeszutek Wilk konrad.w...@oracle.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/xen/smp.c |1 +
1 files changed
-by: Suzuki Poulose suz...@in.ibm.com
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/include/asm/kvm_host.h |4
arch/x86/include/asm/kvm_para.h |2 ++
arch/x86/kvm/cpuid.c|3 ++-
arch/x86/kvm/x86.c | 37
From: Raghavendra K T raghavendra...@linux.vnet.ibm.com
During migration, any vcpu that got kicked but did not become runnable
(still in halted state) should be runnable after migration.
Signed-off-by: Raghavendra K T raghavendra...@linux.vnet.ibm.com
---
arch/x86/kvm/x86.c |7 ++-
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