On 01/05/2016 11:18 AM, Yang Zhang wrote:
> On 2016/1/4 14:22, Jason Wang wrote:
>>
>>
>> On 01/04/2016 09:39 AM, Yang Zhang wrote:
>>> On 2015/12/31 15:13, Jason Wang wrote:
>>>> This patch tries to implement an device IOTLB for vhost. This cou
On 12/22/2015 05:07 PM, Stefan Hajnoczi wrote:
> This series is based on v4.4-rc2 and the "virtio: make find_vqs()
> checkpatch.pl-friendly" patch I recently submitted.
>
> v4:
> * Addressed code review comments from Alex Bennee
> * MAINTAINERS file entries for new files
> * Trace events inste
On 01/04/2016 09:39 AM, Yang Zhang wrote:
> On 2015/12/31 15:13, Jason Wang wrote:
>> This patch tries to implement an device IOTLB for vhost. This could be
>> used with for co-operation with userspace(qemu) implementation of
>> iommu for a secure DMA environment in gue
On 12/31/2015 07:17 PM, Michael S. Tsirkin wrote:
> On Thu, Dec 31, 2015 at 03:13:45PM +0800, Jason Wang wrote:
>> This patch tries to implement an device IOTLB for vhost. This could be
>> used with for co-operation with userspace(qemu) implementation of
>> iommu for a secu
not reused (maybe there's a chance).
- working at PAGE_SIZE level, don't support large mappings.
- better data structure for IOTLB instead of simple hash array.
- better API, e.g using mmap() instead of preset userspace address.
Signed-off-by: Jason Wang
---
drivers/vhost/net.c|
On 12/02/2015 08:36 PM, Michael S. Tsirkin wrote:
> On Wed, Dec 02, 2015 at 01:04:03PM +0800, Jason Wang wrote:
>>
>> On 12/01/2015 10:43 PM, Michael S. Tsirkin wrote:
>>> On Tue, Dec 01, 2015 at 01:17:49PM +0800, Jason Wang wrote:
>>>> On 11/30/2015 06:44 PM
On 12/01/2015 10:43 PM, Michael S. Tsirkin wrote:
> On Tue, Dec 01, 2015 at 01:17:49PM +0800, Jason Wang wrote:
>>
>> On 11/30/2015 06:44 PM, Michael S. Tsirkin wrote:
>>> On Wed, Nov 25, 2015 at 03:11:29PM +0800, Jason Wang wrote:
>>>>> This patch tries to
This path introduces a helper which can give a hint for whether or not
there's a work queued in the work list.
Signed-off-by: Jason Wang
---
drivers/vhost/vhost.c | 7 +++
drivers/vhost/vhost.h | 1 +
2 files changed, 8 insertions(+)
diff --git a/drivers/vhost/vhost.c b/drivers/
This patch tries to poll for new added tx buffer or socket receive
queue for a while at the end of tx/rx processing. The maximum time
spent on polling were specified through a new kind of vring ioctl.
Signed-off-by: Jason Wang
---
drivers/vhost/net.c| 72
Signed-off-by: Jason Wang
---
drivers/vhost/vhost.c | 13 +
drivers/vhost/vhost.h | 1 +
2 files changed, 14 insertions(+)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 163b365..4f45a03 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers/vhost/vhost.c
@@ -1633,6
busyloop_timeout
- Split out the busy polling logic into a new helper
- Check and exit the loop when there's a pending signal
- Disable preemption during busy looping to make sure lock_clock() was
correctly used.
Jason Wang (3):
vhost: introduce vhost_has_work()
vhost: introduce vhost_vq_more_
On 11/30/2015 06:44 PM, Michael S. Tsirkin wrote:
> On Wed, Nov 25, 2015 at 03:11:29PM +0800, Jason Wang wrote:
>> > This patch tries to poll for new added tx buffer or socket receive
>> > queue for a while at the end of tx/rx processing. The maximum time
>> > s
On 11/30/2015 04:22 PM, Michael S. Tsirkin wrote:
> On Wed, Nov 25, 2015 at 03:11:28PM +0800, Jason Wang wrote:
>> Signed-off-by: Jason Wang
>> ---
>> drivers/vhost/vhost.c | 26 +-
>> drivers/vhost/vhost.h | 1 +
>> 2 files chang
This patch tries to poll for new added tx buffer or socket receive
queue for a while at the end of tx/rx processing. The maximum time
spent on polling were specified through a new kind of vring ioctl.
Signed-off-by: Jason Wang
---
drivers/vhost/net.c| 72
Signed-off-by: Jason Wang
---
drivers/vhost/vhost.c | 26 +-
drivers/vhost/vhost.h | 1 +
2 files changed, 18 insertions(+), 9 deletions(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 163b365..b86c5aa 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers
This path introduces a helper which can give a hint for whether or not
there's a work queued in the work list.
Signed-off-by: Jason Wang
---
drivers/vhost/vhost.c | 7 +++
drivers/vhost/vhost.h | 1 +
2 files changed, 8 insertions(+)
diff --git a/drivers/vhost/vhost.c b/drivers/
clock() was
correctly used.
Jason Wang (3):
vhost: introduce vhost_has_work()
vhost: introduce vhost_vq_more_avail()
vhost_net: basic polling support
drivers/vhost/net.c| 72 ++
drivers/vhost/vhost.c
On 11/13/2015 05:20 PM, Jason Wang wrote:
>
> On 11/12/2015 08:02 PM, Felipe Franciosi wrote:
>> Hi Jason,
>>
>> I understand your busy loop timeout is quite conservative at 50us. Did you
>> try any other values?
> I've also tried 20us. And results show
GN_SIZE);
> if ((a.avail_user_addr & (VRING_AVAIL_ALIGN_SIZE - 1)) ||
> (a.used_user_addr & (VRING_USED_ALIGN_SIZE - 1)) ||
> - (a.log_guest_addr & (sizeof(u64) - 1))) {
> + (a.log_guest_addr & (VRING_USED_ALIGN_SIZE - 1))) {
>
he issue. But haven't tested this for vhost
polling. Will run some simple test (e.g pin two vhost threads in one
host cpu), and see how well it perform.
Thanks
>
> Thanks,
> Felipe
>
>
>
> On 12/11/2015 10:20, "kvm-ow...@vger.kernel.org on behalf of Jason Wang&quo
On 11/12/2015 06:16 PM, Jason Wang wrote:
> Hi all:
>
> This series tries to add basic busy polling for vhost net. The idea is
> simple: at the end of tx/rx processing, busy polling for new tx added
> descriptor and rx receive socket for a while. The maximum number of
> tim
logic into a new helper
- Check and exit the loop when there's a pending signal
- Disable preemption during busy looping to make sure lock_clock() was
correctly used.
Jason Wang (3):
vhost: introduce vhost_has_work()
vhost: introduce vhost_vq_more_avail()
vhost_net: basic polling su
This path introduces a helper which can give a hint for whether or not
there's a work queued in the work list.
Signed-off-by: Jason Wang
---
drivers/vhost/vhost.c | 7 +++
drivers/vhost/vhost.h | 1 +
2 files changed, 8 insertions(+)
diff --git a/drivers/vhost/vhost.c b/drivers/
Signed-off-by: Jason Wang
---
drivers/vhost/vhost.c | 26 +-
drivers/vhost/vhost.h | 1 +
2 files changed, 18 insertions(+), 9 deletions(-)
diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c
index 163b365..b86c5aa 100644
--- a/drivers/vhost/vhost.c
+++ b/drivers
This patch tries to poll for new added tx buffer or socket receive
queue for a while at the end of tx/rx processing. The maximum time
spent on polling were specified through a new kind of vring ioctl.
Signed-off-by: Jason Wang
---
drivers/vhost/net.c| 77
On 11/10/2015 04:19 AM, Michael S. Tsirkin wrote:
> On Mon, Nov 09, 2015 at 12:35:45PM +0800, Jason Wang wrote:
>> >
>> >
>> > On 11/09/2015 01:11 AM, Michael S. Tsirkin wrote:
>>> > > On Tue, Sep 15, 2015 at 02:41:53PM +0800, Jason Wang wrote:
On 11/09/2015 01:11 AM, Michael S. Tsirkin wrote:
> On Tue, Sep 15, 2015 at 02:41:53PM +0800, Jason Wang wrote:
>> Hi:
>>
>> This series fixes two issues of fast mmio eventfd:
>>
>> 1) A single iodev instance were registerd on two buses: KVM_MMIO_BUS
>>
On 10/30/2015 07:58 PM, Jason Wang wrote:
>
> On 10/29/2015 04:45 PM, Jason Wang wrote:
>> Hi all:
>>
>> This series tries to add basic busy polling for vhost net. The idea is
>> simple: at the end of tx processing, busy polling for new tx added
>> descript
On 10/29/2015 04:45 PM, Jason Wang wrote:
> Hi all:
>
> This series tries to add basic busy polling for vhost net. The idea is
> simple: at the end of tx processing, busy polling for new tx added
> descriptor and rx receive socket for a while. The maximum number of
> time (in
igure per VM through ioctl.
Please review.
Thanks
Jason Wang (2):
vhost: introduce vhost_has_work()
vhost_net: basic polling support
drivers/vhost/net.c | 54 +++
drivers/vhost/vhost.c | 7 +++
drivers/vhost/vhost.h | 1 +
3 files change
This path introduces a helper which can give a hint for whether or not
there's a work queued in the work list.
Signed-off-by: Jason Wang
---
drivers/vhost/vhost.c | 7 +++
drivers/vhost/vhost.h | 1 +
2 files changed, 8 insertions(+)
diff --git a/drivers/vhost/vhost.c b/drivers/
olled.
Signed-off-by: Jason Wang
---
drivers/vhost/net.c | 54 +
1 file changed, 50 insertions(+), 4 deletions(-)
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 9eda69e..30e6d3d 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/
On 10/23/2015 12:16 AM, Michael S. Tsirkin wrote:
> On Thu, Oct 22, 2015 at 08:46:33AM -0700, Rick Jones wrote:
>> On 10/22/2015 02:33 AM, Michael S. Tsirkin wrote:
>>> On Thu, Oct 22, 2015 at 01:27:29AM -0400, Jason Wang wrote:
>>>> This patch tries to poll for n
On 10/22/2015 05:33 PM, Michael S. Tsirkin wrote:
> On Thu, Oct 22, 2015 at 01:27:29AM -0400, Jason Wang wrote:
>> This patch tries to poll for new added tx buffer for a while at the
>> end of tx processing. The maximum time spent on polling were limited
>> through a modul
On 10/22/2015 04:38 PM, Michael S. Tsirkin wrote:
> On Thu, Oct 22, 2015 at 01:27:28AM -0400, Jason Wang wrote:
>> > This path introduces a helper which can give a hint for whether or not
>> > there's a work queued in the work list.
>> >
>> > Signe
olled.
busyloop_timeout = 50 gives us following improvement on TCP_RR test:
size/session/+thu%/+normalize%
1/ 1/ +5%/ -20%
1/50/ +17%/ +3%
Signed-off-by: Jason Wang
---
drivers/vhost/net.c | 19 +++
1 file changed, 19 insertions(+)
diff --git a/drivers/vhost/
This path introduces a helper which can give a hint for whether or not
there's a work queued in the work list.
Signed-off-by: Jason Wang
---
drivers/vhost/vhost.c | 6 ++
drivers/vhost/vhost.h | 1 +
2 files changed, 7 insertions(+)
diff --git a/drivers/vhost/vhost.c b/drivers/
00 01
10 00 00
RIP [] ioeventfd_release+0x28/0x60 [kvm]
RSP
Cc: sta...@vger.kernel.org
Cc: Gleb Natapov
Cc: Paolo Bonzini
Signed-off-by: Jason Wang
---
virt/kvm/eventfd.c | 43 +--
1 file changed, 25 insertions(+), 18 deletions(-)
diff --git a/vi
Cc: Gleb Natapov
Cc: Paolo Bonzini
Signed-off-by: Jason Wang
---
Documentation/virtual/kvm/api.txt | 7 ++-
include/uapi/linux/kvm.h | 1 +
virt/kvm/kvm_main.c | 1 +
3 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/Documentation/virtual/kvm/api.txt
b
using zero length if an
iodevice is zero length.
Cc: sta...@vger.kernel.org
Cc: Gleb Natapov
Cc: Paolo Bonzini
Signed-off-by: Jason Wang
---
virt/kvm/kvm_main.c | 19 +--
1 file changed, 17 insertions(+), 2 deletions(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
This patch factors out core eventfd assign/deassign logic and leaves
the argument checking and bus index selection to callers.
Cc: sta...@vger.kernel.org
Cc: Gleb Natapov
Cc: Paolo Bonzini
Signed-off-by: Jason Wang
---
virt/kvm/eventfd.c | 85
Cc: Gleb Natapov
Cc: Paolo Bonzini
Signed-off-by: Jason Wang
---
arch/x86/kvm/trace.h | 18 ++
arch/x86/kvm/vmx.c | 1 +
arch/x86/kvm/x86.c | 1 +
3 files changed, 20 insertions(+)
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index 4eae7c3..ce4abe3 100644
We only want zero length mmio eventfd to be registered on
KVM_FAST_MMIO_BUS. So check this explicitly when arg->len is zero to
make sure this.
Cc: sta...@vger.kernel.org
Cc: Gleb Natapov
Cc: Paolo Bonzini
Signed-off-by: Jason Wang
---
virt/kvm/eventfd.c | 4 ++--
1 file changed, 2 inserti
Changes from V2:
- Tweak styles and comment suggested by Cornelia.
Changes from v1:
- change ioeventfd_bus_from_flags() to return KVM_FAST_MMIO_BUS when
needed to save lots of unnecessary changes.
Jason Wang (6):
kvm: don't try to register to KVM_FAST_MMIO_BUS for non mmio eventfd
kvm: fac
On 09/11/2015 04:33 PM, Paolo Bonzini wrote:
>
> On 11/09/2015 10:15, Michael S. Tsirkin wrote:
>> I think we should add a capability for fast mmio.
>> This way, userspace can avoid crashing buggy kernels.
> I agree.
>
> Paolo
Right, then qemu will use datamatch eventfd if kenrel dost not have t
On 09/11/2015 04:31 PM, Cornelia Huck wrote:
> On Fri, 11 Sep 2015 10:26:41 +0200
> Paolo Bonzini wrote:
>
>> On 11/09/2015 05:17, Jason Wang wrote:
>>> + int len = r2->len ? r1->len : 0;
>>> +
>>> if (r1->addr < r2->addr)
>&
On 09/11/2015 03:46 PM, Cornelia Huck wrote:
> On Fri, 11 Sep 2015 11:17:35 +0800
> Jason Wang wrote:
>
>> We register wildcard mmio eventfd on two buses, one for KVM_MMIO_BUS
>> and another is KVM_FAST_MMIO_BUS but with a single iodev
>> instance. This will lead a
On 09/11/2015 03:39 PM, Cornelia Huck wrote:
> On Fri, 11 Sep 2015 11:17:34 +0800
> Jason Wang wrote:
>
>> This patch factors out core eventfd assign/deassign logic and leave
>> the argument checking and bus index selection to callers.
>>
>> Cc: Gleb Natapov
&g
01
10 00 00
RIP [] ioeventfd_release+0x28/0x60 [kvm]
RSP
Cc: Gleb Natapov
Cc: Paolo Bonzini
Cc: Michael S. Tsirkin
Signed-off-by: Jason Wang
---
virt/kvm/eventfd.c | 111 -
1 file changed, 59 insertions(+), 52 deletions(-)
diff --git
This patch factors out core eventfd assign/deassign logic and leave
the argument checking and bus index selection to callers.
Cc: Gleb Natapov
Cc: Paolo Bonzini
Signed-off-by: Jason Wang
---
virt/kvm/eventfd.c | 83 --
1 file changed, 49
.
Changes from v1:
- change ioeventfd_bus_from_flags() to return KVM_FAST_MMIO_BUS when
needed to save lots of unnecessary changes.
Jason Wang (4):
kvm: factor out core eventfd assign/deassign logic
kvm: fix double free for fast mmio eventfd
kvm: fix zero length mmio searching
kvm: add
zero length if an iodevice is zero length.
Cc: Gleb Natapov
Cc: Paolo Bonzini
Signed-off-by: Jason Wang
---
virt/kvm/kvm_main.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index d8db2f8f..d4c3b66 100644
--- a/virt/kvm
Cc: Gleb Natapov
Cc: Paolo Bonzini
Signed-off-by: Jason Wang
---
arch/x86/kvm/trace.h | 18 ++
arch/x86/kvm/vmx.c | 1 +
arch/x86/kvm/x86.c | 1 +
3 files changed, 20 insertions(+)
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index 4eae7c3..ce4abe3 100644
On 09/01/2015 02:54 PM, Michael S. Tsirkin wrote:
> On Tue, Sep 01, 2015 at 12:47:36PM +0800, Jason Wang wrote:
>>
>> On 09/01/2015 12:31 PM, Michael S. Tsirkin wrote:
>>> On Tue, Sep 01, 2015 at 11:33:43AM +0800, Jason Wang wrote:
>>>> On 08/31/2015 07:33 PM
On 09/01/2015 12:36 PM, Michael S. Tsirkin wrote:
> On Tue, Sep 01, 2015 at 11:37:13AM +0800, Jason Wang wrote:
>> >
>> >
>> > On 08/30/2015 05:12 PM, Michael S. Tsirkin wrote:
>>> > > Even when we skip data decoding, MMIO is slightly slower
>>
On 09/01/2015 12:31 PM, Michael S. Tsirkin wrote:
> On Tue, Sep 01, 2015 at 11:33:43AM +0800, Jason Wang wrote:
>>
>> On 08/31/2015 07:33 PM, Michael S. Tsirkin wrote:
>>> On Mon, Aug 31, 2015 at 04:03:59PM +0800, Jason Wang wrote:
>>>>>
>>>>
On 08/30/2015 05:12 PM, Michael S. Tsirkin wrote:
> Even when we skip data decoding, MMIO is slightly slower
> than port IO because it uses the page-tables, so the CPU
> must do a pagewalk on each access.
>
> This overhead is normally masked by using the TLB cache:
> but not so for KVM MMIO, wher
On 08/31/2015 07:33 PM, Michael S. Tsirkin wrote:
> On Mon, Aug 31, 2015 at 04:03:59PM +0800, Jason Wang wrote:
>> >
>> >
>> > On 08/31/2015 03:29 PM, Michael S. Tsirkin wrote:
>>>>>>> > >>>>> Thinking more about this,
On 08/31/2015 03:29 PM, Michael S. Tsirkin wrote:
> Thinking more about this, invoking the 0-length write after
> > >> > the != 0 length one would be better: it would mean we only
> > >> > handle the userspace MMIO like this.
>>> > > Right.
>>> > >
>> >
>> > Using current unittest. T
On 08/26/2015 01:10 PM, Jason Wang wrote:
> On 08/25/2015 07:51 PM, Michael S. Tsirkin wrote:
>> > On Tue, Aug 25, 2015 at 05:05:47PM +0800, Jason Wang wrote:
>>>> >> > We register wildcard mmio eventfd on two buses, one for KVM_MMIO_BUS
>>>> >>
On 08/26/2015 01:45 PM, Joe Perches wrote:
> On Wed, 2015-08-26 at 13:39 +0800, Jason Wang wrote:
>> >
>> > On 08/25/2015 11:29 PM, Joe Perches wrote:
>>> > > On Tue, 2015-08-25 at 15:47 +0800, Jason Wang wrote:
>>>>> > >> > A
On 08/25/2015 11:29 PM, Joe Perches wrote:
> On Tue, 2015-08-25 at 15:47 +0800, Jason Wang wrote:
>> > All fields of kvm_io_range were initialized or copied explicitly
>> > afterwards. So switch to use kmalloc().
> Is there any compiler added alignment padding
>
On 08/25/2015 07:51 PM, Michael S. Tsirkin wrote:
> On Tue, Aug 25, 2015 at 05:05:47PM +0800, Jason Wang wrote:
>> > We register wildcard mmio eventfd on two buses, one for KVM_MMIO_BUS
>> > and another is KVM_FAST_MMIO_BUS. This leads to issue:
>> >
>> &g
On 08/25/2015 07:34 PM, Michael S. Tsirkin wrote:
> On Tue, Aug 25, 2015 at 03:47:15PM +0800, Jason Wang wrote:
>> > Cc: Gleb Natapov
>> > Cc: Paolo Bonzini
>> > Cc: Michael S. Tsirkin
>> > Signed-off-by: Jason Wang
>> > ---
>> > a
On 08/25/2015 07:33 PM, Michael S. Tsirkin wrote:
> On Tue, Aug 25, 2015 at 03:47:14PM +0800, Jason Wang wrote:
>> > We register wildcard mmio eventfd on two buses, one for KVM_MMIO_BUS
>> > and another is KVM_FAST_MMIO_BUS. This leads to issue:
>> >
>> &g
All fields of kvm_io_range were initialized or copied explicitly
afterwards. So switch to use kmalloc().
Cc: Gleb Natapov
Cc: Paolo Bonzini
Cc: Michael S. Tsirkin
Signed-off-by: Jason Wang
---
virt/kvm/kvm_main.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/virt
tfd_release+0x28/0x60 [kvm]
RSP
Cc: Gleb Natapov
Cc: Paolo Bonzini
Cc: Michael S. Tsirkin
Signed-off-by: Jason Wang
---
Changes from V2:
- Tweak styles and comment suggested by Cornelia.
Changes from v1:
- change ioeventfd_bus_from_flags() to return KVM_FAST_MMIO_BUS when
needed to save lots of
Cc: Gleb Natapov
Cc: Paolo Bonzini
Cc: Michael S. Tsirkin
Signed-off-by: Jason Wang
---
arch/x86/kvm/trace.h | 17 +
arch/x86/kvm/vmx.c | 1 +
arch/x86/kvm/x86.c | 1 +
3 files changed, 19 insertions(+)
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index
On 08/25/2015 04:20 PM, Cornelia Huck wrote:
> On Tue, 25 Aug 2015 15:47:14 +0800
> Jason Wang wrote:
>
>> diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
>> index 9ff4193..95f2901 100644
>> --- a/virt/kvm/eventfd.c
>> +++ b/virt/kv
All fields of kvm_io_range were initialized or copied explicitly
afterwards. So switch to use kmalloc().
Cc: Gleb Natapov
Cc: Paolo Bonzini
Cc: Michael S. Tsirkin
Signed-off-by: Jason Wang
---
virt/kvm/kvm_main.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/virt
Cc: Gleb Natapov
Cc: Paolo Bonzini
Cc: Michael S. Tsirkin
Signed-off-by: Jason Wang
---
arch/x86/kvm/trace.h | 17 +
arch/x86/kvm/vmx.c | 1 +
arch/x86/kvm/x86.c | 1 +
3 files changed, 19 insertions(+)
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index
tfd_release+0x28/0x60 [kvm]
RSP
Cc: Gleb Natapov
Cc: Paolo Bonzini
Cc: Michael S. Tsirkin
Signed-off-by: Jason Wang
---
Changes from v1:
- change ioeventfd_bus_from_flags() to return KVM_FAST_MMIO_BUS when
needed to save lots of unnecessary changes.
---
virt/kvm/even
On 08/25/2015 11:04 AM, Jason Wang wrote:
[...]
>>>>> @@ -900,10 +899,11 @@ kvm_deassign_ioeventfd(struct kvm *kvm, struct
>>>>> kvm_ioeventfd *args)
>>>>> >>>> if (!p->wildcard && p->
On 08/24/2015 10:05 PM, Cornelia Huck wrote:
> On Mon, 24 Aug 2015 11:29:29 +0800
> Jason Wang wrote:
>
>> On 08/21/2015 05:29 PM, Cornelia Huck wrote:
>>> On Fri, 21 Aug 2015 16:03:52 +0800
>>> Jason Wang wrote:
>>>> @@ -850,9 +845,15 @@
On 08/21/2015 05:29 PM, Cornelia Huck wrote:
> On Fri, 21 Aug 2015 16:03:52 +0800
> Jason Wang wrote:
>
>
>> diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
>> index 9ff4193..834a409 100644
>> --- a/virt/kvm/eventfd.c
>> +++ b/virt/kvm/eventfd.c
>>
elease+0x28/0x60 [kvm]
RSP
Cc: Gleb Natapov
Cc: Paolo Bonzini
Cc: Michael S. Tsirkin
Signed-off-by: Jason Wang
---
virt/kvm/eventfd.c | 18 +-
virt/kvm/kvm_main.c | 16 ++--
2 files changed, 23 insertions(+), 11 deletions(-)
diff --git a/virt/kvm/eventfd.c
Cc: Gleb Natapov
Cc: Paolo Bonzini
Cc: Michael S. Tsirkin
Signed-off-by: Jason Wang
---
arch/x86/kvm/trace.h | 17 +
arch/x86/kvm/vmx.c | 1 +
arch/x86/kvm/x86.c | 1 +
3 files changed, 19 insertions(+)
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index
All fields of kvm_io_range were initialized or copied explicitly
afterwards. So switch to use kmalloc().
Cc: Gleb Natapov
Cc: Paolo Bonzini
Cc: Michael S. Tsirkin
Signed-off-by: Jason Wang
---
virt/kvm/kvm_main.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/virt
el/git/davem/net")
Cc: David S. Miller
Cc: Al Viro
Cc: Michael S. Tsirkin
Signed-off-by: Jason Wang
---
drivers/vhost/net.c | 11 ++-
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index 8dccca9..afa06d2 100644
--- a/drivers/vh
On Sun, Feb 15, 2015 at 3:30 PM, Ding Xiao
wrote:
I am test virtio-vhost in 10G environment
host info
cpu E2680@2.7GHz
memory 16G
network intel 82599BE
os centos 7
VM info
cpu 4
memory 4G
network using virtio vhost
os centos 7
I using pktgen to send udp package, the result like follow
64b
On Sun, Nov 30, 2014 at 1:04 PM, David Miller
wrote:
From: Jason Wang
Date: Thu, 27 Nov 2014 14:41:21 +0800
Signed-off-by: Jason Wang
I don't think generic vhost patches should go via my tree.
If you disagree, let me know why, thanks :)
Agree. Michael, could you pls pick this
RTIO_NET_F_MRG_RXBUF) |
+ (1ULL << VIRTIO_F_VERSION_1))) ?
sizeof(struct virtio_net_hdr_mrg_rxbuf) :
sizeof(struct virtio_net_hdr);
if (features & (1 << VHOST_NET_F_VIRTIO_NET_HDR)) {
--
MST
Reviewe
-#define VHOST_DMA_IS_DONE(len) ((len) >= VHOST_DMA_DONE_LEN)
+#define VHOST_DMA_IS_DONE(len) ((__force u32)(len) >= (__force
u32)VHOST_DMA_DONE_LEN)
enum {
VHOST_NET_FEATURES = VHOST_FEATURES |
--
MST
Reviewed-by: Jason Wang
--
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virtqueue *vq,
u64 val)
+{
+ return __cpu_to_virtio64(vhost_has_feature(vq, VIRTIO_F_VERSION_1),
val);
+}
#endif
--
MST
Reviewed-by: Jason Wang
--
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the body of a message to majord...@vger.kernel.org
More
s & (1ULL << bit);
}
#endif
--
MST
Reviewed-by: Jason Wang
--
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Signed-off-by: Jason Wang
---
drivers/vhost/vhost.h | 4
1 file changed, 4 deletions(-)
diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h
index 3eda654..7d039ef 100644
--- a/drivers/vhost/vhost.h
+++ b/drivers/vhost/vhost.h
@@ -12,8 +12,6 @@
#include
#include
-struct
On 11/18/2014 07:05 PM, Michael S. Tsirkin wrote:
> On Tue, Nov 18, 2014 at 11:37:03AM +0800, Jason Wang wrote:
>> > On 11/17/2014 07:58 PM, Michael S. Tsirkin wrote:
>>> > > On Mon, Nov 17, 2014 at 01:22:07PM +0200, Gleb Natapov wrote:
>>>>> >
On 11/18/2014 09:37 AM, Zhang Haoyu wrote:
>> On Mon, Nov 17, 2014 at 01:58:20PM +0200, Michael S. Tsirkin wrote:
>>> On Mon, Nov 17, 2014 at 01:22:07PM +0200, Gleb Natapov wrote:
On Mon, Nov 17, 2014 at 12:38:16PM +0200, Michael S. Tsirkin wrote:
> On Mon, Nov 17, 2014 at 09:44:23AM +0200
On 11/17/2014 07:58 PM, Michael S. Tsirkin wrote:
> On Mon, Nov 17, 2014 at 01:22:07PM +0200, Gleb Natapov wrote:
>> > On Mon, Nov 17, 2014 at 12:38:16PM +0200, Michael S. Tsirkin wrote:
>>> > > On Mon, Nov 17, 2014 at 09:44:23AM +0200, Gleb Natapov wrote:
> > > On Sun, Nov 16, 2014 at 08:56:0
On 11/17/2014 12:54 PM, Venkateswara Rao Nandigam wrote:
> I have a question related this topic. So How do you set the RSS Key on the
> Mellanox NIc? I mean from your Guest?
I believe it's possible but not implemented currently. The issue is the
implementation should not be vendor specific.
TUN/
On 11/17/2014 02:56 AM, Michael S. Tsirkin wrote:
> On Sun, Nov 16, 2014 at 06:18:18PM +0200, Gleb Natapov wrote:
>> Hi Michael,
>>
>> I am playing with vhost multiqueue capability and have a question about
>> vhost multiqueue and RSS (receive side steering). My setup has Mellanox
>> ConnectX-3 NI
On 10/15/2014 01:40 PM, Rusty Russell wrote:
> Jason Wang writes:
>> Below should be useful for some experiments Jason is doing.
>> I thought I'd send it out for early review/feedback.
>>
>> event idx feature allows us to defer interrupts until
>>
On 10/15/2014 07:06 AM, Michael S. Tsirkin wrote:
> On Tue, Oct 14, 2014 at 02:53:27PM -0400, David Miller wrote:
>> > From: Jason Wang
>> > Date: Sat, 11 Oct 2014 15:16:43 +0800
>> >
>>> > > We free old transmitted packets in ndo_start_xmit() curr
On 10/15/2014 05:51 AM, Michael S. Tsirkin wrote:
> On Sat, Oct 11, 2014 at 03:16:46PM +0800, Jason Wang wrote:
>> > We free transmitted packets in ndo_start_xmit() in the past to get better
>> > performance in the past. One side effect is that skb_orphan() needs
On 10/15/2014 05:51 AM, Michael S. Tsirkin wrote:
> On Tue, Oct 14, 2014 at 02:53:27PM -0400, David Miller wrote:
>> From: Jason Wang
>> Date: Sat, 11 Oct 2014 15:16:43 +0800
>>
>>> We free old transmitted packets in ndo_start_xmit() currently, so any
>>> p
On 10/12/2014 05:27 PM, Michael S. Tsirkin wrote:
> On Sat, Oct 11, 2014 at 03:16:44PM +0800, Jason Wang wrote:
>> Below should be useful for some experiments Jason is doing.
>> I thought I'd send it out for early review/feedback.
>>
>> event idx feature allows u
On 10/11/2014 10:48 PM, Eric Dumazet wrote:
> On Sat, 2014-10-11 at 15:16 +0800, Jason Wang wrote:
>> We free transmitted packets in ndo_start_xmit() in the past to get better
>> performance in the past. One side effect is that skb_orphan() needs to be
>> called in ndo_sta
driver-specific feature bit.
Signed-off-by: Michael S. Tsirkin
Signed-off-by: Jason Wang
---
drivers/virtio/virtio_ring.c | 75 +---
include/linux/virtio.h | 14
include/uapi/linux/virtio_ring.h | 5 ++-
3 files changed, 89 insertions(
This patches let vhost-net support urgent descriptors. For zerocopy case,
two new types of length was introduced to make it work.
Signed-off-by: Michael S. Tsirkin
Signed-off-by: Jason Wang
---
drivers/vhost/net.c | 43 +++
drivers/vhost/scsi.c | 23
ts in ndo_start_xmit() but enable
tx interrupt for those packets. After we get tx interrupt, a tx napi was
scheduled to free those packets.
With this method, sk_wmem_alloc of TCP socket were more accurate than in
the past which let TCP can batch more through TSQ and auto corking.
Signed-off-by: Jason
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