Hello,
I have a question related to KVM_IRQFD and KVM_SET_GSI_ROUTING ioctl
relationship.
When reading the KVM API documentation I do not understand there is any
dependency between KVM_IRQFD and KVM_SET_GSI_ROUTING. According to the
text it seems only the gsi field is used and interpreted as the
On 06/06/2014 02:16 PM, Christoffer Dall wrote:
> On Mon, Jun 02, 2014 at 02:54:12PM +0100, Marc Zyngier wrote:
>> Hi Eric,
>>
>> On Mon, Jun 02 2014 at 8:29:56 am BST, Eric Auger
>> wrote:
>>> This patch enables irqfd and irq routing on ARM.
>>>
On 06/14/2014 10:51 PM, Christoffer Dall wrote:
> The handling of writes to the GICD_ISPENDRn and GICD_ICPENDRn is
> currently not handled correctly for level-triggered interrupts.
Hi Christoffer,
Thanks for this patch serie. I can confirm it fixes my QEMU/VFIO issue
where all IRQs were pending cl
On 06/14/2014 10:51 PM, Christoffer Dall wrote:
> The irq_state field on the distributor struct is ambiguous in its
> meaning; the comment says it's the level of the input put, but that
> doesn't make much sense for edge-triggered interrupts. The code
> actually uses this state variable to check i
On 06/14/2014 10:51 PM, Christoffer Dall wrote:
> The VGIC virtual distributor implementation documentation was written a
> very long time ago, before the true nature of the beast had been
> partially absorbed into my bloodstream. I think this amalgamates the
> two evil beings (myself and the code
Hi,
If I am not wrong I did not get any reply to this question. Can anyone
share his/her experience/knowledge on this gsi routing/irqfd use case?
Thank you in advance
Best Regards
Eric
On 06/17/2014 01:39 PM, Eric Auger wrote:
> Hello,
>
> I have a question related to KVM_
> start to stabilise, I can help with testing.
Hi Will,
sure I will CC you.
>
> On Thu, Jun 05, 2014 at 03:39:50PM +0100, Christoffer Dall wrote:
>> On Thu, Jun 05, 2014 at 03:15:15PM +0200, Eric Auger wrote:
>>> On 06/05/2014 12:28 PM, Christoffer Dall wrote:
>>>
on top of
https://lists.cs.columbia.edu/pipermail/kvmarm/2014-June/009979.html
All pieces can be found on git://git.linaro.org/people/eric.auger/linux.git
branch irqfd_integ_v3
Signed-off-by: Eric Auger
---
GSI routing mostly is implemented in generic irqchip.c.
The tiny ARM specific part is
On 06/24/2014 12:40 PM, Alexander Graf wrote:
>
> On 24.06.14 11:47, Paul Mackerras wrote:
>> On Mon, Jun 23, 2014 at 06:47:51PM +0200, Alexander Graf wrote:
>>> On 17.06.14 13:39, Eric Auger wrote:
>>>> Hello,
>>>>
>>>> I have a qu
On 06/24/2014 05:47 PM, Alexander Graf wrote:
>
> On 24.06.14 17:05, Eric Auger wrote:
>> On 06/24/2014 12:40 PM, Alexander Graf wrote:
>>> On 24.06.14 11:47, Paul Mackerras wrote:
>>>> On Mon, Jun 23, 2014 at 06:47:51PM +0200, Alexander Graf wrote:
>>
Hi Paul,
I also confirm your patch works fine on my ARM test environment. I was
able to run
- with irqchip without regression
- without irqchip (ie removing routing totally), just implementing
identity kvm_irq_map_gsi and kvm_irq_map_chip_pin and proper
kvm_set_irq. The overall integration becomes
thanks to Paul Mackerras' patch serie:
"IRQFD without IRQ routing, enabled for XICS"
(https://www.mail-archive.com/kvm@vger.kernel.org/msg104478.html)
Signed-off-by: Eric Auger
---
This patch would deprecate the previous patch featuring GSI routing
(https://patches.linaro.org/322
On 08/12/2014 04:41 AM, Li Liu wrote:
> Hi all,
>
> Is anyone there can tell the current status of vhost-net on kvm-arm?
>
> Half a year has passed from Isa Ansharullah asked this question:
> http://www.spinics.net/lists/kvm-arm/msg08152.html
>
> I have found two patches which have provided the
On 08/13/2014 04:55 PM, Christoffer Dall wrote:
> On Mon, Aug 04, 2014 at 02:08:22PM +0200, Eric Auger wrote:
>> This patch enables irqfd on ARM.
>>
>> irqfd framework enables to inject a virtual IRQ into a guest upon an
>> eventfd trigger. User-side uses KVM_IRQFD V
On 08/13/2014 04:55 PM, Christoffer Dall wrote:
> On Mon, Aug 04, 2014 at 02:08:22PM +0200, Eric Auger wrote:
>> This patch enables irqfd on ARM.
>>
>> irqfd framework enables to inject a virtual IRQ into a guest upon an
>> eventfd trigger. User-side uses KVM_IRQFD V
ck in __kvm_vgic_sync_hwstate
- remove irq.h
Eric Auger (2):
KVM: EVENTFD: remove inclusion of irq.h
KVM: ARM: add irqfd support
Documentation/virtual/kvm/api.txt | 5 +++-
arch/arm/include/uapi/asm/kvm.h | 3 +++
arch/arm/kvm/Kconfig | 3 ++-
arch/arm/kvm/Makefile
must correspond to a shared peripheral interrupt (SPI), ie the
GIC interrupt ID is gsi+32.
this patch enables CONFIG_HAVE_KVM_EVENTFD and CONFIG_HAVE_KVM_IRQFD.
No IRQ routing table is used.
Signed-off-by: Eric Auger
---
This patch deprecates the previous patch featuring GSI routing
(https
No more needed. Also irq.h is not used on ARM.
Signed-off-by: Eric Auger
---
virt/kvm/eventfd.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/virt/kvm/eventfd.c b/virt/kvm/eventfd.c
index 3c5981c..0c712a7 100644
--- a/virt/kvm/eventfd.c
+++ b/virt/kvm/eventfd.c
@@ -36,7 +36,6 @@
#include
re of this.
Signed-off-by: Eric Auger
---
arch/arm/include/asm/kvm_host.h | 2 +
arch/arm/kvm/Makefile | 2 +-
arch/arm/kvm/kvm_vfio_arm.c | 599
3 files changed, 602 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/kvm/kvm_vfio_a
a new physical IRQ to hit.
In virtualization use case, the physical IRQ is automatically completed
by the interrupt controller when the guest completes the corresponding
virtual IRQ.
Signed-off-by: Eric Auger
---
drivers/vfio/platform/vfio_platform_irq.c | 7 ++-
1 file changed, 6
add a lock related to the rb tree manipulation. The rb tree can be
searched in one thread (irqfd handler for instance) and map/unmap
happen in another.
Signed-off-by: Eric Auger
---
virt/kvm/arm/vgic.c | 46 +-
1 file changed, 37 insertions(+), 9
eric.auger/linux.git
on branch 3.17rc1_forward_integ_v0
This was was tested on Calxeda Miday, assigning the xgmac main IRQ.
Eric Auger (9):
KVM: ARM: VGIC: fix multiple injection of level sensitive forwarded
IRQ
KVM: ARM: VGIC: add forwarded irq rbtree lock
VFIO: platform: handler tests whet
add a pointer to architecture specific data in kvm_vfio struct
add accessors to keep kvm_vfio private
Signed-off-by: Eric Auger
---
arch/arm/include/asm/kvm_host.h | 8
virt/kvm/vfio.c | 21 +
2 files changed, 29 insertions(+)
diff --git a/arch/arm
forwarded IRQ injection is observed
while the LR of the previous instance was not observed as empty.
Signed-off-by: Eric Auger
---
include/kvm/arm_vgic.h | 1 +
virt/kvm/arm/vgic.c| 9 +++--
2 files changed, 8 insertions(+), 2 deletions(-)
diff --git a/include/kvm/arm_vgic.h b/include/kvm
add functions that implement the gateway to the extended
external VFIO API:
- kvm_vfio_device_get_external_user
- kvm_vfio_device_put_external_user
- kvm_vfio_external_get_type
- kvm_vfio_external_get_base_device
Signed-off-by: Eric Auger
---
arch/arm/include/asm/kvm_host.h | 6
virt/kvm
)
- vfio_external_get_base_device enables to get the
struct device*, useful to access the platform_device
Signed-off-by: Eric Auger
---
drivers/vfio/vfio.c | 35 +++
include/linux/vfio.h | 4
2 files changed, 39 insertions(+)
diff --git a/drivers/vfio/vfio.c b/drivers/vfio
introduce a new option __KVM_HAVE_ARCH_KVM_VFIO option.
When set the generic KVM-VFIO code calls architecture dependent
code.
the architecture dependent hooks are
- kvm_arch_vfio_has_attr
- kvm_arch_vfio_set_attr
- kvm_arch_vfio_init
- kvm_arch_vfio_destroy
Signed-off-by: Eric Auger
add new device group commands:
- KVM_DEV_VFIO_DEVICE_ASSIGN_IRQ and
KVM_DEV_VFIO_DEVICE_DEASSIGN_IRQ
which enable to turn forwarded IRQ mode on/off.
Signed-off-by: Eric Auger
---
Documentation/virtual/kvm/devices/vfio.txt | 25 +
arch/arm/include/uapi/asm/kvm.h
On 08/26/2014 07:49 PM, Alex Williamson wrote:
> On Mon, 2014-08-25 at 15:27 +0200, Eric Auger wrote:
>> This RFC proposes an integration of "ARM: Forwarding physical
>> interrupts to a guest VM" (http://lwn.net/Articles/603514/) in
>> KVM.
>>
>> It enab
On 08/26/2014 09:02 PM, Alex Williamson wrote:
> On Mon, 2014-08-25 at 15:27 +0200, Eric Auger wrote:
>> Implements ARM specific KVM-VFIO device group commands:
>> - KVM_DEV_VFIO_DEVICE_ASSIGN_IRQ
>> - KVM_DEV_VFIO_DEVICE_DEASSIGN_IRQ
>> capability can be querie
On 08/26/2014 09:01 PM, Alex Williamson wrote:
> On Mon, 2014-08-25 at 15:27 +0200, Eric Auger wrote:
>> add new device group commands:
>> - KVM_DEV_VFIO_DEVICE_ASSIGN_IRQ and
>> KVM_DEV_VFIO_DEVICE_DEASSIGN_IRQ
>>
>> which enable to turn forwarded IRQ mode
On 08/26/2014 09:02 PM, Alex Williamson wrote:
> On Mon, 2014-08-25 at 15:27 +0200, Eric Auger wrote:
>> add a pointer to architecture specific data in kvm_vfio struct
>> add accessors to keep kvm_vfio private
>>
>> Signed-off-by: Eric Auger
>> ---
>>
On 08/26/2014 09:02 PM, Alex Williamson wrote:
> On Mon, 2014-08-25 at 15:27 +0200, Eric Auger wrote:
>> New functions are added to be called from ARM KVM-VFIO device.
>>
>> - vfio_device_get_external_user enables to get a vfio device from
>> its fd
>> - vfio_
On 08/27/2014 05:37 PM, Alex Williamson wrote:
> On Wed, 2014-08-27 at 17:22 +0200, Eric Auger wrote:
>> On 08/26/2014 09:02 PM, Alex Williamson wrote:
>>> On Mon, 2014-08-25 at 15:27 +0200, Eric Auger wrote:
>>>> add a pointer to architecture specific data in kvm_vfi
No more needed. irq.h would be void on ARM.
Signed-off-by: Eric Auger
---
I don't think irq.h is needed anymore since Paul Mackerras' work. However
I did not compile for all architectures.
---
virt/kvm/eventfd.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/virt/kvm/eventfd.c
& KVM_CAP_IRQFD_RESAMPLE capabilities are exposed
Signed-off-by: Eric Auger
---
This patch serie deprecates the previous serie featuring GSI routing
(https://patches.linaro.org/32261/)
The patch serie has the following dependencies:
- arm/arm64: KVM: Various VGIC cleanups and improvements
h
,
kvm_vfio_arm.c
Signed-off-by: Eric Auger
---
arch/arm/include/asm/kvm_host.h | 2 +
arch/arm/kvm/Makefile | 2 +-
arch/arm/kvm/kvm_vfio_arm.c | 85 +
3 files changed, 88 insertions(+), 1 deletion(-)
create mode 100644 arch/arm/kvm
, embodied by the
kvm_arch_set_fwd_state function. Its implementation is given in a
separate patch file.
The forwarding control modality is enabled by the
__KVM_HAVE_ARCH_KVM_VFIO_FORWARD define.
Signed-off-by: Eric Auger
---
v1 -> v2:
- __KVM_HAVE_ARCH_KVM_VFIO renamed i
add functions that implement the gateway to the extended
external VFIO API:
- kvm_vfio_device_get_external_user
- kvm_vfio_device_put_external_user
- kvm_vfio_external_base_device
Signed-off-by: Eric Auger
---
v1 -> v2:
- kvm_vfio_external_get_base_device renamed i
in
vgic_update_irq_pending). This obviously assumes the forwarded IRQ is
injected from kernel side.
Signed-off-by: Eric Auger
---
It was attempted to reset the states in __kvm_vgic_sync_hwstate, checking
the emptied LR of forwarded IRQ. However surprisingly this solution does
not seem to work
From: Kim Phillips
Used by KVM-enabled VFIO-based device passthrough support in QEMU.
Signed-off-by: Kim Phillips
---
arch/arm/kvm/Kconfig | 1 +
arch/arm/kvm/Makefile | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm/kvm/Kconfig b/arch/arm/kvm/Kconfig
index e519a
add a lock related to the rb tree manipulation. The rb tree can be
searched in one thread (irqfd handler for instance) and map/unmap
happen in another.
Signed-off-by: Eric Auger
---
include/kvm/arm_vgic.h | 1 +
virt/kvm/arm/vgic.c| 46 +-
2
-by: Eric Auger
---
v1 -> v2:
- vfio_external_get_base_device renamed into vfio_external_base_device
- vfio_external_get_type removed
---
drivers/vfio/vfio.c | 24
include/linux/vfio.h | 3 +++
2 files changed, 27 insertions(+)
diff --git a/drivers/vfio/vfio.
add new device group commands:
- KVM_DEV_VFIO_DEVICE_FORWARD_IRQ and
KVM_DEV_VFIO_DEVICE_UNFORWARD_IRQ
which enable to turn forwarded IRQ mode on/off.
the kvm_arch_forwarded_irq struct embodies a forwarded IRQ
Signed-off-by: Eric Auger
---
v1 -> v2:
- struct kvm_arch_forwarded_irq mo
_external_get_base_device renamed into kvm_vfio_external_base_device
- __KVM_HAVE_ARCH_KVM_VFIO renamed into __KVM_HAVE_ARCH_KVM_VFIO_FORWARD
Eric Auger (8):
KVM: ARM: VGIC: fix multiple injection of level sensitive forwarded
IRQ
KVM: ARM: VGIC: add forwarded irq rbtree lock
VFIO: platform: hand
a new physical IRQ to hit.
In virtualization use case, the physical IRQ is automatically completed
by the interrupt controller when the guest completes the corresponding
virtual IRQ.
Signed-off-by: Eric Auger
---
drivers/vfio/platform/vfio_platform_irq.c | 7 ++-
1 file changed, 6
On 09/02/2014 11:05 PM, Alex Williamson wrote:
> On Mon, 2014-09-01 at 14:52 +0200, Eric Auger wrote:
>> This RFC proposes an integration of "ARM: Forwarding physical
>> interrupts to a guest VM" (http://lwn.net/Articles/603514/) in
>> KVM.
>>
>> It enab
On 09/11/2014 05:09 AM, Christoffer Dall wrote:
> On Mon, Sep 01, 2014 at 10:53:04AM +0200, Eric Auger wrote:
>> This patch enables irqfd on ARM.
>>
>> irqfd framework enables to inject a virtual IRQ into a guest upon an
>> eventfd trigger. User-side uses KVM_IRQFD V
On 09/11/2014 05:10 AM, Christoffer Dall wrote:
> On Mon, Sep 01, 2014 at 02:52:43PM +0200, Eric Auger wrote:
>> In case the IRQ is forwarded, the VFIO platform IRQ handler does not
>> need to disable the IRQ anymore. In that mode, when the handler completes
>
> add a com
On 09/11/2014 05:10 AM, Christoffer Dall wrote:
> On Mon, Sep 01, 2014 at 02:52:44PM +0200, Eric Auger wrote:
>> add new device group commands:
>> - KVM_DEV_VFIO_DEVICE_FORWARD_IRQ and
>> KVM_DEV_VFIO_DEVICE_UNFORWARD_IRQ
>>
>> which enable to turn for
On 09/11/2014 05:10 AM, Christoffer Dall wrote:
> On Mon, Sep 01, 2014 at 02:52:45PM +0200, Eric Auger wrote:
>> New functions are added to be called from ARM KVM-VFIO device.
>
> This commit message seems somewhat random. This patch doesn't deal with
> anything ARM speci
On 09/11/2014 05:10 AM, Christoffer Dall wrote:
> On Mon, Sep 01, 2014 at 02:52:46PM +0200, Eric Auger wrote:
>> add functions that implement the gateway to the extended
>
> Capital letter when beginning a new sentence. Also the reference to
> 'the extended VFIO API
On 09/11/2014 05:10 AM, Christoffer Dall wrote:
> On Mon, Sep 01, 2014 at 02:52:47PM +0200, Eric Auger wrote:
>> This patch introduces a new KVM_DEV_VFIO_DEVICE attribute.
>>
>> This is a new control channel which enables KVM to cooperate with
>> viable VFIO devices.
&g
On 09/11/2014 07:05 AM, Alex Williamson wrote:
> On Thu, 2014-09-11 at 05:10 +0200, Christoffer Dall wrote:
>> On Mon, Sep 01, 2014 at 02:52:47PM +0200, Eric Auger wrote:
>>> This patch introduces a new KVM_DEV_VFIO_DEVICE attribute.
>>>
>>> This is a new
On 09/11/2014 05:09 AM, Christoffer Dall wrote:
> On Mon, Sep 01, 2014 at 02:52:41PM +0200, Eric Auger wrote:
>> add a lock related to the rb tree manipulation. The rb tree can be
>
> Ok, I can't hold myself back any longer.
Please begin sentences with a
> capital lette
On 09/11/2014 05:09 AM, Christoffer Dall wrote:
> On Mon, Sep 01, 2014 at 02:52:40PM +0200, Eric Auger wrote:
>> Fix multiple injection of level sensitive forwarded IRQs.
>> With current code, the second injection fails since the state bitmaps
>> are not reset (process_main
On 11/13/2014 04:31 PM, Andre Przywara wrote:
>
>
> On 13/11/14 15:02, Nikolay Nikolaev wrote:
>> On Thu, Nov 13, 2014 at 4:23 PM, Eric Auger wrote:
>>> On 11/13/2014 03:16 PM, Eric Auger wrote:
>>>> On 11/13/2014 11:45 AM, Nikolay Nikolaev wrote:
&
iamson
>> Sent: Thursday, September 11, 2014 1:10 PM
>> To: Christoffer Dall
>> Cc: Eric Auger; eric.au...@st.com; marc.zyng...@arm.com;
>> linux-arm-ker...@lists.infradead.org; kvm...@lists.cs.columbia.edu;
>> kvm@vger.kernel.org; joel.sch...@amd.com; kim.phill...@free
On 11/20/2014 03:10 PM, Antonios Motakis wrote:
> On Wed, Nov 12, 2014 at 5:36 PM, Alex Williamson
> wrote:
>> On Wed, 2014-11-12 at 11:32 +0100, Eric Auger wrote:
>>> On 10/27/2014 07:07 PM, Antonios Motakis wrote:
>>>> A VFIO userspace driver will start by
On 11/20/2014 04:53 PM, Alex Williamson wrote:
> On Thu, 2014-11-20 at 17:05 +0800, Feng Wu wrote:
>> Add new group KVM_DEV_VFIO_INTERRUPT and command
>> KVM_DEV_VFIO_DEVIE_POSTING_IRQ related to it.
>>
>> This is used for VT-d Posted-Interrupts setup.
>
> Eric proposed an interface for ARM forwar
On 11/20/2014 05:05 PM, Alex Williamson wrote:
> On Thu, 2014-11-20 at 17:05 +0800, Feng Wu wrote:
>> This API returns the host irq for the MSI/MSI-X interrrupts.
>>
>> Signed-off-by: Feng Wu
>> ---
>> drivers/vfio/pci/vfio_pci.c | 10 ++
>> include/linux/vfio.h|2 ++
>> 2 f
Hi Ming,
for your information there is a series written by Antonios (added in CC)
https://lists.cs.columbia.edu/pipermail/kvmarm/2014-March/008416.html
exactly on the same topic.
The thread was reactivated by Nikolay latterly on Nov (see
http://www.gossamer-threads.com/lists/linux/kernel/1886716?
reference)
- remove irq.h
Eric Auger (2):
KVM: arm/arm64: unset CONFIG_HAVE_KVM_IRQCHIP
KVM: arm: add irqfd support
Joel Schopp (1):
KVM: arm64: add irqfd support
Documentation/virtual/kvm/api.txt | 5 ++-
arch/arm/include/uapi/asm/kvm.h | 3 ++
arch/arm/kvm/Kconfig | 4 +--
From: Joel Schopp
This patch enables irqfd for arm64.
Signed-off-by: Joel Schopp
Signed-off-by: Eric Auger
---
[Eric Auger]
- originates from Joel's [RFC PATCH] arm64: KVM: add irqfd support
http://www.spinics.net/lists/kvm-arm/msg10798.html
- isolates modifications really relat
soon as CONFIG_HAVE_KVM_IRQFD is set.
Signed-off-by: Eric Auger
---
v3 -> v4:
- reword commit message
- explain why we unlock the distributor before calling kvm_notify_acked_irq
- rename is_assigned_irq into has_notifier
- change EOI and injection kvm_debug format string
- remove error lo
CONFIG_HAVE_KVM_IRQCHIP is needed to support IRQ routing (along
with irq_comm.c and irqchip.c usage). This is not the case for
arm/arm64 currently.
This patch unsets the flag for both arm and arm64.
Signed-off-by: Eric Auger
---
arch/arm/kvm/Kconfig | 2 --
arch/arm64/kvm/Kconfig | 1 -
2
the host
must deactivate it.
Signed-off-by: Eric Auger
---
virt/kvm/arm/vgic.c | 20
1 file changed, 20 insertions(+)
diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 21419ac..27394b0 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -2672,6 +2672,13
queueing the IRQ (programming the LR), the pending state is removed
as for edge sensitive IRQs
- an injection of a forwarded IRQ is considered always valid since
coming from the HW and level always is 1.
Signed-off-by: Eric Auger
---
v2 -> v3:
- integration in new vgic_can_sample_irq
- rem
When the VGIC is destroyed it must take care of
- restoring the forwarded IRQs in non forwarded state,
- deactivating the IRQ in case the guest left without doing it
- cleaning nodes of the phys_map rbtree
Signed-off-by: Eric Auger
---
virt/kvm/arm/vgic.c | 36
Add a lock related to the rb tree manipulation. The rb tree can be
searched in one thread (irqfd handler for instance) and map/unmap
may happen in another.
Signed-off-by: Eric Auger
---
v2 -> v3:
re-arrange lock sequence in vgic_map_phys_irq
---
include/kvm/arm_vgic.h | 1 +
virt/kvm/
nux.git
on branch irqfd_integ_v8
The first 2 patch files were previously part of [RFC v2 0/9]
KVM-VFIO IRQ forward control (https://lkml.org/lkml/2014/9/1/347).
Eric Auger (4):
KVM: arm: vgic: fix state machine for forwarded IRQ
KVM: arm: vgic: add forwarded irq rbtree lock
KVM: arm: vgi
Used by KVM-enabled VFIO-based device passthrough support in QEMU.
Signed-off-by: Joel Schopp
Signed-off-by: Eric Auger
---
Extracted from [RFC PATCH] arm64: KVM: add irqfd support
http://www.spinics.net/lists/kvm-arm/msg10798.html
---
arch/arm64/kvm/Kconfig | 1 +
arch/arm64/kvm/Makefile
kvm_arch_forwarded_irq.
Signed-off-by: Eric Auger
---
v2 -> v3:
- rework vfio kvm device documentation
- reword commit message and title
- add subindex in kvm_arch_forwarded_irq to be closer to VFIO API
- forwarding state can only be changed with VFIO IRQ signaling is off
v1 -> v2:
-
is initiated.
- forwarded case: deactivation is initiated by the guest; when it
completes the virtual IRQ, the GIC automatically deactivates the
physical IRQ.
- not forwarded case: the physical IRQ deactivation is handled by the host
Signed-off-by: Eric Auger
---
v2 -> v3:
- renaming
reference counter
to a vfio device,
- kvm_vfio_external_base_device returns a handle to the struct device
of the vfio device.
The KVM-VFIO device uses the VFIO external API device functions.
Signed-off-by: Eric Auger
---
v2 -> v3:
reword the commit message and title
v1 -&
__KVM_HAVE_ARCH_KVM_VFIO_FORWARD is set. When not set those
functions are void.
Signed-off-by: Eric Auger
---
v2 -> v3:
- add API comments in kvm_host.h
- improve the commit message
- create a private kvm_vfio_fwd_irq struct
- fwd_irq_action replaced by a bool and removal of VFIO_IRQ_CLEANUP. This
lat
decrements the reference counter
- vfio_external_base_device returns a handle to the struct device
Signed-off-by: Eric Auger
---
v2 -> v3:
- reword the commit message
v1 -> v2:
- vfio_external_get_base_device renamed into vfio_external_base_device
- vfio_external_get_type removed
---
d
In case the IRQ is forwarded, the VFIO platform IRQ handler does not
need to disable the IRQ anymore.
When setting the IRQ handler we now also test the forwarded state. In
case the IRQ is forwarded we select the edge handler (no automaske).
Signed-off-by: Eric Auger
---
v2 -> v3:
- forwar
From: Kim Phillips
Used by KVM-enabled VFIO-based device passthrough support in QEMU.
Signed-off-by: Kim Phillips
---
arch/arm/kvm/Kconfig | 1 +
arch/arm/kvm/Makefile | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm/kvm/Kconfig b/arch/arm/kvm/Kconfig
index e519a
fio_external_get_base_device renamed into kvm_vfio_external_base_device
- __KVM_HAVE_ARCH_KVM_VFIO renamed into __KVM_HAVE_ARCH_KVM_VFIO_FORWARD
Eric Auger (7):
KVM: arm64: Enable the KVM-VFIO device
VFIO: platform: forwarded state tested when selecting IRQ handler
KVM: kvm-vfio: User API for IRQ forwarding
On 11/24/2014 09:14 AM, Wu, Feng wrote:
>
>
>> -Original Message-----
>> From: Eric Auger [mailto:eric.au...@linaro.org]
>> Sent: Monday, November 24, 2014 2:36 AM
>> To: eric.au...@st.com; eric.au...@linaro.org; christoffer.d...@linaro.org;
>>
On 11/24/2014 10:47 AM, Christoffer Dall wrote:
> On Sun, Nov 23, 2014 at 06:56:57PM +0100, Eric Auger wrote:
>> This patch series enables irqfd on arm and arm64.
>>
>> Irqfd framework enables to inject a virtual IRQ into a guest upon an
>> eventfd trigger. User-side
On 11/24/2014 11:00 AM, Christoffer Dall wrote:
> On Sun, Nov 23, 2014 at 06:56:59PM +0100, Eric Auger wrote:
>> This patch enables irqfd on arm.
>>
>> Both irqfd and resamplefd are supported. Injection is implemented
>> in vgic.c without routing.
>>
>> Thi
On 11/24/2014 11:54 AM, Marc Zyngier wrote:
> On 24/11/14 10:50, Christoffer Dall wrote:
>> On Sun, Nov 23, 2014 at 07:12:49PM +0100, Eric Auger wrote:
>>> This series applies on top of "ARM: Forwarding physical
>>> interrupts to a guest VM" (http://lwn.net/Art
On 11/20/2014 02:42 PM, Paolo Bonzini wrote:
> ia64 does not need them anymore.
>
> Signed-off-by: Paolo Bonzini
> ---
> arch/x86/include/asm/kvm_host.h | 16
> arch/x86/kvm/Makefile | 5 ++---
> {virt => arch/x86}/kvm/ioapic.c | 0
> {virt => arch/x86}/kvm/ioa
On 11/25/2014 11:19 AM, Christoffer Dall wrote:
> [Re-adding cc list]
>
> On Mon, Nov 24, 2014 at 05:42:30PM +0100, Eric Auger wrote:
>> On 11/24/2014 04:47 PM, Christoffer Dall wrote:
>>> On Mon, Nov 24, 2014 at 12:02 PM, Eric Auger wrote:
>>>> On 11/24/2
On 11/25/2014 02:12 PM, Eric Auger wrote:
> On 11/25/2014 11:19 AM, Christoffer Dall wrote:
>> [Re-adding cc list]
>>
>> On Mon, Nov 24, 2014 at 05:42:30PM +0100, Eric Auger wrote:
>>> On 11/24/2014 04:47 PM, Christoffer Dall wrote:
>>>> On Mon, N
On 11/25/2014 05:33 AM, Wu, Feng wrote:
>
>
>> -Original Message-----
>> From: Eric Auger [mailto:eric.au...@linaro.org]
>> Sent: Monday, November 24, 2014 2:36 AM
>> To: eric.au...@st.com; eric.au...@linaro.org; christoffer.d...@linaro.org;
>>
On 11/25/2014 01:23 PM, Feng Wu wrote:
> This patch adds and documents a new attribute
> KVM_DEV_VFIO_DEVICE_POSTING_IRQ in KVM_DEV_VFIO_DEVICE group.
> This new attribute is used for VT-d Posted-Interrupts.
>
> When guest OS changes the interrupt configuration for an
> assigned device, such as, M
On 11/24/2014 09:56 PM, Alex Williamson wrote:
> On Sun, 2014-11-23 at 19:35 +0100, Eric Auger wrote:
>> This patch introduces a new KVM_DEV_VFIO_DEVICE group.
>>
>> This is a new control channel which enables KVM to cooperate with
>> viable VFIO devices.
>>
>
On 11/26/2014 12:31 PM, Christoffer Dall wrote:
> On Tue, Nov 25, 2014 at 02:12:31PM +0100, Eric Auger wrote:
>> On 11/25/2014 11:19 AM, Christoffer Dall wrote:
>>> [Re-adding cc list]
>>>
>>> On Mon, Nov 24, 2014 at 05:42:30PM +0100, Eric Auger wrote:
>>&
On 11/24/2014 10:27 PM, Nikolay Nikolaev wrote:
> This enables compilation of the eventfd feature on ARM.
Hi Nikolay,
why irqchip in the title?
Best Regards
Eric
>
> Signed-off-by: Nikolay Nikolaev
> ---
> arch/arm/kvm/Kconfig |1 +
> arch/arm/kvm/Makefile |2 +-
> 2 files changed, 2
Hi Nikolay,
typo in the title,
On 11/24/2014 10:26 PM, Nikolay Nikolaev wrote:
> This is needed in e.g. ARM vGIC emulation, where the MMIO handling
> depends on the VCPU that does the access.
>
> Signed-off-by: Nikolay Nikolaev
> ---
> arch/ia64/kvm/kvm-ia64.c |4 ++--
> arch/powerpc/kvm
On 11/24/2014 10:26 PM, Nikolay Nikolaev wrote:
> On IO memory abort, try to handle the MMIO access thorugh the KVM
typo
> registered read/write callbacks. This is done by invoking the relevant
> kvm_io_bus_* API.
>
> Signed-off-by: Nikolay Nikolaev
> ---
> arch/arm/kvm/mmio.c | 33 +++
On 11/24/2014 10:26 PM, Nikolay Nikolaev wrote:
> In io_mem_abort remove the call to vgic_handle_mmio. The target is to have
> a single MMIO handling path - that is through the kvm_io_bus_ API.
>
> Register a kvm_io_device in kvm_vgic_init on the whole vGIC MMIO region.
> Both read and write calls
On 11/24/2014 10:26 PM, Nikolay Nikolaev wrote:
> The IOEVENTFD KVM capability is a prerequisite for vhost support,
> and is also used to implement improved interrupt handling in VFIO drivers.
Hi Nikolay
As far as I am aware, irqfd currently is used in vfio context, not
ioeventfd, although they bo
On 11/25/2014 05:10 PM, Alex Williamson wrote:
> On Tue, 2014-11-25 at 16:01 +0100, Eric Auger wrote:
>> On 11/25/2014 01:23 PM, Feng Wu wrote:
>>> This patch adds and documents a new attribute
>>> KVM_DEV_VFIO_DEVICE_POSTING_IRQ in KVM_DEV_VFIO_DEVICE group.
>>&g
Hi Christoffer,
On 11/30/2014 01:47 PM, Christoffer Dall wrote:
> The subject reads strangely, perhaps just:
>
> VFIO: platform: test forward state when selecting IRQ handler
OK
>
> On Sun, Nov 23, 2014 at 07:35:55PM +0100, Eric Auger wrote:
>> In case the IRQ is forwarded,
On 11/30/2014 01:53 PM, Christoffer Dall wrote:
> On Sun, Nov 23, 2014 at 07:35:56PM +0100, Eric Auger wrote:
>> This patch adds and document a new KVM_DEV_VFIO_DEVICE group
>
> documents
OK
>
>> and 2 device attributes: KVM_DEV_VFIO_DEVICE_FORWARD_IRQ,
>> KVM_DEV_
On 11/30/2014 01:14 PM, Christoffer Dall wrote:
> On Sun, Nov 23, 2014 at 07:35:54PM +0100, Eric Auger wrote:
>> Used by KVM-enabled VFIO-based device passthrough support in QEMU.
>>
>> Signed-off-by: Joel Schopp
>> Signed-off-by: Eric Auger
>>
>> ---
>
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