On 27 March 2015 at 01:02, Ard Biesheuvel ard.biesheu...@linaro.org wrote:
On 26 March 2015 at 09:09, Riku Voipio riku.voi...@linaro.org wrote:
On 25 March 2015 at 21:32, Ard Biesheuvel ard.biesheu...@linaro.org wrote:
On 25 March 2015 at 17:14, Ard Biesheuvel ard.biesheu...@linaro.org wrote:
Andrew Jones drjo...@redhat.com writes:
On Tue, Mar 31, 2015 at 04:08:07PM +0100, Alex Bennée wrote:
When we are using the hardware registers for guest debug we need to deal
with the guests access to them. There is already a mechanism for dealing
with these accesses so we build on top of
On Tue, Mar 31, 2015 at 04:08:01PM +0100, Alex Bennée wrote:
This commit defines the API headers for guest debugging. There are two
architecture specific debug structures:
- kvm_guest_debug_arch, allows us to pass in HW debug registers
- kvm_debug_exit_arch, signals the exact debug exit
On 13/04/15 11:04, Christoffer Dall wrote:
On Fri, Apr 10, 2015 at 05:52:05PM +0100, Andre Przywara wrote:
Hi Christopher,
On 10/04/15 16:29, Christopher Covington wrote:
Hi Andre,
On 04/10/2015 11:17 AM, Andre Przywara wrote:
When userland injects a SPI via the KVM_IRQ_LINE ioctl we
On Mon, Apr 13, 2015 at 11:21:20AM +0100, Marc Zyngier wrote:
On 13/04/15 11:04, Christoffer Dall wrote:
On Fri, Apr 10, 2015 at 05:52:05PM +0100, Andre Przywara wrote:
Hi Christopher,
On 10/04/15 16:29, Christopher Covington wrote:
Hi Andre,
On 04/10/2015 11:17 AM, Andre Przywara
On Mon, Apr 13, 2015 at 11:46:36AM +0100, Mark Rutland wrote:
Hi,
Otherwise the is_guest() function would be many if-else statements
trying to determine the type of guest it is before it even knows that
it is a guest.
It's worth noting that to some extent this may always be
irqfd/arm curently does not support routing. kvm_irq_map_gsi is
supposed to return all the routing entries associated with the
provided gsi and return the number of those entries. We should
return 0 at this point.
Signed-off-by: Eric Auger eric.au...@linaro.org
---
virt/kvm/arm/vgic.c | 2 +-
1
On 13/04/15 13:57, Christoffer Dall wrote:
On Thu, Apr 09, 2015 at 05:53:59PM +0100, Marc Zyngier wrote:
The world switch spends quite some time dealing with the FP/SIMD
registers, as the state is quite sizeable (32 128bit registers,
plus some crumbs on the side). We save/restore them on each
On Mon, Apr 13, 2015 at 04:36:23PM +0200, Christoffer Dall wrote:
[...]
+
+/**
+ * kvm_arch_setup_debug - set-up debug related stuff
nit: I think you want set up when it's a verb.
+ *
+ * @vcpu: the vcpu pointer
+ *
+ * This is called before each entry in to the hypervisor to
On Thu, Apr 09, 2015 at 05:53:59PM +0100, Marc Zyngier wrote:
The world switch spends quite some time dealing with the FP/SIMD
registers, as the state is quite sizeable (32 128bit registers,
plus some crumbs on the side). We save/restore them on each
entry/exit, so that both the host and the
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.
The patch introduces 2 attributes for this group:
KVM_DEV_VFIO_DEVICE_FORWARD_IRQ, KVM_DEV_VFIO_DEVICE_UNFORWARD_IRQ.
Their purpose is to turn a VFIO
This patch sets __KVM_HAVE_ARCH_KVM_VFIO_FORWARD and implements
kvm_arch_set_forward for ARM/ARM64.
As a result the KVM-VFIO device now allows to forward/unforward a
VFIO device IRQ on ARM.
kvm_arch_set_forward and kvm_arch_unset_forward mostly take care of
VGIC programming: physical IRQ/guest
The kvm_vcpu_arch pause field is renamed into power_off to prepare
for the introduction of a new pause field.
Signed-off-by: Eric Auger eric.au...@linaro.org
v4 - v5:
- fix compilation issue on arm64 (add power_off field in kvm_host.h)
---
arch/arm/include/asm/kvm_host.h | 4 ++--
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 vfio_irq_handler.
Signed-off-by: Eric Auger eric.au...@linaro.org
---
v3 - v4:
-
The VFIO external user API is enriched with 3 new functions that
allows a kernel user external to VFIO to retrieve some information
from a VFIO device.
- vfio_device_get_external_user enables to get a vfio device from
its fd and increments its reference counter
- vfio_device_put_external_user
A single handler now is registered whatever the use case: automasked
or not. A function pointer is set according to the wished behavior
and the handler calls this function.
The irq lock is taken/released in the root handler. eventfd_signal can
be called in regions not allowed to sleep.
This patch adds the implementation for the 3 external callbacks of
vfio_device_external_ops struct, namely active, is_active,
set_automasked. Also vfio_device_ops and vfio_device_external_ops are
set accordingly.
Signed-off-by: Eric Auger eric.au...@linaro.org
---
v6: creation
---
Introduces 3 new external functions aimed at doing actions
on VFIO devices:
- mask VFIO IRQ
- get the active status of VFIO IRQ (active at interrupt
controller level or masked by the level-sensitive automasking).
- change the automasked property and switch the IRQ handler
(between automasked/
New bus callbacks are introduced. They correspond to external
functions. To avoid messing up the main vfio_device_ops
struct, a new vfio_device_external_ops struct is introduced.
Signed-off-by: Eric Auger eric.au...@linaro.org
---
v6: creation
---
include/linux/vfio.h | 18 ++
From: Kim Phillips kim.phill...@linaro.org
The KVM-VFIO device is used by the QEMU VFIO device. It is used to
record the list of in-use VFIO groups so that KVM can manipulate
them. With this series, it will also be used to record the forwarded
IRQs.
Signed-off-by: Kim Phillips
This patch adds and documents a new KVM_DEV_VFIO_DEVICE group
and 2 device attributes: KVM_DEV_VFIO_DEVICE_FORWARD_IRQ,
KVM_DEV_VFIO_DEVICE_UNFORWARD_IRQ. The purpose is to be able
to set a VFIO device IRQ as forwarded or not forwarded.
the command takes as argument a handle to a new struct named
Provide wrapper functions that allow KVM-VFIO device code to
interact with a vfio device:
- kvm_vfio_device_get_external_user gets a handle to a struct
vfio_device from the vfio device file descriptor and increments
its reference counter,
- kvm_vfio_device_put_external_user decrements the
Those 3 new wrapper functions call the respective VFIO external
functions.
Signed-off-by: Eric Auger eric.au...@linaro.org
---
- v4: creation
- v5 - v6:
x vfio.h modifications duly moved in VFIO: platform: add
vfio_external_{mask|is_active|set_automasked}
x all external functions use
Christoffer Dall christoffer.d...@linaro.org writes:
On Tue, Mar 31, 2015 at 04:08:03PM +0100, Alex Bennée wrote:
This is a precursor for later patches which will need to do more to
setup debug state before entering the hyp.S switch code. The existing
functionality for setting mdcr_el2 has
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