On Thu, Jul 16, 2015 at 05:11:12PM +1000, Paul Mackerras wrote:
This series contains two fixes for the new dynamic micro-threading
code that was added recently for HV-mode KVM on Power servers.
The patches are against Alex Graf's kvm-ppc-queue branch. Please
apply.
agraf,
Any word on these?
Note: RFC must come within [].
On Fri, Jul 17, 2015 at 03:32:03PM +0200, Marc-André Lureau wrote:
While reviewing vhost log code, I found out that log_file is never
set. Note: I haven't tested the change (QEMU doesn't use LOG_FD yet).
Signed-off-by: Marc-André Lureau
On Thu, Jul 16, 2015 at 05:11:12PM +1000, Paul Mackerras wrote:
This series contains two fixes for the new dynamic micro-threading
code that was added recently for HV-mode KVM on Power servers.
The patches are against Alex Graf's kvm-ppc-queue branch. Please
apply.
agraf,
Any word on these?
On 19/07/15 15:05, Pavel Fedin wrote:
Hello!
Believe it or not, we're not only patch reviewing machines, and if you
count the number of pending patches, you'll quickly notice that yours
are basically noise in the grand scheme of things.
So please cut us some slack.
What do you mean
ec53500f kvm: Add VFIO device added a special KVM pseudo-device which is
used to handle any necessary interactions between KVM and VFIO.
Currently that device is built on x86 and ARM, but not powerpc, although
powerpc does support both KVM and VFIO. This makes things awkward in
userspace
To detach tap device automatically from bridge when exiting,
just like the reverse of script does.
Signed-off-by: Fan Du fan...@intel.com
---
tools/kvm/include/kvm/virtio-net.h | 1 +
tools/kvm/virtio/net.c | 28
2 files changed, 29 insertions(+)
diff
vhost kernel driver does not support mutiple queue yet,
Tweak queue number will fail with --net mode=tap,vhost=1,mq=2
as below when lkvm trying to set ring kick fd for queue 2:
VHOST_SET_VRING_KICK failed: No buffer space available
Error on this scenario, and overide with the default one queue
When enable virtio tap mode as root previliege by:
lkvm run --disk linux-0.2.img --kernel bzImage --network virtio
lkvm spits:
[1.981352] loop: module loaded
[1.986039] vda:
Warning: Config tap device error. Are you root?
You have requested a TAP device, but creation of one has failed
Hallo
This changset provide some fix and small enhancement
for kvm tool when I play it with virtio part.
Fan Du (3):
kvm-tool: Introduce downscript option
kvm-tool: Pass address of pointer to ioctl for tap
kvm-tool: Restrict queue number to 1 when vhost on
With everything in place for the ITS emulation add a new option to the
--irqchip parameter to allow the user to specify --irqchip=gicv3-its
to enable the ITS emulation.
This will trigger creating the FDT node and an ITS register frame to
tell the kernel we want ITS emulation in the guest.
To refer to the GIC FDT node, we used to pass the GIC phandle to most
of the functions dealing with FDT nodes.
Since we now have a global phandle reference, use that to refer to the
GIC handle in various places and get rid of the now unneeded parameter
passing.
Signed-off-by: Andre Przywara
Allocating an FDT phandle (a unique identifier) using a static
variable in a static inline function defined in a header file works
only if all users are in the same source file. So trying to allocate
a handle from two different compilation units fails.
Introduce global phandle allocation and
For ITS emulation we need the device ID along with the MSI payload
and doorbell address to identify an MSI, so we need to put it in the
GSI IRQ routing table too.
There is a per-VM capability by which the kernel signals the need for
a device ID, so check this and put the device ID into the routing
This patch is preliminary and updates the headers from a kernel with
ITS emulation support. It should be replaced by a proper header
update once ITS support is upstream.
Contains a hack to support compiling on ARM, too.
Signed-off-by: Andre Przywara andre.przyw...@arm.com
---
The GICv3 ITS expects a separate 64K page to hold ITS registers.
Add a function to reserve such a page in the guest's I/O memory and
use that for the ITS vGIC type.
Signed-off-by: Andre Przywara andre.przyw...@arm.com
---
arm/gic.c| 36
Since we soon start using GSI routing on ARM platforms too, we have
to setup the initial SPI routing table. Before the first call to
KVM_SET_GSI_ROUTING, the kernel holds this table internally, but this
is overwritten with the ioctl, so we have to explicitly set it up
here.
The routing is actually
This patch is preliminary and updates the headers from a kernel with
extended IRQ routing support (for ARM). It should be replaced by a
proper header update once IRQ routing support is upstream.
Signed-off-by: Andre Przywara andre.przyw...@arm.com
---
include/linux/kvm.h | 5 -
1 file
The ITS emulation requires a unique device ID to be passed along the
MSI payload when kvmtool wants to trigger an MSI in the guest.
According to the proposed changes to the interface add the PCI
bus/device/function triple to the structure passed with the ioctl.
Check the respective capability
The current IRQ routing code in x86/irq.c is mostly implementing a
generic KVM interface which other architectures may use too.
Move the code to set up an MSI route into the generic irq.c file and
guard it with the KVM_CAP_IRQ_ROUTING capability to return an error
if the kernel does not support
KVM capabilities can be per-VM, in this case the ioctl should be
issued on the VM file descriptor, not on the system fd.
Since this feature is guarded by a (system) capability itself, wrap
the call into a function of its own.
Signed-off-by: Andre Przywara andre.przyw...@arm.com
---
When we set up GSI routing to map MSIs to KVM's GSI numbers, we
write the current device's MSI setup into the kernel routing table.
However the device driver in the guest can use PCI configuration space
accesses to change the MSI configuration (address and/or payload data).
Whenever this happens
Hi,
this series teaches kvmtool how to support KVM's ITS emulation. Also
(as this is somewhat related and has been co-developed) it enables GSI
routing for ARM/ARM64, which allows IRQFDs to be used, for instance
to use vhost_net. At the moment this is dependent on the guest
using the ITS
The ARM GICv3 ITS requires a separate device tree node to describe
the ITS. Add this as a child to the GIC interrupt controller node
to let a guest discover and use the ITS if the user requests it.
Since we now need to specify #address-cells for the GIC node, we
have to add two zeroes to the
Currently we deny any VHOST_* functionality if the architecture
supports guests with different endianness than the host. Most of the
time even on those architectures the endianness of guest and host are
the same, though, so we are denying the glory of VHOST needlessly.
Switch from compile time
On 17.07.2015 18:50, Will Deacon wrote:
On Fri, Jul 17, 2015 at 05:02:13PM +0100, Andre Przywara wrote:
clang by default doesn't seem to like printf calls with non-literal
format strings.
Add the proper pragma to disable this warning in the report function
to make kvmtool compile with clang.
On 15/07/15 10:52, Konstantin Khlebnikov wrote:
This code is used only when CONFIG_PREEMPT=n and only in non-atomic context:
xen_in_preemptible_hcall is set only in privcmd_ioctl_hypercall().
Thus preempt_count is zero and should_resched() is equal to need_resched().
Applied to for-linus-4.3,
Hi,
This changset provide some fix and small enhancement
for kvm tool when I play it with virtio part.
have you seen the new kvmtool repository Will created, which is a
stand-alone version outside of the Linux tree?
https://git.kernel.org/cgit/linux/kernel/git/will/kvmtool.git/
It seems
Hi,
On 20/07/15 10:28, Fan Du wrote:
To detach tap device automatically from bridge when exiting,
just like the reverse of script does.
Signed-off-by: Fan Du fan...@intel.com
---
tools/kvm/include/kvm/virtio-net.h | 1 +
tools/kvm/virtio/net.c | 28
Hi Claudio,
On 20/07/15 15:28, Claudio Fontana wrote:
On 17.07.2015 18:50, Will Deacon wrote:
On Fri, Jul 17, 2015 at 05:02:13PM +0100, Andre Przywara wrote:
clang by default doesn't seem to like printf calls with non-literal
format strings.
Add the proper pragma to disable this warning in
On 07/17/2015 05:46 AM, Thomas Huth wrote:
The EPOW interrupt handler uses rtas_get_sensor(), which in turn
uses rtas_busy_delay() to wait for RTAS becoming ready in case it
is necessary. But rtas_busy_delay() is annotated with might_sleep()
and thus may not be used by interrupts handlers like
On 2015/7/17 22:30, Christoffer Dall wrote:
On Mon, Jul 06, 2015 at 10:17:37AM +0800, shannon.z...@linaro.org wrote:
From: Shannon Zhao shannon.z...@linaro.org
When we use tools like perf on host, perf passes the event type and the
id in this type category to kernel, then kernel will map
On 2015/7/17 18:21, Christoffer Dall wrote:
On Fri, Jul 17, 2015 at 04:45:44PM +0800, Shannon Zhao wrote:
On 2015/7/17 3:55, Christoffer Dall wrote:
On Mon, Jul 06, 2015 at 10:17:34AM +0800, shannon.z...@linaro.org wrote:
From: Shannon Zhao shannon.z...@linaro.org
Add reset handler which
This changset provide some fix and small enhancement
for kvm tool when I play it for the firt time.
Changelog:
v2:
- Rebase with Will kvmtool.git tree[1]
- Drop patch2 from v1, as commit f83dc816a9c7 has already fix it
[1]: https://git.kernel.org/pub/scm/linux/kernel/git/will/kvmtool.git
To detach tap device automatically from bridge when exiting,
just like what the reverse of script does.
Signed-off-by: Fan Du fan...@intel.com
---
include/kvm/virtio-net.h | 1 +
virtio/net.c | 50 +---
2 files changed, 40 insertions(+),
vhost kernel driver does not support mutiple queue yet,
Tweak queue number will fail with --net mode=tap,vhost=1,mq=2
as below when lkvm trying to set ring kick fd for queue 2:
VHOST_SET_VRING_KICK failed: No buffer space available
Error on this scenario, and overide with the default one queue
-Original Message-
From: Andre Przywara [mailto:andre.przyw...@arm.com]
Sent: Monday, July 20, 2015 10:43 PM
To: Du, Fan
Cc: kvm@vger.kernel.org; penb...@kernel.org; Will Deacon; Marc Zyngier
Subject: Re: [PATCH 0/3] Fixes for kvmtool virtio-net part
Hi,
This changset provide some fix
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