On Mon, Dec 11, 2017 at 10:56:33AM +0100, Vitaly Kuznetsov wrote:
> Roman Kagan writes:
> > On Fri, Dec 08, 2017 at 11:49:57AM +0100, Vitaly Kuznetsov wrote:
> >> +void register_hv_tsc_update(void (*cb)(void))
> >> +{
> >
> > The function name seems
On Fri, Dec 08, 2017 at 11:49:57AM +0100, Vitaly Kuznetsov wrote:
> Hyper-V supports Live Migration notification. This is supposed to be used
> in conjunction with TSC emulation: when we are migrated to a host with
> different TSC frequency for some short period host emulates our accesses
> to TSC
On Fri, Dec 08, 2017 at 11:50:00AM +0100, Vitaly Kuznetsov wrote:
> When we run nested KVM on Hyper-V guests we need to update masterclocks for
> all guests when L1 migrates to a host with different TSC frequency.
> Implement the procedure in the following way:
> - Pause all guests.
> - Tell our ho
On Mon, Jan 02, 2017 at 09:19:57AM +0100, Paolo Bonzini wrote:
> On 28/12/2016 18:09, Roman Kagan wrote:
> > Am I correct assuming that QEMU is currently the only user of
> > arch/x86/include/uapi/asm/hyperv.h?
> >
> > Then I think we're fine withdrawing it
On Mon, Jan 09, 2017 at 12:40:48AM -0800, h...@zytor.com wrote:
> On January 9, 2017 12:32:23 AM PST, Roman Kagan wrote:
> >On Mon, Jan 02, 2017 at 09:19:57AM +0100, Paolo Bonzini wrote:
> >> On 28/12/2016 18:09, Roman Kagan wrote:
> >> > Am I correct assuming that Q
On Wed, Dec 21, 2016 at 07:54:11PM +, KY Srinivasan wrote:
>
>
> > -Original Message-
> > From: Stephen Hemminger [mailto:step...@networkplumber.org]
> > Sent: Wednesday, December 21, 2016 10:03 AM
> > To: Christoph Hellwig
> > Cc: Paolo Bonzini ;
[ Sorry for such a slow reply; flu and office relocation knocked me out
for a while ]
On Wed, Dec 21, 2016 at 06:00:17PM +, KY Srinivasan wrote:
> > -Original Message-
> > From: Roman Kagan [mailto:rka...@virtuozzo.com]
> > Sent: Tuesday, December 20, 2016 7:56 AM
&
On Wed, Dec 21, 2016 at 06:26:54AM -0800, Christoph Hellwig wrote:
> On Wed, Dec 21, 2016 at 03:59:20PM +0300, Roman Kagan wrote:
> > That's fine by me.
> >
> > I guess the series should then start with a complete move
> > arch/x86/include/uapi/asm/hype
On Wed, Dec 21, 2016 at 01:00:44PM +0100, Olaf Hering wrote:
> On Tue, Dec 20, Roman Kagan wrote:
>
> Reverting commit 22356585712d ("staging: hv: use sync_bitops when
> interacting with the hypervisor") is save because ...
>
> > - sy
On Wed, Dec 21, 2016 at 04:18:58AM -0800, Christoph Hellwig wrote:
> On Wed, Dec 21, 2016 at 09:29:39AM +0300, Roman Kagan wrote:
> > QEMU in particular. We're planning to implement VMBus devices in QEMU
> > and would like to have the definitions shared with the Linux guest
&
On Tue, Dec 20, 2016 at 09:24:53AM -0800, Stephen Hemminger wrote:
> On Tue, 20 Dec 2016 18:55:49 +0300
> Roman Kagan wrote:
>
> > Move definitions related to the Hyper-V SynIC event flags to a header
> > where they can be consumed by userspace.
> >
> > While
On Tue, Dec 20, 2016 at 09:25:43AM -0800, Stephen Hemminger wrote:
> On Tue, 20 Dec 2016 18:55:59 +0300
> Roman Kagan wrote:
>
> > Userspace will need them too.
> >
> > Signed-off-by: Roman Kagan
>
> What userspace? I am worried about creating more stable API
On Tue, Dec 20, 2016 at 08:57:28PM +, KY Srinivasan wrote:
>
>
> > -Original Message-
> > From: Roman Kagan [mailto:rka...@virtuozzo.com]
> > Sent: Tuesday, December 20, 2016 7:56 AM
> > To: Paolo Bonzini ; Radim Krčmář
> > ; KY Srinivasan ;
Move structures for monitored notifications to the uapi header for
userspace to be able to consume. Also observe that hv_monitor_parameter
is by definition the same as hv_input_signal_event so use the latter and
nuke the former.
Signed-off-by: Roman Kagan
---
arch/x86/include/uapi/asm/hyperv.h
There's no need in GFP_ATOMIC when initializing the driver state.
While at this, also rely on free_page() to take null argument.
Signed-off-by: Roman Kagan
---
drivers/hv/hv.c | 23 ++-
1 file changed, 10 insertions(+), 13 deletions(-)
diff --git a/drivers/hv/h
Consolidate the guest-side and kvm-side definitions for Hyper-V TSC
reference page.
While at this, rewrite read_hv_clock_tsc using the existing helpers.
Signed-off-by: Roman Kagan
---
arch/x86/include/asm/kvm_host.h| 2 +-
arch/x86/include/uapi/asm/hyperv.h | 4 +--
drivers/hv
Signed-off-by: Roman Kagan
---
drivers/hv/channel.c| 8 +++-
drivers/hv/connection.c | 9 +++--
2 files changed, 6 insertions(+), 11 deletions(-)
diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c
index 5fb4c6d..f9df275 100644
--- a/drivers/hv/channel.c
+++ b/drivers/hv
Use the definitions already present in the uapi header throughout the
guest driver, too.
Signed-off-by: Roman Kagan
---
drivers/hv/hyperv_vmbus.h | 11 ---
drivers/hv/vmbus_drv.c| 6 +++---
2 files changed, 3 insertions(+), 14 deletions(-)
diff --git a/drivers/hv/hyperv_vmbus.h b
Use the definitions already present in the uapi header. Besides, drop
all bitfields for the msr values and use bitwise operations instead.
Signed-off-by: Roman Kagan
---
drivers/hv/hyperv_vmbus.h | 88 ---
drivers/hv/hv.c | 150
Give a name to the constant (1) already used in the code.
Signed-off-by: Roman Kagan
---
arch/x86/include/uapi/asm/hyperv.h | 2 ++
drivers/hv/connection.c| 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/uapi/asm/hyperv.h
b/arch/x86/include
Use the definitions already present in the uapi header throughout the
guest driver, too.
Signed-off-by: Roman Kagan
---
drivers/hv/hyperv_vmbus.h | 19 ---
drivers/hv/hv.c | 6 +++---
2 files changed, 3 insertions(+), 22 deletions(-)
diff --git a/drivers/hv
This brings more symmetry in the API.
The downside is that this changes the userspace-visible structure.
Hopefully no userspace code had a chance to use it yet.
Signed-off-by: Roman Kagan
---
arch/x86/include/uapi/asm/hyperv.h | 32 +---
drivers/hv/hyperv_vmbus.h
Signed-off-by: Roman Kagan
---
drivers/hv/hyperv_vmbus.h | 44
drivers/hv/hv.c | 39 +++
2 files changed, 39 insertions(+), 44 deletions(-)
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv
Userspace will need them too.
Signed-off-by: Roman Kagan
---
arch/x86/include/uapi/asm/hyperv.h | 9 +
drivers/hv/hyperv_vmbus.h | 10 --
2 files changed, 9 insertions(+), 10 deletions(-)
diff --git a/arch/x86/include/uapi/asm/hyperv.h
b/arch/x86/include/uapi/asm
None of these is used in the kernel.
Signed-off-by: Roman Kagan
---
drivers/hv/hyperv_vmbus.h | 119 --
1 file changed, 119 deletions(-)
diff --git a/drivers/hv/hyperv_vmbus.h b/drivers/hv/hyperv_vmbus.h
index fcb5d91..8ce6d64 100644
--- a/drivers/hv
Make hypercall and tsc page allocation similar to the rest of the
Hyper-V shared memory stuff instead of vmalloc-ing them.
Also perform cleanup unconditionally which is safe.
TODO: the skipping of free in case of a crash is probably no longer
necessary, too.
Signed-off-by: Roman Kagan
Move definitions related to the Hyper-V SynIC event flags to a header
where they can be consumed by userspace.
While doing so, also clean up their use by switching to standard bitops
and struct-based dereferencing. The latter is also done for message
pages.
Signed-off-by: Roman Kagan
---
arch
appear
reasonable to do at the same time.
The most controversial is the last patch which modifies the stuff
already published in the uapi header, in the hope that no userspace
applications have started relying on it; I'm ok dropping it if this is
unacceptable.
Roman Kagan (15):
hyperv: consol
Expose structures used for PostMessage and SignalEvent hypercalls in a
uapi header. While doing so, simplify alignment handling and drop
unnecessary complications in the connectionid field.
Signed-off-by: Roman Kagan
---
arch/x86/include/uapi/asm/hyperv.h | 18 ++
drivers/hv
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