[v3] hyper-v: Introduce TSC page for root partition

[PATCH v3 0/4] hyper-v: Introduce TSC page for root partition

Posted by Stanislav Kinsburskii 3 years, 5 months ago

This series does some cleanup and precursor changes to the hyper-v clock
source and introduces support for TSC page based clock in root partition.

Hyper-V root partition requires kernel to map the page, specified by the
hypervisor (instead of provide the PFN to the hypervisor like it's done in
guest partition).

v3:
1. Rebased on top of the fix to support arbitrary TSC page size by Anirudh
2. Fixed TSC physical page when remapping in root partition.

v2:
1. Addressed all the comments to the commit messages.
2. TSC page in root partition is now remapped based on size of the tsc_pg
variable.

The following series implements...

---

Stanislav Kinsburskiy (4):
      drivers/clocksource/hyper-v: Introduce a pointer to TSC page
      drivers/clocksource/hyper-v: Introduce TSC PFN getter
      drivers/clocksource/hyper-v: Use TSC PFN getter to map vvar page
      drivers/clocksource/hyper-v: Add TSC page support for root partition


 arch/x86/entry/vdso/vma.c          |    7 ++---
 arch/x86/hyperv/hv_init.c          |    2 +
 drivers/clocksource/hyperv_timer.c |   55 +++++++++++++++++++++++++++---------
 include/clocksource/hyperv_timer.h |    7 +++++
 4 files changed, 53 insertions(+), 18 deletions(-)

Re: [PATCH v3 0/4] hyper-v: Introduce TSC page for root partition

Posted by Wei Liu 3 years, 4 months ago

On Thu, Nov 03, 2022 at 05:58:43PM +0000, Stanislav Kinsburskii wrote:
> 
> Stanislav Kinsburskiy (4):
>       drivers/clocksource/hyper-v: Introduce a pointer to TSC page
>       drivers/clocksource/hyper-v: Introduce TSC PFN getter
>       drivers/clocksource/hyper-v: Use TSC PFN getter to map vvar page
>       drivers/clocksource/hyper-v: Add TSC page support for root partition

Applied to hyeprv-next. Thanks.

Re: [PATCH v3 0/4] hyper-v: Introduce TSC page for root partition

Posted by Daniel Lezcano 3 years, 4 months ago

On 14/11/2022 14:54, Wei Liu wrote:
> On Thu, Nov 03, 2022 at 05:58:43PM +0000, Stanislav Kinsburskii wrote:
>>
>> Stanislav Kinsburskiy (4):
>>        drivers/clocksource/hyper-v: Introduce a pointer to TSC page
>>        drivers/clocksource/hyper-v: Introduce TSC PFN getter
>>        drivers/clocksource/hyper-v: Use TSC PFN getter to map vvar page
>>        drivers/clocksource/hyper-v: Add TSC page support for root partition
> 
> Applied to hyeprv-next. Thanks.

The series should have go through the clocksource/timer tree or at least 
should have specified the targeted tree for an Acked-by from the 
clocksource maintainers.

In the future, please follow the process

That said,

Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>

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Re: [PATCH v3 0/4] hyper-v: Introduce TSC page for root partition

Posted by Wei Liu 3 years, 4 months ago

On Fri, Dec 02, 2022 at 01:55:35PM +0100, Daniel Lezcano wrote:
> On 14/11/2022 14:54, Wei Liu wrote:
> > On Thu, Nov 03, 2022 at 05:58:43PM +0000, Stanislav Kinsburskii wrote:
> > > 
> > > Stanislav Kinsburskiy (4):
> > >        drivers/clocksource/hyper-v: Introduce a pointer to TSC page
> > >        drivers/clocksource/hyper-v: Introduce TSC PFN getter
> > >        drivers/clocksource/hyper-v: Use TSC PFN getter to map vvar page
> > >        drivers/clocksource/hyper-v: Add TSC page support for root partition
> > 
> > Applied to hyeprv-next. Thanks.
> 
> The series should have go through the clocksource/timer tree or at least
> should have specified the targeted tree for an Acked-by from the clocksource
> maintainers.
> 
> In the future, please follow the process

Sure thing.

> 
> That said,
> 
> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>

Thank you very much!

Wei.

Re: [PATCH v3 0/4] hyper-v: Introduce TSC page for root partition

Posted by Stanislav Kinsburskii 3 years, 4 months ago

On Fri, Dec 02, 2022 at 01:55:35PM +0100, Daniel Lezcano wrote:
> On 14/11/2022 14:54, Wei Liu wrote:
> > On Thu, Nov 03, 2022 at 05:58:43PM +0000, Stanislav Kinsburskii wrote:
> > > 
> > > Stanislav Kinsburskiy (4):
> > >        drivers/clocksource/hyper-v: Introduce a pointer to TSC page
> > >        drivers/clocksource/hyper-v: Introduce TSC PFN getter
> > >        drivers/clocksource/hyper-v: Use TSC PFN getter to map vvar page
> > >        drivers/clocksource/hyper-v: Add TSC page support for root partition
> > 
> > Applied to hyeprv-next. Thanks.
> 
> The series should have go through the clocksource/timer tree or at least
> should have specified the targeted tree for an Acked-by from the clocksource
> maintainers.
> 
> In the future, please follow the process
> 

I will.
Thank you for your feedback and aknowledgement, Daniel.

> That said,
> 
> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
> 
> -- 
> <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs
> 
> Follow Linaro:  <http://www.facebook.com/pages/Linaro> Facebook |
> <http://twitter.com/#!/linaroorg> Twitter |
> <http://www.linaro.org/linaro-blog/> Blog