Hi Alex,
On 2020/12/15 8:04, Alex Williamson wrote:
> On Thu, 10 Dec 2020 15:34:22 +0800
> Keqian Zhu wrote:
>
>> When we pin or detach a group which is not dirty tracking capable,
>> we will try to promote pinned_scope of vfio_iommu.
>>
>> If we succeed to do so, vfio only report pinned_scope
On 2020/12/11 3:16, Alex Williamson wrote:
> On Thu, 10 Dec 2020 15:34:19 +0800
> Keqian Zhu wrote:
>
>> Currently we do not clear added dirty bit of bitmap when unwind
>> pin, so if pin failed at halfway, we set unnecessary dirty bit
>> in bitmap. Clearing added dirty bit when unwind pin,
Hi Robin,
On 2020/12/7 20:46, Robin Murphy wrote:
> On 2020-12-07 12:15, zhukeqian wrote:
>> Hi,
>>
>> On 2020/12/7 20:05, Will Deacon wrote:
>>> On Mon, Dec 07, 2020 at 12:01:09PM +, Robin Murphy wrote:
>>>> On 2020-12-05 08:29, Keqian Zhu wrote:
&g
Hi,
On 2020/12/7 20:05, Will Deacon wrote:
> On Mon, Dec 07, 2020 at 12:01:09PM +, Robin Murphy wrote:
>> On 2020-12-05 08:29, Keqian Zhu wrote:
>>> ... then we have more chance to detect wrong code logic.
>>
>> I don't follow that justification - it's still the same check with the same
>>
Hi Will,
On 2020/12/7 18:59, Will Deacon wrote:
> On Sat, Dec 05, 2020 at 04:29:57PM +0800, Keqian Zhu wrote:
>> ... then we have more chance to detect wrong code logic.
>
> This could do with being a bit more explicit. Something like:
>
> Although handling a mapping request with no
Hi Marc,
On 2020/12/3 22:58, Marc Zyngier wrote:
> On 2020-08-18 04:28, Keqian Zhu wrote:
>> In commit 0ea415390cd3 ("clocksource/arm_arch_timer: Use
>> arch_timer_read_counter
>> to access stable counters"), we separate stable and normal count reader to
>> omit
>> unnecessary overhead on
Hi Marc,
On 2020/12/3 22:57, Marc Zyngier wrote:
> On 2020-08-18 04:28, Keqian Zhu wrote:
>> ARM virtual counter supports event stream, it can only trigger an event
>> when the trigger bit (the value of CNTKCTL_EL1.EVNTI) of CNTVCT_EL0 changes,
>> so the actual period of event stream is
On 2020/12/3 23:04, Marc Zyngier wrote:
> On 2020-08-17 12:07, Keqian Zhu wrote:
>> Rename PV_FEATURES to PV_TIME_FEATURES.
>>
>> Signed-off-by: Keqian Zhu
>> Reviewed-by: Andrew Jones
>> Reviewed-by: Steven Price
>> ---
>> Documentation/virt/kvm/arm/pvtime.rst | 6 +++---
>> 1 file
Hi Marc,
Found that this bugfix series is not applied for now.
Does it need some modification? Wish you can pick it up :-)
Thanks,
Keqian
On 2020/8/18 11:28, Keqian Zhu wrote:
> change log:
>
> v2:
> - Do not revert commit 0ea415390cd3, fix it instead.
> - Correct the tags of second patch.
>
Hi Marc,
Found that this series is not applied for now.
Does it need some modification? Wish you can pick it up :-)
Thanks,
Keqian
On 2020/8/17 19:07, Keqian Zhu wrote:
> During picking up pvtime LPT support for arm64, I do some trivial fixes for
> pvtime ST.
>
> change log:
>
> v2:
> - Add
Hi Marc and Steven,
On 2020/9/2 18:09, Steven Price wrote:
> Hi Marc,
>
> Sorry for the slow response, I've been on holiday.
>
> On 22/08/2020 11:31, Marc Zyngier wrote:
>> Hi Steven,
>>
>> On Wed, 19 Aug 2020 09:54:40 +0100,
>> Steven Price wrote:
>>>
>>> On 18/08/2020 15:41, Marc Zyngier
On 2020/8/19 16:54, Steven Price wrote:
> On 18/08/2020 15:41, Marc Zyngier wrote:
>> On 2020-08-17 09:41, Keqian Zhu wrote:
>>> Hi all,
>>>
>>> This patch series picks up the LPT pvtime feature originally developed
>>> by Steven Price: https://patchwork.kernel.org/cover/10726499/
>>>
>>>
Hi Marc,
On 2020/8/17 20:56, Marc Zyngier wrote:
> On 2020-08-17 13:24, Keqian Zhu wrote:
>> ARM virtual counter supports event stream, it can only trigger an event
>> when the trigger bit (the value of CNTKCTL_EL1.EVNTI) of CNTVCT_EL0 changes,
>> so the actual period of event stream is
Hi Marc,
On 2020/8/17 20:52, Marc Zyngier wrote:
> On 2020-08-17 13:24, Keqian Zhu wrote:
>> In commit 0ea415390cd3 (clocksource/arm_arch_timer: Use
>> arch_timer_read_counter
>> to access stable counters), we separate stable and normal count reader.
>> Actually
>> the stable reader can
Hi Steven,
On 2020/8/17 17:49, Steven Price wrote:
> On 17/08/2020 09:43, zhukeqian wrote:
>> Hi Marc,
>>
[...]
>>>
>>> It is pretty unfortunate that PV time has turned into such a train wreck,
>>> but that's what we have now, and it has to stay
Hi Andrew,
On 2020/8/17 16:47, Andrew Jones wrote:
> On Mon, Aug 17, 2020 at 11:37:27AM +0800, Keqian Zhu wrote:
>> Rename PV_FEATURES tp PV_TIME_FEATURES
>>
>> Signed-off-by: Keqian Zhu
>> ---
>> Documentation/virt/kvm/arm/pvtime.rst | 6 +++---
>> 1 file changed, 3 insertions(+), 3
Hi Marc,
On 2020/8/17 15:39, Marc Zyngier wrote:
> On 2020-08-17 04:37, Keqian Zhu wrote:
>> ARM64 PV-time ST is configured by userspace through vCPU attribute,
>> and KVM_DEV_TYPE_ARM_PV_TIME is unused.
>>
>> Signed-off-by: Keqian Zhu
>> ---
>> include/uapi/linux/kvm.h | 2 --
>>
Hi Steven,
On 2020/7/27 18:48, Steven Price wrote:
> On 21/07/2020 04:26, zhukeqian wrote:
>> Hi Steven,
>
> Hi Keqian,
>
>> On 2019/8/2 22:50, Steven Price wrote:
>>> This series add support for paravirtualized time for arm64 guests and
>>> KVM
Hi Marc,
On 2020/7/28 18:16, Marc Zyngier wrote:
> On 2020-07-17 10:21, Keqian Zhu wrote:
>> ARM virtual counter supports event stream. It can only trigger an event
>> when the trigger bit of CNTVCT_EL0 changes from 0 to 1 (or from 1 to 0),
>> so the actual period of event stream is 2 ^
Friendly ping.
Is this an effective bugfix?
On 2020/7/17 17:21, Keqian Zhu wrote:
> ARM virtual counter supports event stream. It can only trigger an event
> when the trigger bit of CNTVCT_EL0 changes from 0 to 1 (or from 1 to 0),
> so the actual period of event stream is 2 ^ (cntkctl_evnti + 1).
Hi Steven,
On 2019/8/2 22:50, Steven Price wrote:
> This series add support for paravirtualized time for arm64 guests and
> KVM hosts following the specification in Arm's document DEN 0057A:
>
> https://developer.arm.com/docs/den0057/a
>
> It implements support for stolen time, allowing the
Hi,
On 2020/7/2 21:55, Keqian Zhu wrote:
> For that using arm64 DBM to log dirty pages has the side effect
> of long time dirty log sync, we should give userspace opportunity
> to enable or disable this feature, to realize some policy.
>
> This feature is disabled by default.
>
> Signed-off-by:
Hi Steven,
On 2020/7/1 19:28, Steven Price wrote:
> Hi,
>
> On 16/06/2020 10:35, Keqian Zhu wrote:
>> kvm_set_pte is called to replace a target PTE with a desired one.
>> We always do this without changing the desired one, but if dirty
>> status set by hardware is coverred, let caller know it.
Hi,
On 2020/6/16 17:35, Keqian Zhu wrote:
> This patch series add support for stage2 hardware DBM, and it is only
> used for dirty log for now.
>
> It works well under some migration test cases, including VM with 4K
> pages or 2M THP. I checked the SHA256 hash digest of all memory and
> they
Hi Marc,
On 2020/5/31 0:31, Marc Zyngier wrote:
> Hi Alex,
>
> On 2020-05-30 11:46, Alexandru Elisei wrote:
>> Hi,
>
> [...]
>
diff --git a/virt/kvm/arm/arm.c b/virt/kvm/arm/arm.c
index 48d0ec44ad77..e6378162cdef 100644
--- a/virt/kvm/arm/arm.c
+++ b/virt/kvm/arm/arm.c
Hi Catalin,
On 2020/5/26 19:49, Catalin Marinas wrote:
> On Mon, May 25, 2020 at 07:24:01PM +0800, Keqian Zhu wrote:
>> diff --git a/arch/arm64/include/asm/pgtable-prot.h
>> b/arch/arm64/include/asm/pgtable-prot.h
>> index 1305e28225fc..f9910ba2afd8 100644
>> ---
Hi Marc,
On 2020/5/25 23:44, Marc Zyngier wrote:
> On 2020-05-25 12:23, Keqian Zhu wrote:
>> This patch series add support for stage2 hardware DBM, and it is only
>> used for dirty log for now.
>>
>> It works well under some migration test cases, including VM with 4K
>> pages or 2M THP. I checked
27 matches
Mail list logo
