On 2021/4/12 23:25, Andi Kleen wrote:
The reason why soft lockup happens may be the unmapped EPT pages. So, do we
have a way to map all gpa
before we use pebs on Skylake?
Can you configure a VT-d device, that will implicitly pin all pages for the
IOMMU. I *think* that should be enough for tes
Hi Like,
On 2021/4/9 16:46, Like Xu wrote:
Hi Liuxiangdong,
On 2021/4/9 16:33, Liuxiangdong (Aven, Cloud Infrastructure Service
Product Dept.) wrote:
Do you have any comments or ideas about it ?
https://lore.kernel.org/kvm/606e5ef6.2060...@huawei.com/
My expectation is that there may be
On 2021/4/15 9:38, Xu, Like wrote:
On 2021/4/14 22:49, Liuxiangdong wrote:
Hi Like,
On 2021/4/9 16:46, Like Xu wrote:
Hi Liuxiangdong,
On 2021/4/9 16:33, Liuxiangdong (Aven, Cloud Infrastructure Service
Product Dept.) wrote:
Do you have any comments or ideas about it ?
https
On 2021/4/15 11:20, Like Xu wrote:
When a guest counter is configured as a PEBS counter through
IA32_PEBS_ENABLE, a guest PEBS event will be reprogrammed by
configuring a non-zero precision level in the perf_event_attr.
The guest PEBS overflow PMI bit would be set in the guest
GLOBAL_STATUS M
On 2021/4/15 11:20, Like Xu wrote:
The bit 12 represents "Processor Event Based Sampling Unavailable (RO)" :
1 = PEBS is not supported.
0 = PEBS is supported.
A write to this PEBS_UNAVL available bit will bring #GP(0) when guest PEBS
is enabled. Some PEBS drivers in guest may
On 2021/4/6 13:14, Xu, Like wrote:
Hi Xiangdong,
On 2021/4/6 11:24, Liuxiangdong (Aven, Cloud Infrastructure Service
Product Dept.) wrote:
Hi，like.
Some questions about this new pebs patches set：
https://lore.kernel.org/kvm/20210329054137.120994-2-like...@linux.intel.com/
The new
Do you have any comments or ideas about it ?
https://lore.kernel.org/kvm/606e5ef6.2060...@huawei.com/
On 2021/4/6 13:14, Xu, Like wrote:
Hi Xiangdong,
On 2021/4/6 11:24, Liuxiangdong (Aven, Cloud Infrastructure Service
Product Dept.) wrote:
Hi，like.
Some questions about this new pebs
On 2021/1/26 15:08, Xu, Like wrote:
On 2021/1/25 22:47, Liuxiangdong (Aven, Cloud Infrastructure Service
Product Dept.) wrote:
Thanks for replying,
On 2021/1/25 10:41, Like Xu wrote:
+ k...@vger.kernel.org
Hi Liuxiangdong,
On 2021/1/22 18:02, Liuxiangdong (Aven, Cloud Infrastructure
On 2021/4/9 16:46, Like Xu wrote:
Hi Liuxiangdong,
On 2021/4/9 16:33, Liuxiangdong (Aven, Cloud Infrastructure Service
Product Dept.) wrote:
Do you have any comments or ideas about it ?
https://lore.kernel.org/kvm/606e5ef6.2060...@huawei.com/
My expectation is that there may be many
On 2021/4/6 20:47, Andi Kleen wrote:
AFAIK， Icelake supports adaptive PEBS and extended PEBS which Skylake
doesn't.
But we can still use IA32_PEBS_ENABLE MSR to indicate general-purpose
counter in Skylake.
Is there anything else that only Icelake supports in this patches set?
Only Icelake ser
Hi，like.
Some questions about this new pebs patches set：
https://lore.kernel.org/kvm/20210329054137.120994-2-like...@linux.intel.com/
The new hardware facility supporting guest PEBS is only available
on Intel Ice Lake Server platforms for now.
AFAIK， Icelake supports adaptive PEBS and extended
Thanks for replying,
On 2021/1/25 10:41, Like Xu wrote:
+ k...@vger.kernel.org
Hi Liuxiangdong,
On 2021/1/22 18:02, Liuxiangdong (Aven, Cloud Infrastructure Service
Product Dept.) wrote:
Hi Like,
Some questions about
https://lore.kernel.org/kvm/20210104131542.495413-1-like
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