RE: [PATCH RFC V3 00/29] Support of Virtual CPU Hotplug for ARMv8 Arch

[Salil Mehta]

HI Miguel,

>  From: Miguel Luis <miguel.luis@oracle.com>
>  Sent: Monday, July 1, 2024 12:39 PM
>  To: Salil Mehta <salil.mehta@huawei.com>
>  
>  Hi Salil,
>  
>  > On 13 Jun 2024, at 23:36, Salil Mehta <salil.mehta@huawei.com> wrote:
>  >
>  > PROLOGUE
>  > ========
>  >
>  > To assist in review and set the right expectations from this RFC,
>  > please first read the sections *APPENDED AT THE END* of this cover
>  letter:
>  >
>  > 1. Important *DISCLAIMER* [Section (X)] 2. Work presented at
>  KVMForum
>  > Conference (slides available) [Section (V)F] 3. Organization of
>  > patches [Section (XI)] 4. References [Section (XII)] 5. Detailed TODO
>  > list of leftover work or work-in-progress [Section (IX)]
>  >
>  > There has been interest shown by other organizations in adapting this
>  > series for their architecture. Hence, RFC V2 [21] has been split into
>  > architecture
>  > *agnostic* [22] and *specific* patch sets.
>  >
>  > This is an ARM architecture-specific patch set carved out of RFC V2.
>  > Please check section (XI)B for details of architecture agnostic patches.
>  >
>  > SECTIONS [I - XIII] are as follows:
>  >
>  > (I) Key Changes [details in last section (XIV)]
>  > ==============================================
>  >
>  > RFC V2 -> RFC V3
>  >
>  > 1. Split into Architecture *agnostic* (V13) [22] and *specific* (RFC V3)
>  patch sets.
>  > 2. Addressed comments by Gavin Shan (RedHat), Shaoqin Huang
>  (RedHat), Philippe Mathieu-Daudé (Linaro),
>  >   Jonathan Cameron (Huawei), Zhao Liu (Intel).
>  >
>  
>  I’ve tested this series along with v10 kernel patches from [1] on the
>  following items:
>  
>  Boot.
>  Hotplug up to maxcpus.
>  Hot unplug down to the number of boot cpus.
>  Hotplug vcpus then migrate to a new VM.
>  Hot unplug down to the number of boot cpus then migrate to a new VM.
>  Up to 6 successive live migrations.
>  
>  And in which LGTM.
>  
>  Please feel free to add,
>  Tested-by: Miguel Luis <miguel.luis@oracle.com>

Many thanks for your efforts. Appreciate this.


Best
Salil.


>  
>  Regards,
>  Miguel
>  
>  [1]
>  https://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git/log/?h=for
>  -next/vcpu-hotplug
>  
>  > RFC V1 -> RFC V2