RE: [PATCH v2 04/10] Introduce the CPU address space destruction function

[Salil Mehta]

Hi David,

> From: qemu-devel-bounces+salil.mehta=huawei.com@nongnu.org <qemu-devel-
> bounces+salil.mehta=huawei.com@nongnu.org> On Behalf Of David Hildenbrand
> Sent: Tuesday, September 12, 2023 8:00 AM
> To: xianglai li <lixianglai@loongson.cn>; qemu-devel@nongnu.org
> Cc: Salil Mehta <salil.mehta@opnsrc.net>; Xiaojuan Yang
> <yangxiaojuan@loongson.cn>; Song Gao <gaosong@loongson.cn>; Michael S.
> Tsirkin <mst@redhat.com>; Igor Mammedov <imammedo@redhat.com>; Ani Sinha
> <anisinha@redhat.com>; Paolo Bonzini <pbonzini@redhat.com>; Richard
> Henderson <richard.henderson@linaro.org>; Eduardo Habkost
> <eduardo@habkost.net>; Marcel Apfelbaum <marcel.apfelbaum@gmail.com>;
> Philippe Mathieu-Daudé <philmd@linaro.org>; wangyanan (Y)
> <wangyanan55@huawei.com>; Daniel P. Berrangé <berrange@redhat.com>; Peter
> Xu <peterx@redhat.com>; Bibo Mao <maobibo@loongson.cn>
> Subject: Re: [PATCH v2 04/10] Introduce the CPU address space destruction
> function
> 
> On 12.09.23 04:11, xianglai li wrote:
> > Introduce new function to destroy CPU address space resources
> > for cpu hot-(un)plug.
> >
> How do other archs handle that? Or how are they able to get away without
> destroying?

This patch-set is based on the ARM RFC. We do destroy AddressSpace there.
Is there any reason you are hinting why it should not be done?

I have posted the RFC V2 Virtual CPU Hotplug Support on ARM today and
You are CC'ed in it. Please have a look at the implementation:

20230926100436.28284-1-salil.mehta@huawei.com/T/#m523b37819c4811c7827333982004e07a1ef03879">https://lore.kernel.org/qemu-devel/20230926100436.28284-1-salil.mehta@huawei.com/T/#m523b37819c4811c7827333982004e07a1ef03879

Thanks
Salil.