From: David Hildenbrand <david@redhat.com>
To: Emanuele Giuseppe Esposito <eesposit@redhat.com>, kvm@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
Maxim Levitsky <mlevitsk@redhat.com>,
x86@kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 9/9] kvm_main.c: handle atomic memslot update
Date: Tue, 27 Sep 2022 09:46:07 +0200 [thread overview]
Message-ID: <cde8be9d-64c0-80e5-7663-4302d075dcbc@redhat.com> (raw)
In-Reply-To: <20220909104506.738478-10-eesposit@redhat.com>
On 09.09.22 12:45, Emanuele Giuseppe Esposito wrote:
> When kvm_vm_ioctl_set_memory_region_list() is invoked, we need
> to make sure that all memslots are updated in the inactive list
> and then swap (preferreably only once) the lists, so that all
> changes are visible immediately.
>
> The only issue is that DELETE and MOVE need to perform 2 swaps:
> firstly replace old memslot with invalid, and then remove invalid.
>
I'm curious, how would a resize (grow/shrink) or a split be handled?
--
Thanks,
David / dhildenb
next prev parent reply other threads:[~2022-09-27 7:46 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-09 10:44 [RFC PATCH 0/9] kvm: implement atomic memslot updates Emanuele Giuseppe Esposito
2022-09-09 10:44 ` [RFC PATCH 1/9] kvm_main.c: move slot check in kvm_set_memory_region Emanuele Giuseppe Esposito
2022-09-28 16:41 ` Paolo Bonzini
2022-09-09 10:44 ` [RFC PATCH 2/9] kvm.h: introduce KVM_SET_USER_MEMORY_REGION_LIST ioctl Emanuele Giuseppe Esposito
2022-09-28 16:42 ` Paolo Bonzini
2022-09-09 10:45 ` [RFC PATCH 3/9] kvm_main.c: introduce kvm_internal_memory_region_list Emanuele Giuseppe Esposito
2022-09-28 16:48 ` Paolo Bonzini
2022-09-09 10:45 ` [RFC PATCH 4/9] kvm_main.c: split logic in kvm_set_memslots Emanuele Giuseppe Esposito
2022-09-28 17:04 ` Paolo Bonzini
2022-09-09 10:45 ` [RFC PATCH 5/9] kvm_main.c: split __kvm_set_memory_region logic in kvm_check_mem and kvm_prepare_batch Emanuele Giuseppe Esposito
2022-09-13 2:56 ` Yang, Weijiang
2022-09-18 16:22 ` Emanuele Giuseppe Esposito
2022-09-28 17:11 ` Paolo Bonzini
2022-09-09 10:45 ` [RFC PATCH 6/9] kvm_main.c: simplify change-specific callbacks Emanuele Giuseppe Esposito
2022-09-09 10:45 ` [RFC PATCH 7/9] kvm_main.c: duplicate invalid memslot also in inactive list Emanuele Giuseppe Esposito
2022-09-28 17:18 ` Paolo Bonzini
2022-09-09 10:45 ` [RFC PATCH 8/9] kvm_main.c: find memslots from the inactive memslot list Emanuele Giuseppe Esposito
2022-09-09 10:45 ` [RFC PATCH 9/9] kvm_main.c: handle atomic memslot update Emanuele Giuseppe Esposito
2022-09-13 2:30 ` Yang, Weijiang
2022-09-18 16:18 ` Emanuele Giuseppe Esposito
2022-09-27 7:46 ` David Hildenbrand [this message]
2022-09-27 8:35 ` Emanuele Giuseppe Esposito
2022-09-27 9:22 ` David Hildenbrand
2022-09-27 9:32 ` Emanuele Giuseppe Esposito
2022-09-27 14:52 ` David Hildenbrand
2022-09-28 17:29 ` Paolo Bonzini
2022-09-09 14:30 ` [RFC PATCH 0/9] kvm: implement atomic memslot updates Sean Christopherson
2022-09-18 16:13 ` Emanuele Giuseppe Esposito
2022-09-19 7:38 ` Like Xu
2022-09-19 7:53 ` David Hildenbrand
2022-09-19 17:30 ` David Hildenbrand
2022-09-23 13:10 ` Emanuele Giuseppe Esposito
2022-09-23 13:21 ` David Hildenbrand
2022-09-23 13:38 ` Emanuele Giuseppe Esposito
2022-09-26 9:03 ` David Hildenbrand
2022-09-26 21:28 ` Sean Christopherson
2022-09-27 7:38 ` Emanuele Giuseppe Esposito
2022-09-27 15:58 ` Sean Christopherson
2022-09-28 9:11 ` Emanuele Giuseppe Esposito
2022-09-28 11:14 ` Maxim Levitsky
2022-09-28 12:52 ` David Hildenbrand
2022-09-28 15:07 ` Paolo Bonzini
2022-09-28 15:33 ` David Hildenbrand
2022-09-28 15:58 ` Sean Christopherson
2022-09-28 16:38 ` Paolo Bonzini
2022-09-28 20:41 ` Sean Christopherson
2022-09-29 8:05 ` Emanuele Giuseppe Esposito
2022-09-29 8:24 ` David Hildenbrand
2022-09-29 15:18 ` Sean Christopherson
2022-09-29 15:41 ` Paolo Bonzini
2022-09-29 15:28 ` Paolo Bonzini
2022-09-29 15:40 ` Maxim Levitsky
2022-09-29 16:00 ` David Hildenbrand
2022-09-29 21:39 ` Sean Christopherson
2022-10-13 7:43 ` Emanuele Giuseppe Esposito
2022-10-13 8:44 ` David Hildenbrand
2022-10-13 11:12 ` Emanuele Giuseppe Esposito
2022-10-13 14:45 ` David Hildenbrand
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