From: Paolo Bonzini <pbonzini@redhat.com>
To: Peter Xu <peterx@redhat.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: "Dr . David Alan Gilbert" <dgilbert@redhat.com>,
Christophe de Dinechin <dinechin@redhat.com>,
Sean Christopherson <sean.j.christopherson@intel.com>,
"Michael S . Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>
Subject: Re: [PATCH RESEND v2 04/17] KVM: Cache as_id in kvm_memory_slot
Date: Wed, 8 Jan 2020 18:47:17 +0100 [thread overview]
Message-ID: <4c60668e-1d60-5ab7-8524-54cc970d496d@redhat.com> (raw)
In-Reply-To: <20191221014938.58831-5-peterx@redhat.com>
On 21/12/19 02:49, Peter Xu wrote:
> Let's cache the address space ID just like the slot ID.
Please add a not that it will be useful in order to fill in the dirty
page ring buffer.
Paolo
> Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
> Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com>
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
> include/linux/kvm_host.h | 1 +
> virt/kvm/kvm_main.c | 2 ++
> 2 files changed, 3 insertions(+)
>
> diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
> index 4e34cf97ca90..24854c9e3717 100644
> --- a/include/linux/kvm_host.h
> +++ b/include/linux/kvm_host.h
> @@ -348,6 +348,7 @@ struct kvm_memory_slot {
> unsigned long userspace_addr;
> u32 flags;
> short id;
> + u8 as_id;
> };
>
> static inline unsigned long kvm_dirty_bitmap_bytes(struct kvm_memory_slot *memslot)
> diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
> index b1047173d78e..cea4b8dd4ac9 100644
> --- a/virt/kvm/kvm_main.c
> +++ b/virt/kvm/kvm_main.c
> @@ -1027,6 +1027,8 @@ int __kvm_set_memory_region(struct kvm *kvm,
>
> new = old = *slot;
>
> + BUILD_BUG_ON(U8_MAX < KVM_ADDRESS_SPACE_NUM);
> + new.as_id = as_id;
> new.id = id;
> new.base_gfn = base_gfn;
> new.npages = npages;
>
next prev parent reply other threads:[~2020-01-08 17:47 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-21 1:49 [PATCH RESEND v2 00/17] KVM: Dirty ring interface Peter Xu
2019-12-21 1:49 ` [PATCH RESEND v2 01/17] KVM: Remove kvm_read_guest_atomic() Peter Xu
2020-01-08 17:45 ` Paolo Bonzini
2019-12-21 1:49 ` [PATCH RESEND v2 02/17] KVM: X86: Change parameter for fast_page_fault tracepoint Peter Xu
2020-01-08 17:46 ` Paolo Bonzini
2019-12-21 1:49 ` [PATCH RESEND v2 03/17] KVM: X86: Don't track dirty for KVM_SET_[TSS_ADDR|IDENTITY_MAP_ADDR] Peter Xu
2019-12-21 13:51 ` Paolo Bonzini
2019-12-23 17:27 ` Peter Xu
2019-12-23 17:59 ` Paolo Bonzini
2019-12-23 20:10 ` Peter Xu
2020-01-08 17:46 ` Paolo Bonzini
2020-01-08 19:15 ` Peter Xu
2020-01-08 19:44 ` Paolo Bonzini
2020-01-08 21:02 ` Peter Xu
2019-12-21 1:49 ` [PATCH RESEND v2 04/17] KVM: Cache as_id in kvm_memory_slot Peter Xu
2020-01-08 17:47 ` Paolo Bonzini [this message]
2019-12-21 1:49 ` [PATCH RESEND v2 05/17] KVM: Add build-time error check on kvm_run size Peter Xu
2019-12-21 1:49 ` [PATCH RESEND v2 06/17] KVM: Pass in kvm pointer into mark_page_dirty_in_slot() Peter Xu
2020-01-08 17:47 ` Paolo Bonzini
2019-12-21 1:49 ` [PATCH RESEND v2 07/17] KVM: Move running VCPU from ARM to common code Peter Xu
2020-01-08 17:47 ` Paolo Bonzini
2019-12-21 1:49 ` [PATCH RESEND v2 08/17] KVM: X86: Implement ring-based dirty memory tracking Peter Xu
2019-12-24 6:16 ` Jason Wang
2019-12-24 15:08 ` Peter Xu
2019-12-25 3:23 ` Jason Wang
2020-01-08 15:52 ` Peter Xu
2020-01-08 17:41 ` Paolo Bonzini
2020-01-08 19:06 ` Peter Xu
2020-01-08 19:44 ` Paolo Bonzini
2020-01-08 19:59 ` Peter Xu
2020-01-08 20:06 ` Paolo Bonzini
2019-12-21 1:49 ` [PATCH RESEND v2 09/17] KVM: Make dirty ring exclusive to dirty bitmap log Peter Xu
2019-12-21 1:58 ` [PATCH RESEND v2 10/17] KVM: Don't allocate dirty bitmap if dirty ring is enabled Peter Xu
2019-12-21 2:04 ` [PATCH RESEND v2 11/17] KVM: selftests: Always clear dirty bitmap after iteration Peter Xu
2019-12-21 2:04 ` [PATCH RESEND v2 12/17] KVM: selftests: Sync uapi/linux/kvm.h to tools/ Peter Xu
2019-12-21 2:04 ` [PATCH RESEND v2 13/17] KVM: selftests: Use a single binary for dirty/clear log test Peter Xu
2019-12-21 2:04 ` [PATCH RESEND v2 14/17] KVM: selftests: Introduce after_vcpu_run hook for dirty " Peter Xu
2019-12-21 2:04 ` [PATCH RESEND v2 15/17] KVM: selftests: Add dirty ring buffer test Peter Xu
2019-12-24 6:18 ` Jason Wang
2019-12-24 15:22 ` Peter Xu
2019-12-24 6:50 ` Jason Wang
2019-12-24 15:24 ` Peter Xu
2019-12-21 2:04 ` [PATCH RESEND v2 16/17] KVM: selftests: Let dirty_log_test async for dirty ring test Peter Xu
2019-12-21 2:04 ` [PATCH RESEND v2 17/17] KVM: selftests: Add "-c" parameter to dirty log test Peter Xu
2019-12-24 6:34 ` [PATCH RESEND v2 00/17] KVM: Dirty ring interface Jason Wang
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