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From: Peter Xu <peterx@redhat.com>
To: Igor Mammedov <imammedo@redhat.com>
Cc: thuth@redhat.com, david@redhat.com, cohuck@redhat.com,
	qemu-devel@nongnu.org, borntraeger@de.ibm.com,
	qemu-s390x@nongnu.org, pbonzini@redhat.com
Subject: Re: [PATCH v7 3/4] kvm: split too big memory section on several memslots
Date: Wed, 25 Sep 2019 11:12:11 +0800	[thread overview]
Message-ID: <20190925031211.GH28074@xz-x1> (raw)
In-Reply-To: <20190924144751.24149-4-imammedo@redhat.com>

On Tue, Sep 24, 2019 at 10:47:50AM -0400, Igor Mammedov wrote:

[...]

> @@ -2877,6 +2912,7 @@ static bool kvm_accel_has_memory(MachineState *ms, AddressSpace *as,
>  
>      for (i = 0; i < kvm->nr_as; ++i) {
>          if (kvm->as[i].as == as && kvm->as[i].ml) {
> +            size = MIN(kvm_max_slot_size, size);
>              return NULL != kvm_lookup_matching_slot(kvm->as[i].ml,
>                                                      start_addr, size);
>          }

Ideally we could also check that the whole (start_addr, size) region
is covered by KVM memslots here, but with current code I can't think
of a case where the result doesn't match with only checking the 1st
memslot. So I assume it's fine.

Reviewed-by: Peter Xu <peterx@redhat.com>

-- 
Peter Xu


  reply	other threads:[~2019-09-25  3:13 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-24 14:47 [PATCH v7 0/4] s390: stop abusing memory_region_allocate_system_memory() Igor Mammedov
2019-09-24 14:47 ` [PATCH v7 1/4] kvm: extract kvm_log_clear_one_slot Igor Mammedov
2019-09-30 10:25   ` Christian Borntraeger
2019-09-24 14:47 ` [PATCH v7 2/4] kvm: clear dirty bitmaps from all overlapping memslots Igor Mammedov
2019-09-24 14:47 ` [PATCH v7 3/4] kvm: split too big memory section on several memslots Igor Mammedov
2019-09-25  3:12   ` Peter Xu [this message]
2019-09-25 12:09     ` Igor Mammedov
2019-09-25 23:45       ` Peter Xu
2019-09-24 14:47 ` [PATCH v7 4/4] s390: do not call memory_region_allocate_system_memory() multiple times Igor Mammedov
2019-09-25  3:27   ` Peter Xu
2019-09-25 11:51     ` Igor Mammedov
2019-09-25 23:52       ` Peter Xu
2019-09-27 13:33         ` Igor Mammedov
2019-09-28  1:28           ` Peter Xu
2019-09-30  7:09             ` Christian Borntraeger
2019-09-30  9:33               ` Igor Mammedov
2019-09-30 10:04                 ` Christian Borntraeger
2019-09-30 10:35                   ` Paolo Bonzini
2019-09-25  7:47 ` [PATCH v7 0/4] s390: stop abusing memory_region_allocate_system_memory() Christian Borntraeger
2019-09-30 11:00 ` Christian Borntraeger

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