From: Paolo Bonzini <pbonzini@redhat.com>
To: "Gonglei (Arei)" <arei.gonglei@huawei.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>
Cc: "Huangweidong (C)" <weidong.huang@huawei.com>,
"Herongguang (Stephen)" <herongguang.he@huawei.com>,
"mst@redhat.com" <mst@redhat.com>
Subject: Re: [Qemu-devel] [RFC] vhost: Can we change synchronize_rcu to call_rcu in vhost_set_memory() in vhost kernel module?
Date: Fri, 09 May 2014 11:53:41 +0200 [thread overview]
Message-ID: <536CA5A5.4080303@redhat.com> (raw)
In-Reply-To: <33183CC9F5247A488A2544077AF19020815E744C@SZXEMA503-MBS.china.huawei.com>
Il 09/05/2014 11:04, Gonglei (Arei) ha scritto:
>> > Yes, for example enabling/disabling PCI BARs would have that effect.
>> >
> Yes, but PCI BARs are mapped in PCI hole, and they are not overlapped with ram
> memory regions, so disable or enable PCI BARs would not change ram MRs' mapping.
PCI BARs can be RAM (one special case being the ROM BAR).
Paolo
> Since vhost_region_add/vhost_region_del check if changed MemoryRegionSection is ram,
> so vhost memoey mappings will not be influenced, is this correct?
next prev parent reply other threads:[~2014-05-09 9:54 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-09 1:57 [Qemu-devel] [RFC] vhost: Can we change synchronize_rcu to call_rcu in vhost_set_memory() in vhost kernel module? Gonglei (Arei)
2014-05-09 8:14 ` Paolo Bonzini
2014-05-09 9:04 ` Gonglei (Arei)
2014-05-09 9:53 ` Paolo Bonzini [this message]
2014-05-12 9:28 ` Gonglei (Arei)
2014-05-12 9:57 ` Paolo Bonzini
2014-05-12 10:08 ` Michael S. Tsirkin
2014-05-12 10:14 ` Paolo Bonzini
2014-05-12 10:18 ` Michael S. Tsirkin
2014-05-12 10:25 ` Paolo Bonzini
2014-05-12 11:07 ` Michael S. Tsirkin
2014-05-12 11:46 ` Paolo Bonzini
2014-05-12 12:12 ` Michael S. Tsirkin
2014-05-12 12:46 ` Paolo Bonzini
2014-05-12 12:53 ` Michael S. Tsirkin
2014-05-12 13:02 ` Paolo Bonzini
2014-05-12 10:30 ` Michael S. Tsirkin
2014-05-13 7:03 ` Gonglei (Arei)
2014-05-13 8:21 ` Michael S. Tsirkin
2014-05-13 7:01 ` Gonglei (Arei)
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