From: Avi Kivity <avi@redhat.com>
To: Anthony Liguori <anthony@codemonkey.ws>
Cc: Cam Macdonell <cam@cs.ualberta.ca>,
qemu-devel@nongnu.org, kvm@vger.kernel.org
Subject: Re: [Qemu-devel] [PATCH v7 0/4] Inter-VM shared memory device
Date: Mon, 26 Jul 2010 23:27:41 +0300 [thread overview]
Message-ID: <4C4DEFBD.9000700@redhat.com> (raw)
In-Reply-To: <4C4DE501.2080202@codemonkey.ws>
On 07/26/2010 10:41 PM, Anthony Liguori wrote:
>
> kvm_set_irqfd() is fine, it just needs to be ported. It should be
> there due to vhost though?
>
It should, but isn't.
> qemu_ram_map() is more difficult. I would think the better approach
> would be to invert things. Instead of a "give me a stable mapping
> that is shared atomically with a guest to this ram region", I would go
> with "go create a ram region with this preallocated memory" and then
> just assume that afterwards, you can make use of it and it's exposed
> as atomic memory.
Isn't that what qemu_ram_map() does?
> ram_addr_t qemu_ram_map(DeviceState *dev, const char *name,
> ram_addr_t size, void *host)
'host' is your "this preallocated memory", no?
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
next prev parent reply other threads:[~2010-07-26 20:27 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-15 20:23 [Qemu-devel] [PATCH v7 0/4] Inter-VM shared memory device Cam Macdonell
2010-06-15 20:23 ` [Qemu-devel] [PATCH v7 1/4] Device specification for shared memory PCI device Cam Macdonell
2010-06-15 20:23 ` [Qemu-devel] [PATCH v7 2/4] Add function to assign ioeventfd to MMIO Cam Macdonell
2010-06-15 20:23 ` [Qemu-devel] [PATCH v7 3/4] Support marking a device as non-migratable Cam Macdonell
2010-06-15 20:23 ` [Qemu-devel] [PATCH v7 4/4] Inter-VM shared memory PCI device Cam Macdonell
2010-06-23 15:57 ` [Qemu-devel] [PATCH v7 RESEND " Cam Macdonell
2010-07-08 21:08 ` Cam Macdonell
2010-07-08 23:45 ` [Qemu-devel] " David S. Ahern
2010-07-02 18:12 ` [Qemu-devel] Re: [PATCH v7 0/4] Inter-VM shared memory device Cam Macdonell
2010-07-26 13:48 ` [Qemu-devel] " Anthony Liguori
2010-07-26 19:01 ` Cam Macdonell
2010-07-26 19:41 ` Anthony Liguori
2010-07-26 20:27 ` Avi Kivity [this message]
2010-07-26 20:41 ` Anthony Liguori
2010-07-26 21:46 ` Cam Macdonell
2010-07-26 22:18 ` Anthony Liguori
2010-07-26 19:51 ` Avi Kivity
2010-07-26 20:03 ` Cam Macdonell
2010-07-26 20:11 ` Avi Kivity
2010-07-26 20:16 ` Cam Macdonell
2010-07-26 20:20 ` Avi Kivity
2010-07-26 20:05 ` Anthony Liguori
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