From: Pavel Fedin <p.fedin@samsung.com>
To: 'Alexander Graf' <agraf@suse.de>,
'Peter Maydell' <peter.maydell@linaro.org>
Cc: 'QEMU Developers' <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] [RFC] Virt machine memory map
Date: Wed, 22 Jul 2015 09:52:09 +0300 [thread overview]
Message-ID: <03d501d0c44a$eefe6da0$ccfb48e0$@samsung.com> (raw)
In-Reply-To: <55ACDA41.2080201@suse.de>
Hello!
> > I think the theory we discussed at the time of putting in the PCIe
> > device was that if we wanted this we'd add support for the other
> > PCIe memory window (which would then live at somewhere above 4GB).
> > Alex, can you remember what the idea was?
>
> Yes, pretty much. It would give us an upper bound to the amount of RAM
> that we're able to support, but at least we would be able to support big
> MMIO regions like for ivshmem.
But i currently think that specification of "Generic PCI host" assumes only a single MMIO region + single PIO region + single ECAM. And we cannot have two MMIO regions without changing its specification, which can be problematic. Am i wrong about this ?
Kind regards,
Pavel Fedin
Expert Engineer
Samsung Electronics Research center Russia
next prev parent reply other threads:[~2015-07-22 6:52 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-20 8:55 [Qemu-devel] [RFC] Virt machine memory map Pavel Fedin
2015-07-20 9:41 ` Peter Maydell
2015-07-20 11:23 ` Alexander Graf
2015-07-20 13:30 ` Igor Mammedov
2015-07-20 13:44 ` Alexander Graf
2015-07-22 6:52 ` Pavel Fedin [this message]
2015-07-22 7:33 ` Alexander Graf
2015-07-22 8:42 ` Pavel Fedin
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