* [Qemu-devel] PCI Emulation in QEMU
@ 2014-04-03 7:02 Ayaz Akram
2014-04-03 11:34 ` Michael S. Tsirkin
0 siblings, 1 reply; 2+ messages in thread
From: Ayaz Akram @ 2014-04-03 7:02 UTC (permalink / raw)
To: qemu-devel
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Can any one tell me, what's the address range used by PCI emulation in QEMU
and whether this emulation supports 64 bit addresses?
Moreover, is "PCIE" emulation in QEMU used by any architecture?
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Qemu-devel] PCI Emulation in QEMU
2014-04-03 7:02 [Qemu-devel] PCI Emulation in QEMU Ayaz Akram
@ 2014-04-03 11:34 ` Michael S. Tsirkin
0 siblings, 0 replies; 2+ messages in thread
From: Michael S. Tsirkin @ 2014-04-03 11:34 UTC (permalink / raw)
To: Ayaz Akram; +Cc: qemu-devel
On Thu, Apr 03, 2014 at 12:02:35PM +0500, Ayaz Akram wrote:
> Can any one tell me, what's the address range used by PCI emulation in QEMU and
> whether this emulation supports 64 bit addresses?
We'll support full 64 bit addresses starting 2.0.
However, note that most hardware (cpus and iommus
still dosn't allow full 64 bit addresses).
So if you program a 64 bit bar outside the range supported by
the CPU, it won't be able to access it,
> Moreover, is "PCIE" emulation in QEMU used by any architecture?
q35 machine type is using it on x86.
^ permalink raw reply [flat|nested] 2+ messages in thread
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2014-04-03 7:02 [Qemu-devel] PCI Emulation in QEMU Ayaz Akram
2014-04-03 11:34 ` Michael S. Tsirkin
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