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Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO spac
From: |
Laurent Vivier |
Subject: |
Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space |
Date: |
Tue, 13 Oct 2015 14:47:33 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.1.0 |
On 13/10/2015 14:33, Peter Maydell wrote:
> On 13 October 2015 at 13:48, Alexander Gordeev <address@hidden> wrote:
>> On Tue, Oct 13, 2015 at 09:16:34AM +0100, Peter Maydell wrote:
>>> In any case, setting pci_allow_0_address is the right thing,
>>> so we can just change the commit message in this patch.
>>
>> I will post v2 with an updated changelog then.
>>
>>> Incidentally, why is this a property on the machine
>>> and not on the PCI controller device?
>>
>> I am CC-ing Laurent Vivier who introduced the flag.
>>
>> But IMO it *is* a machine property, not PCI controller's
>> one, unless I am missing something.
>
> I think "does this PCI controller handle BARs with
> zero addresses, or does it treat them as if the BAR
> was unmapped" is definitely a controller property...
> you might have in theory a machine with two PCI
> controllers, one of which could deal with zero-addresses
> and one of which could not.
MST asked for a global flag:
https://lists.gnu.org/archive/html/qemu-ppc/2015-07/msg00364.html
But perhaps the machine is not the good place for this global flag ?
CC: Michael for that.
> thanks
> -- PMM
>
- [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Alexander Gordeev, 2015/10/15
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Peter Maydell, 2015/10/15
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Alexander Gordeev, 2015/10/15
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Peter Maydell, 2015/10/13
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Alexander Gordeev, 2015/10/13
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Peter Maydell, 2015/10/15
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space,
Laurent Vivier <=
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Michael S. Tsirkin, 2015/10/13
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Peter Maydell, 2015/10/13
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Michael S. Tsirkin, 2015/10/13
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Peter Maydell, 2015/10/13
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Peter Maydell, 2015/10/15
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Laurent Vivier, 2015/10/16
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Michael S. Tsirkin, 2015/10/16
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Peter Maydell, 2015/10/16
- Re: [Qemu-devel] [PATCH] hw/arm/virt: Allow zero address for PCI IO space, Laurent Vivier, 2015/10/16
- [Qemu-devel] [PATCH v2] hw/arm/virt: Allow zero address for PCI IO space, Alexander Gordeev, 2015/10/15