Re: [Qemu-devel] [PATCH] hw/gen_pcie_root_port: properly set

[Marcel Apfelbaum <marcel@redhat.com>]

On 03/10/2017 0:49, Laszlo Ersek wrote:
> On 10/02/17 12:31, Marcel Apfelbaum wrote:
>> IO_LIMIT and IO_BASE registers should not be writable if
>> gen_pcie_root_port's io-reserve property is set to 0.
>> The COMMAND register should have the IO flag read only.
>>
>>
>> Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
>> ---
>>   hw/pci-bridge/gen_pcie_root_port.c | 7 +++++++
>>   1 file changed, 7 insertions(+)
>>
>> diff --git a/hw/pci-bridge/gen_pcie_root_port.c b/hw/pci-bridge/gen_pcie_root_port.c
>> index ed03ffc764..ad4e6aa7ff 100644
>> --- a/hw/pci-bridge/gen_pcie_root_port.c
>> +++ b/hw/pci-bridge/gen_pcie_root_port.c
>> @@ -85,6 +85,13 @@ static void gen_rp_realize(DeviceState *dev, Error **errp)
>>           rpc->parent_class.exit(d);
>>           return;
>>       }
>> +
>> +    if (!grp->io_reserve) {
>> +        pci_word_test_and_clear_mask(d->wmask + PCI_COMMAND,
>> +                                     PCI_COMMAND_IO);
>> +        d->wmask[PCI_IO_BASE] = 0;
>> +        d->wmask[PCI_IO_LIMIT] = 0;
>> +    }
>>   }
>>   
>>   static const VMStateDescription vmstate_rp_dev = {
>>
> 
> The patch looks good to me (which doesn't mean much, honestly :) ), but
> I think the subject line is truncated. You left off what exactly should
> be set properly. (IO base, IO limit, and command registers, presumably.)
> 

Strange, thanks for pointing it out.
I'll send a V2.

Thanks,
Marcel

> Thanks!
> Laszlo
>