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Re: [Qemu-devel] [PATCH v2] piix: fix 32bit pci hole
From: |
Laszlo Ersek |
Subject: |
Re: [Qemu-devel] [PATCH v2] piix: fix 32bit pci hole |
Date: |
Tue, 10 Dec 2013 05:57:41 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20131118 Thunderbird/17.0.11 |
On 11/27/13 13:40, Laszlo Ersek wrote:
> On 11/27/13 12:57, Gerd Hoffmann wrote:
>> Make the 32bit pci hole start at end of ram, so all possible address
>> space is covered. Of course the firmware can use less than that.
>> Leaving space unused is no problem, mapping pci bars outside the
>> hole causes problems though.
>>
>> Signed-off-by: Gerd Hoffmann <address@hidden>
>> ---
>> hw/pci-host/piix.c | 10 +---------
>> 1 file changed, 1 insertion(+), 9 deletions(-)
>>
>> diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
>> index edc974e..8e41ac1 100644
>> --- a/hw/pci-host/piix.c
>> +++ b/hw/pci-host/piix.c
>> @@ -345,15 +345,7 @@ PCIBus *i440fx_init(PCII440FXState **pi440fx_state,
>> f->ram_memory = ram_memory;
>>
>> i440fx = I440FX_PCI_HOST_BRIDGE(dev);
>> - /* Set PCI window size the way seabios has always done it. */
>> - /* Power of 2 so bios can cover it with a single MTRR */
>> - if (ram_size <= 0x80000000) {
>> - i440fx->pci_info.w32.begin = 0x80000000;
>> - } else if (ram_size <= 0xc0000000) {
>> - i440fx->pci_info.w32.begin = 0xc0000000;
>> - } else {
>> - i440fx->pci_info.w32.begin = 0xe0000000;
>> - }
>> + i440fx->pci_info.w32.begin = pci_hole_start;
>>
>> memory_region_init_alias(&f->pci_hole, OBJECT(d), "pci-hole",
>> f->pci_address_space,
>> pci_hole_start, pci_hole_size);
>>
>
> Reviewed-by: Laszlo Ersek <address@hidden>
Can someone please pick this up? (I've also nominated it for 1.7.1.)
Thanks,
Laszlo
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