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Re: [Qemu-devel] [PATCH 3/4] ppc: booke206: use MAV=2.0 TSIZE definition
From: |
Fabien Chouteau |
Subject: |
Re: [Qemu-devel] [PATCH 3/4] ppc: booke206: use MAV=2.0 TSIZE definition, fix 4G pages |
Date: |
Tue, 15 May 2012 18:50:58 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux i686; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 |
On 05/15/2012 05:28 PM, Scott Wood wrote:
> On 05/09/2012 05:54 AM, Fabien Chouteau wrote:
>> On 05/07/2012 06:28 PM, Alexander Graf wrote:
>>> Hi Fabien,
>>>
>>> Could you please elaborate a bit on the case that broke for you with these?
>>> The patches shouldn't change any guest facing behavior :o.
>>>
>>>
>>
>> My bad,
>>
>> The problem comes from my initialization of tlb entries at board reset.
>> I use MAS1_TSIZE_SHIFT:
>>
>> size = 0x1 << MAS1_TSIZE_SHIFT; /* 4 KBytes */
>>
>> but since the definition as changed, the value is incorrect. It should
>> be:
>>
>> size = 0x10 << MAS1_TSIZE_SHIFT; /* 4 KBytes */
>
> You should be using booke206_bytes_to_tsize(), or perhaps create some
> #defines for the various tsizes.
>
Do you mean booke206_page_size_to_tlb()?
BTW, this function is defined locally twice and with different
implementations.
hw/ppce500_mpc8544ds.c:176:static inline target_phys_addr_t
booke206_page_size_to_tlb(uint64_t size)
hw/ppce500_mpc8544ds.c-177-{
hw/ppce500_mpc8544ds.c-178- return ffs(size >> 10) - 1;
hw/ppce500_mpc8544ds.c-179-}
--
hw/ppce500_spin.c:71:static inline target_phys_addr_t
booke206_page_size_to_tlb(uint64_t size)
hw/ppce500_spin.c-72-{
hw/ppce500_spin.c-73- return (ffs(size >> 10) - 1) >> 1;
hw/ppce500_spin.c-74-}
--
Fabien Chouteau