On 01/23/2012 03:29 PM, Alexander Graf wrote:
>
>
> On 23.01.2012, at 21:10, Scott Wood wrote:
>
>> If TLB0 has TLBnCFG[AVAIL] set, then with this patch you'll be raising
>> an exception rather than setting the size to the minimum.
>>
>> If TLB0 does not have TLBnCFG[AVAIL] set, you'll be letti
On 23.01.2012, at 21:10, Scott Wood wrote:
> On 01/23/2012 02:03 PM, Alexander Graf wrote:
>>
>>
>> On 23.01.2012, at 19:49, Scott Wood wrote:
>>
>>> On 01/23/2012 12:41 PM, Alexander Graf wrote:
>> For tlb0 on e500 and derivatives, tsize is explicitly documented as
>> ignored. Sof
On 01/23/2012 02:03 PM, Alexander Graf wrote:
>
>
> On 23.01.2012, at 19:49, Scott Wood wrote:
>
>> On 01/23/2012 12:41 PM, Alexander Graf wrote:
> For tlb0 on e500 and derivatives, tsize is explicitly documented as
> ignored. Software may rely on this.
Yup, that's why there's the
On 23.01.2012, at 19:49, Scott Wood wrote:
> On 01/23/2012 12:41 PM, Alexander Graf wrote:
For tlb0 on e500 and derivatives, tsize is explicitly documented as
ignored. Software may rely on this.
>>> Yup, that's why there's the check for TLBnCG_AVAIL, which indicates that
>>> a TLB ha
On 01/23/2012 12:41 PM, Alexander Graf wrote:
>>> For tlb0 on e500 and derivatives, tsize is explicitly documented as
>>> ignored. Software may rely on this.
>> Yup, that's why there's the check for TLBnCG_AVAIL, which indicates that
>> a TLB has dynamic page size capabilities, which TLB0 does not
On 01/23/2012 07:19 PM, Scott Wood wrote:
On 01/23/2012 11:33 AM, Alexander Graf wrote:
On 01/23/2012 06:32 PM, Scott Wood wrote:
On 01/20/2012 10:15 PM, Alexander Graf wrote:
@@ -4273,6 +4274,16 @@ void helper_booke206_tlbwe(void)
tlb->mas1&= ~MAS1_IPROT;
}
+/* check th
On 01/23/2012 11:33 AM, Alexander Graf wrote:
> On 01/23/2012 06:32 PM, Scott Wood wrote:
>> On 01/20/2012 10:15 PM, Alexander Graf wrote:
>>> @@ -4273,6 +4274,16 @@ void helper_booke206_tlbwe(void)
>>> tlb->mas1&= ~MAS1_IPROT;
>>> }
>>>
>>> +/* check that we support the targete
On 01/23/2012 06:32 PM, Scott Wood wrote:
On 01/20/2012 10:15 PM, Alexander Graf wrote:
@@ -4273,6 +4274,16 @@ void helper_booke206_tlbwe(void)
tlb->mas1&= ~MAS1_IPROT;
}
+/* check that we support the targeted size */
+size_tlb = (tlb->mas1& MAS1_TSIZE_MASK)>> MAS1_TSI
On 01/20/2012 10:15 PM, Alexander Graf wrote:
> @@ -4273,6 +4274,16 @@ void helper_booke206_tlbwe(void)
> tlb->mas1 &= ~MAS1_IPROT;
> }
>
> +/* check that we support the targeted size */
> +size_tlb = (tlb->mas1 & MAS1_TSIZE_MASK) >> MAS1_TSIZE_SHIFT;
> +size_ps = booke2
When setting a TLB entry, we need to check if the TLB we're putting it in
actually supports the given size. According to the 2.06 PowerPC ISA, a
value that's out of range can either be redefined to something implementation
dependent or we can raise an illegal opcode exception. We do the latter.
Si
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