On 23/04/13 23:57, Christoffer Dall wrote:
>
>
> On Mon, Apr 8, 2013 at 9:17 AM, Marc Zyngier <[email protected]> wrote:
>> Add the necessary infrastructure for identity-mapped HYP page
>> tables. Idmap-ed code must be in the ".hyp.idmap.text" linker
>> section.
>>
>> The rest of the HYP ends up in ".hyp.text".
>>
>> Signed-off-by: Marc Zyngier <[email protected]>
>> ---
>> arch/arm64/kernel/vmlinux.lds.S | 16 ++++++++++++++++
>> 1 file changed, 16 insertions(+)
>>
>> diff --git a/arch/arm64/kernel/vmlinux.lds.S
>> b/arch/arm64/kernel/vmlinux.lds.S
>> index 3fae2be..855d43d 100644
>> --- a/arch/arm64/kernel/vmlinux.lds.S
>> +++ b/arch/arm64/kernel/vmlinux.lds.S
>> @@ -17,6 +17,15 @@ ENTRY(stext)
>>
>> jiffies = jiffies_64;
>>
>> +#define HYPERVISOR_TEXT \
>> + . = ALIGN(2048); \
>
> why align to 2048? Comment?
Vectors require a 2kB alignment. I'll add a comment to that effect.
> are you changing this to the same idea as for the 32-bit code to reduce the
> kernel size?
The mechanism is exactly the same indeed. Only the alignment
requirements are (massively) different.
Thanks,
M.
--
Jazz is not dead. It just smells funny...
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