[PATCH v3 4/7] ARM: KVM: enforce maximum size for identity mapped code

[Marc Zyngier]

On 19/04/13 14:34, Russell King - ARM Linux wrote:
> On Fri, Apr 12, 2013 at 04:18:49PM +0100, Marc Zyngier wrote:
>> We're about to move to an init procedure where we rely on the
>> fact that the init code fits in a single page. Make sure we
>> align the idmap text on a vector alignment, and that the code is
>> not bigger than a single page.
>>
>> Signed-off-by: Marc Zyngier <marc.zyngier at arm.com>
>> ---
>>  arch/arm/kernel/vmlinux.lds.S | 7 ++++++-
>>  1 file changed, 6 insertions(+), 1 deletion(-)
>>
>> diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
>> index b571484..a871b8e 100644
>> --- a/arch/arm/kernel/vmlinux.lds.S
>> +++ b/arch/arm/kernel/vmlinux.lds.S
>> @@ -20,7 +20,7 @@
>>  	VMLINUX_SYMBOL(__idmap_text_start) = .;				\
>>  	*(.idmap.text)							\
>>  	VMLINUX_SYMBOL(__idmap_text_end) = .;				\
>> -	ALIGN_FUNCTION();						\
>> +	. = ALIGN(32);							\
> 
> It would be a good idea to document what this 32 is.

Good point. I'll update this.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...