On 14-09-24 01:30 AM, Guenter Roeck wrote:
> On Tue, Sep 23, 2014 at 09:49:43PM -0400, Nicholas Krause wrote:
>> This removes the two fixmes in the file, init.c for compiler hints
>> for comments related to compiler hints in linux_gateway_page_addr
>> and map_hpux_gateway_page to change from FIXME to HINT in order
>> for people reading this code to understand that these are compiler
>> hints.
>>
>
> "* const" tells the compiler that a pointer is a constant.
> It doesn't tell the compiler that the data shall not be treated
> as DP-relative.
>
> FIXME as in: We should find a better way to tell the compiler to
> not treat this data as DP-relative.
>
> Can you please stop this ?
>
> Guenter
>
>> Signed-off-by: Nicholas Krause <yoc...@gmail.com>
>> ---
>> arch/parisc/mm/init.c | 4 ++--
>> 1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
>> index 0bef864..668102e 100644
>> --- a/arch/parisc/mm/init.c
>> +++ b/arch/parisc/mm/init.c
>> @@ -733,7 +733,7 @@ static void __init pagetable_init(void)
>> static void __init gateway_init(void)
>> {
>> unsigned long linux_gateway_page_addr;
>> - /* FIXME: This is 'const' in order to trick the compiler
>> + /* HINT: This is 'const' in order to trick the compiler
>> into not treating it as DP-relative data. */
>> extern void * const linux_gateway_page;
>>
>> @@ -761,7 +761,7 @@ map_hpux_gateway_page(struct task_struct *tsk, struct
>> mm_struct *mm)
>> unsigned long start_pte;
>> unsigned long address;
>> unsigned long hpux_gw_page_addr;
>> - /* FIXME: This is 'const' in order to trick the compiler
>> + /* HINT: This is 'const' in order to trick the compiler
>> into not treating it as DP-relative data. */
>> extern void * const hpux_gateway_page;
>>
>> --
>> 1.9.1
>>
>> --
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>>
Guenter,
I asked the maintainers and I got,
On 9/23/2014 4:48 PM, Helge Deller wrote:
> The FIXME: is misleading. It should maybe better read "HINT:" or something
> like that.
> Trivially it's basically just casting the symbol so that the compiler
> will produce the correct code later on.
> There is nothing you could try to "fix".
Why not just remove "FIXME: " from these comments?
Dave
As the reply.
Cheers Nick
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