Re: [Xen-devel] [PATCH v3 2/3] xen/compiler: introduce a define for weak symbols

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 12.07.18 at 09:29, <roger.pau@xxxxxxxxxx> wrote:
> Forgot to Cc maintainers.

Konrad, Ross: Ping?

Jan

> On Wed, Jul 11, 2018 at 05:34:49PM +0200, Roger Pau Monne wrote:
>> And replace the open-coded versions already in tree. No functional
>> change.
>> 
>> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
>> ---
>> Cc: Jan Beulich <jbeulich@xxxxxxxx>
>> Cc: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
>> Cc: Daniel Kiper <daniel.kiper@xxxxxxxxxx>
>> ---
>>  xen/include/xen/compiler.h          | 2 ++
>>  xen/include/xen/livepatch_payload.h | 4 ++--
>>  2 files changed, 4 insertions(+), 2 deletions(-)
>> 
>> diff --git a/xen/include/xen/compiler.h b/xen/include/xen/compiler.h
>> index a7e05681c9..001f589655 100644
>> --- a/xen/include/xen/compiler.h
>> +++ b/xen/include/xen/compiler.h
>> @@ -18,6 +18,8 @@
>>  
>>  #define __packed      __attribute__((__packed__))
>>  
>> +#define __weak        __attribute__((weak))
>> +
>>  #if (!defined(__clang__) && (__GNUC__ == 4) && (__GNUC_MINOR__ < 5))
>>  #define unreachable() do {} while (1)
>>  #else
>> diff --git a/xen/include/xen/livepatch_payload.h 
> b/xen/include/xen/livepatch_payload.h
>> index 8f38cc2c60..4a1a96d054 100644
>> --- a/xen/include/xen/livepatch_payload.h
>> +++ b/xen/include/xen/livepatch_payload.h
>> @@ -24,7 +24,7 @@ typedef void livepatch_unloadcall_t(void);
>>   * executed in series by the livepatch infrastructure at patch load time.
>>   */
>>  #define LIVEPATCH_LOAD_HOOK(_fn) \
>> -    livepatch_loadcall_t *__attribute__((weak)) \
>> +    livepatch_loadcall_t *__weak \
>>          const livepatch_load_data_##_fn __section(".livepatch.hooks.load") 
> = _fn;
>>  
>>  /*
>> @@ -33,7 +33,7 @@ typedef void livepatch_unloadcall_t(void);
>>   * Same as LOAD hook with s/load/unload/
>>   */
>>  #define LIVEPATCH_UNLOAD_HOOK(_fn) \
>> -     livepatch_unloadcall_t *__attribute__((weak)) \
>> +     livepatch_unloadcall_t *__weak \
>>          const livepatch_unload_data_##_fn 
> __section(".livepatch.hooks.unload") = _fn;
>>  
>>  #endif /* __XEN_LIVEPATCH_PAYLOAD_H__ */
>> -- 
>> 2.17.1
>> 




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