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Re: [PATCH] xen/*/asm-offset: Fix bad copy&paste from x86
- To: Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Tue, 30 Jan 2024 23:01:16 +0000
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- Cc: Jan Beulich <JBeulich@xxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Bob Eshleman <bobbyeshleman@xxxxxxxxx>, Alistair Francis <alistair.francis@xxxxxxx>, Connor Davis <connojdavis@xxxxxxxxx>
- Delivery-date: Tue, 30 Jan 2024 23:01:20 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 30/01/2024 11:00 pm, Shawn Anastasio wrote:
> Hi Andrew,
>
> On 1/30/24 4:28 PM, Andrew Cooper wrote:
>> All architectures have copy&pasted bad logic from x86.
>>
>> OFFSET() having a trailing semi-colon within the macro expansion can be a
>> problematic pattern. It's benign in this case, but fix it anyway.
>>
>> Perform style fixes for the other macros, and tame the mess of BLANK()
>> position to be consistent (one BLANK() after each block) so the intermediate
>> form is legible too.
>>
>> No functional change.
>>
>> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
>> ---
>> CC: Jan Beulich <JBeulich@xxxxxxxx>
>> CC: Roger Pau Monné <roger.pau@xxxxxxxxxx>
>> CC: Wei Liu <wl@xxxxxxx>
>> CC: Stefano Stabellini <sstabellini@xxxxxxxxxx>
>> CC: Julien Grall <julien@xxxxxxx>
>> CC: Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>
>> CC: Bertrand Marquis <bertrand.marquis@xxxxxxx>
>> CC: Michal Orzel <michal.orzel@xxxxxxx>
>> CC: Bob Eshleman <bobbyeshleman@xxxxxxxxx>
>> CC: Alistair Francis <alistair.francis@xxxxxxx>
>> CC: Connor Davis <connojdavis@xxxxxxxxx>
>> CC: Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx>
>>
>> Why does PPC have a local copy of ilog2() here? Especially as it's not used,
>> and there's a perfectly good one in <xen/bitops.h>
> I believe this was a carryover from before we had asm/bitops.h
> implemented on PPC. Now that we have bitops implemented (and we don't
> define any offsets that use log2 anymore anyways), this is fine to
> remove. Will submit a patch to do so.
Ah - good to know. Thanks.
> As for the actual contents of this patch,
>
> Acked-by: Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx>
and thanks also.
~Andrew
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