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Re: [PATCH v2 12/13] xen/bitops: Clean up ffs64()/fls64() definitions
- To: Jan Beulich <jbeulich@xxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Sat, 1 Jun 2024 13:57:17 +0100
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- Cc: 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>, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>, Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx>, "consulting @ bugseng . com" <consulting@xxxxxxxxxxx>, Simone Ballarin <simone.ballarin@xxxxxxxxxxx>, Federico Serafini <federico.serafini@xxxxxxxxxxx>, Nicola Vetrini <nicola.vetrini@xxxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Sat, 01 Jun 2024 12:57:35 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 27/05/2024 2:44 pm, Jan Beulich wrote:
>> --- a/xen/include/xen/bitops.h
>> +++ b/xen/include/xen/bitops.h
>> @@ -60,6 +60,14 @@ static always_inline __pure unsigned int ffsl(unsigned
>> long x)
>> #endif
>> }
>>
>> +static always_inline __pure unsigned int ffs64(uint64_t x)
>> +{
>> + if ( BITS_PER_LONG == 64 )
> In principle >= 64 would be okay here, and hence I'd prefer if we used that
> less strict form. Yet I'm not going to insist.
Sorry - I'd meant to include this, but I've just found it still local to
my dev branch.
~Andrew
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