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Re: [PATCH v5 02/16] xen: Remove __{BIG,LITTLE}_ENDIAN_BITFIELD
- To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 31 Mar 2025 09:42:15 +0200
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- Cc: Anthony PERARD <anthony.perard@xxxxxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Julien Grall <julien@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx>, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>, "Daniel P . Smith" <dpsmith@xxxxxxxxxxxxxxxxxxxx>, Lin Liu <lin.liu@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Mon, 31 Mar 2025 07:42:23 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 28.03.2025 14:44, Andrew Cooper wrote:
> There is a singular user. It's unlikely we'll gain a big-endian build of Xen,
> but it's far more unlikely that bitfields will differ from main endianness.
Just one point: While endian-ness in general is dictated by hardware, endian-
ness of bitfields is entirely a psABI thing, aiui. Hence tying both together
(beyond the latter defaulting to the former) doesn't seem quite appropriate
to me.
> I'm tempted to simply drop the logic in maptrack_node. If any big-endian
> build of Xen came along, that's probably the least of it's worries.
As long as it's not obviously broken, I'd prefer to keep such. While it may
not be a primary worry, it's still one less of all the worries then.
Jan
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