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Re: [PATCH 0/5] xen/wait: Improvements
- To: Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Volodymyr Babchuk <volodymyr_babchuk@xxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Mon, 18 Jul 2022 13:11:45 +0200
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- Cc: Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Delivery-date: Mon, 18 Jul 2022 11:11:56 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 18.07.2022 09:18, Andrew Cooper wrote:
> This started out as patch 2 for a different task, and quickly identified some
> technical debt, long overdue for cleaning up.
>
> Andrew Cooper (5):
> xen/wait: Drop vestigial remnants of TRAP_regs_partial
> xen/wait: Extend the description of how this logic actually works
> xen/wait: Minor asm improvements
> xen/wait: Use relative stack adjustments
> xen/wait: Remove VCPU_AFFINITY_WAIT
While going through this series I came to notice that we build wait.c even
on Arm, and I couldn't convince myself that wait_event() is actually not
reachable there when e.g. there's an Arm-specific vm_event.c. I would
generally prefer if non-functioning code paths were actually compiled out.
Thoughts?
Jan
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