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SubjectRe: [PATCH 1/3] paravirt,xen: remove xen_patch()
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On 10/08/17 18:29, Peter Zijlstra wrote:
> On Thu, Aug 10, 2017 at 06:24:53PM +0200, Peter Zijlstra wrote:
>> -ENTRY(xen_irq_enable_direct)
>> - FRAME_BEGIN
>> - /* Unmask events */
>> - movb $0, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_mask
>> -
>> - /*
>> - * Preempt here doesn't matter because that will deal with any
>> - * pending interrupts. The pending check may end up being run
>> - * on the wrong CPU, but that doesn't hurt.
>> - */
>> -
>> - /* Test for pending */
>> - testb $0xff, PER_CPU_VAR(xen_vcpu_info) + XEN_vcpu_info_pending
>> - jz 1f
>> -
>> -2: call check_events
>> -1:
>> -ENDPATCH(xen_irq_enable_direct)
>> - FRAME_END
>> - ret
>> - ENDPROC(xen_irq_enable_direct)
>> - RELOC(xen_irq_enable_direct, 2b+1)
>
> Oh my bad, part of that is still used.
>
> arch/x86/xen/enlighten_pv.c: pv_irq_ops.irq_enable = __PV_IS_CALLEE_SAVE(xen_irq_enable_direct);
>
> It just needs cleanups for the ENDPATCH and such.

Ah yes, of course.


Juergen

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