RE: [v4 3/3] x86, irq: Define a global vector for VT-d Posted-Interrupts
> -Original Message-
> From: Thomas Gleixner [mailto:t...@linutronix.de]
> Sent: Friday, May 15, 2015 9:27 PM
> To: Wu, Feng
> Cc: mi...@redhat.com; h...@zytor.com; linux-kernel@vger.kernel.org;
> jiang@linux.intel.com
> Subject: Re: [v4 3/3] x86, irq: Define a global vector for VT-d
> Posted-Interrupts
>
> On Thu, 30 Apr 2015, Feng Wu wrote:
> > #ifdef CONFIG_HAVE_KVM
> > +void (*wakeup_handler_callback)(void);
> > +EXPORT_SYMBOL_GPL(wakeup_handler_callback);
>
> The matching entry in a header file is going to come later again?
I will add the declaration in a header file in this patch.
>
> > /*
> > * Handler for POSTED_INTERRUPT_VECTOR.
> > */
> > @@ -256,6 +259,30 @@ __visible void smp_kvm_posted_intr_ipi(struct
> pt_regs *regs)
> >
> > set_irq_regs(old_regs);
> > }
> > +
> > +/*
> > + * Handler for POSTED_INTERRUPT_WAKEUP_VECTOR.
> > + */
> > +__visible void smp_kvm_posted_intr_wakeup_ipi(struct pt_regs *regs)
> > +{
> > + struct pt_regs *old_regs = set_irq_regs(regs);
> > +
> > + ack_APIC_irq();
> > +
> > + irq_enter();
> > +
> > + exit_idle();
>
> entering_ack_irq() please
Good idea!
Thanks,
Feng
>
> > + inc_irq_stat(kvm_posted_intr_wakeup_ipis);
> > +
> > + if (wakeup_handler_callback)
> > + wakeup_handler_callback();
> > +
> > + irq_exit();
> > +
> > + set_irq_regs(old_regs);
> > +}
>
> Thanks,
>
> tglx
--
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RE: [v4 3/3] x86, irq: Define a global vector for VT-d Posted-Interrupts
-Original Message-
From: Thomas Gleixner [mailto:t...@linutronix.de]
Sent: Friday, May 15, 2015 9:27 PM
To: Wu, Feng
Cc: mi...@redhat.com; h...@zytor.com; linux-kernel@vger.kernel.org;
jiang@linux.intel.com
Subject: Re: [v4 3/3] x86, irq: Define a global vector for VT-d
Posted-Interrupts
On Thu, 30 Apr 2015, Feng Wu wrote:
#ifdef CONFIG_HAVE_KVM
+void (*wakeup_handler_callback)(void);
+EXPORT_SYMBOL_GPL(wakeup_handler_callback);
The matching entry in a header file is going to come later again?
I will add the declaration in a header file in this patch.
/*
* Handler for POSTED_INTERRUPT_VECTOR.
*/
@@ -256,6 +259,30 @@ __visible void smp_kvm_posted_intr_ipi(struct
pt_regs *regs)
set_irq_regs(old_regs);
}
+
+/*
+ * Handler for POSTED_INTERRUPT_WAKEUP_VECTOR.
+ */
+__visible void smp_kvm_posted_intr_wakeup_ipi(struct pt_regs *regs)
+{
+ struct pt_regs *old_regs = set_irq_regs(regs);
+
+ ack_APIC_irq();
+
+ irq_enter();
+
+ exit_idle();
entering_ack_irq() please
Good idea!
Thanks,
Feng
+ inc_irq_stat(kvm_posted_intr_wakeup_ipis);
+
+ if (wakeup_handler_callback)
+ wakeup_handler_callback();
+
+ irq_exit();
+
+ set_irq_regs(old_regs);
+}
Thanks,
tglx
--
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Re: [v4 3/3] x86, irq: Define a global vector for VT-d Posted-Interrupts
On Thu, 30 Apr 2015, Feng Wu wrote:
> #ifdef CONFIG_HAVE_KVM
> +void (*wakeup_handler_callback)(void);
> +EXPORT_SYMBOL_GPL(wakeup_handler_callback);
The matching entry in a header file is going to come later again?
> /*
> * Handler for POSTED_INTERRUPT_VECTOR.
> */
> @@ -256,6 +259,30 @@ __visible void smp_kvm_posted_intr_ipi(struct pt_regs
> *regs)
>
> set_irq_regs(old_regs);
> }
> +
> +/*
> + * Handler for POSTED_INTERRUPT_WAKEUP_VECTOR.
> + */
> +__visible void smp_kvm_posted_intr_wakeup_ipi(struct pt_regs *regs)
> +{
> + struct pt_regs *old_regs = set_irq_regs(regs);
> +
> + ack_APIC_irq();
> +
> + irq_enter();
> +
> + exit_idle();
entering_ack_irq() please
> + inc_irq_stat(kvm_posted_intr_wakeup_ipis);
> +
> + if (wakeup_handler_callback)
> + wakeup_handler_callback();
> +
> + irq_exit();
> +
> + set_irq_regs(old_regs);
> +}
Thanks,
tglx
--
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Please read the FAQ at http://www.tux.org/lkml/
Re: [v4 3/3] x86, irq: Define a global vector for VT-d Posted-Interrupts
On Thu, 30 Apr 2015, Feng Wu wrote:
#ifdef CONFIG_HAVE_KVM
+void (*wakeup_handler_callback)(void);
+EXPORT_SYMBOL_GPL(wakeup_handler_callback);
The matching entry in a header file is going to come later again?
/*
* Handler for POSTED_INTERRUPT_VECTOR.
*/
@@ -256,6 +259,30 @@ __visible void smp_kvm_posted_intr_ipi(struct pt_regs
*regs)
set_irq_regs(old_regs);
}
+
+/*
+ * Handler for POSTED_INTERRUPT_WAKEUP_VECTOR.
+ */
+__visible void smp_kvm_posted_intr_wakeup_ipi(struct pt_regs *regs)
+{
+ struct pt_regs *old_regs = set_irq_regs(regs);
+
+ ack_APIC_irq();
+
+ irq_enter();
+
+ exit_idle();
entering_ack_irq() please
+ inc_irq_stat(kvm_posted_intr_wakeup_ipis);
+
+ if (wakeup_handler_callback)
+ wakeup_handler_callback();
+
+ irq_exit();
+
+ set_irq_regs(old_regs);
+}
Thanks,
tglx
--
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