From: Stefano Stabellini <sstabellini@kernel.org>
To: Andre Przywara <andre.przywara@arm.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>,
Vijay Kilari <vijay.kilari@gmail.com>,
Vijaya Kumar K <Vijaya.Kumar@caviumnetworks.com>,
Julien Grall <julien.grall@arm.com>,
xen-devel@lists.xenproject.org,
Shanker Donthineni <shankerd@codeaurora.org>
Subject: Re: [PATCH v10 03/32] ARM: vGIC: move irq_to_pending() calls under the VGIC VCPU lock
Date: Tue, 6 Jun 2017 11:46:30 -0700 (PDT) [thread overview]
Message-ID: <alpine.DEB.2.10.1706061140520.15791@sstabellini-ThinkPad-X260> (raw)
In-Reply-To: <ec1081e5-93ea-ba4c-d7ef-a55416b50375@arm.com>
On Tue, 6 Jun 2017, Andre Przywara wrote:
> Maybe we should consider to merge this one for 4.9 still,
> as currently enabling the ITS in .config and running it on an ITS
> machine will fail to boot Dom0.
Here, you are talking about this patch, patch #3, right?
Although it should be "safe", it touches a lot of common code. I think
it is too risky to commit it now to fix an experimental feature. I would
rather wait until it is committed to staging in the 4.10 dev window,
then backport it.
> >> - if ( p->desc != NULL )
> >> + desc = p->desc;
> >> + spin_unlock_irqrestore(&v_target->arch.vgic.lock, flags);
> >> +
> >> + if ( desc != NULL )
> >> {
> >> - spin_lock_irqsave(&p->desc->lock, flags);
> >> - p->desc->handler->disable(p->desc);
> >> - spin_unlock_irqrestore(&p->desc->lock, flags);
> >> + spin_lock_irqsave(&desc->lock, flags);
> >> + desc->handler->disable(desc);
> >> + spin_unlock_irqrestore(&desc->lock, flags);
> >> }
> >> i++;
> >> }
> >> @@ -349,9 +368,9 @@ void vgic_enable_irqs(struct vcpu *v, uint32_t r,
> >> int n)
> >> while ( (i = find_next_bit(&mask, 32, i)) < 32 ) {
> >> irq = i + (32 * n);
> >> v_target = vgic_get_target_vcpu(v, irq);
> >> + spin_lock_irqsave(&v_target->arch.vgic.lock, flags);
> >> p = irq_to_pending(v_target, irq);
> >> set_bit(GIC_IRQ_GUEST_ENABLED, &p->status);
> >> - spin_lock_irqsave(&v_target->arch.vgic.lock, flags);
> >> if ( !list_empty(&p->inflight) &&
> >> !test_bit(GIC_IRQ_GUEST_VISIBLE, &p->status) )
> >> gic_raise_guest_irq(v_target, irq, p->priority);
> >> spin_unlock_irqrestore(&v_target->arch.vgic.lock, flags);
> >> @@ -460,7 +479,7 @@ void vgic_clear_pending_irqs(struct vcpu *v)
> >> void vgic_vcpu_inject_irq(struct vcpu *v, unsigned int virq)
> >> {
> >> uint8_t priority;
> >> - struct pending_irq *iter, *n = irq_to_pending(v, virq);
> >> + struct pending_irq *iter, *n;
> >> unsigned long flags;
> >> bool running;
> >>
> >> @@ -468,6 +487,8 @@ void vgic_vcpu_inject_irq(struct vcpu *v, unsigned
> >> int virq)
> >>
> >> spin_lock_irqsave(&v->arch.vgic.lock, flags);
> >>
> >> + n = irq_to_pending(v, virq);
> >> +
> >> /* vcpu offline */
> >> if ( test_bit(_VPF_down, &v->pause_flags) )
> >> {
> >>
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next prev parent reply other threads:[~2017-06-06 18:46 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-26 17:35 [PATCH v10 00/32] arm64: Dom0 ITS emulation Andre Przywara
2017-05-26 17:35 ` [PATCH v10 01/32] ARM: vGIC: avoid rank lock when reading priority Andre Przywara
2017-05-30 10:47 ` Julien Grall
2017-05-30 21:39 ` Stefano Stabellini
2017-05-31 10:42 ` Julien Grall
2017-06-02 17:44 ` Julien Grall
2017-06-06 17:06 ` Andre Przywara
2017-06-06 17:11 ` Julien Grall
2017-06-06 17:20 ` Andre Przywara
2017-06-06 17:21 ` Julien Grall
2017-06-06 18:39 ` Stefano Stabellini
2017-05-26 17:35 ` [PATCH v10 02/32] ARM: GICv3: setup number of LPI bits for a GICv3 guest Andre Przywara
2017-05-30 10:54 ` Julien Grall
2017-06-06 10:19 ` Andre Przywara
2017-05-26 17:35 ` [PATCH v10 03/32] ARM: vGIC: move irq_to_pending() calls under the VGIC VCPU lock Andre Przywara
2017-05-30 11:08 ` Julien Grall
2017-05-30 21:46 ` Stefano Stabellini
2017-05-31 10:44 ` Julien Grall
2017-06-06 17:24 ` Andre Przywara
2017-06-06 18:46 ` Stefano Stabellini [this message]
2017-06-07 10:49 ` Andre Przywara
2017-05-26 17:35 ` [PATCH v10 04/32] ARM: vGIC: rework gic_remove_from_queues() Andre Przywara
2017-05-30 11:15 ` Julien Grall
2017-05-26 17:35 ` [PATCH v10 05/32] ARM: vGIC: introduce gic_remove_irq() Andre Przywara
2017-05-30 11:31 ` Julien Grall
2017-06-06 10:19 ` Andre Przywara
2017-05-26 17:35 ` [PATCH v10 06/32] ARM: GIC: Add checks for NULL pointer pending_irq's Andre Przywara
2017-05-30 11:38 ` Julien Grall
2017-06-06 10:19 ` Andre Przywara
2017-06-07 11:19 ` Julien Grall
2017-05-26 17:35 ` [PATCH v10 07/32] ARM: GICv3: introduce separate pending_irq structs for LPIs Andre Przywara
2017-05-26 17:35 ` [PATCH v10 08/32] ARM: GIC: export and extend vgic_init_pending_irq() Andre Przywara
2017-05-26 17:35 ` [PATCH v10 09/32] ARM: vGIC: cache virtual LPI priority in struct pending_irq Andre Przywara
2017-05-26 17:35 ` [PATCH v10 10/32] ARM: vGIC: add LPI VCPU ID to " Andre Przywara
2017-05-26 17:35 ` [PATCH v10 11/32] ARM: GICv3: forward pending LPIs to guests Andre Przywara
2017-05-30 11:56 ` Julien Grall
2017-05-30 22:07 ` Stefano Stabellini
2017-05-31 11:09 ` Julien Grall
2017-05-31 17:56 ` Stefano Stabellini
2017-05-31 18:39 ` Julien Grall
2017-05-26 17:35 ` [PATCH v10 12/32] ARM: GICv3: enable ITS and LPIs on the host Andre Przywara
2017-05-30 11:58 ` Julien Grall
2017-05-26 17:35 ` [PATCH v10 13/32] ARM: vGICv3: handle virtual LPI pending and property tables Andre Przywara
2017-05-26 17:35 ` [PATCH v10 14/32] ARM: introduce vgic_access_guest_memory() Andre Przywara
2017-05-26 17:35 ` [PATCH v10 15/32] ARM: vGICv3: re-use vgic_reg64_check_access Andre Przywara
2017-05-26 17:35 ` [PATCH v10 16/32] ARM: vGIC: advertise LPI support Andre Przywara
2017-05-30 12:59 ` Julien Grall
2017-05-26 17:35 ` [PATCH v10 17/32] ARM: vITS: add command handling stub and MMIO emulation Andre Przywara
2017-06-01 18:13 ` Julien Grall
2017-06-08 9:57 ` Julien Grall
2017-05-26 17:35 ` [PATCH v10 18/32] ARM: vITS: introduce translation table walks Andre Przywara
2017-06-02 16:25 ` Julien Grall
2017-06-08 9:35 ` Julien Grall
2017-06-08 9:45 ` Andre Przywara
2017-05-26 17:35 ` [PATCH v10 19/32] ARM: vITS: provide access to struct pending_irq Andre Przywara
2017-06-02 16:32 ` Julien Grall
2017-06-02 16:45 ` Julien Grall
2017-06-06 10:19 ` Andre Przywara
2017-06-06 11:13 ` Julien Grall
2017-05-26 17:35 ` [PATCH v10 20/32] ARM: vITS: handle INT command Andre Przywara
2017-06-02 16:37 ` Julien Grall
2017-05-26 17:35 ` [PATCH v10 21/32] ARM: vITS: handle MAPC command Andre Przywara
2017-05-26 17:35 ` [PATCH v10 22/32] ARM: vITS: handle CLEAR command Andre Przywara
2017-06-02 16:40 ` Julien Grall
2017-05-26 17:35 ` [PATCH v10 23/32] ARM: vITS: handle MAPD command Andre Przywara
2017-06-02 16:46 ` Julien Grall
2017-05-26 17:35 ` [PATCH v10 24/32] ARM: GICv3: handle unmapped LPIs Andre Przywara
2017-06-02 16:55 ` Julien Grall
2017-06-02 20:45 ` Stefano Stabellini
2017-06-08 9:45 ` Julien Grall
2017-06-08 13:51 ` Andre Przywara
2017-05-26 17:35 ` [PATCH v10 25/32] ARM: vITS: handle MAPTI/MAPI command Andre Przywara
2017-06-02 17:12 ` Julien Grall
2017-06-07 17:49 ` Andre Przywara
2017-06-12 16:33 ` Julien Grall
2017-06-09 11:17 ` Andre Przywara
2017-06-09 19:14 ` Stefano Stabellini
2017-06-12 16:10 ` Andre Przywara
2017-05-26 17:35 ` [PATCH v10 26/32] ARM: vITS: handle MOVI command Andre Przywara
2017-05-30 22:35 ` Stefano Stabellini
2017-05-31 11:23 ` Julien Grall
2017-05-31 17:53 ` Stefano Stabellini
2017-05-31 18:49 ` Julien Grall
2017-06-02 17:17 ` Julien Grall
2017-06-02 20:36 ` Stefano Stabellini
2017-05-26 17:35 ` [PATCH v10 27/32] ARM: vITS: handle DISCARD command Andre Przywara
2017-06-02 17:21 ` Julien Grall
2017-05-26 17:35 ` [PATCH v10 28/32] ARM: vITS: handle INV command Andre Przywara
2017-05-30 22:23 ` Stefano Stabellini
2017-05-26 17:35 ` [PATCH v10 29/32] ARM: vITS: handle INVALL command Andre Przywara
2017-06-02 17:27 ` Julien Grall
2017-05-26 17:35 ` [PATCH v10 30/32] ARM: vITS: increase mmio_count for each ITS Andre Przywara
2017-05-26 17:35 ` [PATCH v10 31/32] ARM: vITS: create and initialize virtual ITSes for Dom0 Andre Przywara
2017-06-02 17:31 ` Julien Grall
2017-05-26 17:35 ` [PATCH v10 32/32] ARM: vITS: create ITS subnodes for Dom0 DT Andre Przywara
2017-06-02 17:33 ` Julien Grall
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