From: Marc Zyngier <maz@kernel.org>
To: Zenghui Yu <yuzenghui@huawei.com>
Cc: <kvmarm@lists.cs.columbia.edu>, <linux-kernel@vger.kernel.org>,
Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>,
Jason Cooper <jason@lakedaemon.net>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH 31/35] irqchip/gic-v4.1: Eagerly vmap vPEs
Date: Mon, 30 Sep 2019 10:23:55 +0100 [thread overview]
Message-ID: <ce8d5af19b6c62985bdfc9d57ac659f2@www.loen.fr> (raw)
In-Reply-To: <82576f6e-3736-8069-bbf2-7744fbea9ed2@huawei.com>
On 2019-09-28 04:11, Zenghui Yu wrote:
> On 2019/9/24 2:26, Marc Zyngier wrote:
>> Now that we have HW-accelerated SGIs being delivered to VPEs, it
>> becomes required to map the VPEs on all ITSs instead of relying
>> on the lazy approach that we would use when using the ITS-list
>> mechanism.
>> Signed-off-by: Marc Zyngier <maz@kernel.org>
>> ---
>> drivers/irqchip/irq-gic-v3-its.c | 39
>> +++++++++++++++++++++++++-------
>> 1 file changed, 31 insertions(+), 8 deletions(-)
>> diff --git a/drivers/irqchip/irq-gic-v3-its.c
>> b/drivers/irqchip/irq-gic-v3-its.c
>> index 4aae9582182b..a1e8c4c2598a 100644
>> --- a/drivers/irqchip/irq-gic-v3-its.c
>> +++ b/drivers/irqchip/irq-gic-v3-its.c
>> @@ -1417,12 +1417,31 @@ static int its_irq_set_irqchip_state(struct
>> irq_data *d,
>> return 0;
>> }
>> +/*
>> + * Two favourable cases:
>> + *
>> + * (a) Either we have a GICv4.1, and all vPEs have to be mapped at
>> all times
>> + * for vSGI delivery
>> + *
>> + * (b) Or the ITSs do not use a list map, meaning that VMOVP is
>> cheap enough
>> + * and we're better off mapping all VPEs always
>> + *
>> + * If neither (a) nor (b) is true, then we map VLPIs on demand.
> ^^^^^
> vPEs
Yes, well caught.
Thanks,
M.
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2019-09-30 9:24 UTC|newest]
Thread overview: 62+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-23 18:25 [PATCH 00/35] irqchip/gic-v4: GICv4.1 architecture support Marc Zyngier
2019-09-23 18:25 ` [PATCH 01/35] KVM: arm64: vgic-v4: Move the GICv4 residency flow to be driven by vcpu_load/put Marc Zyngier
2019-09-23 18:25 ` [PATCH 02/35] irqchip/gic-v3-its: Factor out wait_for_syncr primitive Marc Zyngier
2019-09-24 8:58 ` Andrew Murray
2019-09-23 18:25 ` [PATCH 03/35] irqchip/gic-v3-its: Allow LPI invalidation via the DirectLPI interface Marc Zyngier
2019-09-26 14:57 ` Zenghui Yu
2019-09-26 15:34 ` Marc Zyngier
2019-09-26 16:17 ` Marc Zyngier
2019-09-27 6:59 ` Zenghui Yu
2019-09-23 18:25 ` [PATCH 04/35] irqchip/gic-v3: Detect GICv4.1 supporting RVPEID Marc Zyngier
2019-09-24 10:24 ` Andrew Murray
2019-09-24 10:49 ` Marc Zyngier
2019-09-24 11:00 ` Andrew Murray
2019-09-24 11:18 ` Marc Zyngier
2019-09-23 18:25 ` [PATCH 05/35] irqchip/gic-v3: Add GICv4.1 VPEID size discovery Marc Zyngier
2019-09-24 10:49 ` Andrew Murray
2019-09-24 11:00 ` Marc Zyngier
2019-09-23 18:25 ` [PATCH 06/35] irqchip/gic-v3-its: Make is_v4 use a TYPER copy Marc Zyngier
2019-09-23 18:25 ` [PATCH 07/35] irqchip/gic-v3-its: Kill its->ite_size and use TYPER copy instead Marc Zyngier
2019-09-23 18:25 ` [PATCH 08/35] irqchip/gic-v3-its: Kill its->device_ids " Marc Zyngier
2019-09-23 18:25 ` [PATCH 09/35] irqchip/gic-v3-its: Add get_vlpi_map() helper Marc Zyngier
2019-09-23 18:25 ` [PATCH 10/35] irqchip/gic-v4.1: VPE table (aka GICR_VPROPBASER) allocation Marc Zyngier
2019-09-25 13:04 ` Zenghui Yu
2019-09-25 14:41 ` Marc Zyngier
2019-09-25 17:14 ` Marc Zyngier
2019-09-26 15:19 ` Zenghui Yu
2019-09-26 15:57 ` Marc Zyngier
2019-09-26 16:27 ` Marc Zyngier
2019-09-27 2:01 ` Zenghui Yu
2019-09-27 1:59 ` Zenghui Yu
2019-09-23 18:25 ` [PATCH 11/35] irqchip/gic-v4.1: Implement the v4.1 flavour of VMAPP Marc Zyngier
2019-09-23 18:25 ` [PATCH 12/35] irqchip/gic-v4.1: Don't use the VPE proxy if RVPEID is set Marc Zyngier
2019-09-23 18:25 ` [PATCH 13/35] irqchip/gic-v4.1: Implement the v4.1 flavour of VMOVP Marc Zyngier
2019-09-23 18:25 ` [PATCH 14/35] irqchip/gic-v4.1: Plumb skeletal VPE irqchip Marc Zyngier
2019-09-23 18:25 ` [PATCH 15/35] irqchip/gic-v4.1: Add mask/unmask doorbell callbacks Marc Zyngier
2019-09-23 18:25 ` [PATCH 16/35] irqchip/gic-v4.1: Add VPE residency callback Marc Zyngier
2019-09-23 18:25 ` [PATCH 17/35] irqchip/gic-v4.1: Add VPE eviction callback Marc Zyngier
2019-09-23 18:25 ` [PATCH 18/35] irqchip/gic-v4.1: Add VPE INVALL callback Marc Zyngier
2019-09-23 18:25 ` [PATCH 19/35] irqchip/gic-v4.1: Suppress per-VLPI doorbell Marc Zyngier
2019-09-23 18:25 ` [PATCH 20/35] irqchip/gic-v4.1: Allow direct invalidation of VLPIs Marc Zyngier
2019-09-28 2:02 ` Zenghui Yu
2019-09-30 9:20 ` Marc Zyngier
2019-09-30 9:40 ` Zenghui Yu
2019-09-23 18:25 ` [PATCH 21/35] irqchip/gic-v4.1: Advertise support v4.1 to KVM Marc Zyngier
2019-09-23 18:25 ` [PATCH 22/35] irqchip/gic-v4.1: Map the ITS SGIR register page Marc Zyngier
2019-09-23 18:25 ` [PATCH 23/35] irqchip/gic-v4.1: Plumb skeletal VSGI irqchip Marc Zyngier
2019-09-23 18:25 ` [PATCH 24/35] irqchip/gic-v4.1: Add initial SGI configuration Marc Zyngier
2019-09-28 2:20 ` Zenghui Yu
2019-09-28 3:07 ` Zenghui Yu
2019-09-23 18:25 ` [PATCH 25/35] irqchip/gic-v4.1: Plumb mask/unmask SGI callbacks Marc Zyngier
2019-09-23 18:25 ` [PATCH 26/35] irqchip/gic-v4.1: Plumb get/set_irqchip_state " Marc Zyngier
2019-09-23 18:25 ` [PATCH 27/35] irqchip/gic-v4.1: Plumb set_vcpu_affinity " Marc Zyngier
2019-09-23 18:25 ` [PATCH 28/35] irqchip/gic-v4.1: Move doorbell management to the GICv4 abstraction layer Marc Zyngier
2019-09-23 18:26 ` [PATCH 29/35] irqchip/gic-v4.1: Add VSGI allocation/teardown Marc Zyngier
2019-09-23 18:26 ` [PATCH 30/35] irqchip/gic-v4.1: Add VSGI property setup Marc Zyngier
2019-09-23 18:26 ` [PATCH 31/35] irqchip/gic-v4.1: Eagerly vmap vPEs Marc Zyngier
2019-09-28 3:11 ` Zenghui Yu
2019-09-30 9:23 ` Marc Zyngier [this message]
2019-09-23 18:26 ` [PATCH 32/35] KVM: arm64: GICv4.1: Let doorbells be auto-enabled Marc Zyngier
2019-09-23 18:26 ` [PATCH 33/35] KVM: arm64: GICv4.1: Add direct injection capability to SGI registers Marc Zyngier
2019-09-23 18:26 ` [PATCH 34/35] KVM: arm64: GICv4.1: Configure SGIs as HW interrupts Marc Zyngier
2019-09-23 18:26 ` [PATCH 35/35] KVM: arm64: GICv4.1: Expose HW-based SGIs in debugfs Marc Zyngier
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