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From: Pavel Fedin <p.fedin@samsung.com>
To: 'Marc Zyngier' <marc.zyngier@arm.com>,
	'Andre Przywara' <Andre.Przywara@arm.com>,
	christoffer.dall@linaro.org
Cc: kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org
Subject: RE: [PATCH 00/13] arm64: KVM: GICv3 ITS emulation
Date: Mon, 08 Jun 2015 13:54:09 +0300	[thread overview]
Message-ID: <02ae01d0a1d9$732d2ce0$598786a0$@samsung.com> (raw)
In-Reply-To: <557550F0.5070106@arm.com>

 Hi!

> I'm afraid this is not enough. A write to GICR_TRANSLATER (DID+EID)
> results in a (LPI,CPU) pair. Can you easily express the CPU part in
> irqfd (this is a genuine question, I'm not familiar enough with that
> part of the core)?

 But... As far as i could understand, LPI is added to a collection as a part of setup. And
collection actually represents a destination CPU, doesn't it? And we can't have multiple
LPIs sharing the same number and going to different CPUs. Or am i wrong? Unfortunately i
don't have GICv3 arch reference manual.

> Another concern
> would be the support of GICv4, which relies on the command queue
> handling to be handled in the kernel

 Wow, i didn't know about GICv4.

Kind regards,
Pavel Fedin
Expert Engineer
Samsung Electronics Research center Russia



  reply	other threads:[~2015-06-08 10:54 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-05-29  9:53 [PATCH 00/13] arm64: KVM: GICv3 ITS emulation Andre Przywara
2015-05-29  9:53 ` [PATCH 01/13] KVM: arm/arm64: VGIC: don't track used LRs in the distributor Andre Przywara
2015-05-29  9:53 ` [PATCH 02/13] KVM: extend struct kvm_msi to hold a 32-bit device ID Andre Przywara
2015-06-09  8:49   ` Eric Auger
2015-06-28 19:12   ` Christoffer Dall
2015-06-29 14:53     ` Andre Przywara
2015-06-29 15:02       ` Christoffer Dall
2015-05-29  9:53 ` [PATCH 03/13] KVM: arm/arm64: add emulation model specific destroy function Andre Przywara
2015-06-09  8:51   ` Eric Auger
2015-06-28 19:14   ` Christoffer Dall
2015-05-29  9:53 ` [PATCH 04/13] KVM: arm64: Introduce new MMIO region for the ITS base address Andre Przywara
2015-06-09  8:52   ` Eric Auger
2015-06-11 15:12     ` Andre Przywara
2015-05-29  9:53 ` [PATCH 05/13] KVM: arm64: handle ITS related GICv3 redistributor registers Andre Przywara
2015-06-09  8:52   ` Eric Auger
2015-06-12 17:03     ` Andre Przywara
2015-05-29  9:53 ` [PATCH 06/13] KVM: arm64: introduce ITS emulation file with stub functions Andre Przywara
2015-06-09  9:23   ` Eric Auger
2015-05-29  9:53 ` [PATCH 07/13] KVM: arm64: implement basic ITS register handlers Andre Przywara
2015-06-09 13:34   ` Eric Auger
2015-06-28 19:36   ` Christoffer Dall
2015-05-29  9:53 ` [PATCH 08/13] KVM: arm64: add data structures to model ITS interrupt translation Andre Przywara
2015-06-09 15:59   ` Eric Auger
2015-05-29  9:53 ` [PATCH 09/13] KVM: arm64: handle pending bit for LPIs in ITS emulation Andre Przywara
2015-06-09 15:59   ` Eric Auger
2015-06-11 15:46     ` Andre Przywara
2015-06-11 16:01       ` Marc Zyngier
2015-06-11 18:24         ` Eric Auger
2015-05-29  9:53 ` [PATCH 10/13] KVM: arm64: sync LPI properties and status between guest and KVM Andre Przywara
2015-06-11 17:44   ` Eric Auger
2015-06-28 19:33   ` Christoffer Dall
2015-05-29  9:53 ` [PATCH 11/13] KVM: arm64: implement ITS command queue command handlers Andre Przywara
2015-06-12 15:28   ` Eric Auger
2015-06-28 19:41   ` Christoffer Dall
2015-07-03 15:57     ` Andre Przywara
2015-07-03 21:01       ` Christoffer Dall
2015-05-29  9:53 ` [PATCH 12/13] KVM: arm64: implement MSI injection in ITS emulation Andre Przywara
2015-06-11 17:43   ` Eric Auger
2015-07-06 16:46     ` Andre Przywara
2015-07-07  8:13       ` Christoffer Dall
2015-05-29  9:53 ` [PATCH 13/13] KVM: arm64: enable ITS emulation as a virtual MSI controller Andre Przywara
2015-06-12 16:05   ` Eric Auger
2015-06-18  8:43   ` Eric Auger
2015-06-18 14:22     ` Andre Przywara
2015-06-18 15:03       ` Pavel Fedin
2015-06-18 19:20         ` Andre Przywara
2015-06-08  6:53 ` [PATCH 00/13] arm64: KVM: GICv3 ITS emulation Pavel Fedin
2015-06-08  8:23   ` Marc Zyngier
2015-06-08 10:54     ` Pavel Fedin [this message]
2015-06-08 17:13       ` Marc Zyngier
2015-06-09  8:12       ` Eric Auger
2015-06-10 12:18 ` Pavel Fedin

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