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From: Marc Zyngier <marc.zyngier@arm.com>
To: Christoffer Dall <christoffer.dall@linaro.org>,
	kvmarm@lists.cs.columbia.edu,
	linux-arm-kernel@lists.infradead.org, kvm@vger.kernel.org
Subject: Re: [PATCH 0/9] Rework architected timer and fix UEFI reset
Date: Thu, 03 Sep 2015 18:10:56 +0100	[thread overview]
Message-ID: <55E87F20.40900@arm.com> (raw)
In-Reply-To: <1440942866-23802-1-git-send-email-christoffer.dall@linaro.org>

Hi Christoffer,

On 30/08/15 14:54, Christoffer Dall wrote:
> The architected timer integration with the vgic had some shortcomings in
> that certain guests (one being UEFI) weren't fully supported.
> 
> In fixing this I also found that we are scheduling the hrtimer for the
> virtual timer way too often, with a potential performance overhead.
> 
> This series tries to address these problems in proviging level-triggered
> semantics for the arch timer and vgic intergration and seeks to clarify
> the behavior when setting/clearing the active state on the physical
> distributor.
> 
> Series based on kvmarm/next and also available at:
> https://git.linaro.org/people/christoffer.dall/linux-kvm-arm.git timer-rework

I'm quite pleased with the overall look of this series. It fixes a
number of issues that have been around for a while, plus some others
I've recently introduced...

Now, I fear this is probably too big a series to be shipped as a fix for
4.3. Can you come up with a minimal series that we could merge quickly
(I'm thinking patches 7 and 9), and leave the rest for the following
merge window?

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...

WARNING: multiple messages have this Message-ID (diff)
From: marc.zyngier@arm.com (Marc Zyngier)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/9] Rework architected timer and fix UEFI reset
Date: Thu, 03 Sep 2015 18:10:56 +0100	[thread overview]
Message-ID: <55E87F20.40900@arm.com> (raw)
In-Reply-To: <1440942866-23802-1-git-send-email-christoffer.dall@linaro.org>

Hi Christoffer,

On 30/08/15 14:54, Christoffer Dall wrote:
> The architected timer integration with the vgic had some shortcomings in
> that certain guests (one being UEFI) weren't fully supported.
> 
> In fixing this I also found that we are scheduling the hrtimer for the
> virtual timer way too often, with a potential performance overhead.
> 
> This series tries to address these problems in proviging level-triggered
> semantics for the arch timer and vgic intergration and seeks to clarify
> the behavior when setting/clearing the active state on the physical
> distributor.
> 
> Series based on kvmarm/next and also available at:
> https://git.linaro.org/people/christoffer.dall/linux-kvm-arm.git timer-rework

I'm quite pleased with the overall look of this series. It fixes a
number of issues that have been around for a while, plus some others
I've recently introduced...

Now, I fear this is probably too big a series to be shipped as a fix for
4.3. Can you come up with a minimal series that we could merge quickly
(I'm thinking patches 7 and 9), and leave the rest for the following
merge window?

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...

  parent reply	other threads:[~2015-09-03 17:10 UTC|newest]

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-30 13:54 [PATCH 0/9] Rework architected timer and fix UEFI reset Christoffer Dall
2015-08-30 13:54 ` Christoffer Dall
2015-08-30 13:54 ` [PATCH 1/9] KVM: Add kvm_arch_vcpu_{un}blocking callbacks Christoffer Dall
2015-08-30 13:54   ` Christoffer Dall
2015-09-03 14:21   ` Marc Zyngier
2015-09-03 14:21     ` Marc Zyngier
2015-09-04 13:50   ` Eric Auger
2015-09-04 13:50     ` Eric Auger
2015-09-04 14:50     ` Christoffer Dall
2015-09-04 14:50       ` Christoffer Dall
2015-08-30 13:54 ` [PATCH 2/9] arm/arm64: KVM: arch_timer: Only schedule soft timer on vcpu_block Christoffer Dall
2015-08-30 13:54   ` Christoffer Dall
2015-09-03 14:43   ` Marc Zyngier
2015-09-03 14:43     ` Marc Zyngier
2015-09-03 14:58     ` Christoffer Dall
2015-09-03 14:58       ` Christoffer Dall
2015-09-03 15:53       ` Marc Zyngier
2015-09-03 15:53         ` Marc Zyngier
2015-09-03 16:09         ` Christoffer Dall
2015-09-03 16:09           ` Christoffer Dall
2015-08-30 13:54 ` [PATCH 3/9] arm/arm64: KVM: vgic: Factor out level irq processing on guest exit Christoffer Dall
2015-08-30 13:54   ` Christoffer Dall
2015-09-03 15:01   ` Marc Zyngier
2015-09-03 15:01     ` Marc Zyngier
2015-08-30 13:54 ` [PATCH 4/9] arm/arm64: Implement GICD_ICFGR as RO for PPIs Christoffer Dall
2015-08-30 13:54   ` Christoffer Dall
2015-09-03 15:03   ` Marc Zyngier
2015-09-03 15:03     ` Marc Zyngier
2015-08-30 13:54 ` [PATCH 5/9] arm/arm64: KVM: Use appropriate define in VGIC reset code Christoffer Dall
2015-08-30 13:54   ` Christoffer Dall
2015-09-03 15:04   ` Marc Zyngier
2015-09-03 15:04     ` Marc Zyngier
2015-09-04 16:08   ` Eric Auger
2015-09-04 16:08     ` Eric Auger
2015-08-30 13:54 ` [PATCH 6/9] arm/arm64: KVM: Add mapped interrupts documentation Christoffer Dall
2015-08-30 13:54   ` Christoffer Dall
2015-09-03 15:23   ` Marc Zyngier
2015-09-03 15:23     ` Marc Zyngier
2015-09-03 15:56     ` Eric Auger
2015-09-03 15:56       ` Eric Auger
2015-09-04 15:54       ` Christoffer Dall
2015-09-04 15:54         ` Christoffer Dall
2015-09-04 15:55     ` Christoffer Dall
2015-09-04 15:55       ` Christoffer Dall
2015-09-04 15:57     ` Christoffer Dall
2015-09-04 15:57       ` Christoffer Dall
2015-09-04 15:59       ` Marc Zyngier
2015-09-04 15:59         ` Marc Zyngier
2015-08-30 13:54 ` [PATCH 7/9] arm/arm64: KVM: vgic: Move active state handling to flush_hwstate Christoffer Dall
2015-08-30 13:54   ` Christoffer Dall
2015-09-03 15:33   ` Marc Zyngier
2015-09-03 15:33     ` Marc Zyngier
2015-08-30 13:54 ` [PATCH 8/9] arm/arm64: KVM: Rework the arch timer to use level-triggered semantics Christoffer Dall
2015-08-30 13:54   ` Christoffer Dall
2015-09-03 17:06   ` Marc Zyngier
2015-09-03 17:06     ` Marc Zyngier
2015-09-03 17:23     ` Christoffer Dall
2015-09-03 17:23       ` Christoffer Dall
2015-09-03 17:29       ` Marc Zyngier
2015-09-03 17:29         ` Marc Zyngier
2015-09-03 22:00         ` Christoffer Dall
2015-09-03 22:00           ` Christoffer Dall
2015-08-30 13:54 ` [PATCH 9/9] arm/arm64: KVM: arch timer: Reset CNTV_CTL to 0 Christoffer Dall
2015-08-30 13:54   ` Christoffer Dall
2015-08-31  8:46   ` Ard Biesheuvel
2015-08-31  8:46     ` Ard Biesheuvel
2015-08-31  8:57     ` Christoffer Dall
2015-08-31  8:57       ` Christoffer Dall
2015-08-31  9:02       ` Ard Biesheuvel
2015-08-31  9:02         ` Ard Biesheuvel
2015-09-03 17:07   ` Marc Zyngier
2015-09-03 17:07     ` Marc Zyngier
2015-09-03 17:10 ` Marc Zyngier [this message]
2015-09-03 17:10   ` [PATCH 0/9] Rework architected timer and fix UEFI reset Marc Zyngier

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