Re: Re: [RFC PATCH] KVM: arm/arm64: vgic: change condition for level interrupt resampling

Hi, Eric, Marc and Christoffer, On Thu, 2018-03-08 at 19:12 +0100, Auger Eric wrote: > Hi Marc, Christoffer, > > On 08/03/18 18:28, Marc Zyngier wrote: > > > > On Thu, 08 Mar 2018 16:19:00 +, > > Christoffer Dall wrote: > > > > > > > > > On Thu, Mar 08, 2018 at 11:54:27AM +, Marc

Re: [RFC PATCH] KVM: arm/arm64: vgic: change condition for level interrupt resampling

Hi Marc, Christoffer, On 08/03/18 18:28, Marc Zyngier wrote: > On Thu, 08 Mar 2018 16:19:00 +, > Christoffer Dall wrote: >> >> On Thu, Mar 08, 2018 at 11:54:27AM +, Marc Zyngier wrote: >>> On 08/03/18 09:49, Marc Zyngier wrote: [updated Christoffer's email address] Hi

Re: [PATCH v5 22/23] arm64: KVM: Allow mapping of vectors outside of the RAM region

On Thu, Mar 01, 2018 at 03:55:37PM +, Marc Zyngier wrote: > We're now ready to map our vectors in weird and wonderful locations. > On enabling ARM64_HARDEN_EL2_VECTORS, a vector slots gets allocated > if this hasn't been already done via ARM64_HARDEN_BRANCH_PREDICTOR > and gets mapped outside

Re: [RFC PATCH] KVM: arm/arm64: vgic: change condition for level interrupt resampling

On Thu, 08 Mar 2018 16:19:00 +, Christoffer Dall wrote: > > On Thu, Mar 08, 2018 at 11:54:27AM +, Marc Zyngier wrote: > > On 08/03/18 09:49, Marc Zyngier wrote: > > > [updated Christoffer's email address] > > > > > > Hi Shunyong, > > > > > > On 08/03/18 07:01, Shunyong Yang wrote: > >

Re: [PATCH 1/2] KVM: arm/arm64: vgic: Don't populate multiple LRs with the same vintid

On Thu, 08 Mar 2018 16:02:42 +, Christoffer Dall wrote: > > On Thu, Mar 08, 2018 at 10:19:49AM +, Marc Zyngier wrote: > > On 07/03/18 23:34, Christoffer Dall wrote: > > > On Wed, Mar 7, 2018 at 12:40 PM, Marc Zyngier > > > wrote: > > >> The vgic code is trying to

Re: [RFC PATCH] KVM: arm/arm64: vgic: change condition for level interrupt resampling

On Thu, Mar 08, 2018 at 11:54:27AM +, Marc Zyngier wrote: > On 08/03/18 09:49, Marc Zyngier wrote: > > [updated Christoffer's email address] > > > > Hi Shunyong, > > > > On 08/03/18 07:01, Shunyong Yang wrote: > >> When resampling irqfds is enabled, level interrupt should be > >> de-asserted

Re: [RFC PATCH] KVM: arm/arm64: vgic: change condition for level interrupt resampling

On Thu, Mar 08, 2018 at 09:49:43AM +, Marc Zyngier wrote: > [updated Christoffer's email address] > > Hi Shunyong, > > On 08/03/18 07:01, Shunyong Yang wrote: > > When resampling irqfds is enabled, level interrupt should be > > de-asserted when resampling happens. On page 4-47 of GIC v3 > >

Re: [RFC PATCH] KVM: arm/arm64: vgic: change condition for level interrupt resampling

Hi Marc, On 08/03/18 12:54, Marc Zyngier wrote: > On 08/03/18 09:49, Marc Zyngier wrote: >> [updated Christoffer's email address] >> >> Hi Shunyong, >> >> On 08/03/18 07:01, Shunyong Yang wrote: >>> When resampling irqfds is enabled, level interrupt should be >>> de-asserted when resampling

Re: [PATCH 1/2] KVM: arm/arm64: vgic: Don't populate multiple LRs with the same vintid

On Thu, Mar 08, 2018 at 10:19:49AM +, Marc Zyngier wrote: > On 07/03/18 23:34, Christoffer Dall wrote: > > On Wed, Mar 7, 2018 at 12:40 PM, Marc Zyngier wrote: > >> The vgic code is trying to be clever when injecting GICv2 SGIs, > >> and will happily populate LRs with

Re: [此邮件可能存在风险] Re: [RFC PATCH] KVM: arm/arm64: vgic: change condition for level interrupt resampling

Hi, Eric, First, please let me change Christoffer's email to cd...@kernel.org. I add more information about my test below, please check. On Thu, 2018-03-08 at 09:57 +0100, Auger Eric wrote: > Hi, > > On 08/03/18 08:01, Shunyong Yang wrote: > > > > When resampling irqfds is enabled, level

[RFC PATCH] KVM: arm/arm64: vgic: change condition for level interrupt resampling

When resampling irqfds is enabled, level interrupt should be de-asserted when resampling happens. On page 4-47 of GIC v3 specification IHI0069D, it said, "When the PE acknowledges an SGI, a PPI, or an SPI at the CPU interface, the IRI changes the status of the interrupt to active and pending if: •

Re: [此邮件可能存在风险] Re: [RFC PATCH] KVM: arm/arm64: vgic: change condition for level interrupt resampling

Hi Shunyong, On 08/03/18 10:31, Yang, Shunyong wrote: > Hi, Eric, > > First, please let me change Christoffer's email to cd...@kernel.org. I > add more information about my test below, please check. > > On Thu, 2018-03-08 at 09:57 +0100, Auger Eric wrote: >> Hi, >> >> On 08/03/18 08:01, Shunyong

Re: [PATCH v5 19/23] arm64: KVM: Allow far branches from vector slots to the main vectors

On Thu, Mar 01, 2018 at 03:55:34PM +, Marc Zyngier wrote: > So far, the branch from the vector slots to the main vectors can at > most be 4GB from the main vectors (the reach of ADRP), and this > distance is known at compile time. If we were to remap the slots > to an unrelated VA, things

Re: [PATCH v5 18/23] arm64: KVM: Add epilogue branching to the vector code

On Thu, Mar 01, 2018 at 03:55:33PM +, Marc Zyngier wrote: > We are soon going to have to do some extra work in the BP hardening > vector slots. Instead of doing that work in the vectors themselves > (which would massively reduce the space available to deal with > Spectre v2), let's branch to

Re: [PATCH 1/2] KVM: arm/arm64: vgic: Don't populate multiple LRs with the same vintid

On 08/03/18 10:19, Marc Zyngier wrote: > On 07/03/18 23:34, Christoffer Dall wrote: >> On Wed, Mar 7, 2018 at 12:40 PM, Marc Zyngier wrote: >>> The vgic code is trying to be clever when injecting GICv2 SGIs, >>> and will happily populate LRs with the same interrupt number if

Re: [RFC PATCH] KVM: arm/arm64: vgic: change condition for level interrupt resampling

On 08/03/18 09:49, Marc Zyngier wrote: > [updated Christoffer's email address] > > Hi Shunyong, > > On 08/03/18 07:01, Shunyong Yang wrote: >> When resampling irqfds is enabled, level interrupt should be >> de-asserted when resampling happens. On page 4-47 of GIC v3 >> specification IHI0069D, it

Re: [此邮件可能存在风险] Re: [RFC PATCH] KVM: arm/arm64: vgic: change condition for level interrupt resampling

On 08/03/18 09:31, Yang, Shunyong wrote: > Hi, Eric, > > First, please let me change Christoffer's email to cd...@kernel.org. I > add more information about my test below, please check. > > On Thu, 2018-03-08 at 09:57 +0100, Auger Eric wrote: >> Hi, >> >> On 08/03/18 08:01, Shunyong Yang wrote:

Re: [PATCH 02/11] ACPI / APEI: Generalise the estatus queue's add/remove and notify code

On Wed, Mar 07, 2018 at 06:15:02PM +, James Morse wrote: > Today its just x86 and arm64. arm64 doesn't have a hook to do this. I'm happy > to > add an empty declaration or leave it under an ifdef until someone complains > about any behaviour I missed! So I did some more staring at the code

Re: [PATCH 1/2] KVM: arm/arm64: vgic: Don't populate multiple LRs with the same vintid

On 07/03/18 23:34, Christoffer Dall wrote: > On Wed, Mar 7, 2018 at 12:40 PM, Marc Zyngier wrote: >> The vgic code is trying to be clever when injecting GICv2 SGIs, >> and will happily populate LRs with the same interrupt number if >> they come from multiple vcpus (after

Re: [RFC PATCH] KVM: arm/arm64: vgic: change condition for level interrupt resampling

[updated Christoffer's email address] Hi Shunyong, On 08/03/18 07:01, Shunyong Yang wrote: > When resampling irqfds is enabled, level interrupt should be > de-asserted when resampling happens. On page 4-47 of GIC v3 > specification IHI0069D, it said, > "When the PE acknowledges an SGI, a PPI, or

Re: [RFC PATCH] KVM: arm/arm64: vgic: change condition for level interrupt resampling

Hi, On 08/03/18 08:01, Shunyong Yang wrote: > When resampling irqfds is enabled, level interrupt should be > de-asserted when resampling happens. On page 4-47 of GIC v3 > specification IHI0069D, it said, > "When the PE acknowledges an SGI, a PPI, or an SPI at the CPU > interface, the IRI changes