From: Marc Zyngier <maz@kernel.org>
To: Andrew Jones <drjones@redhat.com>
Cc: kernel-team@android.com, kvm@vger.kernel.org,
pbonzini@redhat.com, will@kernel.org,
kvmarm@lists.cs.columbia.edu,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v9 17/22] KVM: arm64: pkvm: Handle GICv3 traps as required
Date: Thu, 14 Oct 2021 17:06:10 +0100 [thread overview]
Message-ID: <cba80f95c5df69d9bcea8c6dc30cfbf7@kernel.org> (raw)
In-Reply-To: <20211014094613.tnx4xwyqrxj4jmnq@gator.home>
On 2021-10-14 10:46, Andrew Jones wrote:
> On Wed, Oct 13, 2021 at 01:03:41PM +0100, Marc Zyngier wrote:
>> Forward accesses to the ICV_*SGI*_EL1 registers to EL1, and
>> emulate ICV_SRE_EL1 by returning a fixed value.
>>
>> This should be enough to support GICv3 in a protected guest.
>
> Out of curiosity, has the RVIC work / plans been dropped?
ARM has dropped the architecture, and it makes no sense
to move KVM to support non-architectural stuff.
Which means we will eventually have to harden the guest itself
to cope with the fact that it cannot trust the interrupt controller.
Yes, this is crap.
M.
--
Jazz is not dead. It just smells funny...
_______________________________________________
kvmarm mailing list
kvmarm@lists.cs.columbia.edu
https://lists.cs.columbia.edu/mailman/listinfo/kvmarm
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: Andrew Jones <drjones@redhat.com>
Cc: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, will@kernel.org,
james.morse@arm.com, alexandru.elisei@arm.com,
suzuki.poulose@arm.com, mark.rutland@arm.com,
pbonzini@redhat.com, oupton@google.com, qperret@google.com,
kernel-team@android.com, tabba@google.com
Subject: Re: [PATCH v9 17/22] KVM: arm64: pkvm: Handle GICv3 traps as required
Date: Thu, 14 Oct 2021 17:06:10 +0100 [thread overview]
Message-ID: <cba80f95c5df69d9bcea8c6dc30cfbf7@kernel.org> (raw)
In-Reply-To: <20211014094613.tnx4xwyqrxj4jmnq@gator.home>
On 2021-10-14 10:46, Andrew Jones wrote:
> On Wed, Oct 13, 2021 at 01:03:41PM +0100, Marc Zyngier wrote:
>> Forward accesses to the ICV_*SGI*_EL1 registers to EL1, and
>> emulate ICV_SRE_EL1 by returning a fixed value.
>>
>> This should be enough to support GICv3 in a protected guest.
>
> Out of curiosity, has the RVIC work / plans been dropped?
ARM has dropped the architecture, and it makes no sense
to move KVM to support non-architectural stuff.
Which means we will eventually have to harden the guest itself
to cope with the fact that it cannot trust the interrupt controller.
Yes, this is crap.
M.
--
Jazz is not dead. It just smells funny...
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
WARNING: multiple messages have this Message-ID (diff)
From: Marc Zyngier <maz@kernel.org>
To: Andrew Jones <drjones@redhat.com>
Cc: kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, will@kernel.org,
james.morse@arm.com, alexandru.elisei@arm.com,
suzuki.poulose@arm.com, mark.rutland@arm.com,
pbonzini@redhat.com, oupton@google.com, qperret@google.com,
kernel-team@android.com, tabba@google.com
Subject: Re: [PATCH v9 17/22] KVM: arm64: pkvm: Handle GICv3 traps as required
Date: Thu, 14 Oct 2021 17:06:10 +0100 [thread overview]
Message-ID: <cba80f95c5df69d9bcea8c6dc30cfbf7@kernel.org> (raw)
In-Reply-To: <20211014094613.tnx4xwyqrxj4jmnq@gator.home>
On 2021-10-14 10:46, Andrew Jones wrote:
> On Wed, Oct 13, 2021 at 01:03:41PM +0100, Marc Zyngier wrote:
>> Forward accesses to the ICV_*SGI*_EL1 registers to EL1, and
>> emulate ICV_SRE_EL1 by returning a fixed value.
>>
>> This should be enough to support GICv3 in a protected guest.
>
> Out of curiosity, has the RVIC work / plans been dropped?
ARM has dropped the architecture, and it makes no sense
to move KVM to support non-architectural stuff.
Which means we will eventually have to harden the guest itself
to cope with the fact that it cannot trust the interrupt controller.
Yes, this is crap.
M.
--
Jazz is not dead. It just smells funny...
next prev parent reply other threads:[~2021-10-14 16:06 UTC|newest]
Thread overview: 122+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-10 14:56 [PATCH v8 00/11] KVM: arm64: Fixed features for protected VMs Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` [PATCH v8 01/11] KVM: arm64: Move __get_fault_info() and co into their own include file Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` [PATCH v8 02/11] KVM: arm64: Don't include switch.h into nvhe/kvm-main.c Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` [PATCH v8 03/11] KVM: arm64: Move early handlers to per-EC handlers Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` [PATCH v8 04/11] KVM: arm64: Pass struct kvm " Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` [PATCH v8 05/11] KVM: arm64: Add missing field descriptor for MDCR_EL2 Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` [PATCH v8 06/11] KVM: arm64: Simplify masking out MTE in feature id reg Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` [PATCH v8 07/11] KVM: arm64: Add handlers for protected VM System Registers Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-11 11:39 ` Marc Zyngier
2021-10-11 11:39 ` Marc Zyngier
2021-10-11 11:39 ` Marc Zyngier
2021-10-11 11:52 ` Fuad Tabba
2021-10-11 11:52 ` Fuad Tabba
2021-10-11 11:52 ` Fuad Tabba
2021-10-10 14:56 ` [PATCH v8 08/11] KVM: arm64: Initialize trap registers for protected VMs Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` [PATCH v8 09/11] KVM: arm64: Move sanitized copies of CPU features Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` [PATCH v8 10/11] KVM: arm64: Trap access to pVM restricted features Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-15 7:40 ` kernel test robot
2021-10-15 7:40 ` kernel test robot
2021-10-10 14:56 ` [PATCH v8 11/11] KVM: arm64: Handle protected guests at 32 bits Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-10 14:56 ` Fuad Tabba
2021-10-11 13:11 ` Marc Zyngier
2021-10-11 13:11 ` Marc Zyngier
2021-10-11 13:11 ` Marc Zyngier
2021-10-11 13:36 ` Fuad Tabba
2021-10-11 13:36 ` Fuad Tabba
2021-10-11 13:36 ` Fuad Tabba
2021-10-13 12:03 ` [PATCH v9 00/22] KVM: arm64: Fixed features for protected VMs Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` [PATCH v9 12/22] KVM: arm64: Fix early exit ptrauth handling Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` [PATCH v9 13/22] KVM: arm64: pkvm: Use a single function to expose all id-regs Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-14 9:04 ` Andrew Jones
2021-10-14 9:04 ` Andrew Jones
2021-10-14 9:04 ` Andrew Jones
2021-10-13 12:03 ` [PATCH v9 14/22] KVM: arm64: pkvm: Make the ERR/ERX*_EL1 registers RAZ/WI Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-14 9:32 ` Andrew Jones
2021-10-14 9:32 ` Andrew Jones
2021-10-14 9:32 ` Andrew Jones
2021-10-14 16:09 ` Marc Zyngier
2021-10-14 16:09 ` Marc Zyngier
2021-10-14 16:09 ` Marc Zyngier
2021-10-14 16:20 ` Andrew Jones
2021-10-14 16:20 ` Andrew Jones
2021-10-14 16:20 ` Andrew Jones
2021-10-13 12:03 ` [PATCH v9 15/22] KVM: arm64: pkvm: Drop AArch32-specific registers Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-14 9:33 ` Andrew Jones
2021-10-14 9:33 ` Andrew Jones
2021-10-14 9:33 ` Andrew Jones
2021-10-13 12:03 ` [PATCH v9 16/22] KVM: arm64: pkvm: Drop sysregs that should never be routed to the host Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` [PATCH v9 17/22] KVM: arm64: pkvm: Handle GICv3 traps as required Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-14 9:46 ` Andrew Jones
2021-10-14 9:46 ` Andrew Jones
2021-10-14 9:46 ` Andrew Jones
2021-10-14 16:06 ` Marc Zyngier [this message]
2021-10-14 16:06 ` Marc Zyngier
2021-10-14 16:06 ` Marc Zyngier
2021-10-13 12:03 ` [PATCH v9 18/22] KVM: arm64: pkvm: Preserve pending SError on exit from AArch32 Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` [PATCH v9 19/22] KVM: arm64: pkvm: Consolidate include files Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` [PATCH v9 20/22] KVM: arm64: pkvm: Move kvm_handle_pvm_restricted around Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` [PATCH v9 21/22] KVM: arm64: pkvm: Pass vpcu instead of kvm to kvm_get_exit_handler_array() Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` [PATCH v9 22/22] KVM: arm64: pkvm: Give priority to standard traps over pvm handling Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-13 12:03 ` Marc Zyngier
2021-10-18 9:51 ` [PATCH v9 00/22] KVM: arm64: Fixed features for protected VMs Fuad Tabba
2021-10-18 9:51 ` Fuad Tabba
2021-10-18 9:51 ` Fuad Tabba
2021-10-18 10:45 ` Andrew Jones
2021-10-18 10:45 ` Andrew Jones
2021-10-18 10:45 ` Andrew Jones
2021-10-18 12:33 ` Fuad Tabba
2021-10-18 12:33 ` Fuad Tabba
2021-10-18 12:33 ` Fuad Tabba
2021-10-18 16:37 ` Marc Zyngier
2021-10-18 16:37 ` Marc Zyngier
2021-10-18 16:37 ` Marc Zyngier
2021-10-18 16:39 ` [PATCH v8 00/11] " Marc Zyngier
2021-10-18 16:39 ` Marc Zyngier
2021-10-18 16:39 ` Marc Zyngier
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