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Re: [Qemu-arm] [PATCH v7 5/8] hw/intc/arm_gicv3_its: Implement support f


From: Peter Maydell
Subject: Re: [Qemu-arm] [PATCH v7 5/8] hw/intc/arm_gicv3_its: Implement support for in-kernel ITS emulation
Date: Thu, 29 Sep 2016 17:38:57 -0700

On 29 September 2016 at 17:38, Peter Maydell <address@hidden> wrote:
> On 23 September 2016 at 00:43, Eric Auger <address@hidden> wrote:
>> From: Pavel Fedin <address@hidden>
>>
>> The ITS control frame is in-kernel emulated while accesses to the
>> GITS_TRANSLATER are mediated through the KVM_SIGNAL_MSI ioctl (MSI
>> direct MSI injection advertised by the CAP_SIGNAL_MSI capability)
>>
>> the kvm_gsi_direct_mapping is explicitly set to false to emphasize the
>> difference with GICv2M. Direct mapping cannot work with ITS since
>> the content of the MSI data is not the target interrupt ID but an
>> eventd id.
>>
>> GSI routing is advertised (kvm_gsi_routing_allowed) as well as
>> msi/irqfd signaling (kvm_msi_via_irqfd_allowed).
>>
>> The MSI frame (GITS_TRANSLATER) absolute GPA is computed on first
>> kvm_its_send_msi() call. It is then passed through KVM_SIGNAL_MSI
>> ioctl.
>>
>> Signed-off-by: Pavel Fedin <address@hidden>
>> Signed-off-by: Eric Auger <address@hidden>
>
>
>
> Applied to target-arm.next, thanks.

Oops, meant to send that as a followup to the cover letter!

thanks
-- PMM



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